1 | /* $Id: HMSVMR0.cpp 52654 2014-09-09 13:51:43Z vboxsync $ */
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2 | /** @file
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3 | * HM SVM (AMD-V) - Host Context Ring-0.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2013-2014 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 | /*******************************************************************************
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19 | * Header Files *
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20 | *******************************************************************************/
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21 | #define LOG_GROUP LOG_GROUP_HM
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22 | #include <iprt/asm-amd64-x86.h>
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23 | #include <iprt/thread.h>
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24 |
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25 | #include "HMInternal.h"
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26 | #include <VBox/vmm/vm.h>
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27 | #include "HMSVMR0.h"
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28 | #include <VBox/vmm/pdmapi.h>
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29 | #include <VBox/vmm/dbgf.h>
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30 | #include <VBox/vmm/iom.h>
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31 | #include <VBox/vmm/tm.h>
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32 | #include <VBox/vmm/gim.h>
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33 |
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34 | #ifdef DEBUG_ramshankar
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35 | # define HMSVM_SYNC_FULL_GUEST_STATE
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36 | # define HMSVM_ALWAYS_TRAP_ALL_XCPTS
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37 | # define HMSVM_ALWAYS_TRAP_PF
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38 | # define HMSVM_ALWAYS_TRAP_TASK_SWITCH
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39 | #endif
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40 |
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41 |
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42 | /*******************************************************************************
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43 | * Defined Constants And Macros *
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44 | *******************************************************************************/
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45 | #ifdef VBOX_WITH_STATISTICS
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46 | # define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { \
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47 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll); \
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48 | if ((u64ExitCode) == SVM_EXIT_NPF) \
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49 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitReasonNpf); \
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50 | else \
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51 | STAM_COUNTER_INC(&pVCpu->hm.s.paStatExitReasonR0[(u64ExitCode) & MASK_EXITREASON_STAT]); \
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52 | } while (0)
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53 | #else
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54 | # define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { } while (0)
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55 | #endif
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56 |
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57 | /** If we decide to use a function table approach this can be useful to
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58 | * switch to a "static DECLCALLBACK(int)". */
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59 | #define HMSVM_EXIT_DECL static int
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60 |
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61 | /** @name Segment attribute conversion between CPU and AMD-V VMCB format.
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62 | *
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63 | * The CPU format of the segment attribute is described in X86DESCATTRBITS
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64 | * which is 16-bits (i.e. includes 4 bits of the segment limit).
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65 | *
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66 | * The AMD-V VMCB format the segment attribute is compact 12-bits (strictly
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67 | * only the attribute bits and nothing else). Upper 4-bits are unused.
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68 | *
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69 | * @{ */
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70 | #define HMSVM_CPU_2_VMCB_SEG_ATTR(a) ( ((a) & 0xff) | (((a) & 0xf000) >> 4) )
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71 | #define HMSVM_VMCB_2_CPU_SEG_ATTR(a) ( ((a) & 0xff) | (((a) & 0x0f00) << 4) )
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72 | /** @} */
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73 |
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74 | /** @name Macros for loading, storing segment registers to/from the VMCB.
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75 | * @{ */
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76 | #define HMSVM_LOAD_SEG_REG(REG, reg) \
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77 | do \
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78 | { \
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79 | Assert(pCtx->reg.fFlags & CPUMSELREG_FLAGS_VALID); \
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80 | Assert(pCtx->reg.ValidSel == pCtx->reg.Sel); \
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81 | pVmcb->guest.REG.u16Sel = pCtx->reg.Sel; \
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82 | pVmcb->guest.REG.u32Limit = pCtx->reg.u32Limit; \
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83 | pVmcb->guest.REG.u64Base = pCtx->reg.u64Base; \
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84 | pVmcb->guest.REG.u16Attr = HMSVM_CPU_2_VMCB_SEG_ATTR(pCtx->reg.Attr.u); \
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85 | } while (0)
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86 |
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87 | #define HMSVM_SAVE_SEG_REG(REG, reg) \
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88 | do \
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89 | { \
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90 | pMixedCtx->reg.Sel = pVmcb->guest.REG.u16Sel; \
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91 | pMixedCtx->reg.ValidSel = pVmcb->guest.REG.u16Sel; \
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92 | pMixedCtx->reg.fFlags = CPUMSELREG_FLAGS_VALID; \
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93 | pMixedCtx->reg.u32Limit = pVmcb->guest.REG.u32Limit; \
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94 | pMixedCtx->reg.u64Base = pVmcb->guest.REG.u64Base; \
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95 | pMixedCtx->reg.Attr.u = HMSVM_VMCB_2_CPU_SEG_ATTR(pVmcb->guest.REG.u16Attr); \
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96 | } while (0)
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97 | /** @} */
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98 |
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99 | /** Macro for checking and returning from the using function for
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100 | * \#VMEXIT intercepts that maybe caused during delivering of another
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101 | * event in the guest. */
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102 | #define HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY() \
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103 | do \
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104 | { \
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105 | int rc = hmR0SvmCheckExitDueToEventDelivery(pVCpu, pCtx, pSvmTransient); \
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106 | if (RT_UNLIKELY(rc == VINF_HM_DOUBLE_FAULT)) \
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107 | return VINF_SUCCESS; \
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108 | else if (RT_UNLIKELY(rc == VINF_EM_RESET)) \
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109 | return rc; \
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110 | } while (0)
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111 |
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112 | /** Macro for upgrading a @a a_rc to VINF_EM_DBG_STEPPED after emulating an
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113 | * instruction that exited. */
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114 | #define HMSVM_CHECK_SINGLE_STEP(a_pVCpu, a_rc) \
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115 | do { \
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116 | if ((a_pVCpu)->hm.s.fSingleInstruction && (a_rc) == VINF_SUCCESS) \
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117 | (a_rc) = VINF_EM_DBG_STEPPED; \
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118 | } while (0)
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119 |
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120 | /** Assert that preemption is disabled or covered by thread-context hooks. */
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121 | #define HMSVM_ASSERT_PREEMPT_SAFE() Assert( VMMR0ThreadCtxHooksAreRegistered(pVCpu) \
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122 | || !RTThreadPreemptIsEnabled(NIL_RTTHREAD));
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123 |
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124 | /** Assert that we haven't migrated CPUs when thread-context hooks are not
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125 | * used. */
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126 | #define HMSVM_ASSERT_CPU_SAFE() AssertMsg( VMMR0ThreadCtxHooksAreRegistered(pVCpu) \
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127 | || pVCpu->hm.s.idEnteredCpu == RTMpCpuId(), \
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128 | ("Illegal migration! Entered on CPU %u Current %u\n", \
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129 | pVCpu->hm.s.idEnteredCpu, RTMpCpuId()));
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130 |
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131 | /** Exception bitmap mask for all contributory exceptions.
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132 | *
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133 | * Page fault is deliberately excluded here as it's conditional as to whether
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134 | * it's contributory or benign. Page faults are handled separately.
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135 | */
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136 | #define HMSVM_CONTRIBUTORY_XCPT_MASK ( RT_BIT(X86_XCPT_GP) | RT_BIT(X86_XCPT_NP) | RT_BIT(X86_XCPT_SS) | RT_BIT(X86_XCPT_TS) \
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137 | | RT_BIT(X86_XCPT_DE))
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138 |
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139 | /** @name VMCB Clean Bits.
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140 | *
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141 | * These flags are used for VMCB-state caching. A set VMCB Clean bit indicates
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142 | * AMD-V doesn't need to reload the corresponding value(s) from the VMCB in
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143 | * memory.
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144 | *
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145 | * @{ */
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146 | /** All intercepts vectors, TSC offset, PAUSE filter counter. */
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147 | #define HMSVM_VMCB_CLEAN_INTERCEPTS RT_BIT(0)
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148 | /** I/O permission bitmap, MSR permission bitmap. */
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149 | #define HMSVM_VMCB_CLEAN_IOPM_MSRPM RT_BIT(1)
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150 | /** ASID. */
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151 | #define HMSVM_VMCB_CLEAN_ASID RT_BIT(2)
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152 | /** TRP: V_TPR, V_IRQ, V_INTR_PRIO, V_IGN_TPR, V_INTR_MASKING,
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153 | V_INTR_VECTOR. */
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154 | #define HMSVM_VMCB_CLEAN_TPR RT_BIT(3)
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155 | /** Nested Paging: Nested CR3 (nCR3), PAT. */
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156 | #define HMSVM_VMCB_CLEAN_NP RT_BIT(4)
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157 | /** Control registers (CR0, CR3, CR4, EFER). */
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158 | #define HMSVM_VMCB_CLEAN_CRX_EFER RT_BIT(5)
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159 | /** Debug registers (DR6, DR7). */
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160 | #define HMSVM_VMCB_CLEAN_DRX RT_BIT(6)
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161 | /** GDT, IDT limit and base. */
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162 | #define HMSVM_VMCB_CLEAN_DT RT_BIT(7)
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163 | /** Segment register: CS, SS, DS, ES limit and base. */
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164 | #define HMSVM_VMCB_CLEAN_SEG RT_BIT(8)
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165 | /** CR2.*/
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166 | #define HMSVM_VMCB_CLEAN_CR2 RT_BIT(9)
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167 | /** Last-branch record (DbgCtlMsr, br_from, br_to, lastint_from, lastint_to) */
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168 | #define HMSVM_VMCB_CLEAN_LBR RT_BIT(10)
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169 | /** AVIC (AVIC APIC_BAR; AVIC APIC_BACKING_PAGE, AVIC
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170 | PHYSICAL_TABLE and AVIC LOGICAL_TABLE Pointers). */
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171 | #define HMSVM_VMCB_CLEAN_AVIC RT_BIT(11)
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172 | /** Mask of all valid VMCB Clean bits. */
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173 | #define HMSVM_VMCB_CLEAN_ALL ( HMSVM_VMCB_CLEAN_INTERCEPTS \
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174 | | HMSVM_VMCB_CLEAN_IOPM_MSRPM \
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175 | | HMSVM_VMCB_CLEAN_ASID \
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176 | | HMSVM_VMCB_CLEAN_TPR \
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177 | | HMSVM_VMCB_CLEAN_NP \
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178 | | HMSVM_VMCB_CLEAN_CRX_EFER \
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179 | | HMSVM_VMCB_CLEAN_DRX \
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180 | | HMSVM_VMCB_CLEAN_DT \
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181 | | HMSVM_VMCB_CLEAN_SEG \
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182 | | HMSVM_VMCB_CLEAN_CR2 \
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183 | | HMSVM_VMCB_CLEAN_LBR \
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184 | | HMSVM_VMCB_CLEAN_AVIC)
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185 | /** @} */
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186 |
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187 | /** @name SVM transient.
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188 | *
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189 | * A state structure for holding miscellaneous information across AMD-V
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190 | * VMRUN/#VMEXIT operation, restored after the transition.
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191 | *
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192 | * @{ */
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193 | typedef struct SVMTRANSIENT
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194 | {
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195 | /** The host's rflags/eflags. */
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196 | RTCCUINTREG uEflags;
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197 | #if HC_ARCH_BITS == 32
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198 | uint32_t u32Alignment0;
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199 | #endif
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200 |
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201 | /** The #VMEXIT exit code (the EXITCODE field in the VMCB). */
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202 | uint64_t u64ExitCode;
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203 | /** The guest's TPR value used for TPR shadowing. */
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204 | uint8_t u8GuestTpr;
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205 | /** Alignment. */
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206 | uint8_t abAlignment0[7];
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207 |
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208 | /** Whether the guest FPU state was active at the time of #VMEXIT. */
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209 | bool fWasGuestFPUStateActive;
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210 | /** Whether the guest debug state was active at the time of #VMEXIT. */
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211 | bool fWasGuestDebugStateActive;
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212 | /** Whether the hyper debug state was active at the time of #VMEXIT. */
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213 | bool fWasHyperDebugStateActive;
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214 | /** Whether the TSC offset mode needs to be updated. */
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215 | bool fUpdateTscOffsetting;
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216 | /** Whether the TSC_AUX MSR needs restoring on #VMEXIT. */
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217 | bool fRestoreTscAuxMsr;
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218 | /** Whether the #VMEXIT was caused by a page-fault during delivery of a
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219 | * contributary exception or a page-fault. */
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220 | bool fVectoringDoublePF;
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221 | /** Whether the #VMEXIT was caused by a page-fault during delivery of an
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222 | * external interrupt or NMI. */
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223 | bool fVectoringPF;
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224 | } SVMTRANSIENT, *PSVMTRANSIENT;
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225 | AssertCompileMemberAlignment(SVMTRANSIENT, u64ExitCode, sizeof(uint64_t));
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226 | AssertCompileMemberAlignment(SVMTRANSIENT, fWasGuestFPUStateActive, sizeof(uint64_t));
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227 | /** @} */
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228 |
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229 | /**
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230 | * MSRPM (MSR permission bitmap) read permissions (for guest RDMSR).
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231 | */
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232 | typedef enum SVMMSREXITREAD
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233 | {
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234 | /** Reading this MSR causes a #VMEXIT. */
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235 | SVMMSREXIT_INTERCEPT_READ = 0xb,
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236 | /** Reading this MSR does not cause a #VMEXIT. */
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237 | SVMMSREXIT_PASSTHRU_READ
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238 | } SVMMSREXITREAD;
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239 |
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240 | /**
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241 | * MSRPM (MSR permission bitmap) write permissions (for guest WRMSR).
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242 | */
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243 | typedef enum SVMMSREXITWRITE
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244 | {
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245 | /** Writing to this MSR causes a #VMEXIT. */
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246 | SVMMSREXIT_INTERCEPT_WRITE = 0xd,
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247 | /** Writing to this MSR does not cause a #VMEXIT. */
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248 | SVMMSREXIT_PASSTHRU_WRITE
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249 | } SVMMSREXITWRITE;
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250 |
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251 | /**
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252 | * SVM #VMEXIT handler.
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253 | *
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254 | * @returns VBox status code.
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255 | * @param pVCpu Pointer to the VMCPU.
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256 | * @param pMixedCtx Pointer to the guest-CPU context.
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257 | * @param pSvmTransient Pointer to the SVM-transient structure.
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258 | */
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259 | typedef int FNSVMEXITHANDLER(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient);
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260 |
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261 | /*******************************************************************************
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262 | * Internal Functions *
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263 | *******************************************************************************/
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264 | static void hmR0SvmSetMsrPermission(PVMCPU pVCpu, unsigned uMsr, SVMMSREXITREAD enmRead, SVMMSREXITWRITE enmWrite);
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265 | static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu);
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266 | static void hmR0SvmLeave(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx);
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267 |
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268 | /** @name #VMEXIT handlers.
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269 | * @{
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270 | */
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271 | static FNSVMEXITHANDLER hmR0SvmExitIntr;
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272 | static FNSVMEXITHANDLER hmR0SvmExitWbinvd;
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273 | static FNSVMEXITHANDLER hmR0SvmExitInvd;
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274 | static FNSVMEXITHANDLER hmR0SvmExitCpuid;
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275 | static FNSVMEXITHANDLER hmR0SvmExitRdtsc;
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276 | static FNSVMEXITHANDLER hmR0SvmExitRdtscp;
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277 | static FNSVMEXITHANDLER hmR0SvmExitRdpmc;
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278 | static FNSVMEXITHANDLER hmR0SvmExitInvlpg;
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279 | static FNSVMEXITHANDLER hmR0SvmExitHlt;
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280 | static FNSVMEXITHANDLER hmR0SvmExitMonitor;
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281 | static FNSVMEXITHANDLER hmR0SvmExitMwait;
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282 | static FNSVMEXITHANDLER hmR0SvmExitShutdown;
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283 | static FNSVMEXITHANDLER hmR0SvmExitReadCRx;
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284 | static FNSVMEXITHANDLER hmR0SvmExitWriteCRx;
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285 | static FNSVMEXITHANDLER hmR0SvmExitSetPendingXcptUD;
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286 | static FNSVMEXITHANDLER hmR0SvmExitMsr;
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287 | static FNSVMEXITHANDLER hmR0SvmExitReadDRx;
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288 | static FNSVMEXITHANDLER hmR0SvmExitWriteDRx;
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289 | static FNSVMEXITHANDLER hmR0SvmExitIOInstr;
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290 | static FNSVMEXITHANDLER hmR0SvmExitNestedPF;
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291 | static FNSVMEXITHANDLER hmR0SvmExitVIntr;
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292 | static FNSVMEXITHANDLER hmR0SvmExitTaskSwitch;
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293 | static FNSVMEXITHANDLER hmR0SvmExitVmmCall;
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294 | static FNSVMEXITHANDLER hmR0SvmExitIret;
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295 | static FNSVMEXITHANDLER hmR0SvmExitXcptPF;
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296 | static FNSVMEXITHANDLER hmR0SvmExitXcptNM;
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297 | static FNSVMEXITHANDLER hmR0SvmExitXcptMF;
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298 | static FNSVMEXITHANDLER hmR0SvmExitXcptDB;
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299 | /** @} */
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300 |
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301 | DECLINLINE(int) hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient);
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302 |
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303 | /*******************************************************************************
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304 | * Global Variables *
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305 | *******************************************************************************/
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306 | /** Ring-0 memory object for the IO bitmap. */
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307 | RTR0MEMOBJ g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
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308 | /** Physical address of the IO bitmap. */
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309 | RTHCPHYS g_HCPhysIOBitmap = 0;
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310 | /** Virtual address of the IO bitmap. */
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311 | R0PTRTYPE(void *) g_pvIOBitmap = NULL;
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312 |
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313 |
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314 | /**
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315 | * Sets up and activates AMD-V on the current CPU.
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316 | *
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317 | * @returns VBox status code.
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318 | * @param pCpu Pointer to the CPU info struct.
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319 | * @param pVM Pointer to the VM (can be NULL after a resume!).
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320 | * @param pvCpuPage Pointer to the global CPU page.
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321 | * @param HCPhysCpuPage Physical address of the global CPU page.
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322 | * @param fEnabledByHost Whether the host OS has already initialized AMD-V.
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323 | * @param pvArg Unused on AMD-V.
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324 | */
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325 | VMMR0DECL(int) SVMR0EnableCpu(PHMGLOBALCPUINFO pCpu, PVM pVM, void *pvCpuPage, RTHCPHYS HCPhysCpuPage, bool fEnabledByHost,
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326 | void *pvArg)
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327 | {
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328 | Assert(!fEnabledByHost);
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329 | Assert(HCPhysCpuPage && HCPhysCpuPage != NIL_RTHCPHYS);
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330 | Assert(RT_ALIGN_T(HCPhysCpuPage, _4K, RTHCPHYS) == HCPhysCpuPage);
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331 | Assert(pvCpuPage);
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332 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
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333 |
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334 | NOREF(pvArg);
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335 | NOREF(fEnabledByHost);
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336 |
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337 | /* Paranoid: Disable interrupt as, in theory, interrupt handlers might mess with EFER. */
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338 | RTCCUINTREG uEflags = ASMIntDisableFlags();
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339 |
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340 | /*
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341 | * We must turn on AMD-V and setup the host state physical address, as those MSRs are per CPU.
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342 | */
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343 | uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
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344 | if (u64HostEfer & MSR_K6_EFER_SVME)
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345 | {
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346 | /* If the VBOX_HWVIRTEX_IGNORE_SVM_IN_USE is active, then we blindly use AMD-V. */
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347 | if ( pVM
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348 | && pVM->hm.s.svm.fIgnoreInUseError)
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349 | {
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350 | pCpu->fIgnoreAMDVInUseError = true;
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351 | }
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352 |
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353 | if (!pCpu->fIgnoreAMDVInUseError)
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354 | {
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355 | ASMSetFlags(uEflags);
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356 | return VERR_SVM_IN_USE;
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357 | }
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358 | }
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359 |
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360 | /* Turn on AMD-V in the EFER MSR. */
|
---|
361 | ASMWrMsr(MSR_K6_EFER, u64HostEfer | MSR_K6_EFER_SVME);
|
---|
362 |
|
---|
363 | /* Write the physical page address where the CPU will store the host state while executing the VM. */
|
---|
364 | ASMWrMsr(MSR_K8_VM_HSAVE_PA, HCPhysCpuPage);
|
---|
365 |
|
---|
366 | /* Restore interrupts. */
|
---|
367 | ASMSetFlags(uEflags);
|
---|
368 |
|
---|
369 | /*
|
---|
370 | * Theoretically, other hypervisors may have used ASIDs, ideally we should flush all non-zero ASIDs
|
---|
371 | * when enabling SVM. AMD doesn't have an SVM instruction to flush all ASIDs (flushing is done
|
---|
372 | * upon VMRUN). Therefore, just set the fFlushAsidBeforeUse flag which instructs hmR0SvmSetupTLB()
|
---|
373 | * to flush the TLB with before using a new ASID.
|
---|
374 | */
|
---|
375 | pCpu->fFlushAsidBeforeUse = true;
|
---|
376 |
|
---|
377 | /*
|
---|
378 | * Ensure each VCPU scheduled on this CPU gets a new VPID on resume. See @bugref{6255}.
|
---|
379 | */
|
---|
380 | ++pCpu->cTlbFlushes;
|
---|
381 |
|
---|
382 | return VINF_SUCCESS;
|
---|
383 | }
|
---|
384 |
|
---|
385 |
|
---|
386 | /**
|
---|
387 | * Deactivates AMD-V on the current CPU.
|
---|
388 | *
|
---|
389 | * @returns VBox status code.
|
---|
390 | * @param pCpu Pointer to the CPU info struct.
|
---|
391 | * @param pvCpuPage Pointer to the global CPU page.
|
---|
392 | * @param HCPhysCpuPage Physical address of the global CPU page.
|
---|
393 | */
|
---|
394 | VMMR0DECL(int) SVMR0DisableCpu(PHMGLOBALCPUINFO pCpu, void *pvCpuPage, RTHCPHYS HCPhysCpuPage)
|
---|
395 | {
|
---|
396 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
397 | AssertReturn( HCPhysCpuPage
|
---|
398 | && HCPhysCpuPage != NIL_RTHCPHYS, VERR_INVALID_PARAMETER);
|
---|
399 | AssertReturn(pvCpuPage, VERR_INVALID_PARAMETER);
|
---|
400 | NOREF(pCpu);
|
---|
401 |
|
---|
402 | /* Paranoid: Disable interrupts as, in theory, interrupt handlers might mess with EFER. */
|
---|
403 | RTCCUINTREG uEflags = ASMIntDisableFlags();
|
---|
404 |
|
---|
405 | /* Turn off AMD-V in the EFER MSR. */
|
---|
406 | uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
|
---|
407 | ASMWrMsr(MSR_K6_EFER, u64HostEfer & ~MSR_K6_EFER_SVME);
|
---|
408 |
|
---|
409 | /* Invalidate host state physical address. */
|
---|
410 | ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
|
---|
411 |
|
---|
412 | /* Restore interrupts. */
|
---|
413 | ASMSetFlags(uEflags);
|
---|
414 |
|
---|
415 | return VINF_SUCCESS;
|
---|
416 | }
|
---|
417 |
|
---|
418 |
|
---|
419 | /**
|
---|
420 | * Does global AMD-V initialization (called during module initialization).
|
---|
421 | *
|
---|
422 | * @returns VBox status code.
|
---|
423 | */
|
---|
424 | VMMR0DECL(int) SVMR0GlobalInit(void)
|
---|
425 | {
|
---|
426 | /*
|
---|
427 | * Allocate 12 KB for the IO bitmap. Since this is non-optional and we always intercept all IO accesses, it's done
|
---|
428 | * once globally here instead of per-VM.
|
---|
429 | */
|
---|
430 | Assert(g_hMemObjIOBitmap == NIL_RTR0MEMOBJ);
|
---|
431 | int rc = RTR0MemObjAllocCont(&g_hMemObjIOBitmap, 3 << PAGE_SHIFT, false /* fExecutable */);
|
---|
432 | if (RT_FAILURE(rc))
|
---|
433 | return rc;
|
---|
434 |
|
---|
435 | g_pvIOBitmap = RTR0MemObjAddress(g_hMemObjIOBitmap);
|
---|
436 | g_HCPhysIOBitmap = RTR0MemObjGetPagePhysAddr(g_hMemObjIOBitmap, 0 /* iPage */);
|
---|
437 |
|
---|
438 | /* Set all bits to intercept all IO accesses. */
|
---|
439 | ASMMemFill32(g_pvIOBitmap, 3 << PAGE_SHIFT, UINT32_C(0xffffffff));
|
---|
440 | return VINF_SUCCESS;
|
---|
441 | }
|
---|
442 |
|
---|
443 |
|
---|
444 | /**
|
---|
445 | * Does global AMD-V termination (called during module termination).
|
---|
446 | */
|
---|
447 | VMMR0DECL(void) SVMR0GlobalTerm(void)
|
---|
448 | {
|
---|
449 | if (g_hMemObjIOBitmap != NIL_RTR0MEMOBJ)
|
---|
450 | {
|
---|
451 | RTR0MemObjFree(g_hMemObjIOBitmap, true /* fFreeMappings */);
|
---|
452 | g_pvIOBitmap = NULL;
|
---|
453 | g_HCPhysIOBitmap = 0;
|
---|
454 | g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
|
---|
455 | }
|
---|
456 | }
|
---|
457 |
|
---|
458 |
|
---|
459 | /**
|
---|
460 | * Frees any allocated per-VCPU structures for a VM.
|
---|
461 | *
|
---|
462 | * @param pVM Pointer to the VM.
|
---|
463 | */
|
---|
464 | DECLINLINE(void) hmR0SvmFreeStructs(PVM pVM)
|
---|
465 | {
|
---|
466 | for (uint32_t i = 0; i < pVM->cCpus; i++)
|
---|
467 | {
|
---|
468 | PVMCPU pVCpu = &pVM->aCpus[i];
|
---|
469 | AssertPtr(pVCpu);
|
---|
470 |
|
---|
471 | if (pVCpu->hm.s.svm.hMemObjVmcbHost != NIL_RTR0MEMOBJ)
|
---|
472 | {
|
---|
473 | RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcbHost, false);
|
---|
474 | pVCpu->hm.s.svm.pvVmcbHost = 0;
|
---|
475 | pVCpu->hm.s.svm.HCPhysVmcbHost = 0;
|
---|
476 | pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
|
---|
477 | }
|
---|
478 |
|
---|
479 | if (pVCpu->hm.s.svm.hMemObjVmcb != NIL_RTR0MEMOBJ)
|
---|
480 | {
|
---|
481 | RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcb, false);
|
---|
482 | pVCpu->hm.s.svm.pvVmcb = 0;
|
---|
483 | pVCpu->hm.s.svm.HCPhysVmcb = 0;
|
---|
484 | pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
|
---|
485 | }
|
---|
486 |
|
---|
487 | if (pVCpu->hm.s.svm.hMemObjMsrBitmap != NIL_RTR0MEMOBJ)
|
---|
488 | {
|
---|
489 | RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjMsrBitmap, false);
|
---|
490 | pVCpu->hm.s.svm.pvMsrBitmap = 0;
|
---|
491 | pVCpu->hm.s.svm.HCPhysMsrBitmap = 0;
|
---|
492 | pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
|
---|
493 | }
|
---|
494 | }
|
---|
495 | }
|
---|
496 |
|
---|
497 |
|
---|
498 | /**
|
---|
499 | * Does per-VM AMD-V initialization.
|
---|
500 | *
|
---|
501 | * @returns VBox status code.
|
---|
502 | * @param pVM Pointer to the VM.
|
---|
503 | */
|
---|
504 | VMMR0DECL(int) SVMR0InitVM(PVM pVM)
|
---|
505 | {
|
---|
506 | int rc = VERR_INTERNAL_ERROR_5;
|
---|
507 |
|
---|
508 | /*
|
---|
509 | * Check for an AMD CPU erratum which requires us to flush the TLB before every world-switch.
|
---|
510 | */
|
---|
511 | uint32_t u32Family;
|
---|
512 | uint32_t u32Model;
|
---|
513 | uint32_t u32Stepping;
|
---|
514 | if (HMAmdIsSubjectToErratum170(&u32Family, &u32Model, &u32Stepping))
|
---|
515 | {
|
---|
516 | Log4(("SVMR0InitVM: AMD cpu with erratum 170 family %#x model %#x stepping %#x\n", u32Family, u32Model, u32Stepping));
|
---|
517 | pVM->hm.s.svm.fAlwaysFlushTLB = true;
|
---|
518 | }
|
---|
519 |
|
---|
520 | /*
|
---|
521 | * Initialize the R0 memory objects up-front so we can properly cleanup on allocation failures.
|
---|
522 | */
|
---|
523 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
524 | {
|
---|
525 | PVMCPU pVCpu = &pVM->aCpus[i];
|
---|
526 | pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
|
---|
527 | pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
|
---|
528 | pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
|
---|
529 | }
|
---|
530 |
|
---|
531 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
532 | {
|
---|
533 | PVMCPU pVCpu = &pVM->aCpus[i];
|
---|
534 |
|
---|
535 | /*
|
---|
536 | * Allocate one page for the host-context VM control block (VMCB). This is used for additional host-state (such as
|
---|
537 | * FS, GS, Kernel GS Base, etc.) apart from the host-state save area specified in MSR_K8_VM_HSAVE_PA.
|
---|
538 | */
|
---|
539 | rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcbHost, 1 << PAGE_SHIFT, false /* fExecutable */);
|
---|
540 | if (RT_FAILURE(rc))
|
---|
541 | goto failure_cleanup;
|
---|
542 |
|
---|
543 | pVCpu->hm.s.svm.pvVmcbHost = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcbHost);
|
---|
544 | pVCpu->hm.s.svm.HCPhysVmcbHost = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcbHost, 0 /* iPage */);
|
---|
545 | Assert(pVCpu->hm.s.svm.HCPhysVmcbHost < _4G);
|
---|
546 | ASMMemZeroPage(pVCpu->hm.s.svm.pvVmcbHost);
|
---|
547 |
|
---|
548 | /*
|
---|
549 | * Allocate one page for the guest-state VMCB.
|
---|
550 | */
|
---|
551 | rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcb, 1 << PAGE_SHIFT, false /* fExecutable */);
|
---|
552 | if (RT_FAILURE(rc))
|
---|
553 | goto failure_cleanup;
|
---|
554 |
|
---|
555 | pVCpu->hm.s.svm.pvVmcb = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcb);
|
---|
556 | pVCpu->hm.s.svm.HCPhysVmcb = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcb, 0 /* iPage */);
|
---|
557 | Assert(pVCpu->hm.s.svm.HCPhysVmcb < _4G);
|
---|
558 | ASMMemZeroPage(pVCpu->hm.s.svm.pvVmcb);
|
---|
559 |
|
---|
560 | /*
|
---|
561 | * Allocate two pages (8 KB) for the MSR permission bitmap. There doesn't seem to be a way to convince
|
---|
562 | * SVM to not require one.
|
---|
563 | */
|
---|
564 | rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjMsrBitmap, 2 << PAGE_SHIFT, false /* fExecutable */);
|
---|
565 | if (RT_FAILURE(rc))
|
---|
566 | goto failure_cleanup;
|
---|
567 |
|
---|
568 | pVCpu->hm.s.svm.pvMsrBitmap = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjMsrBitmap);
|
---|
569 | pVCpu->hm.s.svm.HCPhysMsrBitmap = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjMsrBitmap, 0 /* iPage */);
|
---|
570 | /* Set all bits to intercept all MSR accesses (changed later on). */
|
---|
571 | ASMMemFill32(pVCpu->hm.s.svm.pvMsrBitmap, 2 << PAGE_SHIFT, UINT32_C(0xffffffff));
|
---|
572 | }
|
---|
573 |
|
---|
574 | return VINF_SUCCESS;
|
---|
575 |
|
---|
576 | failure_cleanup:
|
---|
577 | hmR0SvmFreeStructs(pVM);
|
---|
578 | return rc;
|
---|
579 | }
|
---|
580 |
|
---|
581 |
|
---|
582 | /**
|
---|
583 | * Does per-VM AMD-V termination.
|
---|
584 | *
|
---|
585 | * @returns VBox status code.
|
---|
586 | * @param pVM Pointer to the VM.
|
---|
587 | */
|
---|
588 | VMMR0DECL(int) SVMR0TermVM(PVM pVM)
|
---|
589 | {
|
---|
590 | hmR0SvmFreeStructs(pVM);
|
---|
591 | return VINF_SUCCESS;
|
---|
592 | }
|
---|
593 |
|
---|
594 |
|
---|
595 | /**
|
---|
596 | * Sets the permission bits for the specified MSR in the MSRPM.
|
---|
597 | *
|
---|
598 | * @param pVCpu Pointer to the VMCPU.
|
---|
599 | * @param uMsr The MSR for which the access permissions are being set.
|
---|
600 | * @param enmRead MSR read permissions.
|
---|
601 | * @param enmWrite MSR write permissions.
|
---|
602 | */
|
---|
603 | static void hmR0SvmSetMsrPermission(PVMCPU pVCpu, unsigned uMsr, SVMMSREXITREAD enmRead, SVMMSREXITWRITE enmWrite)
|
---|
604 | {
|
---|
605 | unsigned ulBit;
|
---|
606 | uint8_t *pbMsrBitmap = (uint8_t *)pVCpu->hm.s.svm.pvMsrBitmap;
|
---|
607 |
|
---|
608 | /*
|
---|
609 | * Layout:
|
---|
610 | * Byte offset MSR range
|
---|
611 | * 0x000 - 0x7ff 0x00000000 - 0x00001fff
|
---|
612 | * 0x800 - 0xfff 0xc0000000 - 0xc0001fff
|
---|
613 | * 0x1000 - 0x17ff 0xc0010000 - 0xc0011fff
|
---|
614 | * 0x1800 - 0x1fff Reserved
|
---|
615 | */
|
---|
616 | if (uMsr <= 0x00001FFF)
|
---|
617 | {
|
---|
618 | /* Pentium-compatible MSRs. */
|
---|
619 | ulBit = uMsr * 2;
|
---|
620 | }
|
---|
621 | else if ( uMsr >= 0xC0000000
|
---|
622 | && uMsr <= 0xC0001FFF)
|
---|
623 | {
|
---|
624 | /* AMD Sixth Generation x86 Processor MSRs. */
|
---|
625 | ulBit = (uMsr - 0xC0000000) * 2;
|
---|
626 | pbMsrBitmap += 0x800;
|
---|
627 | }
|
---|
628 | else if ( uMsr >= 0xC0010000
|
---|
629 | && uMsr <= 0xC0011FFF)
|
---|
630 | {
|
---|
631 | /* AMD Seventh and Eighth Generation Processor MSRs. */
|
---|
632 | ulBit = (uMsr - 0xC0001000) * 2;
|
---|
633 | pbMsrBitmap += 0x1000;
|
---|
634 | }
|
---|
635 | else
|
---|
636 | {
|
---|
637 | AssertFailed();
|
---|
638 | return;
|
---|
639 | }
|
---|
640 |
|
---|
641 | Assert(ulBit < 0x3fff /* 16 * 1024 - 1 */);
|
---|
642 | if (enmRead == SVMMSREXIT_INTERCEPT_READ)
|
---|
643 | ASMBitSet(pbMsrBitmap, ulBit);
|
---|
644 | else
|
---|
645 | ASMBitClear(pbMsrBitmap, ulBit);
|
---|
646 |
|
---|
647 | if (enmWrite == SVMMSREXIT_INTERCEPT_WRITE)
|
---|
648 | ASMBitSet(pbMsrBitmap, ulBit + 1);
|
---|
649 | else
|
---|
650 | ASMBitClear(pbMsrBitmap, ulBit + 1);
|
---|
651 |
|
---|
652 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
653 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_IOPM_MSRPM;
|
---|
654 | }
|
---|
655 |
|
---|
656 |
|
---|
657 | /**
|
---|
658 | * Sets up AMD-V for the specified VM.
|
---|
659 | * This function is only called once per-VM during initalization.
|
---|
660 | *
|
---|
661 | * @returns VBox status code.
|
---|
662 | * @param pVM Pointer to the VM.
|
---|
663 | */
|
---|
664 | VMMR0DECL(int) SVMR0SetupVM(PVM pVM)
|
---|
665 | {
|
---|
666 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
667 | AssertReturn(pVM, VERR_INVALID_PARAMETER);
|
---|
668 | Assert(pVM->hm.s.svm.fSupported);
|
---|
669 |
|
---|
670 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
671 | {
|
---|
672 | PVMCPU pVCpu = &pVM->aCpus[i];
|
---|
673 | PSVMVMCB pVmcb = (PSVMVMCB)pVM->aCpus[i].hm.s.svm.pvVmcb;
|
---|
674 |
|
---|
675 | AssertMsgReturn(pVmcb, ("Invalid pVmcb for vcpu[%u]\n", i), VERR_SVM_INVALID_PVMCB);
|
---|
676 |
|
---|
677 | /* Initialize the #VMEXIT history array with end-of-array markers (UINT16_MAX). */
|
---|
678 | Assert(!pVCpu->hm.s.idxExitHistoryFree);
|
---|
679 | HMCPU_EXIT_HISTORY_RESET(pVCpu);
|
---|
680 |
|
---|
681 | /* Trap exceptions unconditionally (debug purposes). */
|
---|
682 | #ifdef HMSVM_ALWAYS_TRAP_PF
|
---|
683 | pVmcb->ctrl.u32InterceptException |= RT_BIT(X86_XCPT_PF);
|
---|
684 | #endif
|
---|
685 | #ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
|
---|
686 | /* If you add any exceptions here, make sure to update hmR0SvmHandleExit(). */
|
---|
687 | pVmcb->ctrl.u32InterceptException |= 0
|
---|
688 | | RT_BIT(X86_XCPT_BP)
|
---|
689 | | RT_BIT(X86_XCPT_DB)
|
---|
690 | | RT_BIT(X86_XCPT_DE)
|
---|
691 | | RT_BIT(X86_XCPT_NM)
|
---|
692 | | RT_BIT(X86_XCPT_UD)
|
---|
693 | | RT_BIT(X86_XCPT_NP)
|
---|
694 | | RT_BIT(X86_XCPT_SS)
|
---|
695 | | RT_BIT(X86_XCPT_GP)
|
---|
696 | | RT_BIT(X86_XCPT_PF)
|
---|
697 | | RT_BIT(X86_XCPT_MF)
|
---|
698 | ;
|
---|
699 | #endif
|
---|
700 |
|
---|
701 | /* Set up unconditional intercepts and conditions. */
|
---|
702 | pVmcb->ctrl.u32InterceptCtrl1 = SVM_CTRL1_INTERCEPT_INTR /* External interrupt causes a #VMEXIT. */
|
---|
703 | | SVM_CTRL1_INTERCEPT_NMI /* Non-maskable interrupts causes a #VMEXIT. */
|
---|
704 | | SVM_CTRL1_INTERCEPT_INIT /* INIT signal causes a #VMEXIT. */
|
---|
705 | | SVM_CTRL1_INTERCEPT_RDPMC /* RDPMC causes a #VMEXIT. */
|
---|
706 | | SVM_CTRL1_INTERCEPT_CPUID /* CPUID causes a #VMEXIT. */
|
---|
707 | | SVM_CTRL1_INTERCEPT_RSM /* RSM causes a #VMEXIT. */
|
---|
708 | | SVM_CTRL1_INTERCEPT_HLT /* HLT causes a #VMEXIT. */
|
---|
709 | | SVM_CTRL1_INTERCEPT_INOUT_BITMAP /* Use the IOPM to cause IOIO #VMEXITs. */
|
---|
710 | | SVM_CTRL1_INTERCEPT_MSR_SHADOW /* MSR access not covered by MSRPM causes a #VMEXIT.*/
|
---|
711 | | SVM_CTRL1_INTERCEPT_INVLPGA /* INVLPGA causes a #VMEXIT. */
|
---|
712 | | SVM_CTRL1_INTERCEPT_SHUTDOWN /* Shutdown events causes a #VMEXIT. */
|
---|
713 | | SVM_CTRL1_INTERCEPT_FERR_FREEZE; /* Intercept "freezing" during legacy FPU handling. */
|
---|
714 |
|
---|
715 | pVmcb->ctrl.u32InterceptCtrl2 = SVM_CTRL2_INTERCEPT_VMRUN /* VMRUN causes a #VMEXIT. */
|
---|
716 | | SVM_CTRL2_INTERCEPT_VMMCALL /* VMMCALL causes a #VMEXIT. */
|
---|
717 | | SVM_CTRL2_INTERCEPT_VMLOAD /* VMLOAD causes a #VMEXIT. */
|
---|
718 | | SVM_CTRL2_INTERCEPT_VMSAVE /* VMSAVE causes a #VMEXIT. */
|
---|
719 | | SVM_CTRL2_INTERCEPT_STGI /* STGI causes a #VMEXIT. */
|
---|
720 | | SVM_CTRL2_INTERCEPT_CLGI /* CLGI causes a #VMEXIT. */
|
---|
721 | | SVM_CTRL2_INTERCEPT_SKINIT /* SKINIT causes a #VMEXIT. */
|
---|
722 | | SVM_CTRL2_INTERCEPT_WBINVD /* WBINVD causes a #VMEXIT. */
|
---|
723 | | SVM_CTRL2_INTERCEPT_MONITOR /* MONITOR causes a #VMEXIT. */
|
---|
724 | | SVM_CTRL2_INTERCEPT_MWAIT; /* MWAIT causes a #VMEXIT. */
|
---|
725 |
|
---|
726 | /* CR0, CR4 reads must be intercepted, our shadow values are not necessarily the same as the guest's. */
|
---|
727 | pVmcb->ctrl.u16InterceptRdCRx = RT_BIT(0) | RT_BIT(4);
|
---|
728 |
|
---|
729 | /* CR0, CR4 writes must be intercepted for the same reasons as above. */
|
---|
730 | pVmcb->ctrl.u16InterceptWrCRx = RT_BIT(0) | RT_BIT(4);
|
---|
731 |
|
---|
732 | /* Intercept all DRx reads and writes by default. Changed later on. */
|
---|
733 | pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
|
---|
734 | pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
|
---|
735 |
|
---|
736 | /* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
|
---|
737 | pVmcb->ctrl.IntCtrl.n.u1VIrqMasking = 1;
|
---|
738 |
|
---|
739 | /* Ignore the priority in the TPR. This is necessary for delivering PIC style (ExtInt) interrupts and we currently
|
---|
740 | deliver both PIC and APIC interrupts alike. See hmR0SvmInjectPendingEvent() */
|
---|
741 | pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR = 1;
|
---|
742 |
|
---|
743 | /* Set IO and MSR bitmap permission bitmap physical addresses. */
|
---|
744 | pVmcb->ctrl.u64IOPMPhysAddr = g_HCPhysIOBitmap;
|
---|
745 | pVmcb->ctrl.u64MSRPMPhysAddr = pVCpu->hm.s.svm.HCPhysMsrBitmap;
|
---|
746 |
|
---|
747 | /* No LBR virtualization. */
|
---|
748 | pVmcb->ctrl.u64LBRVirt = 0;
|
---|
749 |
|
---|
750 | /* Initially set all VMCB clean bits to 0 indicating that everything should be loaded from the VMCB in memory. */
|
---|
751 | pVmcb->ctrl.u64VmcbCleanBits = 0;
|
---|
752 |
|
---|
753 | /* The host ASID MBZ, for the guest start with 1. */
|
---|
754 | pVmcb->ctrl.TLBCtrl.n.u32ASID = 1;
|
---|
755 |
|
---|
756 | /*
|
---|
757 | * Setup the PAT MSR (applicable for Nested Paging only).
|
---|
758 | * The default value should be 0x0007040600070406ULL, but we want to treat all guest memory as WB,
|
---|
759 | * so choose type 6 for all PAT slots.
|
---|
760 | */
|
---|
761 | pVmcb->guest.u64GPAT = UINT64_C(0x0006060606060606);
|
---|
762 |
|
---|
763 | /* Setup Nested Paging. This doesn't change throughout the execution time of the VM. */
|
---|
764 | pVmcb->ctrl.NestedPaging.n.u1NestedPaging = pVM->hm.s.fNestedPaging;
|
---|
765 |
|
---|
766 | /* Without Nested Paging, we need additionally intercepts. */
|
---|
767 | if (!pVM->hm.s.fNestedPaging)
|
---|
768 | {
|
---|
769 | /* CR3 reads/writes must be intercepted; our shadow values differ from the guest values. */
|
---|
770 | pVmcb->ctrl.u16InterceptRdCRx |= RT_BIT(3);
|
---|
771 | pVmcb->ctrl.u16InterceptWrCRx |= RT_BIT(3);
|
---|
772 |
|
---|
773 | /* Intercept INVLPG and task switches (may change CR3, EFLAGS, LDT). */
|
---|
774 | pVmcb->ctrl.u32InterceptCtrl1 |= SVM_CTRL1_INTERCEPT_INVLPG
|
---|
775 | | SVM_CTRL1_INTERCEPT_TASK_SWITCH;
|
---|
776 |
|
---|
777 | /* Page faults must be intercepted to implement shadow paging. */
|
---|
778 | pVmcb->ctrl.u32InterceptException |= RT_BIT(X86_XCPT_PF);
|
---|
779 | }
|
---|
780 |
|
---|
781 | #ifdef HMSVM_ALWAYS_TRAP_TASK_SWITCH
|
---|
782 | pVmcb->ctrl.u32InterceptCtrl1 |= SVM_CTRL1_INTERCEPT_TASK_SWITCH;
|
---|
783 | #endif
|
---|
784 |
|
---|
785 | /*
|
---|
786 | * The following MSRs are saved/restored automatically during the world-switch.
|
---|
787 | * Don't intercept guest read/write accesses to these MSRs.
|
---|
788 | */
|
---|
789 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
790 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_CSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
791 | hmR0SvmSetMsrPermission(pVCpu, MSR_K6_STAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
792 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_SF_MASK, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
793 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_FS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
794 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
795 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_KERNEL_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
796 | hmR0SvmSetMsrPermission(pVCpu, MSR_IA32_SYSENTER_CS, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
797 | hmR0SvmSetMsrPermission(pVCpu, MSR_IA32_SYSENTER_ESP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
798 | hmR0SvmSetMsrPermission(pVCpu, MSR_IA32_SYSENTER_EIP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
799 | }
|
---|
800 |
|
---|
801 | return VINF_SUCCESS;
|
---|
802 | }
|
---|
803 |
|
---|
804 |
|
---|
805 | /**
|
---|
806 | * Invalidates a guest page by guest virtual address.
|
---|
807 | *
|
---|
808 | * @returns VBox status code.
|
---|
809 | * @param pVM Pointer to the VM.
|
---|
810 | * @param pVCpu Pointer to the VMCPU.
|
---|
811 | * @param GCVirt Guest virtual address of the page to invalidate.
|
---|
812 | */
|
---|
813 | VMMR0DECL(int) SVMR0InvalidatePage(PVM pVM, PVMCPU pVCpu, RTGCPTR GCVirt)
|
---|
814 | {
|
---|
815 | AssertReturn(pVM, VERR_INVALID_PARAMETER);
|
---|
816 | Assert(pVM->hm.s.svm.fSupported);
|
---|
817 |
|
---|
818 | bool fFlushPending = pVM->hm.s.svm.fAlwaysFlushTLB || VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TLB_FLUSH);
|
---|
819 |
|
---|
820 | /* Skip it if a TLB flush is already pending. */
|
---|
821 | if (!fFlushPending)
|
---|
822 | {
|
---|
823 | Log4(("SVMR0InvalidatePage %RGv\n", GCVirt));
|
---|
824 |
|
---|
825 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
826 | AssertMsgReturn(pVmcb, ("Invalid pVmcb!\n"), VERR_SVM_INVALID_PVMCB);
|
---|
827 |
|
---|
828 | #if HC_ARCH_BITS == 32
|
---|
829 | /* If we get a flush in 64-bit guest mode, then force a full TLB flush. INVLPGA takes only 32-bit addresses. */
|
---|
830 | if (CPUMIsGuestInLongMode(pVCpu))
|
---|
831 | VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
|
---|
832 | else
|
---|
833 | #endif
|
---|
834 | {
|
---|
835 | SVMR0InvlpgA(GCVirt, pVmcb->ctrl.TLBCtrl.n.u32ASID);
|
---|
836 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbInvlpgVirt);
|
---|
837 | }
|
---|
838 | }
|
---|
839 | return VINF_SUCCESS;
|
---|
840 | }
|
---|
841 |
|
---|
842 |
|
---|
843 | /**
|
---|
844 | * Flushes the appropriate tagged-TLB entries.
|
---|
845 | *
|
---|
846 | * @param pVM Pointer to the VM.
|
---|
847 | * @param pVCpu Pointer to the VMCPU.
|
---|
848 | */
|
---|
849 | static void hmR0SvmFlushTaggedTlb(PVMCPU pVCpu)
|
---|
850 | {
|
---|
851 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
852 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
853 | PHMGLOBALCPUINFO pCpu = HMR0GetCurrentCpu();
|
---|
854 |
|
---|
855 | /*
|
---|
856 | * Force a TLB flush for the first world switch if the current CPU differs from the one we ran on last.
|
---|
857 | * This can happen both for start & resume due to long jumps back to ring-3.
|
---|
858 | * If the TLB flush count changed, another VM (VCPU rather) has hit the ASID limit while flushing the TLB,
|
---|
859 | * so we cannot reuse the ASIDs without flushing.
|
---|
860 | */
|
---|
861 | bool fNewAsid = false;
|
---|
862 | Assert(pCpu->idCpu != NIL_RTCPUID);
|
---|
863 | if ( pVCpu->hm.s.idLastCpu != pCpu->idCpu
|
---|
864 | || pVCpu->hm.s.cTlbFlushes != pCpu->cTlbFlushes)
|
---|
865 | {
|
---|
866 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbWorldSwitch);
|
---|
867 | pVCpu->hm.s.fForceTLBFlush = true;
|
---|
868 | fNewAsid = true;
|
---|
869 | }
|
---|
870 |
|
---|
871 | /* Set TLB flush state as checked until we return from the world switch. */
|
---|
872 | ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true);
|
---|
873 |
|
---|
874 | /* Check for explicit TLB shootdowns. */
|
---|
875 | if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH))
|
---|
876 | {
|
---|
877 | pVCpu->hm.s.fForceTLBFlush = true;
|
---|
878 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlb);
|
---|
879 | }
|
---|
880 |
|
---|
881 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_NOTHING;
|
---|
882 |
|
---|
883 | if (pVM->hm.s.svm.fAlwaysFlushTLB)
|
---|
884 | {
|
---|
885 | /*
|
---|
886 | * This is the AMD erratum 170. We need to flush the entire TLB for each world switch. Sad.
|
---|
887 | */
|
---|
888 | pCpu->uCurrentAsid = 1;
|
---|
889 | pVCpu->hm.s.uCurrentAsid = 1;
|
---|
890 | pVCpu->hm.s.cTlbFlushes = pCpu->cTlbFlushes;
|
---|
891 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
|
---|
892 |
|
---|
893 | /* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
|
---|
894 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
|
---|
895 | }
|
---|
896 | else if (pVCpu->hm.s.fForceTLBFlush)
|
---|
897 | {
|
---|
898 | /* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
|
---|
899 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
|
---|
900 |
|
---|
901 | if (fNewAsid)
|
---|
902 | {
|
---|
903 | ++pCpu->uCurrentAsid;
|
---|
904 | bool fHitASIDLimit = false;
|
---|
905 | if (pCpu->uCurrentAsid >= pVM->hm.s.uMaxAsid)
|
---|
906 | {
|
---|
907 | pCpu->uCurrentAsid = 1; /* Wraparound at 1; host uses 0 */
|
---|
908 | pCpu->cTlbFlushes++; /* All VCPUs that run on this host CPU must use a new VPID. */
|
---|
909 | fHitASIDLimit = true;
|
---|
910 |
|
---|
911 | if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
|
---|
912 | {
|
---|
913 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
|
---|
914 | pCpu->fFlushAsidBeforeUse = true;
|
---|
915 | }
|
---|
916 | else
|
---|
917 | {
|
---|
918 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
|
---|
919 | pCpu->fFlushAsidBeforeUse = false;
|
---|
920 | }
|
---|
921 | }
|
---|
922 |
|
---|
923 | if ( !fHitASIDLimit
|
---|
924 | && pCpu->fFlushAsidBeforeUse)
|
---|
925 | {
|
---|
926 | if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
|
---|
927 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
|
---|
928 | else
|
---|
929 | {
|
---|
930 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
|
---|
931 | pCpu->fFlushAsidBeforeUse = false;
|
---|
932 | }
|
---|
933 | }
|
---|
934 |
|
---|
935 | pVCpu->hm.s.uCurrentAsid = pCpu->uCurrentAsid;
|
---|
936 | pVCpu->hm.s.idLastCpu = pCpu->idCpu;
|
---|
937 | pVCpu->hm.s.cTlbFlushes = pCpu->cTlbFlushes;
|
---|
938 | }
|
---|
939 | else
|
---|
940 | {
|
---|
941 | if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
|
---|
942 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
|
---|
943 | else
|
---|
944 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
|
---|
945 | }
|
---|
946 |
|
---|
947 | pVCpu->hm.s.fForceTLBFlush = false;
|
---|
948 | }
|
---|
949 | /** @todo We never set VMCPU_FF_TLB_SHOOTDOWN anywhere so this path should
|
---|
950 | * not be executed. See hmQueueInvlPage() where it is commented
|
---|
951 | * out. Support individual entry flushing someday. */
|
---|
952 | #if 0
|
---|
953 | else
|
---|
954 | {
|
---|
955 | if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TLB_SHOOTDOWN))
|
---|
956 | {
|
---|
957 | /* Deal with pending TLB shootdown actions which were queued when we were not executing code. */
|
---|
958 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTlbShootdown);
|
---|
959 | for (uint32_t i = 0; i < pVCpu->hm.s.TlbShootdown.cPages; i++)
|
---|
960 | SVMR0InvlpgA(pVCpu->hm.s.TlbShootdown.aPages[i], pVmcb->ctrl.TLBCtrl.n.u32ASID);
|
---|
961 |
|
---|
962 | pVCpu->hm.s.TlbShootdown.cPages = 0;
|
---|
963 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TLB_SHOOTDOWN);
|
---|
964 | }
|
---|
965 | }
|
---|
966 | #endif
|
---|
967 |
|
---|
968 |
|
---|
969 | /* Update VMCB with the ASID. */
|
---|
970 | if (pVmcb->ctrl.TLBCtrl.n.u32ASID != pVCpu->hm.s.uCurrentAsid)
|
---|
971 | {
|
---|
972 | pVmcb->ctrl.TLBCtrl.n.u32ASID = pVCpu->hm.s.uCurrentAsid;
|
---|
973 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_ASID;
|
---|
974 | }
|
---|
975 |
|
---|
976 | AssertMsg(pVCpu->hm.s.idLastCpu == pCpu->idCpu,
|
---|
977 | ("vcpu idLastCpu=%x pcpu idCpu=%x\n", pVCpu->hm.s.idLastCpu, pCpu->idCpu));
|
---|
978 | AssertMsg(pVCpu->hm.s.cTlbFlushes == pCpu->cTlbFlushes,
|
---|
979 | ("Flush count mismatch for cpu %d (%x vs %x)\n", pCpu->idCpu, pVCpu->hm.s.cTlbFlushes, pCpu->cTlbFlushes));
|
---|
980 | AssertMsg(pCpu->uCurrentAsid >= 1 && pCpu->uCurrentAsid < pVM->hm.s.uMaxAsid,
|
---|
981 | ("cpu%d uCurrentAsid = %x\n", pCpu->idCpu, pCpu->uCurrentAsid));
|
---|
982 | AssertMsg(pVCpu->hm.s.uCurrentAsid >= 1 && pVCpu->hm.s.uCurrentAsid < pVM->hm.s.uMaxAsid,
|
---|
983 | ("cpu%d VM uCurrentAsid = %x\n", pCpu->idCpu, pVCpu->hm.s.uCurrentAsid));
|
---|
984 |
|
---|
985 | #ifdef VBOX_WITH_STATISTICS
|
---|
986 | if (pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_NOTHING)
|
---|
987 | STAM_COUNTER_INC(&pVCpu->hm.s.StatNoFlushTlbWorldSwitch);
|
---|
988 | else if ( pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT
|
---|
989 | || pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT_RETAIN_GLOBALS)
|
---|
990 | {
|
---|
991 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushAsid);
|
---|
992 | }
|
---|
993 | else
|
---|
994 | {
|
---|
995 | Assert(pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_ENTIRE);
|
---|
996 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushEntire);
|
---|
997 | }
|
---|
998 | #endif
|
---|
999 | }
|
---|
1000 |
|
---|
1001 |
|
---|
1002 | /** @name 64-bit guest on 32-bit host OS helper functions.
|
---|
1003 | *
|
---|
1004 | * The host CPU is still 64-bit capable but the host OS is running in 32-bit
|
---|
1005 | * mode (code segment, paging). These wrappers/helpers perform the necessary
|
---|
1006 | * bits for the 32->64 switcher.
|
---|
1007 | *
|
---|
1008 | * @{ */
|
---|
1009 | #if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
|
---|
1010 | /**
|
---|
1011 | * Prepares for and executes VMRUN (64-bit guests on a 32-bit host).
|
---|
1012 | *
|
---|
1013 | * @returns VBox status code.
|
---|
1014 | * @param HCPhysVmcbHost Physical address of host VMCB.
|
---|
1015 | * @param HCPhysVmcb Physical address of the VMCB.
|
---|
1016 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1017 | * @param pVM Pointer to the VM.
|
---|
1018 | * @param pVCpu Pointer to the VMCPU.
|
---|
1019 | */
|
---|
1020 | DECLASM(int) SVMR0VMSwitcherRun64(RTHCPHYS HCPhysVmcbHost, RTHCPHYS HCPhysVmcb, PCPUMCTX pCtx, PVM pVM, PVMCPU pVCpu)
|
---|
1021 | {
|
---|
1022 | uint32_t aParam[4];
|
---|
1023 | aParam[0] = (uint32_t)(HCPhysVmcbHost); /* Param 1: HCPhysVmcbHost - Lo. */
|
---|
1024 | aParam[1] = (uint32_t)(HCPhysVmcbHost >> 32); /* Param 1: HCPhysVmcbHost - Hi. */
|
---|
1025 | aParam[2] = (uint32_t)(HCPhysVmcb); /* Param 2: HCPhysVmcb - Lo. */
|
---|
1026 | aParam[3] = (uint32_t)(HCPhysVmcb >> 32); /* Param 2: HCPhysVmcb - Hi. */
|
---|
1027 |
|
---|
1028 | return SVMR0Execute64BitsHandler(pVM, pVCpu, pCtx, HM64ON32OP_SVMRCVMRun64, 4, &aParam[0]);
|
---|
1029 | }
|
---|
1030 |
|
---|
1031 |
|
---|
1032 | /**
|
---|
1033 | * Executes the specified VMRUN handler in 64-bit mode.
|
---|
1034 | *
|
---|
1035 | * @returns VBox status code.
|
---|
1036 | * @param pVM Pointer to the VM.
|
---|
1037 | * @param pVCpu Pointer to the VMCPU.
|
---|
1038 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1039 | * @param enmOp The operation to perform.
|
---|
1040 | * @param cbParam Number of parameters.
|
---|
1041 | * @param paParam Array of 32-bit parameters.
|
---|
1042 | */
|
---|
1043 | VMMR0DECL(int) SVMR0Execute64BitsHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, HM64ON32OP enmOp, uint32_t cbParam,
|
---|
1044 | uint32_t *paParam)
|
---|
1045 | {
|
---|
1046 | AssertReturn(pVM->hm.s.pfnHost32ToGuest64R0, VERR_HM_NO_32_TO_64_SWITCHER);
|
---|
1047 | Assert(enmOp > HM64ON32OP_INVALID && enmOp < HM64ON32OP_END);
|
---|
1048 |
|
---|
1049 | /* Disable interrupts. */
|
---|
1050 | RTHCUINTREG uOldEFlags = ASMIntDisableFlags();
|
---|
1051 |
|
---|
1052 | #ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
|
---|
1053 | RTCPUID idHostCpu = RTMpCpuId();
|
---|
1054 | CPUMR0SetLApic(pVCpu, idHostCpu);
|
---|
1055 | #endif
|
---|
1056 |
|
---|
1057 | CPUMSetHyperESP(pVCpu, VMMGetStackRC(pVCpu));
|
---|
1058 | CPUMSetHyperEIP(pVCpu, enmOp);
|
---|
1059 | for (int i = (int)cbParam - 1; i >= 0; i--)
|
---|
1060 | CPUMPushHyper(pVCpu, paParam[i]);
|
---|
1061 |
|
---|
1062 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatWorldSwitch3264, z);
|
---|
1063 | /* Call the switcher. */
|
---|
1064 | int rc = pVM->hm.s.pfnHost32ToGuest64R0(pVM, RT_OFFSETOF(VM, aCpus[pVCpu->idCpu].cpum) - RT_OFFSETOF(VM, cpum));
|
---|
1065 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatWorldSwitch3264, z);
|
---|
1066 |
|
---|
1067 | /* Restore interrupts. */
|
---|
1068 | ASMSetFlags(uOldEFlags);
|
---|
1069 | return rc;
|
---|
1070 | }
|
---|
1071 |
|
---|
1072 | #endif /* HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) */
|
---|
1073 | /** @} */
|
---|
1074 |
|
---|
1075 |
|
---|
1076 | /**
|
---|
1077 | * Adds an exception to the intercept exception bitmap in the VMCB and updates
|
---|
1078 | * the corresponding VMCB Clean bit.
|
---|
1079 | *
|
---|
1080 | * @param pVmcb Pointer to the VM control block.
|
---|
1081 | * @param u32Xcpt The value of the exception (X86_XCPT_*).
|
---|
1082 | */
|
---|
1083 | DECLINLINE(void) hmR0SvmAddXcptIntercept(PSVMVMCB pVmcb, uint32_t u32Xcpt)
|
---|
1084 | {
|
---|
1085 | if (!(pVmcb->ctrl.u32InterceptException & RT_BIT(u32Xcpt)))
|
---|
1086 | {
|
---|
1087 | pVmcb->ctrl.u32InterceptException |= RT_BIT(u32Xcpt);
|
---|
1088 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
1089 | }
|
---|
1090 | }
|
---|
1091 |
|
---|
1092 |
|
---|
1093 | /**
|
---|
1094 | * Removes an exception from the intercept-exception bitmap in the VMCB and
|
---|
1095 | * updates the corresponding VMCB Clean bit.
|
---|
1096 | *
|
---|
1097 | * @param pVmcb Pointer to the VM control block.
|
---|
1098 | * @param u32Xcpt The value of the exception (X86_XCPT_*).
|
---|
1099 | */
|
---|
1100 | DECLINLINE(void) hmR0SvmRemoveXcptIntercept(PSVMVMCB pVmcb, uint32_t u32Xcpt)
|
---|
1101 | {
|
---|
1102 | #ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
|
---|
1103 | if (pVmcb->ctrl.u32InterceptException & RT_BIT(u32Xcpt))
|
---|
1104 | {
|
---|
1105 | pVmcb->ctrl.u32InterceptException &= ~RT_BIT(u32Xcpt);
|
---|
1106 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
1107 | }
|
---|
1108 | #endif
|
---|
1109 | }
|
---|
1110 |
|
---|
1111 |
|
---|
1112 | /**
|
---|
1113 | * Loads the guest CR0 control register into the guest-state area in the VMCB.
|
---|
1114 | * Although the guest CR0 is a separate field in the VMCB we have to consider
|
---|
1115 | * the FPU state itself which is shared between the host and the guest.
|
---|
1116 | *
|
---|
1117 | * @returns VBox status code.
|
---|
1118 | * @param pVM Pointer to the VMCPU.
|
---|
1119 | * @param pVmcb Pointer to the VM control block.
|
---|
1120 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1121 | *
|
---|
1122 | * @remarks No-long-jump zone!!!
|
---|
1123 | */
|
---|
1124 | static void hmR0SvmLoadSharedCR0(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1125 | {
|
---|
1126 | /*
|
---|
1127 | * Guest CR0.
|
---|
1128 | */
|
---|
1129 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
1130 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0))
|
---|
1131 | {
|
---|
1132 | uint64_t u64GuestCR0 = pCtx->cr0;
|
---|
1133 |
|
---|
1134 | /* Always enable caching. */
|
---|
1135 | u64GuestCR0 &= ~(X86_CR0_CD | X86_CR0_NW);
|
---|
1136 |
|
---|
1137 | /*
|
---|
1138 | * When Nested Paging is not available use shadow page tables and intercept #PFs (the latter done in SVMR0SetupVM()).
|
---|
1139 | */
|
---|
1140 | if (!pVM->hm.s.fNestedPaging)
|
---|
1141 | {
|
---|
1142 | u64GuestCR0 |= X86_CR0_PG; /* When Nested Paging is not available, use shadow page tables. */
|
---|
1143 | u64GuestCR0 |= X86_CR0_WP; /* Guest CPL 0 writes to its read-only pages should cause a #PF #VMEXIT. */
|
---|
1144 | }
|
---|
1145 |
|
---|
1146 | /*
|
---|
1147 | * Guest FPU bits.
|
---|
1148 | */
|
---|
1149 | bool fInterceptNM = false;
|
---|
1150 | bool fInterceptMF = false;
|
---|
1151 | u64GuestCR0 |= X86_CR0_NE; /* Use internal x87 FPU exceptions handling rather than external interrupts. */
|
---|
1152 | if (CPUMIsGuestFPUStateActive(pVCpu))
|
---|
1153 | {
|
---|
1154 | /* Catch floating point exceptions if we need to report them to the guest in a different way. */
|
---|
1155 | if (!(u64GuestCR0 & X86_CR0_NE))
|
---|
1156 | {
|
---|
1157 | Log4(("hmR0SvmLoadGuestControlRegs: Intercepting Guest CR0.MP Old-style FPU handling!!!\n"));
|
---|
1158 | fInterceptMF = true;
|
---|
1159 | }
|
---|
1160 | }
|
---|
1161 | else
|
---|
1162 | {
|
---|
1163 | fInterceptNM = true; /* Guest FPU inactive, #VMEXIT on #NM for lazy FPU loading. */
|
---|
1164 | u64GuestCR0 |= X86_CR0_TS /* Guest can task switch quickly and do lazy FPU syncing. */
|
---|
1165 | | X86_CR0_MP; /* FWAIT/WAIT should not ignore CR0.TS and should generate #NM. */
|
---|
1166 | }
|
---|
1167 |
|
---|
1168 | /*
|
---|
1169 | * Update the exception intercept bitmap.
|
---|
1170 | */
|
---|
1171 | if (fInterceptNM)
|
---|
1172 | hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_NM);
|
---|
1173 | else
|
---|
1174 | hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_NM);
|
---|
1175 |
|
---|
1176 | if (fInterceptMF)
|
---|
1177 | hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_MF);
|
---|
1178 | else
|
---|
1179 | hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_MF);
|
---|
1180 |
|
---|
1181 | pVmcb->guest.u64CR0 = u64GuestCR0;
|
---|
1182 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1183 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
1184 | }
|
---|
1185 | }
|
---|
1186 |
|
---|
1187 |
|
---|
1188 | /**
|
---|
1189 | * Loads the guest control registers (CR2, CR3, CR4) into the VMCB.
|
---|
1190 | *
|
---|
1191 | * @returns VBox status code.
|
---|
1192 | * @param pVCpu Pointer to the VMCPU.
|
---|
1193 | * @param pVmcb Pointer to the VM control block.
|
---|
1194 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1195 | *
|
---|
1196 | * @remarks No-long-jump zone!!!
|
---|
1197 | */
|
---|
1198 | static int hmR0SvmLoadGuestControlRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1199 | {
|
---|
1200 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
1201 |
|
---|
1202 | /*
|
---|
1203 | * Guest CR2.
|
---|
1204 | */
|
---|
1205 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR2))
|
---|
1206 | {
|
---|
1207 | pVmcb->guest.u64CR2 = pCtx->cr2;
|
---|
1208 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CR2;
|
---|
1209 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR2);
|
---|
1210 | }
|
---|
1211 |
|
---|
1212 | /*
|
---|
1213 | * Guest CR3.
|
---|
1214 | */
|
---|
1215 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR3))
|
---|
1216 | {
|
---|
1217 | if (pVM->hm.s.fNestedPaging)
|
---|
1218 | {
|
---|
1219 | PGMMODE enmShwPagingMode;
|
---|
1220 | #if HC_ARCH_BITS == 32
|
---|
1221 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
1222 | enmShwPagingMode = PGMMODE_AMD64_NX;
|
---|
1223 | else
|
---|
1224 | #endif
|
---|
1225 | enmShwPagingMode = PGMGetHostMode(pVM);
|
---|
1226 |
|
---|
1227 | pVmcb->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVCpu, enmShwPagingMode);
|
---|
1228 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
|
---|
1229 | Assert(pVmcb->ctrl.u64NestedPagingCR3);
|
---|
1230 | pVmcb->guest.u64CR3 = pCtx->cr3;
|
---|
1231 | }
|
---|
1232 | else
|
---|
1233 | pVmcb->guest.u64CR3 = PGMGetHyperCR3(pVCpu);
|
---|
1234 |
|
---|
1235 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1236 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR3);
|
---|
1237 | }
|
---|
1238 |
|
---|
1239 | /*
|
---|
1240 | * Guest CR4.
|
---|
1241 | */
|
---|
1242 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR4))
|
---|
1243 | {
|
---|
1244 | uint64_t u64GuestCR4 = pCtx->cr4;
|
---|
1245 | if (!pVM->hm.s.fNestedPaging)
|
---|
1246 | {
|
---|
1247 | switch (pVCpu->hm.s.enmShadowMode)
|
---|
1248 | {
|
---|
1249 | case PGMMODE_REAL:
|
---|
1250 | case PGMMODE_PROTECTED: /* Protected mode, no paging. */
|
---|
1251 | AssertFailed();
|
---|
1252 | return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
|
---|
1253 |
|
---|
1254 | case PGMMODE_32_BIT: /* 32-bit paging. */
|
---|
1255 | u64GuestCR4 &= ~X86_CR4_PAE;
|
---|
1256 | break;
|
---|
1257 |
|
---|
1258 | case PGMMODE_PAE: /* PAE paging. */
|
---|
1259 | case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
|
---|
1260 | /** Must use PAE paging as we could use physical memory > 4 GB */
|
---|
1261 | u64GuestCR4 |= X86_CR4_PAE;
|
---|
1262 | break;
|
---|
1263 |
|
---|
1264 | case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
|
---|
1265 | case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
|
---|
1266 | #ifdef VBOX_ENABLE_64_BITS_GUESTS
|
---|
1267 | break;
|
---|
1268 | #else
|
---|
1269 | AssertFailed();
|
---|
1270 | return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
|
---|
1271 | #endif
|
---|
1272 |
|
---|
1273 | default: /* shut up gcc */
|
---|
1274 | AssertFailed();
|
---|
1275 | return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
|
---|
1276 | }
|
---|
1277 | }
|
---|
1278 |
|
---|
1279 | pVmcb->guest.u64CR4 = u64GuestCR4;
|
---|
1280 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1281 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR4);
|
---|
1282 | }
|
---|
1283 |
|
---|
1284 | return VINF_SUCCESS;
|
---|
1285 | }
|
---|
1286 |
|
---|
1287 |
|
---|
1288 | /**
|
---|
1289 | * Loads the guest segment registers into the VMCB.
|
---|
1290 | *
|
---|
1291 | * @returns VBox status code.
|
---|
1292 | * @param pVCpu Pointer to the VMCPU.
|
---|
1293 | * @param pVmcb Pointer to the VM control block.
|
---|
1294 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1295 | *
|
---|
1296 | * @remarks No-long-jump zone!!!
|
---|
1297 | */
|
---|
1298 | static void hmR0SvmLoadGuestSegmentRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1299 | {
|
---|
1300 | /* Guest Segment registers: CS, SS, DS, ES, FS, GS. */
|
---|
1301 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS))
|
---|
1302 | {
|
---|
1303 | HMSVM_LOAD_SEG_REG(CS, cs);
|
---|
1304 | HMSVM_LOAD_SEG_REG(SS, ss);
|
---|
1305 | HMSVM_LOAD_SEG_REG(DS, ds);
|
---|
1306 | HMSVM_LOAD_SEG_REG(ES, es);
|
---|
1307 | HMSVM_LOAD_SEG_REG(FS, fs);
|
---|
1308 | HMSVM_LOAD_SEG_REG(GS, gs);
|
---|
1309 |
|
---|
1310 | pVmcb->guest.u8CPL = pCtx->ss.Attr.n.u2Dpl;
|
---|
1311 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_SEG;
|
---|
1312 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS);
|
---|
1313 | }
|
---|
1314 |
|
---|
1315 | /* Guest TR. */
|
---|
1316 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_TR))
|
---|
1317 | {
|
---|
1318 | HMSVM_LOAD_SEG_REG(TR, tr);
|
---|
1319 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_TR);
|
---|
1320 | }
|
---|
1321 |
|
---|
1322 | /* Guest LDTR. */
|
---|
1323 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_LDTR))
|
---|
1324 | {
|
---|
1325 | HMSVM_LOAD_SEG_REG(LDTR, ldtr);
|
---|
1326 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_LDTR);
|
---|
1327 | }
|
---|
1328 |
|
---|
1329 | /* Guest GDTR. */
|
---|
1330 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_GDTR))
|
---|
1331 | {
|
---|
1332 | pVmcb->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
|
---|
1333 | pVmcb->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
|
---|
1334 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
|
---|
1335 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_GDTR);
|
---|
1336 | }
|
---|
1337 |
|
---|
1338 | /* Guest IDTR. */
|
---|
1339 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_IDTR))
|
---|
1340 | {
|
---|
1341 | pVmcb->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
|
---|
1342 | pVmcb->guest.IDTR.u64Base = pCtx->idtr.pIdt;
|
---|
1343 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
|
---|
1344 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_IDTR);
|
---|
1345 | }
|
---|
1346 | }
|
---|
1347 |
|
---|
1348 |
|
---|
1349 | /**
|
---|
1350 | * Loads the guest MSRs into the VMCB.
|
---|
1351 | *
|
---|
1352 | * @param pVCpu Pointer to the VMCPU.
|
---|
1353 | * @param pVmcb Pointer to the VM control block.
|
---|
1354 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1355 | *
|
---|
1356 | * @remarks No-long-jump zone!!!
|
---|
1357 | */
|
---|
1358 | static void hmR0SvmLoadGuestMsrs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1359 | {
|
---|
1360 | /* Guest Sysenter MSRs. */
|
---|
1361 | pVmcb->guest.u64SysEnterCS = pCtx->SysEnter.cs;
|
---|
1362 | pVmcb->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
|
---|
1363 | pVmcb->guest.u64SysEnterESP = pCtx->SysEnter.esp;
|
---|
1364 |
|
---|
1365 | /*
|
---|
1366 | * Guest EFER MSR.
|
---|
1367 | * AMD-V requires guest EFER.SVME to be set. Weird.
|
---|
1368 | * See AMD spec. 15.5.1 "Basic Operation" | "Canonicalization and Consistency Checks".
|
---|
1369 | */
|
---|
1370 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_EFER_MSR))
|
---|
1371 | {
|
---|
1372 | pVmcb->guest.u64EFER = pCtx->msrEFER | MSR_K6_EFER_SVME;
|
---|
1373 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1374 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_EFER_MSR);
|
---|
1375 | }
|
---|
1376 |
|
---|
1377 | /* 64-bit MSRs. */
|
---|
1378 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
1379 | {
|
---|
1380 | pVmcb->guest.FS.u64Base = pCtx->fs.u64Base;
|
---|
1381 | pVmcb->guest.GS.u64Base = pCtx->gs.u64Base;
|
---|
1382 | }
|
---|
1383 | else
|
---|
1384 | {
|
---|
1385 | /* If the guest isn't in 64-bit mode, clear MSR_K6_LME bit from guest EFER otherwise AMD-V expects amd64 shadow paging. */
|
---|
1386 | if (pCtx->msrEFER & MSR_K6_EFER_LME)
|
---|
1387 | {
|
---|
1388 | pVmcb->guest.u64EFER &= ~MSR_K6_EFER_LME;
|
---|
1389 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1390 | }
|
---|
1391 | }
|
---|
1392 |
|
---|
1393 |
|
---|
1394 | /** @todo The following are used in 64-bit only (SYSCALL/SYSRET) but they might
|
---|
1395 | * be writable in 32-bit mode. Clarify with AMD spec. */
|
---|
1396 | pVmcb->guest.u64STAR = pCtx->msrSTAR;
|
---|
1397 | pVmcb->guest.u64LSTAR = pCtx->msrLSTAR;
|
---|
1398 | pVmcb->guest.u64CSTAR = pCtx->msrCSTAR;
|
---|
1399 | pVmcb->guest.u64SFMASK = pCtx->msrSFMASK;
|
---|
1400 | pVmcb->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE;
|
---|
1401 | }
|
---|
1402 |
|
---|
1403 |
|
---|
1404 | /**
|
---|
1405 | * Loads the guest state into the VMCB and programs the necessary intercepts
|
---|
1406 | * accordingly.
|
---|
1407 | *
|
---|
1408 | * @param pVCpu Pointer to the VMCPU.
|
---|
1409 | * @param pVmcb Pointer to the VM control block.
|
---|
1410 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1411 | *
|
---|
1412 | * @remarks No-long-jump zone!!!
|
---|
1413 | * @remarks Requires EFLAGS to be up-to-date in the VMCB!
|
---|
1414 | */
|
---|
1415 | static void hmR0SvmLoadSharedDebugState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1416 | {
|
---|
1417 | if (!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_DEBUG))
|
---|
1418 | return;
|
---|
1419 | Assert((pCtx->dr[6] & X86_DR6_RA1_MASK) == X86_DR6_RA1_MASK); Assert((pCtx->dr[6] & X86_DR6_RAZ_MASK) == 0);
|
---|
1420 | Assert((pCtx->dr[7] & X86_DR7_RA1_MASK) == X86_DR7_RA1_MASK); Assert((pCtx->dr[7] & X86_DR7_RAZ_MASK) == 0);
|
---|
1421 |
|
---|
1422 | bool fInterceptDB = false;
|
---|
1423 | bool fInterceptMovDRx = false;
|
---|
1424 |
|
---|
1425 | /*
|
---|
1426 | * Anyone single stepping on the host side? If so, we'll have to use the
|
---|
1427 | * trap flag in the guest EFLAGS since AMD-V doesn't have a trap flag on
|
---|
1428 | * the VMM level like the VT-x implementations does.
|
---|
1429 | */
|
---|
1430 | bool const fStepping = pVCpu->hm.s.fSingleInstruction || DBGFIsStepping(pVCpu);
|
---|
1431 | if (fStepping)
|
---|
1432 | {
|
---|
1433 | pVCpu->hm.s.fClearTrapFlag = true;
|
---|
1434 | pVmcb->guest.u64RFlags |= X86_EFL_TF;
|
---|
1435 | fInterceptDB = true;
|
---|
1436 | fInterceptMovDRx = true; /* Need clean DR6, no guest mess. */
|
---|
1437 | }
|
---|
1438 |
|
---|
1439 | if ( fStepping
|
---|
1440 | || (CPUMGetHyperDR7(pVCpu) & X86_DR7_ENABLED_MASK))
|
---|
1441 | {
|
---|
1442 | /*
|
---|
1443 | * Use the combined guest and host DRx values found in the hypervisor
|
---|
1444 | * register set because the debugger has breakpoints active or someone
|
---|
1445 | * is single stepping on the host side.
|
---|
1446 | *
|
---|
1447 | * Note! DBGF expects a clean DR6 state before executing guest code.
|
---|
1448 | */
|
---|
1449 | #if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
|
---|
1450 | if ( CPUMIsGuestInLongModeEx(pCtx)
|
---|
1451 | && !CPUMIsHyperDebugStateActivePending(pVCpu))
|
---|
1452 | {
|
---|
1453 | CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
|
---|
1454 | Assert(!CPUMIsGuestDebugStateActivePending(pVCpu));
|
---|
1455 | Assert(CPUMIsHyperDebugStateActivePending(pVCpu));
|
---|
1456 | }
|
---|
1457 | else
|
---|
1458 | #endif
|
---|
1459 | if (!CPUMIsHyperDebugStateActive(pVCpu))
|
---|
1460 | {
|
---|
1461 | CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
|
---|
1462 | Assert(!CPUMIsGuestDebugStateActive(pVCpu));
|
---|
1463 | Assert(CPUMIsHyperDebugStateActive(pVCpu));
|
---|
1464 | }
|
---|
1465 |
|
---|
1466 | /* Update DR6 & DR7. (The other DRx values are handled by CPUM one way or the other.) */
|
---|
1467 | if ( pVmcb->guest.u64DR6 != X86_DR6_INIT_VAL
|
---|
1468 | || pVmcb->guest.u64DR7 != CPUMGetHyperDR7(pVCpu))
|
---|
1469 | {
|
---|
1470 | pVmcb->guest.u64DR7 = CPUMGetHyperDR7(pVCpu);
|
---|
1471 | pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
|
---|
1472 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
|
---|
1473 | pVCpu->hm.s.fUsingHyperDR7 = true;
|
---|
1474 | }
|
---|
1475 |
|
---|
1476 | /** @todo If we cared, we could optimize to allow the guest to read registers
|
---|
1477 | * with the same values. */
|
---|
1478 | fInterceptDB = true;
|
---|
1479 | fInterceptMovDRx = true;
|
---|
1480 | Log5(("hmR0SvmLoadSharedDebugState: Loaded hyper DRx\n"));
|
---|
1481 | }
|
---|
1482 | else
|
---|
1483 | {
|
---|
1484 | /*
|
---|
1485 | * Update DR6, DR7 with the guest values if necessary.
|
---|
1486 | */
|
---|
1487 | if ( pVmcb->guest.u64DR7 != pCtx->dr[7]
|
---|
1488 | || pVmcb->guest.u64DR6 != pCtx->dr[6])
|
---|
1489 | {
|
---|
1490 | pVmcb->guest.u64DR7 = pCtx->dr[7];
|
---|
1491 | pVmcb->guest.u64DR6 = pCtx->dr[6];
|
---|
1492 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
|
---|
1493 | pVCpu->hm.s.fUsingHyperDR7 = false;
|
---|
1494 | }
|
---|
1495 |
|
---|
1496 | /*
|
---|
1497 | * If the guest has enabled debug registers, we need to load them prior to
|
---|
1498 | * executing guest code so they'll trigger at the right time.
|
---|
1499 | */
|
---|
1500 | if (pCtx->dr[7] & (X86_DR7_ENABLED_MASK | X86_DR7_GD)) /** @todo Why GD? */
|
---|
1501 | {
|
---|
1502 | #if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
|
---|
1503 | if ( CPUMIsGuestInLongModeEx(pCtx)
|
---|
1504 | && !CPUMIsGuestDebugStateActivePending(pVCpu))
|
---|
1505 | {
|
---|
1506 | CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
|
---|
1507 | STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
|
---|
1508 | Assert(!CPUMIsHyperDebugStateActivePending(pVCpu));
|
---|
1509 | Assert(CPUMIsGuestDebugStateActivePending(pVCpu));
|
---|
1510 | }
|
---|
1511 | else
|
---|
1512 | #endif
|
---|
1513 | if (!CPUMIsGuestDebugStateActive(pVCpu))
|
---|
1514 | {
|
---|
1515 | CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
|
---|
1516 | STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
|
---|
1517 | Assert(!CPUMIsHyperDebugStateActive(pVCpu));
|
---|
1518 | Assert(CPUMIsGuestDebugStateActive(pVCpu));
|
---|
1519 | }
|
---|
1520 | Log5(("hmR0SvmLoadSharedDebugState: Loaded guest DRx\n"));
|
---|
1521 | }
|
---|
1522 | /*
|
---|
1523 | * If no debugging enabled, we'll lazy load DR0-3. We don't need to
|
---|
1524 | * intercept #DB as DR6 is updated in the VMCB.
|
---|
1525 | */
|
---|
1526 | #if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
|
---|
1527 | else if ( !CPUMIsGuestDebugStateActivePending(pVCpu)
|
---|
1528 | && !CPUMIsGuestDebugStateActive(pVCpu))
|
---|
1529 | #else
|
---|
1530 | else if (!CPUMIsGuestDebugStateActive(pVCpu))
|
---|
1531 | #endif
|
---|
1532 | {
|
---|
1533 | fInterceptMovDRx = true;
|
---|
1534 | }
|
---|
1535 | }
|
---|
1536 |
|
---|
1537 | /*
|
---|
1538 | * Set up the intercepts.
|
---|
1539 | */
|
---|
1540 | if (fInterceptDB)
|
---|
1541 | hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_DB);
|
---|
1542 | else
|
---|
1543 | hmR0SvmRemoveXcptIntercept(pVmcb, X86_XCPT_DB);
|
---|
1544 |
|
---|
1545 | if (fInterceptMovDRx)
|
---|
1546 | {
|
---|
1547 | if ( pVmcb->ctrl.u16InterceptRdDRx != 0xffff
|
---|
1548 | || pVmcb->ctrl.u16InterceptWrDRx != 0xffff)
|
---|
1549 | {
|
---|
1550 | pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
|
---|
1551 | pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
|
---|
1552 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
1553 | }
|
---|
1554 | }
|
---|
1555 | else
|
---|
1556 | {
|
---|
1557 | if ( pVmcb->ctrl.u16InterceptRdDRx
|
---|
1558 | || pVmcb->ctrl.u16InterceptWrDRx)
|
---|
1559 | {
|
---|
1560 | pVmcb->ctrl.u16InterceptRdDRx = 0;
|
---|
1561 | pVmcb->ctrl.u16InterceptWrDRx = 0;
|
---|
1562 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
1563 | }
|
---|
1564 | }
|
---|
1565 |
|
---|
1566 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_DEBUG);
|
---|
1567 | }
|
---|
1568 |
|
---|
1569 |
|
---|
1570 | /**
|
---|
1571 | * Loads the guest APIC state (currently just the TPR).
|
---|
1572 | *
|
---|
1573 | * @returns VBox status code.
|
---|
1574 | * @param pVCpu Pointer to the VMCPU.
|
---|
1575 | * @param pVmcb Pointer to the VM control block.
|
---|
1576 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1577 | */
|
---|
1578 | static int hmR0SvmLoadGuestApicState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1579 | {
|
---|
1580 | if (!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE))
|
---|
1581 | return VINF_SUCCESS;
|
---|
1582 |
|
---|
1583 | bool fPendingIntr;
|
---|
1584 | uint8_t u8Tpr;
|
---|
1585 | int rc = PDMApicGetTPR(pVCpu, &u8Tpr, &fPendingIntr, NULL /* pu8PendingIrq */);
|
---|
1586 | AssertRCReturn(rc, rc);
|
---|
1587 |
|
---|
1588 | /* Assume that we need to trap all TPR accesses and thus need not check on
|
---|
1589 | every #VMEXIT if we should update the TPR. */
|
---|
1590 | Assert(pVmcb->ctrl.IntCtrl.n.u1VIrqMasking);
|
---|
1591 | pVCpu->hm.s.svm.fSyncVTpr = false;
|
---|
1592 |
|
---|
1593 | /* 32-bit guests uses LSTAR MSR for patching guest code which touches the TPR. */
|
---|
1594 | if (pVCpu->CTX_SUFF(pVM)->hm.s.fTPRPatchingActive)
|
---|
1595 | {
|
---|
1596 | pCtx->msrLSTAR = u8Tpr;
|
---|
1597 |
|
---|
1598 | /* If there are interrupts pending, intercept LSTAR writes, otherwise don't intercept reads or writes. */
|
---|
1599 | if (fPendingIntr)
|
---|
1600 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_INTERCEPT_WRITE);
|
---|
1601 | else
|
---|
1602 | {
|
---|
1603 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
1604 | pVCpu->hm.s.svm.fSyncVTpr = true;
|
---|
1605 | }
|
---|
1606 | }
|
---|
1607 | else
|
---|
1608 | {
|
---|
1609 | /* Bits 3-0 of the VTPR field correspond to bits 7-4 of the TPR (which is the Task-Priority Class). */
|
---|
1610 | pVmcb->ctrl.IntCtrl.n.u8VTPR = (u8Tpr >> 4);
|
---|
1611 |
|
---|
1612 | /* If there are interrupts pending, intercept CR8 writes to evaluate ASAP if we can deliver the interrupt to the guest. */
|
---|
1613 | if (fPendingIntr)
|
---|
1614 | pVmcb->ctrl.u16InterceptWrCRx |= RT_BIT(8);
|
---|
1615 | else
|
---|
1616 | {
|
---|
1617 | pVmcb->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
|
---|
1618 | pVCpu->hm.s.svm.fSyncVTpr = true;
|
---|
1619 | }
|
---|
1620 |
|
---|
1621 | pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS | HMSVM_VMCB_CLEAN_TPR);
|
---|
1622 | }
|
---|
1623 |
|
---|
1624 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
1625 | return rc;
|
---|
1626 | }
|
---|
1627 |
|
---|
1628 |
|
---|
1629 | /**
|
---|
1630 | * Sets up the appropriate function to run guest code.
|
---|
1631 | *
|
---|
1632 | * @returns VBox status code.
|
---|
1633 | * @param pVCpu Pointer to the VMCPU.
|
---|
1634 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1635 | *
|
---|
1636 | * @remarks No-long-jump zone!!!
|
---|
1637 | */
|
---|
1638 | static int hmR0SvmSetupVMRunHandler(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
1639 | {
|
---|
1640 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
1641 | {
|
---|
1642 | #ifndef VBOX_ENABLE_64_BITS_GUESTS
|
---|
1643 | return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
|
---|
1644 | #endif
|
---|
1645 | Assert(pVCpu->CTX_SUFF(pVM)->hm.s.fAllow64BitGuests); /* Guaranteed by hmR3InitFinalizeR0(). */
|
---|
1646 | #if HC_ARCH_BITS == 32 && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
|
---|
1647 | /* 32-bit host. We need to switch to 64-bit before running the 64-bit guest. */
|
---|
1648 | pVCpu->hm.s.svm.pfnVMRun = SVMR0VMSwitcherRun64;
|
---|
1649 | #else
|
---|
1650 | /* 64-bit host or hybrid host. */
|
---|
1651 | pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun64;
|
---|
1652 | #endif
|
---|
1653 | }
|
---|
1654 | else
|
---|
1655 | {
|
---|
1656 | /* Guest is not in long mode, use the 32-bit handler. */
|
---|
1657 | pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun;
|
---|
1658 | }
|
---|
1659 | return VINF_SUCCESS;
|
---|
1660 | }
|
---|
1661 |
|
---|
1662 |
|
---|
1663 | /**
|
---|
1664 | * Enters the AMD-V session.
|
---|
1665 | *
|
---|
1666 | * @returns VBox status code.
|
---|
1667 | * @param pVM Pointer to the VM.
|
---|
1668 | * @param pVCpu Pointer to the VMCPU.
|
---|
1669 | * @param pCpu Pointer to the CPU info struct.
|
---|
1670 | */
|
---|
1671 | VMMR0DECL(int) SVMR0Enter(PVM pVM, PVMCPU pVCpu, PHMGLOBALCPUINFO pCpu)
|
---|
1672 | {
|
---|
1673 | AssertPtr(pVM);
|
---|
1674 | AssertPtr(pVCpu);
|
---|
1675 | Assert(pVM->hm.s.svm.fSupported);
|
---|
1676 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
1677 | NOREF(pVM); NOREF(pCpu);
|
---|
1678 |
|
---|
1679 | LogFlowFunc(("pVM=%p pVCpu=%p\n", pVM, pVCpu));
|
---|
1680 | Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT | HM_CHANGED_HOST_GUEST_SHARED_STATE));
|
---|
1681 |
|
---|
1682 | pVCpu->hm.s.fLeaveDone = false;
|
---|
1683 | return VINF_SUCCESS;
|
---|
1684 | }
|
---|
1685 |
|
---|
1686 |
|
---|
1687 | /**
|
---|
1688 | * Thread-context callback for AMD-V.
|
---|
1689 | *
|
---|
1690 | * @param enmEvent The thread-context event.
|
---|
1691 | * @param pVCpu Pointer to the VMCPU.
|
---|
1692 | * @param fGlobalInit Whether global VT-x/AMD-V init. is used.
|
---|
1693 | * @thread EMT(pVCpu)
|
---|
1694 | */
|
---|
1695 | VMMR0DECL(void) SVMR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, PVMCPU pVCpu, bool fGlobalInit)
|
---|
1696 | {
|
---|
1697 | NOREF(fGlobalInit);
|
---|
1698 |
|
---|
1699 | switch (enmEvent)
|
---|
1700 | {
|
---|
1701 | case RTTHREADCTXEVENT_PREEMPTING:
|
---|
1702 | {
|
---|
1703 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
1704 | Assert(VMMR0ThreadCtxHooksAreRegistered(pVCpu));
|
---|
1705 | VMCPU_ASSERT_EMT(pVCpu);
|
---|
1706 |
|
---|
1707 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
1708 | PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
|
---|
1709 |
|
---|
1710 | /* No longjmps (log-flush, locks) in this fragile context. */
|
---|
1711 | VMMRZCallRing3Disable(pVCpu);
|
---|
1712 |
|
---|
1713 | if (!pVCpu->hm.s.fLeaveDone)
|
---|
1714 | {
|
---|
1715 | hmR0SvmLeave(pVM, pVCpu, pCtx);
|
---|
1716 | pVCpu->hm.s.fLeaveDone = true;
|
---|
1717 | }
|
---|
1718 |
|
---|
1719 | /* Leave HM context, takes care of local init (term). */
|
---|
1720 | int rc = HMR0LeaveCpu(pVCpu);
|
---|
1721 | AssertRC(rc); NOREF(rc);
|
---|
1722 |
|
---|
1723 | /* Restore longjmp state. */
|
---|
1724 | VMMRZCallRing3Enable(pVCpu);
|
---|
1725 | STAM_COUNTER_INC(&pVCpu->hm.s.StatPreemptPreempting);
|
---|
1726 | break;
|
---|
1727 | }
|
---|
1728 |
|
---|
1729 | case RTTHREADCTXEVENT_RESUMED:
|
---|
1730 | {
|
---|
1731 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
1732 | Assert(VMMR0ThreadCtxHooksAreRegistered(pVCpu));
|
---|
1733 | VMCPU_ASSERT_EMT(pVCpu);
|
---|
1734 |
|
---|
1735 | /* No longjmps (log-flush, locks) in this fragile context. */
|
---|
1736 | VMMRZCallRing3Disable(pVCpu);
|
---|
1737 |
|
---|
1738 | /*
|
---|
1739 | * Initialize the bare minimum state required for HM. This takes care of
|
---|
1740 | * initializing AMD-V if necessary (onlined CPUs, local init etc.)
|
---|
1741 | */
|
---|
1742 | int rc = HMR0EnterCpu(pVCpu);
|
---|
1743 | AssertRC(rc); NOREF(rc);
|
---|
1744 | Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT | HM_CHANGED_HOST_GUEST_SHARED_STATE));
|
---|
1745 |
|
---|
1746 | pVCpu->hm.s.fLeaveDone = false;
|
---|
1747 |
|
---|
1748 | /* Restore longjmp state. */
|
---|
1749 | VMMRZCallRing3Enable(pVCpu);
|
---|
1750 | break;
|
---|
1751 | }
|
---|
1752 |
|
---|
1753 | default:
|
---|
1754 | break;
|
---|
1755 | }
|
---|
1756 | }
|
---|
1757 |
|
---|
1758 |
|
---|
1759 | /**
|
---|
1760 | * Saves the host state.
|
---|
1761 | *
|
---|
1762 | * @returns VBox status code.
|
---|
1763 | * @param pVM Pointer to the VM.
|
---|
1764 | * @param pVCpu Pointer to the VMCPU.
|
---|
1765 | *
|
---|
1766 | * @remarks No-long-jump zone!!!
|
---|
1767 | */
|
---|
1768 | VMMR0DECL(int) SVMR0SaveHostState(PVM pVM, PVMCPU pVCpu)
|
---|
1769 | {
|
---|
1770 | NOREF(pVM);
|
---|
1771 | NOREF(pVCpu);
|
---|
1772 | /* Nothing to do here. AMD-V does this for us automatically during the world-switch. */
|
---|
1773 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT);
|
---|
1774 | return VINF_SUCCESS;
|
---|
1775 | }
|
---|
1776 |
|
---|
1777 |
|
---|
1778 | /**
|
---|
1779 | * Loads the guest state into the VMCB. The CPU state will be loaded from these
|
---|
1780 | * fields on every successful VM-entry.
|
---|
1781 | *
|
---|
1782 | * Also sets up the appropriate VMRUN function to execute guest code based on
|
---|
1783 | * the guest CPU mode.
|
---|
1784 | *
|
---|
1785 | * @returns VBox status code.
|
---|
1786 | * @param pVM Pointer to the VM.
|
---|
1787 | * @param pVCpu Pointer to the VMCPU.
|
---|
1788 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1789 | *
|
---|
1790 | * @remarks No-long-jump zone!!!
|
---|
1791 | */
|
---|
1792 | static int hmR0SvmLoadGuestState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
1793 | {
|
---|
1794 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
1795 | AssertMsgReturn(pVmcb, ("Invalid pVmcb\n"), VERR_SVM_INVALID_PVMCB);
|
---|
1796 |
|
---|
1797 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestState, x);
|
---|
1798 |
|
---|
1799 | int rc = hmR0SvmLoadGuestControlRegs(pVCpu, pVmcb, pCtx);
|
---|
1800 | AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestControlRegs! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
|
---|
1801 |
|
---|
1802 | hmR0SvmLoadGuestSegmentRegs(pVCpu, pVmcb, pCtx);
|
---|
1803 | hmR0SvmLoadGuestMsrs(pVCpu, pVmcb, pCtx);
|
---|
1804 |
|
---|
1805 | pVmcb->guest.u64RIP = pCtx->rip;
|
---|
1806 | pVmcb->guest.u64RSP = pCtx->rsp;
|
---|
1807 | pVmcb->guest.u64RFlags = pCtx->eflags.u32;
|
---|
1808 | pVmcb->guest.u64RAX = pCtx->rax;
|
---|
1809 |
|
---|
1810 | rc = hmR0SvmLoadGuestApicState(pVCpu, pVmcb, pCtx);
|
---|
1811 | AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestApicState! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
|
---|
1812 |
|
---|
1813 | rc = hmR0SvmSetupVMRunHandler(pVCpu, pCtx);
|
---|
1814 | AssertLogRelMsgRCReturn(rc, ("hmR0SvmSetupVMRunHandler! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
|
---|
1815 |
|
---|
1816 | /* Clear any unused and reserved bits. */
|
---|
1817 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_RIP /* Unused (loaded unconditionally). */
|
---|
1818 | | HM_CHANGED_GUEST_RSP
|
---|
1819 | | HM_CHANGED_GUEST_RFLAGS
|
---|
1820 | | HM_CHANGED_GUEST_SYSENTER_CS_MSR
|
---|
1821 | | HM_CHANGED_GUEST_SYSENTER_EIP_MSR
|
---|
1822 | | HM_CHANGED_GUEST_SYSENTER_ESP_MSR
|
---|
1823 | | HM_CHANGED_GUEST_LAZY_MSRS /* Unused. */
|
---|
1824 | | HM_CHANGED_SVM_RESERVED1 /* Reserved. */
|
---|
1825 | | HM_CHANGED_SVM_RESERVED2
|
---|
1826 | | HM_CHANGED_SVM_RESERVED3
|
---|
1827 | | HM_CHANGED_SVM_RESERVED4);
|
---|
1828 |
|
---|
1829 | /* All the guest state bits should be loaded except maybe the host context and/or shared host/guest bits. */
|
---|
1830 | AssertMsg( !HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_ALL_GUEST)
|
---|
1831 | || HMCPU_CF_IS_PENDING_ONLY(pVCpu, HM_CHANGED_HOST_CONTEXT | HM_CHANGED_HOST_GUEST_SHARED_STATE),
|
---|
1832 | ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
|
---|
1833 |
|
---|
1834 | Log4(("Load: CS:RIP=%04x:%RX64 EFL=%#x SS:RSP=%04x:%RX64\n", pCtx->cs.Sel, pCtx->rip, pCtx->eflags.u, pCtx->ss, pCtx->rsp));
|
---|
1835 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestState, x);
|
---|
1836 | return rc;
|
---|
1837 | }
|
---|
1838 |
|
---|
1839 |
|
---|
1840 | /**
|
---|
1841 | * Loads the state shared between the host and guest into the
|
---|
1842 | * VMCB.
|
---|
1843 | *
|
---|
1844 | * @param pVCpu Pointer to the VMCPU.
|
---|
1845 | * @param pVmcb Pointer to the VM control block.
|
---|
1846 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1847 | *
|
---|
1848 | * @remarks No-long-jump zone!!!
|
---|
1849 | */
|
---|
1850 | static void hmR0SvmLoadSharedState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1851 | {
|
---|
1852 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
1853 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
1854 |
|
---|
1855 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0))
|
---|
1856 | hmR0SvmLoadSharedCR0(pVCpu, pVmcb, pCtx);
|
---|
1857 |
|
---|
1858 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_DEBUG))
|
---|
1859 | hmR0SvmLoadSharedDebugState(pVCpu, pVmcb, pCtx);
|
---|
1860 |
|
---|
1861 | /* Unused on AMD-V. */
|
---|
1862 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_LAZY_MSRS);
|
---|
1863 |
|
---|
1864 | AssertMsg(!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE),
|
---|
1865 | ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
|
---|
1866 | }
|
---|
1867 |
|
---|
1868 |
|
---|
1869 | /**
|
---|
1870 | * Saves the entire guest state from the VMCB into the
|
---|
1871 | * guest-CPU context. Currently there is no residual state left in the CPU that
|
---|
1872 | * is not updated in the VMCB.
|
---|
1873 | *
|
---|
1874 | * @returns VBox status code.
|
---|
1875 | * @param pVCpu Pointer to the VMCPU.
|
---|
1876 | * @param pMixedCtx Pointer to the guest-CPU context. The data may be
|
---|
1877 | * out-of-sync. Make sure to update the required fields
|
---|
1878 | * before using them.
|
---|
1879 | */
|
---|
1880 | static void hmR0SvmSaveGuestState(PVMCPU pVCpu, PCPUMCTX pMixedCtx)
|
---|
1881 | {
|
---|
1882 | Assert(VMMRZCallRing3IsEnabled(pVCpu));
|
---|
1883 |
|
---|
1884 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
1885 |
|
---|
1886 | pMixedCtx->rip = pVmcb->guest.u64RIP;
|
---|
1887 | pMixedCtx->rsp = pVmcb->guest.u64RSP;
|
---|
1888 | pMixedCtx->eflags.u32 = pVmcb->guest.u64RFlags;
|
---|
1889 | pMixedCtx->rax = pVmcb->guest.u64RAX;
|
---|
1890 |
|
---|
1891 | /*
|
---|
1892 | * Guest interrupt shadow.
|
---|
1893 | */
|
---|
1894 | if (pVmcb->ctrl.u64IntShadow & SVM_INTERRUPT_SHADOW_ACTIVE)
|
---|
1895 | EMSetInhibitInterruptsPC(pVCpu, pMixedCtx->rip);
|
---|
1896 | else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
|
---|
1897 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
|
---|
1898 |
|
---|
1899 | /*
|
---|
1900 | * Guest Control registers: CR2, CR3 (handled at the end) - accesses to other control registers are always intercepted.
|
---|
1901 | */
|
---|
1902 | pMixedCtx->cr2 = pVmcb->guest.u64CR2;
|
---|
1903 |
|
---|
1904 | /*
|
---|
1905 | * Guest MSRs.
|
---|
1906 | */
|
---|
1907 | pMixedCtx->msrSTAR = pVmcb->guest.u64STAR; /* legacy syscall eip, cs & ss */
|
---|
1908 | pMixedCtx->msrLSTAR = pVmcb->guest.u64LSTAR; /* 64-bit mode syscall rip */
|
---|
1909 | pMixedCtx->msrCSTAR = pVmcb->guest.u64CSTAR; /* compatibility mode syscall rip */
|
---|
1910 | pMixedCtx->msrSFMASK = pVmcb->guest.u64SFMASK; /* syscall flag mask */
|
---|
1911 | pMixedCtx->msrKERNELGSBASE = pVmcb->guest.u64KernelGSBase; /* swapgs exchange value */
|
---|
1912 | pMixedCtx->SysEnter.cs = pVmcb->guest.u64SysEnterCS;
|
---|
1913 | pMixedCtx->SysEnter.eip = pVmcb->guest.u64SysEnterEIP;
|
---|
1914 | pMixedCtx->SysEnter.esp = pVmcb->guest.u64SysEnterESP;
|
---|
1915 |
|
---|
1916 | /*
|
---|
1917 | * Guest segment registers (includes FS, GS base MSRs for 64-bit guests).
|
---|
1918 | */
|
---|
1919 | HMSVM_SAVE_SEG_REG(CS, cs);
|
---|
1920 | HMSVM_SAVE_SEG_REG(SS, ss);
|
---|
1921 | HMSVM_SAVE_SEG_REG(DS, ds);
|
---|
1922 | HMSVM_SAVE_SEG_REG(ES, es);
|
---|
1923 | HMSVM_SAVE_SEG_REG(FS, fs);
|
---|
1924 | HMSVM_SAVE_SEG_REG(GS, gs);
|
---|
1925 |
|
---|
1926 | /*
|
---|
1927 | * Correct the hidden CS granularity bit. Haven't seen it being wrong in any other
|
---|
1928 | * register (yet).
|
---|
1929 | */
|
---|
1930 | /** @todo SELM might need to be fixed as it too should not care about the
|
---|
1931 | * granularity bit. See @bugref{6785}. */
|
---|
1932 | if ( !pMixedCtx->cs.Attr.n.u1Granularity
|
---|
1933 | && pMixedCtx->cs.Attr.n.u1Present
|
---|
1934 | && pMixedCtx->cs.u32Limit > UINT32_C(0xfffff))
|
---|
1935 | {
|
---|
1936 | Assert((pMixedCtx->cs.u32Limit & 0xfff) == 0xfff);
|
---|
1937 | pMixedCtx->cs.Attr.n.u1Granularity = 1;
|
---|
1938 | }
|
---|
1939 |
|
---|
1940 | #ifdef VBOX_STRICT
|
---|
1941 | # define HMSVM_ASSERT_SEG_GRANULARITY(reg) \
|
---|
1942 | AssertMsg( !pMixedCtx->reg.Attr.n.u1Present \
|
---|
1943 | || ( pMixedCtx->reg.Attr.n.u1Granularity \
|
---|
1944 | ? (pMixedCtx->reg.u32Limit & 0xfff) == 0xfff \
|
---|
1945 | : pMixedCtx->reg.u32Limit <= UINT32_C(0xfffff)), \
|
---|
1946 | ("Invalid Segment Attributes Limit=%#RX32 Attr=%#RX32 Base=%#RX64\n", pMixedCtx->reg.u32Limit, \
|
---|
1947 | pMixedCtx->reg.Attr.u, pMixedCtx->reg.u64Base))
|
---|
1948 |
|
---|
1949 | HMSVM_ASSERT_SEG_GRANULARITY(cs);
|
---|
1950 | HMSVM_ASSERT_SEG_GRANULARITY(ss);
|
---|
1951 | HMSVM_ASSERT_SEG_GRANULARITY(ds);
|
---|
1952 | HMSVM_ASSERT_SEG_GRANULARITY(es);
|
---|
1953 | HMSVM_ASSERT_SEG_GRANULARITY(fs);
|
---|
1954 | HMSVM_ASSERT_SEG_GRANULARITY(gs);
|
---|
1955 |
|
---|
1956 | # undef HMSVM_ASSERT_SEL_GRANULARITY
|
---|
1957 | #endif
|
---|
1958 |
|
---|
1959 | /*
|
---|
1960 | * Sync the hidden SS DPL field. AMD CPUs have a separate CPL field in the VMCB and uses that
|
---|
1961 | * and thus it's possible that when the CPL changes during guest execution that the SS DPL
|
---|
1962 | * isn't updated by AMD-V. Observed on some AMD Fusion CPUs with 64-bit guests.
|
---|
1963 | * See AMD spec. 15.5.1 "Basic operation".
|
---|
1964 | */
|
---|
1965 | Assert(!(pVmcb->guest.u8CPL & ~0x3));
|
---|
1966 | pMixedCtx->ss.Attr.n.u2Dpl = pVmcb->guest.u8CPL & 0x3;
|
---|
1967 |
|
---|
1968 | /*
|
---|
1969 | * Guest TR.
|
---|
1970 | * Fixup TR attributes so it's compatible with Intel. Important when saved-states are used
|
---|
1971 | * between Intel and AMD. See @bugref{6208} comment #39.
|
---|
1972 | */
|
---|
1973 | HMSVM_SAVE_SEG_REG(TR, tr);
|
---|
1974 | if (CPUMIsGuestInLongModeEx(pMixedCtx))
|
---|
1975 | pMixedCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_386_TSS_BUSY;
|
---|
1976 |
|
---|
1977 | /*
|
---|
1978 | * Guest Descriptor-Table registers.
|
---|
1979 | */
|
---|
1980 | HMSVM_SAVE_SEG_REG(LDTR, ldtr);
|
---|
1981 | pMixedCtx->gdtr.cbGdt = pVmcb->guest.GDTR.u32Limit;
|
---|
1982 | pMixedCtx->gdtr.pGdt = pVmcb->guest.GDTR.u64Base;
|
---|
1983 |
|
---|
1984 | pMixedCtx->idtr.cbIdt = pVmcb->guest.IDTR.u32Limit;
|
---|
1985 | pMixedCtx->idtr.pIdt = pVmcb->guest.IDTR.u64Base;
|
---|
1986 |
|
---|
1987 | /*
|
---|
1988 | * Guest Debug registers.
|
---|
1989 | */
|
---|
1990 | if (!pVCpu->hm.s.fUsingHyperDR7)
|
---|
1991 | {
|
---|
1992 | pMixedCtx->dr[6] = pVmcb->guest.u64DR6;
|
---|
1993 | pMixedCtx->dr[7] = pVmcb->guest.u64DR7;
|
---|
1994 | }
|
---|
1995 | else
|
---|
1996 | {
|
---|
1997 | Assert(pVmcb->guest.u64DR7 == CPUMGetHyperDR7(pVCpu));
|
---|
1998 | CPUMSetHyperDR6(pVCpu, pVmcb->guest.u64DR6);
|
---|
1999 | }
|
---|
2000 |
|
---|
2001 | /*
|
---|
2002 | * With Nested Paging, CR3 changes are not intercepted. Therefore, sync. it now.
|
---|
2003 | * This is done as the very last step of syncing the guest state, as PGMUpdateCR3() may cause longjmp's to ring-3.
|
---|
2004 | */
|
---|
2005 | if ( pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging
|
---|
2006 | && pMixedCtx->cr3 != pVmcb->guest.u64CR3)
|
---|
2007 | {
|
---|
2008 | CPUMSetGuestCR3(pVCpu, pVmcb->guest.u64CR3);
|
---|
2009 | PGMUpdateCR3(pVCpu, pVmcb->guest.u64CR3);
|
---|
2010 | }
|
---|
2011 | }
|
---|
2012 |
|
---|
2013 |
|
---|
2014 | /**
|
---|
2015 | * Does the necessary state syncing before returning to ring-3 for any reason
|
---|
2016 | * (longjmp, preemption, voluntary exits to ring-3) from AMD-V.
|
---|
2017 | *
|
---|
2018 | * @param pVM Pointer to the VM.
|
---|
2019 | * @param pVCpu Pointer to the VMCPU.
|
---|
2020 | * @param pMixedCtx Pointer to the guest-CPU context.
|
---|
2021 | *
|
---|
2022 | * @remarks No-long-jmp zone!!!
|
---|
2023 | */
|
---|
2024 | static void hmR0SvmLeave(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2025 | {
|
---|
2026 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
2027 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2028 | Assert(VMMR0IsLogFlushDisabled(pVCpu));
|
---|
2029 |
|
---|
2030 | /*
|
---|
2031 | * !!! IMPORTANT !!!
|
---|
2032 | * If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
|
---|
2033 | */
|
---|
2034 |
|
---|
2035 | /* Restore host FPU state if necessary and resync on next R0 reentry .*/
|
---|
2036 | if (CPUMIsGuestFPUStateActive(pVCpu))
|
---|
2037 | {
|
---|
2038 | CPUMR0SaveGuestFPU(pVM, pVCpu, pCtx);
|
---|
2039 | Assert(!CPUMIsGuestFPUStateActive(pVCpu));
|
---|
2040 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
2041 | }
|
---|
2042 |
|
---|
2043 | /*
|
---|
2044 | * Restore host debug registers if necessary and resync on next R0 reentry.
|
---|
2045 | */
|
---|
2046 | #ifdef VBOX_STRICT
|
---|
2047 | if (CPUMIsHyperDebugStateActive(pVCpu))
|
---|
2048 | {
|
---|
2049 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
2050 | Assert(pVmcb->ctrl.u16InterceptRdDRx == 0xffff);
|
---|
2051 | Assert(pVmcb->ctrl.u16InterceptWrDRx == 0xffff);
|
---|
2052 | }
|
---|
2053 | #endif
|
---|
2054 | if (CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */))
|
---|
2055 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);
|
---|
2056 |
|
---|
2057 | Assert(!CPUMIsHyperDebugStateActive(pVCpu));
|
---|
2058 | Assert(!CPUMIsGuestDebugStateActive(pVCpu));
|
---|
2059 |
|
---|
2060 | STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatEntry);
|
---|
2061 | STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatLoadGuestState);
|
---|
2062 | STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit1);
|
---|
2063 | STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit2);
|
---|
2064 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
|
---|
2065 |
|
---|
2066 | VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_HM, VMCPUSTATE_STARTED_EXEC);
|
---|
2067 | }
|
---|
2068 |
|
---|
2069 |
|
---|
2070 | /**
|
---|
2071 | * Leaves the AMD-V session.
|
---|
2072 | *
|
---|
2073 | * @returns VBox status code.
|
---|
2074 | * @param pVM Pointer to the VM.
|
---|
2075 | * @param pVCpu Pointer to the VMCPU.
|
---|
2076 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2077 | */
|
---|
2078 | static int hmR0SvmLeaveSession(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2079 | {
|
---|
2080 | HM_DISABLE_PREEMPT_IF_NEEDED();
|
---|
2081 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2082 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
2083 |
|
---|
2084 | /* When thread-context hooks are used, we can avoid doing the leave again if we had been preempted before
|
---|
2085 | and done this from the SVMR0ThreadCtxCallback(). */
|
---|
2086 | if (!pVCpu->hm.s.fLeaveDone)
|
---|
2087 | {
|
---|
2088 | hmR0SvmLeave(pVM, pVCpu, pCtx);
|
---|
2089 | pVCpu->hm.s.fLeaveDone = true;
|
---|
2090 | }
|
---|
2091 |
|
---|
2092 | /*
|
---|
2093 | * !!! IMPORTANT !!!
|
---|
2094 | * If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
|
---|
2095 | */
|
---|
2096 |
|
---|
2097 | /* Deregister hook now that we've left HM context before re-enabling preemption. */
|
---|
2098 | if (VMMR0ThreadCtxHooksAreRegistered(pVCpu))
|
---|
2099 | VMMR0ThreadCtxHooksDeregister(pVCpu);
|
---|
2100 |
|
---|
2101 | /* Leave HM context. This takes care of local init (term). */
|
---|
2102 | int rc = HMR0LeaveCpu(pVCpu);
|
---|
2103 |
|
---|
2104 | HM_RESTORE_PREEMPT_IF_NEEDED();
|
---|
2105 | return rc;
|
---|
2106 | }
|
---|
2107 |
|
---|
2108 |
|
---|
2109 | /**
|
---|
2110 | * Does the necessary state syncing before doing a longjmp to ring-3.
|
---|
2111 | *
|
---|
2112 | * @returns VBox status code.
|
---|
2113 | * @param pVM Pointer to the VM.
|
---|
2114 | * @param pVCpu Pointer to the VMCPU.
|
---|
2115 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2116 | *
|
---|
2117 | * @remarks No-long-jmp zone!!!
|
---|
2118 | */
|
---|
2119 | static int hmR0SvmLongJmpToRing3(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2120 | {
|
---|
2121 | return hmR0SvmLeaveSession(pVM, pVCpu, pCtx);
|
---|
2122 | }
|
---|
2123 |
|
---|
2124 |
|
---|
2125 | /**
|
---|
2126 | * VMMRZCallRing3() callback wrapper which saves the guest state (or restores
|
---|
2127 | * any remaining host state) before we longjump to ring-3 and possibly get
|
---|
2128 | * preempted.
|
---|
2129 | *
|
---|
2130 | * @param pVCpu Pointer to the VMCPU.
|
---|
2131 | * @param enmOperation The operation causing the ring-3 longjump.
|
---|
2132 | * @param pvUser The user argument (pointer to the possibly
|
---|
2133 | * out-of-date guest-CPU context).
|
---|
2134 | */
|
---|
2135 | DECLCALLBACK(int) hmR0SvmCallRing3Callback(PVMCPU pVCpu, VMMCALLRING3 enmOperation, void *pvUser)
|
---|
2136 | {
|
---|
2137 | if (enmOperation == VMMCALLRING3_VM_R0_ASSERTION)
|
---|
2138 | {
|
---|
2139 | /*
|
---|
2140 | * !!! IMPORTANT !!!
|
---|
2141 | * If you modify code here, make sure to check whether hmR0SvmLeave() and hmR0SvmLeaveSession() needs
|
---|
2142 | * to be updated too. This is a stripped down version which gets out ASAP trying to not trigger any assertion.
|
---|
2143 | */
|
---|
2144 | VMMRZCallRing3RemoveNotification(pVCpu);
|
---|
2145 | VMMRZCallRing3Disable(pVCpu);
|
---|
2146 | HM_DISABLE_PREEMPT_IF_NEEDED();
|
---|
2147 |
|
---|
2148 | /* Restore host FPU state if necessary and resync on next R0 reentry .*/
|
---|
2149 | if (CPUMIsGuestFPUStateActive(pVCpu))
|
---|
2150 | CPUMR0SaveGuestFPU(pVCpu->CTX_SUFF(pVM), pVCpu, (PCPUMCTX)pvUser);
|
---|
2151 |
|
---|
2152 | /* Restore host debug registers if necessary and resync on next R0 reentry. */
|
---|
2153 | CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */);
|
---|
2154 |
|
---|
2155 | /* Deregister hook now that we've left HM context before re-enabling preemption. */
|
---|
2156 | if (VMMR0ThreadCtxHooksAreRegistered(pVCpu))
|
---|
2157 | VMMR0ThreadCtxHooksDeregister(pVCpu);
|
---|
2158 |
|
---|
2159 | /* Leave HM context. This takes care of local init (term). */
|
---|
2160 | HMR0LeaveCpu(pVCpu);
|
---|
2161 |
|
---|
2162 | HM_RESTORE_PREEMPT_IF_NEEDED();
|
---|
2163 | return VINF_SUCCESS;
|
---|
2164 | }
|
---|
2165 |
|
---|
2166 | Assert(pVCpu);
|
---|
2167 | Assert(pvUser);
|
---|
2168 | Assert(VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2169 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
2170 |
|
---|
2171 | VMMRZCallRing3Disable(pVCpu);
|
---|
2172 | Assert(VMMR0IsLogFlushDisabled(pVCpu));
|
---|
2173 |
|
---|
2174 | Log4(("hmR0SvmCallRing3Callback->hmR0SvmLongJmpToRing3\n"));
|
---|
2175 | int rc = hmR0SvmLongJmpToRing3(pVCpu->CTX_SUFF(pVM), pVCpu, (PCPUMCTX)pvUser);
|
---|
2176 | AssertRCReturn(rc, rc);
|
---|
2177 |
|
---|
2178 | VMMRZCallRing3Enable(pVCpu);
|
---|
2179 | return VINF_SUCCESS;
|
---|
2180 | }
|
---|
2181 |
|
---|
2182 |
|
---|
2183 | /**
|
---|
2184 | * Take necessary actions before going back to ring-3.
|
---|
2185 | *
|
---|
2186 | * An action requires us to go back to ring-3. This function does the necessary
|
---|
2187 | * steps before we can safely return to ring-3. This is not the same as longjmps
|
---|
2188 | * to ring-3, this is voluntary.
|
---|
2189 | *
|
---|
2190 | * @param pVM Pointer to the VM.
|
---|
2191 | * @param pVCpu Pointer to the VMCPU.
|
---|
2192 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2193 | * @param rcExit The reason for exiting to ring-3. Can be
|
---|
2194 | * VINF_VMM_UNKNOWN_RING3_CALL.
|
---|
2195 | */
|
---|
2196 | static void hmR0SvmExitToRing3(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, int rcExit)
|
---|
2197 | {
|
---|
2198 | Assert(pVM);
|
---|
2199 | Assert(pVCpu);
|
---|
2200 | Assert(pCtx);
|
---|
2201 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
2202 |
|
---|
2203 | /* Please, no longjumps here (any logging shouldn't flush jump back to ring-3). NO LOGGING BEFORE THIS POINT! */
|
---|
2204 | VMMRZCallRing3Disable(pVCpu);
|
---|
2205 | Log4(("hmR0SvmExitToRing3: rcExit=%d\n", rcExit));
|
---|
2206 |
|
---|
2207 | /* We need to do this only while truly exiting the "inner loop" back to ring-3 and -not- for any longjmp to ring3. */
|
---|
2208 | if (pVCpu->hm.s.Event.fPending)
|
---|
2209 | {
|
---|
2210 | hmR0SvmPendingEventToTrpmTrap(pVCpu);
|
---|
2211 | Assert(!pVCpu->hm.s.Event.fPending);
|
---|
2212 | }
|
---|
2213 |
|
---|
2214 | /* If we're emulating an instruction, we shouldn't have any TRPM traps pending
|
---|
2215 | and if we're injecting an event we should have a TRPM trap pending. */
|
---|
2216 | Assert(rcExit != VINF_EM_RAW_INJECT_TRPM_EVENT || TRPMHasTrap(pVCpu));
|
---|
2217 | Assert(rcExit != VINF_EM_RAW_EMULATE_INSTR || !TRPMHasTrap(pVCpu));
|
---|
2218 |
|
---|
2219 | /* Sync. the necessary state for going back to ring-3. */
|
---|
2220 | hmR0SvmLeaveSession(pVM, pVCpu, pCtx);
|
---|
2221 | STAM_COUNTER_DEC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
|
---|
2222 |
|
---|
2223 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
|
---|
2224 | CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_SYSENTER_MSR
|
---|
2225 | | CPUM_CHANGED_LDTR
|
---|
2226 | | CPUM_CHANGED_GDTR
|
---|
2227 | | CPUM_CHANGED_IDTR
|
---|
2228 | | CPUM_CHANGED_TR
|
---|
2229 | | CPUM_CHANGED_HIDDEN_SEL_REGS);
|
---|
2230 | if ( pVM->hm.s.fNestedPaging
|
---|
2231 | && CPUMIsGuestPagingEnabledEx(pCtx))
|
---|
2232 | {
|
---|
2233 | CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_GLOBAL_TLB_FLUSH);
|
---|
2234 | }
|
---|
2235 |
|
---|
2236 | /* On our way back from ring-3 reload the guest state if there is a possibility of it being changed. */
|
---|
2237 | if (rcExit != VINF_EM_RAW_INTERRUPT)
|
---|
2238 | HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
|
---|
2239 |
|
---|
2240 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchExitToR3);
|
---|
2241 |
|
---|
2242 | /* We do -not- want any longjmp notifications after this! We must return to ring-3 ASAP. */
|
---|
2243 | VMMRZCallRing3RemoveNotification(pVCpu);
|
---|
2244 | VMMRZCallRing3Enable(pVCpu);
|
---|
2245 | }
|
---|
2246 |
|
---|
2247 |
|
---|
2248 | /**
|
---|
2249 | * Updates the use of TSC offsetting mode for the CPU and adjusts the necessary
|
---|
2250 | * intercepts.
|
---|
2251 | *
|
---|
2252 | * @param pVCpu Pointer to the VMCPU.
|
---|
2253 | *
|
---|
2254 | * @remarks No-long-jump zone!!!
|
---|
2255 | */
|
---|
2256 | static void hmR0SvmUpdateTscOffsetting(PVMCPU pVCpu)
|
---|
2257 | {
|
---|
2258 | bool fParavirtTsc = false;
|
---|
2259 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
2260 | if (TMCpuTickCanUseRealTSC(pVCpu, &pVmcb->ctrl.u64TSCOffset, &fParavirtTsc))
|
---|
2261 | {
|
---|
2262 | uint64_t u64CurTSC = ASMReadTSC();
|
---|
2263 | uint64_t u64LastTick = TMCpuTickGetLastSeen(pVCpu);
|
---|
2264 | if (fParavirtTsc)
|
---|
2265 | {
|
---|
2266 | #if 0
|
---|
2267 | if (u64CurTSC + pVmcb->ctrl.u64TSCOffset > u64LastTick)
|
---|
2268 | {
|
---|
2269 | pVmcb->ctrl.u64TSCOffset = u64LastTick - u64CurTSC;
|
---|
2270 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffsetAdjusted);
|
---|
2271 | }
|
---|
2272 | int rc = GIMR0UpdateParavirtTsc(pVCpu->CTX_SUFF(pVM), pVmcb->ctrl.u64TSCOffset);
|
---|
2273 | AssertRC(rc);
|
---|
2274 | #endif
|
---|
2275 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscParavirt);
|
---|
2276 | }
|
---|
2277 |
|
---|
2278 | if (u64CurTSC + pVmcb->ctrl.u64TSCOffset >= TMCpuTickGetLastSeen(pVCpu))
|
---|
2279 | {
|
---|
2280 | pVmcb->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_RDTSC;
|
---|
2281 | pVmcb->ctrl.u32InterceptCtrl2 &= ~SVM_CTRL2_INTERCEPT_RDTSCP;
|
---|
2282 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
|
---|
2283 | }
|
---|
2284 | else
|
---|
2285 | {
|
---|
2286 | pVmcb->ctrl.u32InterceptCtrl1 |= SVM_CTRL1_INTERCEPT_RDTSC;
|
---|
2287 | pVmcb->ctrl.u32InterceptCtrl2 |= SVM_CTRL2_INTERCEPT_RDTSCP;
|
---|
2288 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscInterceptOverFlow);
|
---|
2289 | }
|
---|
2290 | }
|
---|
2291 | else
|
---|
2292 | {
|
---|
2293 | Assert(!fParavirtTsc);
|
---|
2294 | pVmcb->ctrl.u32InterceptCtrl1 |= SVM_CTRL1_INTERCEPT_RDTSC;
|
---|
2295 | pVmcb->ctrl.u32InterceptCtrl2 |= SVM_CTRL2_INTERCEPT_RDTSCP;
|
---|
2296 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
|
---|
2297 | }
|
---|
2298 |
|
---|
2299 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
2300 | }
|
---|
2301 |
|
---|
2302 |
|
---|
2303 | /**
|
---|
2304 | * Sets an event as a pending event to be injected into the guest.
|
---|
2305 | *
|
---|
2306 | * @param pVCpu Pointer to the VMCPU.
|
---|
2307 | * @param pEvent Pointer to the SVM event.
|
---|
2308 | * @param GCPtrFaultAddress The fault-address (CR2) in case it's a
|
---|
2309 | * page-fault.
|
---|
2310 | *
|
---|
2311 | * @remarks Statistics counter assumes this is a guest event being reflected to
|
---|
2312 | * the guest i.e. 'StatInjectPendingReflect' is incremented always.
|
---|
2313 | */
|
---|
2314 | DECLINLINE(void) hmR0SvmSetPendingEvent(PVMCPU pVCpu, PSVMEVENT pEvent, RTGCUINTPTR GCPtrFaultAddress)
|
---|
2315 | {
|
---|
2316 | Assert(!pVCpu->hm.s.Event.fPending);
|
---|
2317 | Assert(pEvent->n.u1Valid);
|
---|
2318 |
|
---|
2319 | pVCpu->hm.s.Event.u64IntInfo = pEvent->u;
|
---|
2320 | pVCpu->hm.s.Event.fPending = true;
|
---|
2321 | pVCpu->hm.s.Event.GCPtrFaultAddress = GCPtrFaultAddress;
|
---|
2322 |
|
---|
2323 | Log4(("hmR0SvmSetPendingEvent: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
|
---|
2324 | pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
|
---|
2325 |
|
---|
2326 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
|
---|
2327 | }
|
---|
2328 |
|
---|
2329 |
|
---|
2330 | /**
|
---|
2331 | * Injects an event into the guest upon VMRUN by updating the relevant field
|
---|
2332 | * in the VMCB.
|
---|
2333 | *
|
---|
2334 | * @param pVCpu Pointer to the VMCPU.
|
---|
2335 | * @param pVmcb Pointer to the guest VM control block.
|
---|
2336 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2337 | * @param pEvent Pointer to the event.
|
---|
2338 | *
|
---|
2339 | * @remarks No-long-jump zone!!!
|
---|
2340 | * @remarks Requires CR0!
|
---|
2341 | */
|
---|
2342 | DECLINLINE(void) hmR0SvmInjectEventVmcb(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx, PSVMEVENT pEvent)
|
---|
2343 | {
|
---|
2344 | NOREF(pVCpu); NOREF(pCtx);
|
---|
2345 |
|
---|
2346 | pVmcb->ctrl.EventInject.u = pEvent->u;
|
---|
2347 | STAM_COUNTER_INC(&pVCpu->hm.s.paStatInjectedIrqsR0[pEvent->n.u8Vector & MASK_INJECT_IRQ_STAT]);
|
---|
2348 |
|
---|
2349 | Log4(("hmR0SvmInjectEventVmcb: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
|
---|
2350 | pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
|
---|
2351 | }
|
---|
2352 |
|
---|
2353 |
|
---|
2354 |
|
---|
2355 | /**
|
---|
2356 | * Converts any TRPM trap into a pending HM event. This is typically used when
|
---|
2357 | * entering from ring-3 (not longjmp returns).
|
---|
2358 | *
|
---|
2359 | * @param pVCpu Pointer to the VMCPU.
|
---|
2360 | */
|
---|
2361 | static void hmR0SvmTrpmTrapToPendingEvent(PVMCPU pVCpu)
|
---|
2362 | {
|
---|
2363 | Assert(TRPMHasTrap(pVCpu));
|
---|
2364 | Assert(!pVCpu->hm.s.Event.fPending);
|
---|
2365 |
|
---|
2366 | uint8_t uVector;
|
---|
2367 | TRPMEVENT enmTrpmEvent;
|
---|
2368 | RTGCUINT uErrCode;
|
---|
2369 | RTGCUINTPTR GCPtrFaultAddress;
|
---|
2370 | uint8_t cbInstr;
|
---|
2371 |
|
---|
2372 | int rc = TRPMQueryTrapAll(pVCpu, &uVector, &enmTrpmEvent, &uErrCode, &GCPtrFaultAddress, &cbInstr);
|
---|
2373 | AssertRC(rc);
|
---|
2374 |
|
---|
2375 | SVMEVENT Event;
|
---|
2376 | Event.u = 0;
|
---|
2377 | Event.n.u1Valid = 1;
|
---|
2378 | Event.n.u8Vector = uVector;
|
---|
2379 |
|
---|
2380 | /* Refer AMD spec. 15.20 "Event Injection" for the format. */
|
---|
2381 | if (enmTrpmEvent == TRPM_TRAP)
|
---|
2382 | {
|
---|
2383 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
2384 | switch (uVector)
|
---|
2385 | {
|
---|
2386 | case X86_XCPT_NMI:
|
---|
2387 | {
|
---|
2388 | Event.n.u3Type = SVM_EVENT_NMI;
|
---|
2389 | break;
|
---|
2390 | }
|
---|
2391 |
|
---|
2392 | case X86_XCPT_PF:
|
---|
2393 | case X86_XCPT_DF:
|
---|
2394 | case X86_XCPT_TS:
|
---|
2395 | case X86_XCPT_NP:
|
---|
2396 | case X86_XCPT_SS:
|
---|
2397 | case X86_XCPT_GP:
|
---|
2398 | case X86_XCPT_AC:
|
---|
2399 | {
|
---|
2400 | Event.n.u1ErrorCodeValid = 1;
|
---|
2401 | Event.n.u32ErrorCode = uErrCode;
|
---|
2402 | break;
|
---|
2403 | }
|
---|
2404 | }
|
---|
2405 | }
|
---|
2406 | else if (enmTrpmEvent == TRPM_HARDWARE_INT)
|
---|
2407 | Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
|
---|
2408 | else if (enmTrpmEvent == TRPM_SOFTWARE_INT)
|
---|
2409 | Event.n.u3Type = SVM_EVENT_SOFTWARE_INT;
|
---|
2410 | else
|
---|
2411 | AssertMsgFailed(("Invalid TRPM event type %d\n", enmTrpmEvent));
|
---|
2412 |
|
---|
2413 | rc = TRPMResetTrap(pVCpu);
|
---|
2414 | AssertRC(rc);
|
---|
2415 |
|
---|
2416 | Log4(("TRPM->HM event: u=%#RX64 u8Vector=%#x uErrorCodeValid=%RTbool uErrorCode=%#RX32\n", Event.u, Event.n.u8Vector,
|
---|
2417 | !!Event.n.u1ErrorCodeValid, Event.n.u32ErrorCode));
|
---|
2418 |
|
---|
2419 | hmR0SvmSetPendingEvent(pVCpu, &Event, GCPtrFaultAddress);
|
---|
2420 | STAM_COUNTER_DEC(&pVCpu->hm.s.StatInjectPendingReflect);
|
---|
2421 | }
|
---|
2422 |
|
---|
2423 |
|
---|
2424 | /**
|
---|
2425 | * Converts any pending SVM event into a TRPM trap. Typically used when leaving
|
---|
2426 | * AMD-V to execute any instruction.
|
---|
2427 | *
|
---|
2428 | * @param pvCpu Pointer to the VMCPU.
|
---|
2429 | */
|
---|
2430 | static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu)
|
---|
2431 | {
|
---|
2432 | Assert(pVCpu->hm.s.Event.fPending);
|
---|
2433 | Assert(TRPMQueryTrap(pVCpu, NULL /* pu8TrapNo */, NULL /* pEnmType */) == VERR_TRPM_NO_ACTIVE_TRAP);
|
---|
2434 |
|
---|
2435 | SVMEVENT Event;
|
---|
2436 | Event.u = pVCpu->hm.s.Event.u64IntInfo;
|
---|
2437 |
|
---|
2438 | uint8_t uVector = Event.n.u8Vector;
|
---|
2439 | uint8_t uVectorType = Event.n.u3Type;
|
---|
2440 |
|
---|
2441 | TRPMEVENT enmTrapType;
|
---|
2442 | switch (uVectorType)
|
---|
2443 | {
|
---|
2444 | case SVM_EVENT_EXTERNAL_IRQ:
|
---|
2445 | enmTrapType = TRPM_HARDWARE_INT;
|
---|
2446 | break;
|
---|
2447 | case SVM_EVENT_SOFTWARE_INT:
|
---|
2448 | enmTrapType = TRPM_SOFTWARE_INT;
|
---|
2449 | break;
|
---|
2450 | case SVM_EVENT_EXCEPTION:
|
---|
2451 | case SVM_EVENT_NMI:
|
---|
2452 | enmTrapType = TRPM_TRAP;
|
---|
2453 | break;
|
---|
2454 | default:
|
---|
2455 | AssertMsgFailed(("Invalid pending-event type %#x\n", uVectorType));
|
---|
2456 | enmTrapType = TRPM_32BIT_HACK;
|
---|
2457 | break;
|
---|
2458 | }
|
---|
2459 |
|
---|
2460 | Log4(("HM event->TRPM: uVector=%#x enmTrapType=%d\n", uVector, uVectorType));
|
---|
2461 |
|
---|
2462 | int rc = TRPMAssertTrap(pVCpu, uVector, enmTrapType);
|
---|
2463 | AssertRC(rc);
|
---|
2464 |
|
---|
2465 | if (Event.n.u1ErrorCodeValid)
|
---|
2466 | TRPMSetErrorCode(pVCpu, Event.n.u32ErrorCode);
|
---|
2467 |
|
---|
2468 | if ( uVectorType == SVM_EVENT_EXCEPTION
|
---|
2469 | && uVector == X86_XCPT_PF)
|
---|
2470 | {
|
---|
2471 | TRPMSetFaultAddress(pVCpu, pVCpu->hm.s.Event.GCPtrFaultAddress);
|
---|
2472 | Assert(pVCpu->hm.s.Event.GCPtrFaultAddress == CPUMGetGuestCR2(pVCpu));
|
---|
2473 | }
|
---|
2474 | else if (uVectorType == SVM_EVENT_SOFTWARE_INT)
|
---|
2475 | {
|
---|
2476 | AssertMsg( uVectorType == SVM_EVENT_SOFTWARE_INT
|
---|
2477 | || (uVector == X86_XCPT_BP || uVector == X86_XCPT_OF),
|
---|
2478 | ("Invalid vector: uVector=%#x uVectorType=%#x\n", uVector, uVectorType));
|
---|
2479 | TRPMSetInstrLength(pVCpu, pVCpu->hm.s.Event.cbInstr);
|
---|
2480 | }
|
---|
2481 | pVCpu->hm.s.Event.fPending = false;
|
---|
2482 | }
|
---|
2483 |
|
---|
2484 |
|
---|
2485 | /**
|
---|
2486 | * Gets the guest's interrupt-shadow.
|
---|
2487 | *
|
---|
2488 | * @returns The guest's interrupt-shadow.
|
---|
2489 | * @param pVCpu Pointer to the VMCPU.
|
---|
2490 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2491 | *
|
---|
2492 | * @remarks No-long-jump zone!!!
|
---|
2493 | * @remarks Has side-effects with VMCPU_FF_INHIBIT_INTERRUPTS force-flag.
|
---|
2494 | */
|
---|
2495 | DECLINLINE(uint32_t) hmR0SvmGetGuestIntrShadow(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2496 | {
|
---|
2497 | /*
|
---|
2498 | * Instructions like STI and MOV SS inhibit interrupts till the next instruction completes. Check if we should
|
---|
2499 | * inhibit interrupts or clear any existing interrupt-inhibition.
|
---|
2500 | */
|
---|
2501 | uint32_t uIntrState = 0;
|
---|
2502 | if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
|
---|
2503 | {
|
---|
2504 | if (pCtx->rip != EMGetInhibitInterruptsPC(pVCpu))
|
---|
2505 | {
|
---|
2506 | /*
|
---|
2507 | * We can clear the inhibit force flag as even if we go back to the recompiler without executing guest code in
|
---|
2508 | * AMD-V, the flag's condition to be cleared is met and thus the cleared state is correct.
|
---|
2509 | */
|
---|
2510 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
|
---|
2511 | }
|
---|
2512 | else
|
---|
2513 | uIntrState = SVM_INTERRUPT_SHADOW_ACTIVE;
|
---|
2514 | }
|
---|
2515 | return uIntrState;
|
---|
2516 | }
|
---|
2517 |
|
---|
2518 |
|
---|
2519 | /**
|
---|
2520 | * Sets the virtual interrupt intercept control in the VMCB which
|
---|
2521 | * instructs AMD-V to cause a #VMEXIT as soon as the guest is in a state to
|
---|
2522 | * receive interrupts.
|
---|
2523 | *
|
---|
2524 | * @param pVmcb Pointer to the VM control block.
|
---|
2525 | */
|
---|
2526 | DECLINLINE(void) hmR0SvmSetVirtIntrIntercept(PSVMVMCB pVmcb)
|
---|
2527 | {
|
---|
2528 | if (!(pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_VINTR))
|
---|
2529 | {
|
---|
2530 | pVmcb->ctrl.IntCtrl.n.u1VIrqValid = 1; /* A virtual interrupt is pending. */
|
---|
2531 | pVmcb->ctrl.IntCtrl.n.u8VIrqVector = 0; /* Not necessary as we #VMEXIT for delivering the interrupt. */
|
---|
2532 | pVmcb->ctrl.u32InterceptCtrl1 |= SVM_CTRL1_INTERCEPT_VINTR;
|
---|
2533 | pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS | HMSVM_VMCB_CLEAN_TPR);
|
---|
2534 |
|
---|
2535 | Log4(("Setting VINTR intercept\n"));
|
---|
2536 | }
|
---|
2537 | }
|
---|
2538 |
|
---|
2539 |
|
---|
2540 | /**
|
---|
2541 | * Sets the IRET intercept control in the VMCB which instructs AMD-V to cause a
|
---|
2542 | * #VMEXIT as soon as a guest starts executing an IRET. This is used to unblock
|
---|
2543 | * virtual NMIs.
|
---|
2544 | *
|
---|
2545 | * @param pVmcb Pointer to the VM control block.
|
---|
2546 | */
|
---|
2547 | DECLINLINE(void) hmR0SvmSetIretIntercept(PSVMVMCB pVmcb)
|
---|
2548 | {
|
---|
2549 | if (!(pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_IRET))
|
---|
2550 | {
|
---|
2551 | pVmcb->ctrl.u32InterceptCtrl1 |= SVM_CTRL1_INTERCEPT_IRET;
|
---|
2552 | pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS);
|
---|
2553 |
|
---|
2554 | Log4(("Setting IRET intercept\n"));
|
---|
2555 | }
|
---|
2556 | }
|
---|
2557 |
|
---|
2558 |
|
---|
2559 | /**
|
---|
2560 | * Clears the IRET intercept control in the VMCB.
|
---|
2561 | *
|
---|
2562 | * @param pVmcb Pointer to the VM control block.
|
---|
2563 | */
|
---|
2564 | DECLINLINE(void) hmR0SvmClearIretIntercept(PSVMVMCB pVmcb)
|
---|
2565 | {
|
---|
2566 | if (pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_IRET)
|
---|
2567 | {
|
---|
2568 | pVmcb->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_IRET;
|
---|
2569 | pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS);
|
---|
2570 |
|
---|
2571 | Log4(("Clearing IRET intercept\n"));
|
---|
2572 | }
|
---|
2573 | }
|
---|
2574 |
|
---|
2575 |
|
---|
2576 | /**
|
---|
2577 | * Evaluates the event to be delivered to the guest and sets it as the pending
|
---|
2578 | * event.
|
---|
2579 | *
|
---|
2580 | * @param pVCpu Pointer to the VMCPU.
|
---|
2581 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2582 | */
|
---|
2583 | static void hmR0SvmEvaluatePendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2584 | {
|
---|
2585 | Assert(!pVCpu->hm.s.Event.fPending);
|
---|
2586 | Log4Func(("\n"));
|
---|
2587 |
|
---|
2588 | bool const fIntShadow = RT_BOOL(hmR0SvmGetGuestIntrShadow(pVCpu, pCtx));
|
---|
2589 | bool const fBlockInt = !(pCtx->eflags.u32 & X86_EFL_IF);
|
---|
2590 | bool const fBlockNmi = RT_BOOL(VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS));
|
---|
2591 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
2592 |
|
---|
2593 | SVMEVENT Event;
|
---|
2594 | Event.u = 0;
|
---|
2595 | /** @todo SMI. SMIs take priority over NMIs. */
|
---|
2596 | if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)) /* NMI. NMIs take priority over regular interrupts . */
|
---|
2597 | {
|
---|
2598 | if (fBlockNmi)
|
---|
2599 | hmR0SvmSetIretIntercept(pVmcb);
|
---|
2600 | else if (fIntShadow)
|
---|
2601 | hmR0SvmSetVirtIntrIntercept(pVmcb);
|
---|
2602 | else
|
---|
2603 | {
|
---|
2604 | Log4(("Pending NMI\n"));
|
---|
2605 |
|
---|
2606 | Event.n.u1Valid = 1;
|
---|
2607 | Event.n.u8Vector = X86_XCPT_NMI;
|
---|
2608 | Event.n.u3Type = SVM_EVENT_NMI;
|
---|
2609 |
|
---|
2610 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
2611 | hmR0SvmSetIretIntercept(pVmcb);
|
---|
2612 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
|
---|
2613 | }
|
---|
2614 | }
|
---|
2615 | else if (VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC)))
|
---|
2616 | {
|
---|
2617 | /*
|
---|
2618 | * Check if the guest can receive external interrupts (PIC/APIC). Once we do PDMGetInterrupt() we -must- deliver
|
---|
2619 | * the interrupt ASAP. We must not execute any guest code until we inject the interrupt which is why it is
|
---|
2620 | * evaluated here and not set as pending, solely based on the force-flags.
|
---|
2621 | */
|
---|
2622 | if ( !fBlockInt
|
---|
2623 | && !fIntShadow)
|
---|
2624 | {
|
---|
2625 | uint8_t u8Interrupt;
|
---|
2626 | int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
|
---|
2627 | if (RT_SUCCESS(rc))
|
---|
2628 | {
|
---|
2629 | Log4(("Injecting external interrupt u8Interrupt=%#x\n", u8Interrupt));
|
---|
2630 |
|
---|
2631 | Event.n.u1Valid = 1;
|
---|
2632 | Event.n.u8Vector = u8Interrupt;
|
---|
2633 | Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
|
---|
2634 |
|
---|
2635 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
2636 | }
|
---|
2637 | else
|
---|
2638 | {
|
---|
2639 | /** @todo Does this actually happen? If not turn it into an assertion. */
|
---|
2640 | Assert(!VMCPU_FF_IS_PENDING(pVCpu, (VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC)));
|
---|
2641 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
|
---|
2642 | }
|
---|
2643 | }
|
---|
2644 | else
|
---|
2645 | hmR0SvmSetVirtIntrIntercept(pVmcb);
|
---|
2646 | }
|
---|
2647 | }
|
---|
2648 |
|
---|
2649 |
|
---|
2650 | /**
|
---|
2651 | * Injects any pending events into the guest if the guest is in a state to
|
---|
2652 | * receive them.
|
---|
2653 | *
|
---|
2654 | * @param pVCpu Pointer to the VMCPU.
|
---|
2655 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2656 | */
|
---|
2657 | static void hmR0SvmInjectPendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2658 | {
|
---|
2659 | Assert(!TRPMHasTrap(pVCpu));
|
---|
2660 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2661 | Log4Func(("\n"));
|
---|
2662 |
|
---|
2663 | bool const fIntShadow = RT_BOOL(hmR0SvmGetGuestIntrShadow(pVCpu, pCtx));
|
---|
2664 | bool const fBlockInt = !(pCtx->eflags.u32 & X86_EFL_IF);
|
---|
2665 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
2666 |
|
---|
2667 | if (pVCpu->hm.s.Event.fPending) /* First, inject any pending HM events. */
|
---|
2668 | {
|
---|
2669 | SVMEVENT Event;
|
---|
2670 | Event.u = pVCpu->hm.s.Event.u64IntInfo;
|
---|
2671 | Assert(Event.n.u1Valid);
|
---|
2672 | #ifdef VBOX_STRICT
|
---|
2673 | if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
|
---|
2674 | {
|
---|
2675 | Assert(!fBlockInt);
|
---|
2676 | Assert(!fIntShadow);
|
---|
2677 | }
|
---|
2678 | else if (Event.n.u3Type == SVM_EVENT_NMI)
|
---|
2679 | Assert(!fIntShadow);
|
---|
2680 | #endif
|
---|
2681 |
|
---|
2682 | Log4(("Injecting pending HM event.\n"));
|
---|
2683 | hmR0SvmInjectEventVmcb(pVCpu, pVmcb, pCtx, &Event);
|
---|
2684 | pVCpu->hm.s.Event.fPending = false;
|
---|
2685 |
|
---|
2686 | #ifdef VBOX_WITH_STATISTICS
|
---|
2687 | if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
|
---|
2688 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectInterrupt);
|
---|
2689 | else
|
---|
2690 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectXcpt);
|
---|
2691 | #endif
|
---|
2692 | }
|
---|
2693 |
|
---|
2694 | /* Update the guest interrupt shadow in the VMCB. */
|
---|
2695 | pVmcb->ctrl.u64IntShadow = !!fIntShadow;
|
---|
2696 | NOREF(fBlockInt);
|
---|
2697 | }
|
---|
2698 |
|
---|
2699 |
|
---|
2700 | /**
|
---|
2701 | * Reports world-switch error and dumps some useful debug info.
|
---|
2702 | *
|
---|
2703 | * @param pVM Pointer to the VM.
|
---|
2704 | * @param pVCpu Pointer to the VMCPU.
|
---|
2705 | * @param rcVMRun The return code from VMRUN (or
|
---|
2706 | * VERR_SVM_INVALID_GUEST_STATE for invalid
|
---|
2707 | * guest-state).
|
---|
2708 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2709 | */
|
---|
2710 | static void hmR0SvmReportWorldSwitchError(PVM pVM, PVMCPU pVCpu, int rcVMRun, PCPUMCTX pCtx)
|
---|
2711 | {
|
---|
2712 | NOREF(pCtx);
|
---|
2713 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
2714 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
2715 |
|
---|
2716 | if (rcVMRun == VERR_SVM_INVALID_GUEST_STATE)
|
---|
2717 | {
|
---|
2718 | HMDumpRegs(pVM, pVCpu, pCtx); NOREF(pVM);
|
---|
2719 | #ifdef VBOX_STRICT
|
---|
2720 | Log4(("ctrl.u64VmcbCleanBits %#RX64\n", pVmcb->ctrl.u64VmcbCleanBits));
|
---|
2721 | Log4(("ctrl.u16InterceptRdCRx %#x\n", pVmcb->ctrl.u16InterceptRdCRx));
|
---|
2722 | Log4(("ctrl.u16InterceptWrCRx %#x\n", pVmcb->ctrl.u16InterceptWrCRx));
|
---|
2723 | Log4(("ctrl.u16InterceptRdDRx %#x\n", pVmcb->ctrl.u16InterceptRdDRx));
|
---|
2724 | Log4(("ctrl.u16InterceptWrDRx %#x\n", pVmcb->ctrl.u16InterceptWrDRx));
|
---|
2725 | Log4(("ctrl.u32InterceptException %#x\n", pVmcb->ctrl.u32InterceptException));
|
---|
2726 | Log4(("ctrl.u32InterceptCtrl1 %#x\n", pVmcb->ctrl.u32InterceptCtrl1));
|
---|
2727 | Log4(("ctrl.u32InterceptCtrl2 %#x\n", pVmcb->ctrl.u32InterceptCtrl2));
|
---|
2728 | Log4(("ctrl.u64IOPMPhysAddr %#RX64\n", pVmcb->ctrl.u64IOPMPhysAddr));
|
---|
2729 | Log4(("ctrl.u64MSRPMPhysAddr %#RX64\n", pVmcb->ctrl.u64MSRPMPhysAddr));
|
---|
2730 | Log4(("ctrl.u64TSCOffset %#RX64\n", pVmcb->ctrl.u64TSCOffset));
|
---|
2731 |
|
---|
2732 | Log4(("ctrl.TLBCtrl.u32ASID %#x\n", pVmcb->ctrl.TLBCtrl.n.u32ASID));
|
---|
2733 | Log4(("ctrl.TLBCtrl.u8TLBFlush %#x\n", pVmcb->ctrl.TLBCtrl.n.u8TLBFlush));
|
---|
2734 | Log4(("ctrl.TLBCtrl.u24Reserved %#x\n", pVmcb->ctrl.TLBCtrl.n.u24Reserved));
|
---|
2735 |
|
---|
2736 | Log4(("ctrl.IntCtrl.u8VTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u8VTPR));
|
---|
2737 | Log4(("ctrl.IntCtrl.u1VIrqValid %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIrqValid));
|
---|
2738 | Log4(("ctrl.IntCtrl.u7Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u7Reserved));
|
---|
2739 | Log4(("ctrl.IntCtrl.u4VIrqPriority %#x\n", pVmcb->ctrl.IntCtrl.n.u4VIrqPriority));
|
---|
2740 | Log4(("ctrl.IntCtrl.u1IgnoreTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR));
|
---|
2741 | Log4(("ctrl.IntCtrl.u3Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u3Reserved));
|
---|
2742 | Log4(("ctrl.IntCtrl.u1VIrqMasking %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIrqMasking));
|
---|
2743 | Log4(("ctrl.IntCtrl.u6Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u6Reserved));
|
---|
2744 | Log4(("ctrl.IntCtrl.u8VIrqVector %#x\n", pVmcb->ctrl.IntCtrl.n.u8VIrqVector));
|
---|
2745 | Log4(("ctrl.IntCtrl.u24Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u24Reserved));
|
---|
2746 |
|
---|
2747 | Log4(("ctrl.u64IntShadow %#RX64\n", pVmcb->ctrl.u64IntShadow));
|
---|
2748 | Log4(("ctrl.u64ExitCode %#RX64\n", pVmcb->ctrl.u64ExitCode));
|
---|
2749 | Log4(("ctrl.u64ExitInfo1 %#RX64\n", pVmcb->ctrl.u64ExitInfo1));
|
---|
2750 | Log4(("ctrl.u64ExitInfo2 %#RX64\n", pVmcb->ctrl.u64ExitInfo2));
|
---|
2751 | Log4(("ctrl.ExitIntInfo.u8Vector %#x\n", pVmcb->ctrl.ExitIntInfo.n.u8Vector));
|
---|
2752 | Log4(("ctrl.ExitIntInfo.u3Type %#x\n", pVmcb->ctrl.ExitIntInfo.n.u3Type));
|
---|
2753 | Log4(("ctrl.ExitIntInfo.u1ErrorCodeValid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
|
---|
2754 | Log4(("ctrl.ExitIntInfo.u19Reserved %#x\n", pVmcb->ctrl.ExitIntInfo.n.u19Reserved));
|
---|
2755 | Log4(("ctrl.ExitIntInfo.u1Valid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1Valid));
|
---|
2756 | Log4(("ctrl.ExitIntInfo.u32ErrorCode %#x\n", pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
|
---|
2757 | Log4(("ctrl.NestedPaging %#RX64\n", pVmcb->ctrl.NestedPaging.u));
|
---|
2758 | Log4(("ctrl.EventInject.u8Vector %#x\n", pVmcb->ctrl.EventInject.n.u8Vector));
|
---|
2759 | Log4(("ctrl.EventInject.u3Type %#x\n", pVmcb->ctrl.EventInject.n.u3Type));
|
---|
2760 | Log4(("ctrl.EventInject.u1ErrorCodeValid %#x\n", pVmcb->ctrl.EventInject.n.u1ErrorCodeValid));
|
---|
2761 | Log4(("ctrl.EventInject.u19Reserved %#x\n", pVmcb->ctrl.EventInject.n.u19Reserved));
|
---|
2762 | Log4(("ctrl.EventInject.u1Valid %#x\n", pVmcb->ctrl.EventInject.n.u1Valid));
|
---|
2763 | Log4(("ctrl.EventInject.u32ErrorCode %#x\n", pVmcb->ctrl.EventInject.n.u32ErrorCode));
|
---|
2764 |
|
---|
2765 | Log4(("ctrl.u64NestedPagingCR3 %#RX64\n", pVmcb->ctrl.u64NestedPagingCR3));
|
---|
2766 | Log4(("ctrl.u64LBRVirt %#RX64\n", pVmcb->ctrl.u64LBRVirt));
|
---|
2767 |
|
---|
2768 | Log4(("guest.CS.u16Sel %RTsel\n", pVmcb->guest.CS.u16Sel));
|
---|
2769 | Log4(("guest.CS.u16Attr %#x\n", pVmcb->guest.CS.u16Attr));
|
---|
2770 | Log4(("guest.CS.u32Limit %#RX32\n", pVmcb->guest.CS.u32Limit));
|
---|
2771 | Log4(("guest.CS.u64Base %#RX64\n", pVmcb->guest.CS.u64Base));
|
---|
2772 | Log4(("guest.DS.u16Sel %#RTsel\n", pVmcb->guest.DS.u16Sel));
|
---|
2773 | Log4(("guest.DS.u16Attr %#x\n", pVmcb->guest.DS.u16Attr));
|
---|
2774 | Log4(("guest.DS.u32Limit %#RX32\n", pVmcb->guest.DS.u32Limit));
|
---|
2775 | Log4(("guest.DS.u64Base %#RX64\n", pVmcb->guest.DS.u64Base));
|
---|
2776 | Log4(("guest.ES.u16Sel %RTsel\n", pVmcb->guest.ES.u16Sel));
|
---|
2777 | Log4(("guest.ES.u16Attr %#x\n", pVmcb->guest.ES.u16Attr));
|
---|
2778 | Log4(("guest.ES.u32Limit %#RX32\n", pVmcb->guest.ES.u32Limit));
|
---|
2779 | Log4(("guest.ES.u64Base %#RX64\n", pVmcb->guest.ES.u64Base));
|
---|
2780 | Log4(("guest.FS.u16Sel %RTsel\n", pVmcb->guest.FS.u16Sel));
|
---|
2781 | Log4(("guest.FS.u16Attr %#x\n", pVmcb->guest.FS.u16Attr));
|
---|
2782 | Log4(("guest.FS.u32Limit %#RX32\n", pVmcb->guest.FS.u32Limit));
|
---|
2783 | Log4(("guest.FS.u64Base %#RX64\n", pVmcb->guest.FS.u64Base));
|
---|
2784 | Log4(("guest.GS.u16Sel %RTsel\n", pVmcb->guest.GS.u16Sel));
|
---|
2785 | Log4(("guest.GS.u16Attr %#x\n", pVmcb->guest.GS.u16Attr));
|
---|
2786 | Log4(("guest.GS.u32Limit %#RX32\n", pVmcb->guest.GS.u32Limit));
|
---|
2787 | Log4(("guest.GS.u64Base %#RX64\n", pVmcb->guest.GS.u64Base));
|
---|
2788 |
|
---|
2789 | Log4(("guest.GDTR.u32Limit %#RX32\n", pVmcb->guest.GDTR.u32Limit));
|
---|
2790 | Log4(("guest.GDTR.u64Base %#RX64\n", pVmcb->guest.GDTR.u64Base));
|
---|
2791 |
|
---|
2792 | Log4(("guest.LDTR.u16Sel %RTsel\n", pVmcb->guest.LDTR.u16Sel));
|
---|
2793 | Log4(("guest.LDTR.u16Attr %#x\n", pVmcb->guest.LDTR.u16Attr));
|
---|
2794 | Log4(("guest.LDTR.u32Limit %#RX32\n", pVmcb->guest.LDTR.u32Limit));
|
---|
2795 | Log4(("guest.LDTR.u64Base %#RX64\n", pVmcb->guest.LDTR.u64Base));
|
---|
2796 |
|
---|
2797 | Log4(("guest.IDTR.u32Limit %#RX32\n", pVmcb->guest.IDTR.u32Limit));
|
---|
2798 | Log4(("guest.IDTR.u64Base %#RX64\n", pVmcb->guest.IDTR.u64Base));
|
---|
2799 |
|
---|
2800 | Log4(("guest.TR.u16Sel %RTsel\n", pVmcb->guest.TR.u16Sel));
|
---|
2801 | Log4(("guest.TR.u16Attr %#x\n", pVmcb->guest.TR.u16Attr));
|
---|
2802 | Log4(("guest.TR.u32Limit %#RX32\n", pVmcb->guest.TR.u32Limit));
|
---|
2803 | Log4(("guest.TR.u64Base %#RX64\n", pVmcb->guest.TR.u64Base));
|
---|
2804 |
|
---|
2805 | Log4(("guest.u8CPL %#x\n", pVmcb->guest.u8CPL));
|
---|
2806 | Log4(("guest.u64CR0 %#RX64\n", pVmcb->guest.u64CR0));
|
---|
2807 | Log4(("guest.u64CR2 %#RX64\n", pVmcb->guest.u64CR2));
|
---|
2808 | Log4(("guest.u64CR3 %#RX64\n", pVmcb->guest.u64CR3));
|
---|
2809 | Log4(("guest.u64CR4 %#RX64\n", pVmcb->guest.u64CR4));
|
---|
2810 | Log4(("guest.u64DR6 %#RX64\n", pVmcb->guest.u64DR6));
|
---|
2811 | Log4(("guest.u64DR7 %#RX64\n", pVmcb->guest.u64DR7));
|
---|
2812 |
|
---|
2813 | Log4(("guest.u64RIP %#RX64\n", pVmcb->guest.u64RIP));
|
---|
2814 | Log4(("guest.u64RSP %#RX64\n", pVmcb->guest.u64RSP));
|
---|
2815 | Log4(("guest.u64RAX %#RX64\n", pVmcb->guest.u64RAX));
|
---|
2816 | Log4(("guest.u64RFlags %#RX64\n", pVmcb->guest.u64RFlags));
|
---|
2817 |
|
---|
2818 | Log4(("guest.u64SysEnterCS %#RX64\n", pVmcb->guest.u64SysEnterCS));
|
---|
2819 | Log4(("guest.u64SysEnterEIP %#RX64\n", pVmcb->guest.u64SysEnterEIP));
|
---|
2820 | Log4(("guest.u64SysEnterESP %#RX64\n", pVmcb->guest.u64SysEnterESP));
|
---|
2821 |
|
---|
2822 | Log4(("guest.u64EFER %#RX64\n", pVmcb->guest.u64EFER));
|
---|
2823 | Log4(("guest.u64STAR %#RX64\n", pVmcb->guest.u64STAR));
|
---|
2824 | Log4(("guest.u64LSTAR %#RX64\n", pVmcb->guest.u64LSTAR));
|
---|
2825 | Log4(("guest.u64CSTAR %#RX64\n", pVmcb->guest.u64CSTAR));
|
---|
2826 | Log4(("guest.u64SFMASK %#RX64\n", pVmcb->guest.u64SFMASK));
|
---|
2827 | Log4(("guest.u64KernelGSBase %#RX64\n", pVmcb->guest.u64KernelGSBase));
|
---|
2828 | Log4(("guest.u64GPAT %#RX64\n", pVmcb->guest.u64GPAT));
|
---|
2829 | Log4(("guest.u64DBGCTL %#RX64\n", pVmcb->guest.u64DBGCTL));
|
---|
2830 | Log4(("guest.u64BR_FROM %#RX64\n", pVmcb->guest.u64BR_FROM));
|
---|
2831 | Log4(("guest.u64BR_TO %#RX64\n", pVmcb->guest.u64BR_TO));
|
---|
2832 | Log4(("guest.u64LASTEXCPFROM %#RX64\n", pVmcb->guest.u64LASTEXCPFROM));
|
---|
2833 | Log4(("guest.u64LASTEXCPTO %#RX64\n", pVmcb->guest.u64LASTEXCPTO));
|
---|
2834 | #else
|
---|
2835 | NOREF(pVmcb);
|
---|
2836 | #endif /* VBOX_STRICT */
|
---|
2837 | }
|
---|
2838 | else
|
---|
2839 | Log4(("hmR0SvmReportWorldSwitchError: rcVMRun=%d\n", rcVMRun));
|
---|
2840 | }
|
---|
2841 |
|
---|
2842 |
|
---|
2843 | /**
|
---|
2844 | * Check per-VM and per-VCPU force flag actions that require us to go back to
|
---|
2845 | * ring-3 for one reason or another.
|
---|
2846 | *
|
---|
2847 | * @returns VBox status code (information status code included).
|
---|
2848 | * @retval VINF_SUCCESS if we don't have any actions that require going back to
|
---|
2849 | * ring-3.
|
---|
2850 | * @retval VINF_PGM_SYNC_CR3 if we have pending PGM CR3 sync.
|
---|
2851 | * @retval VINF_EM_PENDING_REQUEST if we have pending requests (like hardware
|
---|
2852 | * interrupts)
|
---|
2853 | * @retval VINF_PGM_POOL_FLUSH_PENDING if PGM is doing a pool flush and requires
|
---|
2854 | * all EMTs to be in ring-3.
|
---|
2855 | * @retval VINF_EM_RAW_TO_R3 if there is pending DMA requests.
|
---|
2856 | * @retval VINF_EM_NO_MEMORY PGM is out of memory, we need to return
|
---|
2857 | * to the EM loop.
|
---|
2858 | *
|
---|
2859 | * @param pVM Pointer to the VM.
|
---|
2860 | * @param pVCpu Pointer to the VMCPU.
|
---|
2861 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2862 | */
|
---|
2863 | static int hmR0SvmCheckForceFlags(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2864 | {
|
---|
2865 | Assert(VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2866 |
|
---|
2867 | /* On AMD-V we don't need to update CR3, PAE PDPES lazily. See hmR0SvmSaveGuestState(). */
|
---|
2868 | Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_CR3));
|
---|
2869 | Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES));
|
---|
2870 |
|
---|
2871 | if ( VM_FF_IS_PENDING(pVM, !pVCpu->hm.s.fSingleInstruction
|
---|
2872 | ? VM_FF_HP_R0_PRE_HM_MASK : VM_FF_HP_R0_PRE_HM_STEP_MASK)
|
---|
2873 | || VMCPU_FF_IS_PENDING(pVCpu, !pVCpu->hm.s.fSingleInstruction
|
---|
2874 | ? VMCPU_FF_HP_R0_PRE_HM_MASK : VMCPU_FF_HP_R0_PRE_HM_STEP_MASK) )
|
---|
2875 | {
|
---|
2876 | /* Pending PGM C3 sync. */
|
---|
2877 | if (VMCPU_FF_IS_PENDING(pVCpu,VMCPU_FF_PGM_SYNC_CR3 | VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
|
---|
2878 | {
|
---|
2879 | int rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
|
---|
2880 | if (rc != VINF_SUCCESS)
|
---|
2881 | {
|
---|
2882 | Log4(("hmR0SvmCheckForceFlags: PGMSyncCR3 forcing us back to ring-3. rc=%d\n", rc));
|
---|
2883 | return rc;
|
---|
2884 | }
|
---|
2885 | }
|
---|
2886 |
|
---|
2887 | /* Pending HM-to-R3 operations (critsects, timers, EMT rendezvous etc.) */
|
---|
2888 | /* -XXX- what was that about single stepping? */
|
---|
2889 | if ( VM_FF_IS_PENDING(pVM, VM_FF_HM_TO_R3_MASK)
|
---|
2890 | || VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
|
---|
2891 | {
|
---|
2892 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
|
---|
2893 | int rc = RT_UNLIKELY(VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY)) ? VINF_EM_NO_MEMORY : VINF_EM_RAW_TO_R3;
|
---|
2894 | Log4(("hmR0SvmCheckForceFlags: HM_TO_R3 forcing us back to ring-3. rc=%d\n", rc));
|
---|
2895 | return rc;
|
---|
2896 | }
|
---|
2897 |
|
---|
2898 | /* Pending VM request packets, such as hardware interrupts. */
|
---|
2899 | if ( VM_FF_IS_PENDING(pVM, VM_FF_REQUEST)
|
---|
2900 | || VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_REQUEST))
|
---|
2901 | {
|
---|
2902 | Log4(("hmR0SvmCheckForceFlags: Pending VM request forcing us back to ring-3\n"));
|
---|
2903 | return VINF_EM_PENDING_REQUEST;
|
---|
2904 | }
|
---|
2905 |
|
---|
2906 | /* Pending PGM pool flushes. */
|
---|
2907 | if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_POOL_FLUSH_PENDING))
|
---|
2908 | {
|
---|
2909 | Log4(("hmR0SvmCheckForceFlags: PGM pool flush pending forcing us back to ring-3\n"));
|
---|
2910 | return VINF_PGM_POOL_FLUSH_PENDING;
|
---|
2911 | }
|
---|
2912 |
|
---|
2913 | /* Pending DMA requests. */
|
---|
2914 | if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
|
---|
2915 | {
|
---|
2916 | Log4(("hmR0SvmCheckForceFlags: Pending DMA request forcing us back to ring-3\n"));
|
---|
2917 | return VINF_EM_RAW_TO_R3;
|
---|
2918 | }
|
---|
2919 | }
|
---|
2920 |
|
---|
2921 | return VINF_SUCCESS;
|
---|
2922 | }
|
---|
2923 |
|
---|
2924 |
|
---|
2925 | /**
|
---|
2926 | * Does the preparations before executing guest code in AMD-V.
|
---|
2927 | *
|
---|
2928 | * This may cause longjmps to ring-3 and may even result in rescheduling to the
|
---|
2929 | * recompiler. We must be cautious what we do here regarding committing
|
---|
2930 | * guest-state information into the the VMCB assuming we assuredly execute the
|
---|
2931 | * guest in AMD-V. If we fall back to the recompiler after updating the VMCB and
|
---|
2932 | * clearing the common-state (TRPM/forceflags), we must undo those changes so
|
---|
2933 | * that the recompiler can (and should) use them when it resumes guest
|
---|
2934 | * execution. Otherwise such operations must be done when we can no longer
|
---|
2935 | * exit to ring-3.
|
---|
2936 | *
|
---|
2937 | * @returns VBox status code (informational status codes included).
|
---|
2938 | * @retval VINF_SUCCESS if we can proceed with running the guest.
|
---|
2939 | * @retval VINF_* scheduling changes, we have to go back to ring-3.
|
---|
2940 | *
|
---|
2941 | * @param pVM Pointer to the VM.
|
---|
2942 | * @param pVCpu Pointer to the VMCPU.
|
---|
2943 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2944 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
2945 | */
|
---|
2946 | static int hmR0SvmPreRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
2947 | {
|
---|
2948 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
2949 |
|
---|
2950 | /* Check force flag actions that might require us to go back to ring-3. */
|
---|
2951 | int rc = hmR0SvmCheckForceFlags(pVM, pVCpu, pCtx);
|
---|
2952 | if (rc != VINF_SUCCESS)
|
---|
2953 | return rc;
|
---|
2954 |
|
---|
2955 | if (TRPMHasTrap(pVCpu))
|
---|
2956 | hmR0SvmTrpmTrapToPendingEvent(pVCpu);
|
---|
2957 | else if (!pVCpu->hm.s.Event.fPending)
|
---|
2958 | hmR0SvmEvaluatePendingEvent(pVCpu, pCtx);
|
---|
2959 |
|
---|
2960 | #ifdef HMSVM_SYNC_FULL_GUEST_STATE
|
---|
2961 | HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
|
---|
2962 | #endif
|
---|
2963 |
|
---|
2964 | /* Load the guest bits that are not shared with the host in any way since we can longjmp or get preempted. */
|
---|
2965 | rc = hmR0SvmLoadGuestState(pVM, pVCpu, pCtx);
|
---|
2966 | AssertRCReturn(rc, rc);
|
---|
2967 | STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadFull);
|
---|
2968 |
|
---|
2969 | /*
|
---|
2970 | * If we're not intercepting TPR changes in the guest, save the guest TPR before the world-switch
|
---|
2971 | * so we can update it on the way back if the guest changed the TPR.
|
---|
2972 | */
|
---|
2973 | if (pVCpu->hm.s.svm.fSyncVTpr)
|
---|
2974 | {
|
---|
2975 | if (pVM->hm.s.fTPRPatchingActive)
|
---|
2976 | pSvmTransient->u8GuestTpr = pCtx->msrLSTAR;
|
---|
2977 | else
|
---|
2978 | {
|
---|
2979 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
2980 | pSvmTransient->u8GuestTpr = pVmcb->ctrl.IntCtrl.n.u8VTPR;
|
---|
2981 | }
|
---|
2982 | }
|
---|
2983 |
|
---|
2984 | /*
|
---|
2985 | * No longjmps to ring-3 from this point on!!!
|
---|
2986 | * Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
|
---|
2987 | * This also disables flushing of the R0-logger instance (if any).
|
---|
2988 | */
|
---|
2989 | VMMRZCallRing3Disable(pVCpu);
|
---|
2990 |
|
---|
2991 | /*
|
---|
2992 | * We disable interrupts so that we don't miss any interrupts that would flag preemption (IPI/timers etc.)
|
---|
2993 | * when thread-context hooks aren't used and we've been running with preemption disabled for a while.
|
---|
2994 | *
|
---|
2995 | * We need to check for force-flags that could've possible been altered since we last checked them (e.g.
|
---|
2996 | * by PDMGetInterrupt() leaving the PDM critical section, see @bugref{6398}).
|
---|
2997 | *
|
---|
2998 | * We also check a couple of other force-flags as a last opportunity to get the EMT back to ring-3 before
|
---|
2999 | * executing guest code.
|
---|
3000 | */
|
---|
3001 | pSvmTransient->uEflags = ASMIntDisableFlags();
|
---|
3002 | if ( VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS | VM_FF_TM_VIRTUAL_SYNC)
|
---|
3003 | || VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
|
---|
3004 | {
|
---|
3005 | ASMSetFlags(pSvmTransient->uEflags);
|
---|
3006 | VMMRZCallRing3Enable(pVCpu);
|
---|
3007 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
|
---|
3008 | return VINF_EM_RAW_TO_R3;
|
---|
3009 | }
|
---|
3010 | if (RTThreadPreemptIsPending(NIL_RTTHREAD))
|
---|
3011 | {
|
---|
3012 | ASMSetFlags(pSvmTransient->uEflags);
|
---|
3013 | VMMRZCallRing3Enable(pVCpu);
|
---|
3014 | STAM_COUNTER_INC(&pVCpu->hm.s.StatPendingHostIrq);
|
---|
3015 | return VINF_EM_RAW_INTERRUPT;
|
---|
3016 | }
|
---|
3017 |
|
---|
3018 | /*
|
---|
3019 | * If we are injecting an NMI, we must set VMCPU_FF_BLOCK_NMIS only when we are going to execute
|
---|
3020 | * guest code for certain (no exits to ring-3). Otherwise, we could re-read the flag on re-entry into
|
---|
3021 | * AMD-V and conclude that NMI inhibition is active when we have not even delivered the NMI.
|
---|
3022 | *
|
---|
3023 | * With VT-x, this is handled by the Guest interruptibility information VMCS field which will set the
|
---|
3024 | * VMCS field after actually delivering the NMI which we read on VM-exit to determine the state.
|
---|
3025 | */
|
---|
3026 | if (pVCpu->hm.s.Event.fPending)
|
---|
3027 | {
|
---|
3028 | SVMEVENT Event;
|
---|
3029 | Event.u = pVCpu->hm.s.Event.u64IntInfo;
|
---|
3030 | if ( Event.n.u1Valid
|
---|
3031 | && Event.n.u3Type == SVM_EVENT_NMI
|
---|
3032 | && Event.n.u8Vector == X86_XCPT_NMI
|
---|
3033 | && !VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
|
---|
3034 | {
|
---|
3035 | VMCPU_FF_SET(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
3036 | }
|
---|
3037 | }
|
---|
3038 |
|
---|
3039 | return VINF_SUCCESS;
|
---|
3040 | }
|
---|
3041 |
|
---|
3042 |
|
---|
3043 | /**
|
---|
3044 | * Prepares to run guest code in AMD-V and we've committed to doing so. This
|
---|
3045 | * means there is no backing out to ring-3 or anywhere else at this
|
---|
3046 | * point.
|
---|
3047 | *
|
---|
3048 | * @param pVM Pointer to the VM.
|
---|
3049 | * @param pVCpu Pointer to the VMCPU.
|
---|
3050 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3051 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
3052 | *
|
---|
3053 | * @remarks Called with preemption disabled.
|
---|
3054 | * @remarks No-long-jump zone!!!
|
---|
3055 | */
|
---|
3056 | static void hmR0SvmPreRunGuestCommitted(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
3057 | {
|
---|
3058 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
3059 | Assert(VMMR0IsLogFlushDisabled(pVCpu));
|
---|
3060 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
3061 |
|
---|
3062 | VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
|
---|
3063 | VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC); /* Indicate the start of guest execution. */
|
---|
3064 |
|
---|
3065 | hmR0SvmInjectPendingEvent(pVCpu, pCtx);
|
---|
3066 |
|
---|
3067 | if ( pVCpu->hm.s.fUseGuestFpu
|
---|
3068 | && !CPUMIsGuestFPUStateActive(pVCpu))
|
---|
3069 | {
|
---|
3070 | CPUMR0LoadGuestFPU(pVM, pVCpu, pCtx);
|
---|
3071 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
3072 | }
|
---|
3073 |
|
---|
3074 | /* Load the state shared between host and guest (FPU, debug). */
|
---|
3075 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
3076 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE))
|
---|
3077 | hmR0SvmLoadSharedState(pVCpu, pVmcb, pCtx);
|
---|
3078 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT); /* Preemption might set this, nothing to do on AMD-V. */
|
---|
3079 | AssertMsg(!HMCPU_CF_VALUE(pVCpu), ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
|
---|
3080 |
|
---|
3081 | /* Setup TSC offsetting. */
|
---|
3082 | RTCPUID idCurrentCpu = HMR0GetCurrentCpu()->idCpu;
|
---|
3083 | if ( pSvmTransient->fUpdateTscOffsetting
|
---|
3084 | || idCurrentCpu != pVCpu->hm.s.idLastCpu)
|
---|
3085 | {
|
---|
3086 | hmR0SvmUpdateTscOffsetting(pVCpu);
|
---|
3087 | pSvmTransient->fUpdateTscOffsetting = false;
|
---|
3088 | }
|
---|
3089 |
|
---|
3090 | /* If we've migrating CPUs, mark the VMCB Clean bits as dirty. */
|
---|
3091 | if (idCurrentCpu != pVCpu->hm.s.idLastCpu)
|
---|
3092 | pVmcb->ctrl.u64VmcbCleanBits = 0;
|
---|
3093 |
|
---|
3094 | /* Store status of the shared guest-host state at the time of VMRUN. */
|
---|
3095 | #if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL)
|
---|
3096 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
3097 | {
|
---|
3098 | pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActivePending(pVCpu);
|
---|
3099 | pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActivePending(pVCpu);
|
---|
3100 | }
|
---|
3101 | else
|
---|
3102 | #endif
|
---|
3103 | {
|
---|
3104 | pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActive(pVCpu);
|
---|
3105 | pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActive(pVCpu);
|
---|
3106 | }
|
---|
3107 | pSvmTransient->fWasGuestFPUStateActive = CPUMIsGuestFPUStateActive(pVCpu);
|
---|
3108 |
|
---|
3109 | /* Flush the appropriate tagged-TLB entries. */
|
---|
3110 | ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true); /* Used for TLB-shootdowns, set this across the world switch. */
|
---|
3111 | hmR0SvmFlushTaggedTlb(pVCpu);
|
---|
3112 | Assert(HMR0GetCurrentCpu()->idCpu == pVCpu->hm.s.idLastCpu);
|
---|
3113 |
|
---|
3114 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatEntry, &pVCpu->hm.s.StatInGC, x);
|
---|
3115 |
|
---|
3116 | TMNotifyStartOfExecution(pVCpu); /* Finally, notify TM to resume its clocks as we're about
|
---|
3117 | to start executing. */
|
---|
3118 |
|
---|
3119 | /*
|
---|
3120 | * Save the current Host TSC_AUX and write the guest TSC_AUX to the host, so that
|
---|
3121 | * RDTSCPs (that don't cause exits) reads the guest MSR. See @bugref{3324}.
|
---|
3122 | *
|
---|
3123 | * This should be done -after- any RDTSCPs for obtaining the host timestamp (TM, STAM etc).
|
---|
3124 | */
|
---|
3125 | if ( (pVM->hm.s.cpuid.u32AMDFeatureEDX & X86_CPUID_EXT_FEATURE_EDX_RDTSCP)
|
---|
3126 | && !(pVmcb->ctrl.u32InterceptCtrl2 & SVM_CTRL2_INTERCEPT_RDTSCP))
|
---|
3127 | {
|
---|
3128 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_TSC_AUX, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
3129 | pVCpu->hm.s.u64HostTscAux = ASMRdMsr(MSR_K8_TSC_AUX);
|
---|
3130 | uint64_t u64GuestTscAux = CPUMR0GetGuestTscAux(pVCpu);
|
---|
3131 | if (u64GuestTscAux != pVCpu->hm.s.u64HostTscAux)
|
---|
3132 | ASMWrMsr(MSR_K8_TSC_AUX, u64GuestTscAux);
|
---|
3133 | pSvmTransient->fRestoreTscAuxMsr = true;
|
---|
3134 | }
|
---|
3135 | else
|
---|
3136 | {
|
---|
3137 | hmR0SvmSetMsrPermission(pVCpu, MSR_K8_TSC_AUX, SVMMSREXIT_INTERCEPT_READ, SVMMSREXIT_INTERCEPT_WRITE);
|
---|
3138 | pSvmTransient->fRestoreTscAuxMsr = false;
|
---|
3139 | }
|
---|
3140 |
|
---|
3141 | /* If VMCB Clean bits isn't supported by the CPU, simply mark all state-bits as dirty, indicating (re)load-from-VMCB. */
|
---|
3142 | if (!(pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN))
|
---|
3143 | pVmcb->ctrl.u64VmcbCleanBits = 0;
|
---|
3144 | }
|
---|
3145 |
|
---|
3146 |
|
---|
3147 | /**
|
---|
3148 | * Wrapper for running the guest code in AMD-V.
|
---|
3149 | *
|
---|
3150 | * @returns VBox strict status code.
|
---|
3151 | * @param pVM Pointer to the VM.
|
---|
3152 | * @param pVCpu Pointer to the VMCPU.
|
---|
3153 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3154 | *
|
---|
3155 | * @remarks No-long-jump zone!!!
|
---|
3156 | */
|
---|
3157 | DECLINLINE(int) hmR0SvmRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
3158 | {
|
---|
3159 | /*
|
---|
3160 | * 64-bit Windows uses XMM registers in the kernel as the Microsoft compiler expresses floating-point operations
|
---|
3161 | * using SSE instructions. Some XMM registers (XMM6-XMM15) are callee-saved and thus the need for this XMM wrapper.
|
---|
3162 | * Refer MSDN docs. "Configuring Programs for 64-bit / x64 Software Conventions / Register Usage" for details.
|
---|
3163 | */
|
---|
3164 | #ifdef VBOX_WITH_KERNEL_USING_XMM
|
---|
3165 | return HMR0SVMRunWrapXMM(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu,
|
---|
3166 | pVCpu->hm.s.svm.pfnVMRun);
|
---|
3167 | #else
|
---|
3168 | return pVCpu->hm.s.svm.pfnVMRun(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu);
|
---|
3169 | #endif
|
---|
3170 | }
|
---|
3171 |
|
---|
3172 |
|
---|
3173 | /**
|
---|
3174 | * Performs some essential restoration of state after running guest code in
|
---|
3175 | * AMD-V.
|
---|
3176 | *
|
---|
3177 | * @param pVM Pointer to the VM.
|
---|
3178 | * @param pVCpu Pointer to the VMCPU.
|
---|
3179 | * @param pMixedCtx Pointer to the guest-CPU context. The data maybe
|
---|
3180 | * out-of-sync. Make sure to update the required fields
|
---|
3181 | * before using them.
|
---|
3182 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
3183 | * @param rcVMRun Return code of VMRUN.
|
---|
3184 | *
|
---|
3185 | * @remarks Called with interrupts disabled.
|
---|
3186 | * @remarks No-long-jump zone!!! This function will however re-enable longjmps
|
---|
3187 | * unconditionally when it is safe to do so.
|
---|
3188 | */
|
---|
3189 | static void hmR0SvmPostRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient, int rcVMRun)
|
---|
3190 | {
|
---|
3191 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
3192 |
|
---|
3193 | ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, false); /* See HMInvalidatePageOnAllVCpus(): used for TLB-shootdowns. */
|
---|
3194 | ASMAtomicIncU32(&pVCpu->hm.s.cWorldSwitchExits); /* Initialized in vmR3CreateUVM(): used for TLB-shootdowns. */
|
---|
3195 |
|
---|
3196 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
3197 | pVmcb->ctrl.u64VmcbCleanBits = HMSVM_VMCB_CLEAN_ALL; /* Mark the VMCB-state cache as unmodified by VMM. */
|
---|
3198 |
|
---|
3199 | if (pSvmTransient->fRestoreTscAuxMsr)
|
---|
3200 | {
|
---|
3201 | uint64_t u64GuestTscAuxMsr = ASMRdMsr(MSR_K8_TSC_AUX);
|
---|
3202 | CPUMR0SetGuestTscAux(pVCpu, u64GuestTscAuxMsr);
|
---|
3203 | if (u64GuestTscAuxMsr != pVCpu->hm.s.u64HostTscAux)
|
---|
3204 | ASMWrMsr(MSR_K8_TSC_AUX, pVCpu->hm.s.u64HostTscAux);
|
---|
3205 | }
|
---|
3206 |
|
---|
3207 | if (!(pVmcb->ctrl.u32InterceptCtrl1 & SVM_CTRL1_INTERCEPT_RDTSC))
|
---|
3208 | {
|
---|
3209 | /** @todo Find a way to fix hardcoding a guestimate. */
|
---|
3210 | TMCpuTickSetLastSeen(pVCpu, ASMReadTSC() + pVmcb->ctrl.u64TSCOffset - 0x400);
|
---|
3211 | }
|
---|
3212 |
|
---|
3213 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatInGC, &pVCpu->hm.s.StatExit1, x);
|
---|
3214 | TMNotifyEndOfExecution(pVCpu); /* Notify TM that the guest is no longer running. */
|
---|
3215 | VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
|
---|
3216 |
|
---|
3217 | Assert(!(ASMGetFlags() & X86_EFL_IF));
|
---|
3218 | ASMSetFlags(pSvmTransient->uEflags); /* Enable interrupts. */
|
---|
3219 | VMMRZCallRing3Enable(pVCpu); /* It is now safe to do longjmps to ring-3!!! */
|
---|
3220 |
|
---|
3221 | /* If VMRUN failed, we can bail out early. This does -not- cover SVM_EXIT_INVALID. */
|
---|
3222 | if (RT_UNLIKELY(rcVMRun != VINF_SUCCESS))
|
---|
3223 | {
|
---|
3224 | Log4(("VMRUN failure: rcVMRun=%Rrc\n", rcVMRun));
|
---|
3225 | return;
|
---|
3226 | }
|
---|
3227 |
|
---|
3228 | pSvmTransient->u64ExitCode = pVmcb->ctrl.u64ExitCode; /* Save the #VMEXIT reason. */
|
---|
3229 | HMCPU_EXIT_HISTORY_ADD(pVCpu, pVmcb->ctrl.u64ExitCode); /* Update the #VMEXIT history array. */
|
---|
3230 | pSvmTransient->fVectoringDoublePF = false; /* Vectoring double page-fault needs to be determined later. */
|
---|
3231 | pSvmTransient->fVectoringPF = false; /* Vectoring page-fault needs to be determined later. */
|
---|
3232 |
|
---|
3233 | hmR0SvmSaveGuestState(pVCpu, pMixedCtx); /* Save the guest state from the VMCB to the guest-CPU context. */
|
---|
3234 |
|
---|
3235 | if (RT_LIKELY(pSvmTransient->u64ExitCode != (uint64_t)SVM_EXIT_INVALID))
|
---|
3236 | {
|
---|
3237 | if (pVCpu->hm.s.svm.fSyncVTpr)
|
---|
3238 | {
|
---|
3239 | /* TPR patching (for 32-bit guests) uses LSTAR MSR for holding the TPR value, otherwise uses the VTPR. */
|
---|
3240 | if ( pVM->hm.s.fTPRPatchingActive
|
---|
3241 | && (pMixedCtx->msrLSTAR & 0xff) != pSvmTransient->u8GuestTpr)
|
---|
3242 | {
|
---|
3243 | int rc = PDMApicSetTPR(pVCpu, pMixedCtx->msrLSTAR & 0xff);
|
---|
3244 | AssertRC(rc);
|
---|
3245 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
3246 | }
|
---|
3247 | else if (pSvmTransient->u8GuestTpr != pVmcb->ctrl.IntCtrl.n.u8VTPR)
|
---|
3248 | {
|
---|
3249 | int rc = PDMApicSetTPR(pVCpu, pVmcb->ctrl.IntCtrl.n.u8VTPR << 4);
|
---|
3250 | AssertRC(rc);
|
---|
3251 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
3252 | }
|
---|
3253 | }
|
---|
3254 | }
|
---|
3255 | }
|
---|
3256 |
|
---|
3257 |
|
---|
3258 | /**
|
---|
3259 | * Runs the guest code using AMD-V.
|
---|
3260 | *
|
---|
3261 | * @returns VBox status code.
|
---|
3262 | * @param pVM Pointer to the VM.
|
---|
3263 | * @param pVCpu Pointer to the VMCPU.
|
---|
3264 | */
|
---|
3265 | static int hmR0SvmRunGuestCodeNormal(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
3266 | {
|
---|
3267 | SVMTRANSIENT SvmTransient;
|
---|
3268 | SvmTransient.fUpdateTscOffsetting = true;
|
---|
3269 | uint32_t cLoops = 0;
|
---|
3270 | int rc = VERR_INTERNAL_ERROR_5;
|
---|
3271 |
|
---|
3272 | for (;; cLoops++)
|
---|
3273 | {
|
---|
3274 | Assert(!HMR0SuspendPending());
|
---|
3275 | HMSVM_ASSERT_CPU_SAFE();
|
---|
3276 |
|
---|
3277 | /* Preparatory work for running guest code, this may force us to return
|
---|
3278 | to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
|
---|
3279 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
|
---|
3280 | rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
3281 | if (rc != VINF_SUCCESS)
|
---|
3282 | break;
|
---|
3283 |
|
---|
3284 | /*
|
---|
3285 | * No longjmps to ring-3 from this point on!!!
|
---|
3286 | * Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
|
---|
3287 | * This also disables flushing of the R0-logger instance (if any).
|
---|
3288 | */
|
---|
3289 | hmR0SvmPreRunGuestCommitted(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
3290 | rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
|
---|
3291 |
|
---|
3292 | /* Restore any residual host-state and save any bits shared between host
|
---|
3293 | and guest into the guest-CPU state. Re-enables interrupts! */
|
---|
3294 | hmR0SvmPostRunGuest(pVM, pVCpu, pCtx, &SvmTransient, rc);
|
---|
3295 |
|
---|
3296 | if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
|
---|
3297 | || SvmTransient.u64ExitCode == (uint64_t)SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
|
---|
3298 | {
|
---|
3299 | if (rc == VINF_SUCCESS)
|
---|
3300 | rc = VERR_SVM_INVALID_GUEST_STATE;
|
---|
3301 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
|
---|
3302 | hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
|
---|
3303 | break;
|
---|
3304 | }
|
---|
3305 |
|
---|
3306 | /* Handle the #VMEXIT. */
|
---|
3307 | HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
|
---|
3308 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
|
---|
3309 | rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
|
---|
3310 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
|
---|
3311 | if (rc != VINF_SUCCESS)
|
---|
3312 | break;
|
---|
3313 | else if (cLoops > pVM->hm.s.cMaxResumeLoops)
|
---|
3314 | {
|
---|
3315 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMaxResume);
|
---|
3316 | rc = VINF_EM_RAW_INTERRUPT;
|
---|
3317 | break;
|
---|
3318 | }
|
---|
3319 | }
|
---|
3320 |
|
---|
3321 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
|
---|
3322 | return rc;
|
---|
3323 | }
|
---|
3324 |
|
---|
3325 |
|
---|
3326 | /**
|
---|
3327 | * Runs the guest code using AMD-V in single step mode.
|
---|
3328 | *
|
---|
3329 | * @returns VBox status code.
|
---|
3330 | * @param pVM Pointer to the VM.
|
---|
3331 | * @param pVCpu Pointer to the VMCPU.
|
---|
3332 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3333 | */
|
---|
3334 | static int hmR0SvmRunGuestCodeStep(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
3335 | {
|
---|
3336 | SVMTRANSIENT SvmTransient;
|
---|
3337 | SvmTransient.fUpdateTscOffsetting = true;
|
---|
3338 | uint32_t cLoops = 0;
|
---|
3339 | int rc = VERR_INTERNAL_ERROR_5;
|
---|
3340 | uint16_t uCsStart = pCtx->cs.Sel;
|
---|
3341 | uint64_t uRipStart = pCtx->rip;
|
---|
3342 |
|
---|
3343 | for (;; cLoops++)
|
---|
3344 | {
|
---|
3345 | Assert(!HMR0SuspendPending());
|
---|
3346 | AssertMsg(pVCpu->hm.s.idEnteredCpu == RTMpCpuId(),
|
---|
3347 | ("Illegal migration! Entered on CPU %u Current %u cLoops=%u\n", (unsigned)pVCpu->hm.s.idEnteredCpu,
|
---|
3348 | (unsigned)RTMpCpuId(), cLoops));
|
---|
3349 |
|
---|
3350 | /* Preparatory work for running guest code, this may force us to return
|
---|
3351 | to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
|
---|
3352 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
|
---|
3353 | rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
3354 | if (rc != VINF_SUCCESS)
|
---|
3355 | break;
|
---|
3356 |
|
---|
3357 | /*
|
---|
3358 | * No longjmps to ring-3 from this point on!!!
|
---|
3359 | * Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
|
---|
3360 | * This also disables flushing of the R0-logger instance (if any).
|
---|
3361 | */
|
---|
3362 | VMMRZCallRing3Disable(pVCpu);
|
---|
3363 | VMMRZCallRing3RemoveNotification(pVCpu);
|
---|
3364 | hmR0SvmPreRunGuestCommitted(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
3365 |
|
---|
3366 | rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
|
---|
3367 |
|
---|
3368 | /*
|
---|
3369 | * Restore any residual host-state and save any bits shared between host and guest into the guest-CPU state.
|
---|
3370 | * This will also re-enable longjmps to ring-3 when it has reached a safe point!!!
|
---|
3371 | */
|
---|
3372 | hmR0SvmPostRunGuest(pVM, pVCpu, pCtx, &SvmTransient, rc);
|
---|
3373 | if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
|
---|
3374 | || SvmTransient.u64ExitCode == (uint64_t)SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
|
---|
3375 | {
|
---|
3376 | if (rc == VINF_SUCCESS)
|
---|
3377 | rc = VERR_SVM_INVALID_GUEST_STATE;
|
---|
3378 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
|
---|
3379 | hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
|
---|
3380 | return rc;
|
---|
3381 | }
|
---|
3382 |
|
---|
3383 | /* Handle the #VMEXIT. */
|
---|
3384 | HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
|
---|
3385 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
|
---|
3386 | rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
|
---|
3387 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
|
---|
3388 | if (rc != VINF_SUCCESS)
|
---|
3389 | break;
|
---|
3390 | else if (cLoops > pVM->hm.s.cMaxResumeLoops)
|
---|
3391 | {
|
---|
3392 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMaxResume);
|
---|
3393 | rc = VINF_EM_RAW_INTERRUPT;
|
---|
3394 | break;
|
---|
3395 | }
|
---|
3396 |
|
---|
3397 | /*
|
---|
3398 | * Did the RIP change, if so, consider it a single step.
|
---|
3399 | * Otherwise, make sure one of the TFs gets set.
|
---|
3400 | */
|
---|
3401 | if ( pCtx->rip != uRipStart
|
---|
3402 | || pCtx->cs.Sel != uCsStart)
|
---|
3403 | {
|
---|
3404 | rc = VINF_EM_DBG_STEPPED;
|
---|
3405 | break;
|
---|
3406 | }
|
---|
3407 | pVCpu->hm.s.fContextUseFlags |= HM_CHANGED_GUEST_DEBUG;
|
---|
3408 | }
|
---|
3409 |
|
---|
3410 | /*
|
---|
3411 | * Clear the X86_EFL_TF if necessary.
|
---|
3412 | */
|
---|
3413 | if (pVCpu->hm.s.fClearTrapFlag)
|
---|
3414 | {
|
---|
3415 | pVCpu->hm.s.fClearTrapFlag = false;
|
---|
3416 | pCtx->eflags.Bits.u1TF = 0;
|
---|
3417 | }
|
---|
3418 |
|
---|
3419 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
|
---|
3420 | return rc;
|
---|
3421 | }
|
---|
3422 |
|
---|
3423 |
|
---|
3424 | /**
|
---|
3425 | * Runs the guest code using AMD-V.
|
---|
3426 | *
|
---|
3427 | * @returns VBox status code.
|
---|
3428 | * @param pVM Pointer to the VM.
|
---|
3429 | * @param pVCpu Pointer to the VMCPU.
|
---|
3430 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3431 | */
|
---|
3432 | VMMR0DECL(int) SVMR0RunGuestCode(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
3433 | {
|
---|
3434 | Assert(VMMRZCallRing3IsEnabled(pVCpu));
|
---|
3435 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
3436 | VMMRZCallRing3SetNotification(pVCpu, hmR0SvmCallRing3Callback, pCtx);
|
---|
3437 |
|
---|
3438 | int rc;
|
---|
3439 | if (!pVCpu->hm.s.fSingleInstruction && !DBGFIsStepping(pVCpu))
|
---|
3440 | rc = hmR0SvmRunGuestCodeNormal(pVM, pVCpu, pCtx);
|
---|
3441 | else
|
---|
3442 | rc = hmR0SvmRunGuestCodeStep(pVM, pVCpu, pCtx);
|
---|
3443 |
|
---|
3444 | if (rc == VERR_EM_INTERPRETER)
|
---|
3445 | rc = VINF_EM_RAW_EMULATE_INSTR;
|
---|
3446 | else if (rc == VINF_EM_RESET)
|
---|
3447 | rc = VINF_EM_TRIPLE_FAULT;
|
---|
3448 |
|
---|
3449 | /* Prepare to return to ring-3. This will remove longjmp notifications. */
|
---|
3450 | hmR0SvmExitToRing3(pVM, pVCpu, pCtx, rc);
|
---|
3451 | Assert(!VMMRZCallRing3IsNotificationSet(pVCpu));
|
---|
3452 | return rc;
|
---|
3453 | }
|
---|
3454 |
|
---|
3455 |
|
---|
3456 | /**
|
---|
3457 | * Handles a #VMEXIT (for all EXITCODE values except SVM_EXIT_INVALID).
|
---|
3458 | *
|
---|
3459 | * @returns VBox status code (informational status codes included).
|
---|
3460 | * @param pVCpu Pointer to the VMCPU.
|
---|
3461 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3462 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
3463 | */
|
---|
3464 | DECLINLINE(int) hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
3465 | {
|
---|
3466 | Assert(pSvmTransient->u64ExitCode != (uint64_t)SVM_EXIT_INVALID);
|
---|
3467 | Assert(pSvmTransient->u64ExitCode <= SVM_EXIT_MAX);
|
---|
3468 |
|
---|
3469 | /*
|
---|
3470 | * The ordering of the case labels is based on most-frequently-occurring #VMEXITs for most guests under
|
---|
3471 | * normal workloads (for some definition of "normal").
|
---|
3472 | */
|
---|
3473 | uint32_t u32ExitCode = pSvmTransient->u64ExitCode;
|
---|
3474 | switch (pSvmTransient->u64ExitCode)
|
---|
3475 | {
|
---|
3476 | case SVM_EXIT_NPF:
|
---|
3477 | return hmR0SvmExitNestedPF(pVCpu, pCtx, pSvmTransient);
|
---|
3478 |
|
---|
3479 | case SVM_EXIT_IOIO:
|
---|
3480 | return hmR0SvmExitIOInstr(pVCpu, pCtx, pSvmTransient);
|
---|
3481 |
|
---|
3482 | case SVM_EXIT_RDTSC:
|
---|
3483 | return hmR0SvmExitRdtsc(pVCpu, pCtx, pSvmTransient);
|
---|
3484 |
|
---|
3485 | case SVM_EXIT_RDTSCP:
|
---|
3486 | return hmR0SvmExitRdtscp(pVCpu, pCtx, pSvmTransient);
|
---|
3487 |
|
---|
3488 | case SVM_EXIT_CPUID:
|
---|
3489 | return hmR0SvmExitCpuid(pVCpu, pCtx, pSvmTransient);
|
---|
3490 |
|
---|
3491 | case SVM_EXIT_EXCEPTION_E: /* X86_XCPT_PF */
|
---|
3492 | return hmR0SvmExitXcptPF(pVCpu, pCtx, pSvmTransient);
|
---|
3493 |
|
---|
3494 | case SVM_EXIT_EXCEPTION_7: /* X86_XCPT_NM */
|
---|
3495 | return hmR0SvmExitXcptNM(pVCpu, pCtx, pSvmTransient);
|
---|
3496 |
|
---|
3497 | case SVM_EXIT_EXCEPTION_10: /* X86_XCPT_MF */
|
---|
3498 | return hmR0SvmExitXcptMF(pVCpu, pCtx, pSvmTransient);
|
---|
3499 |
|
---|
3500 | case SVM_EXIT_EXCEPTION_1: /* X86_XCPT_DB */
|
---|
3501 | return hmR0SvmExitXcptDB(pVCpu, pCtx, pSvmTransient);
|
---|
3502 |
|
---|
3503 | case SVM_EXIT_MONITOR:
|
---|
3504 | return hmR0SvmExitMonitor(pVCpu, pCtx, pSvmTransient);
|
---|
3505 |
|
---|
3506 | case SVM_EXIT_MWAIT:
|
---|
3507 | return hmR0SvmExitMwait(pVCpu, pCtx, pSvmTransient);
|
---|
3508 |
|
---|
3509 | case SVM_EXIT_HLT:
|
---|
3510 | return hmR0SvmExitHlt(pVCpu, pCtx, pSvmTransient);
|
---|
3511 |
|
---|
3512 | case SVM_EXIT_READ_CR0:
|
---|
3513 | case SVM_EXIT_READ_CR3:
|
---|
3514 | case SVM_EXIT_READ_CR4:
|
---|
3515 | return hmR0SvmExitReadCRx(pVCpu, pCtx, pSvmTransient);
|
---|
3516 |
|
---|
3517 | case SVM_EXIT_WRITE_CR0:
|
---|
3518 | case SVM_EXIT_WRITE_CR3:
|
---|
3519 | case SVM_EXIT_WRITE_CR4:
|
---|
3520 | case SVM_EXIT_WRITE_CR8:
|
---|
3521 | return hmR0SvmExitWriteCRx(pVCpu, pCtx, pSvmTransient);
|
---|
3522 |
|
---|
3523 | case SVM_EXIT_VINTR:
|
---|
3524 | return hmR0SvmExitVIntr(pVCpu, pCtx, pSvmTransient);
|
---|
3525 |
|
---|
3526 | case SVM_EXIT_INTR:
|
---|
3527 | case SVM_EXIT_FERR_FREEZE:
|
---|
3528 | case SVM_EXIT_NMI:
|
---|
3529 | return hmR0SvmExitIntr(pVCpu, pCtx, pSvmTransient);
|
---|
3530 |
|
---|
3531 | case SVM_EXIT_MSR:
|
---|
3532 | return hmR0SvmExitMsr(pVCpu, pCtx, pSvmTransient);
|
---|
3533 |
|
---|
3534 | case SVM_EXIT_INVLPG:
|
---|
3535 | return hmR0SvmExitInvlpg(pVCpu, pCtx, pSvmTransient);
|
---|
3536 |
|
---|
3537 | case SVM_EXIT_WBINVD:
|
---|
3538 | return hmR0SvmExitWbinvd(pVCpu, pCtx, pSvmTransient);
|
---|
3539 |
|
---|
3540 | case SVM_EXIT_INVD:
|
---|
3541 | return hmR0SvmExitInvd(pVCpu, pCtx, pSvmTransient);
|
---|
3542 |
|
---|
3543 | case SVM_EXIT_RDPMC:
|
---|
3544 | return hmR0SvmExitRdpmc(pVCpu, pCtx, pSvmTransient);
|
---|
3545 |
|
---|
3546 | default:
|
---|
3547 | {
|
---|
3548 | switch (pSvmTransient->u64ExitCode)
|
---|
3549 | {
|
---|
3550 | case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
|
---|
3551 | case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7: case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9:
|
---|
3552 | case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11: case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13:
|
---|
3553 | case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
|
---|
3554 | return hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
|
---|
3555 |
|
---|
3556 | case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
|
---|
3557 | case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7: case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9:
|
---|
3558 | case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11: case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13:
|
---|
3559 | case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
|
---|
3560 | return hmR0SvmExitWriteDRx(pVCpu, pCtx, pSvmTransient);
|
---|
3561 |
|
---|
3562 | case SVM_EXIT_TASK_SWITCH:
|
---|
3563 | return hmR0SvmExitTaskSwitch(pVCpu, pCtx, pSvmTransient);
|
---|
3564 |
|
---|
3565 | case SVM_EXIT_VMMCALL:
|
---|
3566 | return hmR0SvmExitVmmCall(pVCpu, pCtx, pSvmTransient);
|
---|
3567 |
|
---|
3568 | case SVM_EXIT_IRET:
|
---|
3569 | return hmR0SvmExitIret(pVCpu, pCtx, pSvmTransient);
|
---|
3570 |
|
---|
3571 | case SVM_EXIT_SHUTDOWN:
|
---|
3572 | return hmR0SvmExitShutdown(pVCpu, pCtx, pSvmTransient);
|
---|
3573 |
|
---|
3574 | case SVM_EXIT_SMI:
|
---|
3575 | case SVM_EXIT_INIT:
|
---|
3576 | {
|
---|
3577 | /*
|
---|
3578 | * We don't intercept NMIs. As for INIT signals, it really shouldn't ever happen here. If it ever does,
|
---|
3579 | * we want to know about it so log the exit code and bail.
|
---|
3580 | */
|
---|
3581 | AssertMsgFailed(("hmR0SvmHandleExit: Unexpected exit %#RX32\n", (uint32_t)pSvmTransient->u64ExitCode));
|
---|
3582 | pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
|
---|
3583 | return VERR_SVM_UNEXPECTED_EXIT;
|
---|
3584 | }
|
---|
3585 |
|
---|
3586 | case SVM_EXIT_INVLPGA:
|
---|
3587 | case SVM_EXIT_RSM:
|
---|
3588 | case SVM_EXIT_VMRUN:
|
---|
3589 | case SVM_EXIT_VMLOAD:
|
---|
3590 | case SVM_EXIT_VMSAVE:
|
---|
3591 | case SVM_EXIT_STGI:
|
---|
3592 | case SVM_EXIT_CLGI:
|
---|
3593 | case SVM_EXIT_SKINIT:
|
---|
3594 | return hmR0SvmExitSetPendingXcptUD(pVCpu, pCtx, pSvmTransient);
|
---|
3595 |
|
---|
3596 | #ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
|
---|
3597 | case SVM_EXIT_EXCEPTION_0: /* X86_XCPT_DE */
|
---|
3598 | /* SVM_EXIT_EXCEPTION_1: */ /* X86_XCPT_DB - Handled above. */
|
---|
3599 | case SVM_EXIT_EXCEPTION_2: /* X86_XCPT_NMI */
|
---|
3600 | case SVM_EXIT_EXCEPTION_3: /* X86_XCPT_BP */
|
---|
3601 | case SVM_EXIT_EXCEPTION_4: /* X86_XCPT_OF */
|
---|
3602 | case SVM_EXIT_EXCEPTION_5: /* X86_XCPT_BR */
|
---|
3603 | case SVM_EXIT_EXCEPTION_6: /* X86_XCPT_UD */
|
---|
3604 | /* SVM_EXIT_EXCEPTION_7: */ /* X86_XCPT_NM - Handled above. */
|
---|
3605 | case SVM_EXIT_EXCEPTION_8: /* X86_XCPT_DF */
|
---|
3606 | case SVM_EXIT_EXCEPTION_9: /* X86_XCPT_CO_SEG_OVERRUN */
|
---|
3607 | case SVM_EXIT_EXCEPTION_A: /* X86_XCPT_TS */
|
---|
3608 | case SVM_EXIT_EXCEPTION_B: /* X86_XCPT_NP */
|
---|
3609 | case SVM_EXIT_EXCEPTION_C: /* X86_XCPT_SS */
|
---|
3610 | case SVM_EXIT_EXCEPTION_D: /* X86_XCPT_GP */
|
---|
3611 | /* SVM_EXIT_EXCEPTION_E: */ /* X86_XCPT_PF - Handled above. */
|
---|
3612 | /* SVM_EXIT_EXCEPTION_10: */ /* X86_XCPT_MF - Handled above. */
|
---|
3613 | case SVM_EXIT_EXCEPTION_11: /* X86_XCPT_AC */
|
---|
3614 | case SVM_EXIT_EXCEPTION_12: /* X86_XCPT_MC */
|
---|
3615 | case SVM_EXIT_EXCEPTION_13: /* X86_XCPT_XF */
|
---|
3616 | case SVM_EXIT_EXCEPTION_F: /* Reserved */
|
---|
3617 | case SVM_EXIT_EXCEPTION_14: case SVM_EXIT_EXCEPTION_15: case SVM_EXIT_EXCEPTION_16:
|
---|
3618 | case SVM_EXIT_EXCEPTION_17: case SVM_EXIT_EXCEPTION_18: case SVM_EXIT_EXCEPTION_19:
|
---|
3619 | case SVM_EXIT_EXCEPTION_1A: case SVM_EXIT_EXCEPTION_1B: case SVM_EXIT_EXCEPTION_1C:
|
---|
3620 | case SVM_EXIT_EXCEPTION_1D: case SVM_EXIT_EXCEPTION_1E: case SVM_EXIT_EXCEPTION_1F:
|
---|
3621 | {
|
---|
3622 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
3623 | SVMEVENT Event;
|
---|
3624 | Event.u = 0;
|
---|
3625 | Event.n.u1Valid = 1;
|
---|
3626 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3627 | Event.n.u8Vector = pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0;
|
---|
3628 |
|
---|
3629 | switch (Event.n.u8Vector)
|
---|
3630 | {
|
---|
3631 | case X86_XCPT_DE:
|
---|
3632 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDE);
|
---|
3633 | break;
|
---|
3634 |
|
---|
3635 | case X86_XCPT_BP:
|
---|
3636 | /** Saves the wrong EIP on the stack (pointing to the int3) instead of the
|
---|
3637 | * next instruction. */
|
---|
3638 | /** @todo Investigate this later. */
|
---|
3639 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestBP);
|
---|
3640 | break;
|
---|
3641 |
|
---|
3642 | case X86_XCPT_UD:
|
---|
3643 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestUD);
|
---|
3644 | break;
|
---|
3645 |
|
---|
3646 | case X86_XCPT_NP:
|
---|
3647 | Event.n.u1ErrorCodeValid = 1;
|
---|
3648 | Event.n.u32ErrorCode = pVmcb->ctrl.u64ExitInfo1;
|
---|
3649 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestNP);
|
---|
3650 | break;
|
---|
3651 |
|
---|
3652 | case X86_XCPT_SS:
|
---|
3653 | Event.n.u1ErrorCodeValid = 1;
|
---|
3654 | Event.n.u32ErrorCode = pVmcb->ctrl.u64ExitInfo1;
|
---|
3655 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestSS);
|
---|
3656 | break;
|
---|
3657 |
|
---|
3658 | case X86_XCPT_GP:
|
---|
3659 | Event.n.u1ErrorCodeValid = 1;
|
---|
3660 | Event.n.u32ErrorCode = pVmcb->ctrl.u64ExitInfo1;
|
---|
3661 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestGP);
|
---|
3662 | break;
|
---|
3663 |
|
---|
3664 | default:
|
---|
3665 | AssertMsgFailed(("hmR0SvmHandleExit: Unexpected exit caused by exception %#x\n", Event.n.u8Vector));
|
---|
3666 | pVCpu->hm.s.u32HMError = Event.n.u8Vector;
|
---|
3667 | return VERR_SVM_UNEXPECTED_XCPT_EXIT;
|
---|
3668 | }
|
---|
3669 |
|
---|
3670 | Log4(("#Xcpt: Vector=%#x at CS:RIP=%04x:%RGv\n", Event.n.u8Vector, pCtx->cs.Sel, (RTGCPTR)pCtx->rip));
|
---|
3671 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3672 | return VINF_SUCCESS;
|
---|
3673 | }
|
---|
3674 | #endif /* HMSVM_ALWAYS_TRAP_ALL_XCPTS */
|
---|
3675 |
|
---|
3676 | default:
|
---|
3677 | {
|
---|
3678 | AssertMsgFailed(("hmR0SvmHandleExit: Unknown exit code %#x\n", u32ExitCode));
|
---|
3679 | pVCpu->hm.s.u32HMError = u32ExitCode;
|
---|
3680 | return VERR_SVM_UNKNOWN_EXIT;
|
---|
3681 | }
|
---|
3682 | }
|
---|
3683 | }
|
---|
3684 | }
|
---|
3685 | return VERR_INTERNAL_ERROR_5; /* Should never happen. */
|
---|
3686 | }
|
---|
3687 |
|
---|
3688 |
|
---|
3689 | #ifdef DEBUG
|
---|
3690 | /* Is there some generic IPRT define for this that are not in Runtime/internal/\* ?? */
|
---|
3691 | # define HMSVM_ASSERT_PREEMPT_CPUID_VAR() \
|
---|
3692 | RTCPUID const idAssertCpu = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId()
|
---|
3693 |
|
---|
3694 | # define HMSVM_ASSERT_PREEMPT_CPUID() \
|
---|
3695 | do \
|
---|
3696 | { \
|
---|
3697 | RTCPUID const idAssertCpuNow = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId(); \
|
---|
3698 | AssertMsg(idAssertCpu == idAssertCpuNow, ("SVM %#x, %#x\n", idAssertCpu, idAssertCpuNow)); \
|
---|
3699 | } while (0)
|
---|
3700 |
|
---|
3701 | # define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() \
|
---|
3702 | do { \
|
---|
3703 | AssertPtr(pVCpu); \
|
---|
3704 | AssertPtr(pCtx); \
|
---|
3705 | AssertPtr(pSvmTransient); \
|
---|
3706 | Assert(ASMIntAreEnabled()); \
|
---|
3707 | HMSVM_ASSERT_PREEMPT_SAFE(); \
|
---|
3708 | HMSVM_ASSERT_PREEMPT_CPUID_VAR(); \
|
---|
3709 | Log4Func(("vcpu[%u] -v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-\n", (uint32_t)pVCpu->idCpu)); \
|
---|
3710 | HMSVM_ASSERT_PREEMPT_SAFE(); \
|
---|
3711 | if (VMMR0IsLogFlushDisabled(pVCpu)) \
|
---|
3712 | HMSVM_ASSERT_PREEMPT_CPUID(); \
|
---|
3713 | } while (0)
|
---|
3714 | #else /* Release builds */
|
---|
3715 | # define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() do { NOREF(pVCpu); NOREF(pCtx); NOREF(pSvmTransient); } while (0)
|
---|
3716 | #endif
|
---|
3717 |
|
---|
3718 |
|
---|
3719 | /**
|
---|
3720 | * Worker for hmR0SvmInterpretInvlpg().
|
---|
3721 | *
|
---|
3722 | * @return VBox status code.
|
---|
3723 | * @param pVCpu Pointer to the VMCPU.
|
---|
3724 | * @param pCpu Pointer to the disassembler state.
|
---|
3725 | * @param pRegFrame Pointer to the register frame.
|
---|
3726 | */
|
---|
3727 | static int hmR0SvmInterpretInvlPgEx(PVMCPU pVCpu, PDISCPUSTATE pCpu, PCPUMCTXCORE pRegFrame)
|
---|
3728 | {
|
---|
3729 | DISQPVPARAMVAL Param1;
|
---|
3730 | RTGCPTR GCPtrPage;
|
---|
3731 |
|
---|
3732 | int rc = DISQueryParamVal(pRegFrame, pCpu, &pCpu->Param1, &Param1, DISQPVWHICH_SRC);
|
---|
3733 | if (RT_FAILURE(rc))
|
---|
3734 | return VERR_EM_INTERPRETER;
|
---|
3735 |
|
---|
3736 | if ( Param1.type == DISQPV_TYPE_IMMEDIATE
|
---|
3737 | || Param1.type == DISQPV_TYPE_ADDRESS)
|
---|
3738 | {
|
---|
3739 | if (!(Param1.flags & (DISQPV_FLAG_32 | DISQPV_FLAG_64)))
|
---|
3740 | return VERR_EM_INTERPRETER;
|
---|
3741 |
|
---|
3742 | GCPtrPage = Param1.val.val64;
|
---|
3743 | VBOXSTRICTRC rc2 = EMInterpretInvlpg(pVCpu->CTX_SUFF(pVM), pVCpu, pRegFrame, GCPtrPage);
|
---|
3744 | rc = VBOXSTRICTRC_VAL(rc2);
|
---|
3745 | }
|
---|
3746 | else
|
---|
3747 | {
|
---|
3748 | Log4(("hmR0SvmInterpretInvlPgEx invalid parameter type %#x\n", Param1.type));
|
---|
3749 | rc = VERR_EM_INTERPRETER;
|
---|
3750 | }
|
---|
3751 |
|
---|
3752 | return rc;
|
---|
3753 | }
|
---|
3754 |
|
---|
3755 |
|
---|
3756 | /**
|
---|
3757 | * Interprets INVLPG.
|
---|
3758 | *
|
---|
3759 | * @returns VBox status code.
|
---|
3760 | * @retval VINF_* Scheduling instructions.
|
---|
3761 | * @retval VERR_EM_INTERPRETER Something we can't cope with.
|
---|
3762 | * @retval VERR_* Fatal errors.
|
---|
3763 | *
|
---|
3764 | * @param pVM Pointer to the VM.
|
---|
3765 | * @param pRegFrame Pointer to the register frame.
|
---|
3766 | *
|
---|
3767 | * @remarks Updates the RIP if the instruction was executed successfully.
|
---|
3768 | */
|
---|
3769 | static int hmR0SvmInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame)
|
---|
3770 | {
|
---|
3771 | /* Only allow 32 & 64 bit code. */
|
---|
3772 | if (CPUMGetGuestCodeBits(pVCpu) != 16)
|
---|
3773 | {
|
---|
3774 | PDISSTATE pDis = &pVCpu->hm.s.DisState;
|
---|
3775 | int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL /* pcbInstr */);
|
---|
3776 | if ( RT_SUCCESS(rc)
|
---|
3777 | && pDis->pCurInstr->uOpcode == OP_INVLPG)
|
---|
3778 | {
|
---|
3779 | rc = hmR0SvmInterpretInvlPgEx(pVCpu, pDis, pRegFrame);
|
---|
3780 | if (RT_SUCCESS(rc))
|
---|
3781 | pRegFrame->rip += pDis->cbInstr;
|
---|
3782 | return rc;
|
---|
3783 | }
|
---|
3784 | else
|
---|
3785 | Log4(("hmR0SvmInterpretInvlpg: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
|
---|
3786 | }
|
---|
3787 | return VERR_EM_INTERPRETER;
|
---|
3788 | }
|
---|
3789 |
|
---|
3790 |
|
---|
3791 | /**
|
---|
3792 | * Sets an invalid-opcode (#UD) exception as pending-for-injection into the VM.
|
---|
3793 | *
|
---|
3794 | * @param pVCpu Pointer to the VMCPU.
|
---|
3795 | */
|
---|
3796 | DECLINLINE(void) hmR0SvmSetPendingXcptUD(PVMCPU pVCpu)
|
---|
3797 | {
|
---|
3798 | SVMEVENT Event;
|
---|
3799 | Event.u = 0;
|
---|
3800 | Event.n.u1Valid = 1;
|
---|
3801 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3802 | Event.n.u8Vector = X86_XCPT_UD;
|
---|
3803 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3804 | }
|
---|
3805 |
|
---|
3806 |
|
---|
3807 | /**
|
---|
3808 | * Sets a debug (#DB) exception as pending-for-injection into the VM.
|
---|
3809 | *
|
---|
3810 | * @param pVCpu Pointer to the VMCPU.
|
---|
3811 | */
|
---|
3812 | DECLINLINE(void) hmR0SvmSetPendingXcptDB(PVMCPU pVCpu)
|
---|
3813 | {
|
---|
3814 | SVMEVENT Event;
|
---|
3815 | Event.u = 0;
|
---|
3816 | Event.n.u1Valid = 1;
|
---|
3817 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3818 | Event.n.u8Vector = X86_XCPT_DB;
|
---|
3819 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3820 | }
|
---|
3821 |
|
---|
3822 |
|
---|
3823 | /**
|
---|
3824 | * Sets a page fault (#PF) exception as pending-for-injection into the VM.
|
---|
3825 | *
|
---|
3826 | * @param pVCpu Pointer to the VMCPU.
|
---|
3827 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3828 | * @param u32ErrCode The error-code for the page-fault.
|
---|
3829 | * @param uFaultAddress The page fault address (CR2).
|
---|
3830 | *
|
---|
3831 | * @remarks This updates the guest CR2 with @a uFaultAddress!
|
---|
3832 | */
|
---|
3833 | DECLINLINE(void) hmR0SvmSetPendingXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t u32ErrCode, RTGCUINTPTR uFaultAddress)
|
---|
3834 | {
|
---|
3835 | SVMEVENT Event;
|
---|
3836 | Event.u = 0;
|
---|
3837 | Event.n.u1Valid = 1;
|
---|
3838 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3839 | Event.n.u8Vector = X86_XCPT_PF;
|
---|
3840 | Event.n.u1ErrorCodeValid = 1;
|
---|
3841 | Event.n.u32ErrorCode = u32ErrCode;
|
---|
3842 |
|
---|
3843 | /* Update CR2 of the guest. */
|
---|
3844 | if (pCtx->cr2 != uFaultAddress)
|
---|
3845 | {
|
---|
3846 | pCtx->cr2 = uFaultAddress;
|
---|
3847 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR2);
|
---|
3848 | }
|
---|
3849 |
|
---|
3850 | hmR0SvmSetPendingEvent(pVCpu, &Event, uFaultAddress);
|
---|
3851 | }
|
---|
3852 |
|
---|
3853 |
|
---|
3854 | /**
|
---|
3855 | * Sets a device-not-available (#NM) exception as pending-for-injection into the
|
---|
3856 | * VM.
|
---|
3857 | *
|
---|
3858 | * @param pVCpu Pointer to the VMCPU.
|
---|
3859 | */
|
---|
3860 | DECLINLINE(void) hmR0SvmSetPendingXcptNM(PVMCPU pVCpu)
|
---|
3861 | {
|
---|
3862 | SVMEVENT Event;
|
---|
3863 | Event.u = 0;
|
---|
3864 | Event.n.u1Valid = 1;
|
---|
3865 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3866 | Event.n.u8Vector = X86_XCPT_NM;
|
---|
3867 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3868 | }
|
---|
3869 |
|
---|
3870 |
|
---|
3871 | /**
|
---|
3872 | * Sets a math-fault (#MF) exception as pending-for-injection into the VM.
|
---|
3873 | *
|
---|
3874 | * @param pVCpu Pointer to the VMCPU.
|
---|
3875 | */
|
---|
3876 | DECLINLINE(void) hmR0SvmSetPendingXcptMF(PVMCPU pVCpu)
|
---|
3877 | {
|
---|
3878 | SVMEVENT Event;
|
---|
3879 | Event.u = 0;
|
---|
3880 | Event.n.u1Valid = 1;
|
---|
3881 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3882 | Event.n.u8Vector = X86_XCPT_MF;
|
---|
3883 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3884 | }
|
---|
3885 |
|
---|
3886 |
|
---|
3887 | /**
|
---|
3888 | * Sets a double fault (#DF) exception as pending-for-injection into the VM.
|
---|
3889 | *
|
---|
3890 | * @param pVCpu Pointer to the VMCPU.
|
---|
3891 | */
|
---|
3892 | DECLINLINE(void) hmR0SvmSetPendingXcptDF(PVMCPU pVCpu)
|
---|
3893 | {
|
---|
3894 | SVMEVENT Event;
|
---|
3895 | Event.u = 0;
|
---|
3896 | Event.n.u1Valid = 1;
|
---|
3897 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3898 | Event.n.u8Vector = X86_XCPT_DF;
|
---|
3899 | Event.n.u1ErrorCodeValid = 1;
|
---|
3900 | Event.n.u32ErrorCode = 0;
|
---|
3901 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3902 | }
|
---|
3903 |
|
---|
3904 |
|
---|
3905 | /**
|
---|
3906 | * Emulates a simple MOV TPR (CR8) instruction, used for TPR patching on 32-bit
|
---|
3907 | * guests. This simply looks up the patch record at EIP and does the required.
|
---|
3908 | *
|
---|
3909 | * This VMMCALL is used a fallback mechanism when mov to/from cr8 isn't exactly
|
---|
3910 | * like how we want it to be (e.g. not followed by shr 4 as is usually done for
|
---|
3911 | * TPR). See hmR3ReplaceTprInstr() for the details.
|
---|
3912 | *
|
---|
3913 | * @returns VBox status code.
|
---|
3914 | * @retval VINF_SUCCESS if the access was handled successfully.
|
---|
3915 | * @retval VERR_NOT_FOUND if no patch record for this eip could be found.
|
---|
3916 | * @retval VERR_SVM_UNEXPECTED_PATCH_TYPE if the found patch type is invalid.
|
---|
3917 | *
|
---|
3918 | * @param pVM Pointer to the VM.
|
---|
3919 | * @param pVCpu Pointer to the VMCPU.
|
---|
3920 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3921 | */
|
---|
3922 | static int hmR0SvmEmulateMovTpr(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
3923 | {
|
---|
3924 | Log4(("Emulated VMMCall TPR access replacement at RIP=%RGv\n", pCtx->rip));
|
---|
3925 |
|
---|
3926 | /*
|
---|
3927 | * We do this in a loop as we increment the RIP after a successful emulation
|
---|
3928 | * and the new RIP may be a patched instruction which needs emulation as well.
|
---|
3929 | */
|
---|
3930 | bool fPatchFound = false;
|
---|
3931 | for (;;)
|
---|
3932 | {
|
---|
3933 | bool fPending;
|
---|
3934 | uint8_t u8Tpr;
|
---|
3935 |
|
---|
3936 | PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
|
---|
3937 | if (!pPatch)
|
---|
3938 | break;
|
---|
3939 |
|
---|
3940 | fPatchFound = true;
|
---|
3941 | switch (pPatch->enmType)
|
---|
3942 | {
|
---|
3943 | case HMTPRINSTR_READ:
|
---|
3944 | {
|
---|
3945 | int rc = PDMApicGetTPR(pVCpu, &u8Tpr, &fPending, NULL /* pu8PendingIrq */);
|
---|
3946 | AssertRC(rc);
|
---|
3947 |
|
---|
3948 | rc = DISWriteReg32(CPUMCTX2CORE(pCtx), pPatch->uDstOperand, u8Tpr);
|
---|
3949 | AssertRC(rc);
|
---|
3950 | pCtx->rip += pPatch->cbOp;
|
---|
3951 | break;
|
---|
3952 | }
|
---|
3953 |
|
---|
3954 | case HMTPRINSTR_WRITE_REG:
|
---|
3955 | case HMTPRINSTR_WRITE_IMM:
|
---|
3956 | {
|
---|
3957 | if (pPatch->enmType == HMTPRINSTR_WRITE_REG)
|
---|
3958 | {
|
---|
3959 | uint32_t u32Val;
|
---|
3960 | int rc = DISFetchReg32(CPUMCTX2CORE(pCtx), pPatch->uSrcOperand, &u32Val);
|
---|
3961 | AssertRC(rc);
|
---|
3962 | u8Tpr = u32Val;
|
---|
3963 | }
|
---|
3964 | else
|
---|
3965 | u8Tpr = (uint8_t)pPatch->uSrcOperand;
|
---|
3966 |
|
---|
3967 | int rc2 = PDMApicSetTPR(pVCpu, u8Tpr);
|
---|
3968 | AssertRC(rc2);
|
---|
3969 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
3970 |
|
---|
3971 | pCtx->rip += pPatch->cbOp;
|
---|
3972 | break;
|
---|
3973 | }
|
---|
3974 |
|
---|
3975 | default:
|
---|
3976 | AssertMsgFailed(("Unexpected patch type %d\n", pPatch->enmType));
|
---|
3977 | pVCpu->hm.s.u32HMError = pPatch->enmType;
|
---|
3978 | return VERR_SVM_UNEXPECTED_PATCH_TYPE;
|
---|
3979 | }
|
---|
3980 | }
|
---|
3981 |
|
---|
3982 | if (fPatchFound)
|
---|
3983 | return VINF_SUCCESS;
|
---|
3984 | return VERR_NOT_FOUND;
|
---|
3985 | }
|
---|
3986 |
|
---|
3987 |
|
---|
3988 | /**
|
---|
3989 | * Determines if an exception is a contributory exception. Contributory
|
---|
3990 | * exceptions are ones which can cause double-faults. Page-fault is
|
---|
3991 | * intentionally not included here as it's a conditional contributory exception.
|
---|
3992 | *
|
---|
3993 | * @returns true if the exception is contributory, false otherwise.
|
---|
3994 | * @param uVector The exception vector.
|
---|
3995 | */
|
---|
3996 | DECLINLINE(bool) hmR0SvmIsContributoryXcpt(const uint32_t uVector)
|
---|
3997 | {
|
---|
3998 | switch (uVector)
|
---|
3999 | {
|
---|
4000 | case X86_XCPT_GP:
|
---|
4001 | case X86_XCPT_SS:
|
---|
4002 | case X86_XCPT_NP:
|
---|
4003 | case X86_XCPT_TS:
|
---|
4004 | case X86_XCPT_DE:
|
---|
4005 | return true;
|
---|
4006 | default:
|
---|
4007 | break;
|
---|
4008 | }
|
---|
4009 | return false;
|
---|
4010 | }
|
---|
4011 |
|
---|
4012 |
|
---|
4013 | /**
|
---|
4014 | * Handle a condition that occurred while delivering an event through the guest
|
---|
4015 | * IDT.
|
---|
4016 | *
|
---|
4017 | * @returns VBox status code (informational error codes included).
|
---|
4018 | * @retval VINF_SUCCESS if we should continue handling the #VMEXIT.
|
---|
4019 | * @retval VINF_HM_DOUBLE_FAULT if a #DF condition was detected and we ought to
|
---|
4020 | * continue execution of the guest which will delivery the #DF.
|
---|
4021 | * @retval VINF_EM_RESET if we detected a triple-fault condition.
|
---|
4022 | *
|
---|
4023 | * @param pVCpu Pointer to the VMCPU.
|
---|
4024 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4025 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
4026 | *
|
---|
4027 | * @remarks No-long-jump zone!!!
|
---|
4028 | */
|
---|
4029 | static int hmR0SvmCheckExitDueToEventDelivery(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4030 | {
|
---|
4031 | int rc = VINF_SUCCESS;
|
---|
4032 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
4033 |
|
---|
4034 | /* See AMD spec. 15.7.3 "EXITINFO Pseudo-Code". The EXITINTINFO (if valid) contains the prior exception (IDT vector)
|
---|
4035 | * that was trying to be delivered to the guest which caused a #VMEXIT which was intercepted (Exit vector). */
|
---|
4036 | if (pVmcb->ctrl.ExitIntInfo.n.u1Valid)
|
---|
4037 | {
|
---|
4038 | uint8_t uIdtVector = pVmcb->ctrl.ExitIntInfo.n.u8Vector;
|
---|
4039 |
|
---|
4040 | typedef enum
|
---|
4041 | {
|
---|
4042 | SVMREFLECTXCPT_XCPT, /* Reflect the exception to the guest or for further evaluation by VMM. */
|
---|
4043 | SVMREFLECTXCPT_DF, /* Reflect the exception as a double-fault to the guest. */
|
---|
4044 | SVMREFLECTXCPT_TF, /* Indicate a triple faulted state to the VMM. */
|
---|
4045 | SVMREFLECTXCPT_NONE /* Nothing to reflect. */
|
---|
4046 | } SVMREFLECTXCPT;
|
---|
4047 |
|
---|
4048 | SVMREFLECTXCPT enmReflect = SVMREFLECTXCPT_NONE;
|
---|
4049 | bool fReflectingNmi = false;
|
---|
4050 | if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXCEPTION)
|
---|
4051 | {
|
---|
4052 | if (pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0 <= SVM_EXIT_EXCEPTION_1F)
|
---|
4053 | {
|
---|
4054 | uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0);
|
---|
4055 |
|
---|
4056 | #ifdef VBOX_STRICT
|
---|
4057 | if ( hmR0SvmIsContributoryXcpt(uIdtVector)
|
---|
4058 | && uExitVector == X86_XCPT_PF)
|
---|
4059 | {
|
---|
4060 | Log4(("IDT: Contributory #PF uCR2=%#RX64\n", pVCpu->idCpu, pCtx->cr2));
|
---|
4061 | }
|
---|
4062 | #endif
|
---|
4063 | if ( uExitVector == X86_XCPT_PF
|
---|
4064 | && uIdtVector == X86_XCPT_PF)
|
---|
4065 | {
|
---|
4066 | pSvmTransient->fVectoringDoublePF = true;
|
---|
4067 | Log4(("IDT: Vectoring double #PF uCR2=%#RX64\n", pCtx->cr2));
|
---|
4068 | }
|
---|
4069 | else if ( (pVmcb->ctrl.u32InterceptException & HMSVM_CONTRIBUTORY_XCPT_MASK)
|
---|
4070 | && hmR0SvmIsContributoryXcpt(uExitVector)
|
---|
4071 | && ( hmR0SvmIsContributoryXcpt(uIdtVector)
|
---|
4072 | || uIdtVector == X86_XCPT_PF))
|
---|
4073 | {
|
---|
4074 | enmReflect = SVMREFLECTXCPT_DF;
|
---|
4075 | Log4(("IDT: Pending vectoring #DF %#RX64 uIdtVector=%#x uExitVector=%#x\n", pVCpu->hm.s.Event.u64IntInfo,
|
---|
4076 | uIdtVector, uExitVector));
|
---|
4077 | }
|
---|
4078 | else if (uIdtVector == X86_XCPT_DF)
|
---|
4079 | {
|
---|
4080 | enmReflect = SVMREFLECTXCPT_TF;
|
---|
4081 | Log4(("IDT: Pending vectoring triple-fault %#RX64 uIdtVector=%#x uExitVector=%#x\n",
|
---|
4082 | pVCpu->hm.s.Event.u64IntInfo, uIdtVector, uExitVector));
|
---|
4083 | }
|
---|
4084 | else
|
---|
4085 | enmReflect = SVMREFLECTXCPT_XCPT;
|
---|
4086 | }
|
---|
4087 | else
|
---|
4088 | {
|
---|
4089 | /*
|
---|
4090 | * If event delivery caused an #VMEXIT that is not an exception (e.g. #NPF) then reflect the original
|
---|
4091 | * exception to the guest after handling the #VMEXIT.
|
---|
4092 | */
|
---|
4093 | enmReflect = SVMREFLECTXCPT_XCPT;
|
---|
4094 | }
|
---|
4095 | }
|
---|
4096 | else if ( pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXTERNAL_IRQ
|
---|
4097 | || pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI)
|
---|
4098 | {
|
---|
4099 | enmReflect = SVMREFLECTXCPT_XCPT;
|
---|
4100 | fReflectingNmi = RT_BOOL(pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI);
|
---|
4101 |
|
---|
4102 | if (pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0 <= SVM_EXIT_EXCEPTION_1F)
|
---|
4103 | {
|
---|
4104 | uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0);
|
---|
4105 | if (uExitVector == X86_XCPT_PF)
|
---|
4106 | {
|
---|
4107 | pSvmTransient->fVectoringPF = true;
|
---|
4108 | Log4(("IDT: Vectoring #PF due to Ext-Int/NMI. uCR2=%#RX64\n", pCtx->cr2));
|
---|
4109 | }
|
---|
4110 | }
|
---|
4111 | }
|
---|
4112 | /* else: Ignore software interrupts (INT n) as they reoccur when restarting the instruction. */
|
---|
4113 |
|
---|
4114 | switch (enmReflect)
|
---|
4115 | {
|
---|
4116 | case SVMREFLECTXCPT_XCPT:
|
---|
4117 | {
|
---|
4118 | /* If we are re-injecting the NMI, clear NMI blocking. */
|
---|
4119 | if (fReflectingNmi)
|
---|
4120 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
4121 |
|
---|
4122 | Assert(pVmcb->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT);
|
---|
4123 | hmR0SvmSetPendingEvent(pVCpu, &pVmcb->ctrl.ExitIntInfo, 0 /* GCPtrFaultAddress */);
|
---|
4124 |
|
---|
4125 | /* If uExitVector is #PF, CR2 value will be updated from the VMCB if it's a guest #PF. See hmR0SvmExitXcptPF(). */
|
---|
4126 | Log4(("IDT: Pending vectoring event %#RX64 ErrValid=%RTbool Err=%#RX32\n", pVmcb->ctrl.ExitIntInfo.u,
|
---|
4127 | !!pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid, pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
|
---|
4128 | break;
|
---|
4129 | }
|
---|
4130 |
|
---|
4131 | case SVMREFLECTXCPT_DF:
|
---|
4132 | {
|
---|
4133 | hmR0SvmSetPendingXcptDF(pVCpu);
|
---|
4134 | rc = VINF_HM_DOUBLE_FAULT;
|
---|
4135 | break;
|
---|
4136 | }
|
---|
4137 |
|
---|
4138 | case SVMREFLECTXCPT_TF:
|
---|
4139 | {
|
---|
4140 | rc = VINF_EM_RESET;
|
---|
4141 | break;
|
---|
4142 | }
|
---|
4143 |
|
---|
4144 | default:
|
---|
4145 | Assert(rc == VINF_SUCCESS);
|
---|
4146 | break;
|
---|
4147 | }
|
---|
4148 | }
|
---|
4149 | Assert(rc == VINF_SUCCESS || rc == VINF_HM_DOUBLE_FAULT || rc == VINF_EM_RESET);
|
---|
4150 | NOREF(pCtx);
|
---|
4151 | return rc;
|
---|
4152 | }
|
---|
4153 |
|
---|
4154 |
|
---|
4155 | /**
|
---|
4156 | * Advances the guest RIP in the if the NRIP_SAVE feature is supported by the
|
---|
4157 | * CPU, otherwise advances the RIP by @a cb bytes.
|
---|
4158 | *
|
---|
4159 | * @param pVCpu Pointer to the VMCPU.
|
---|
4160 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4161 | * @param cb RIP increment value in bytes.
|
---|
4162 | *
|
---|
4163 | * @remarks Use this function only from #VMEXIT's where the NRIP value is valid
|
---|
4164 | * when NRIP_SAVE is supported by the CPU!
|
---|
4165 | */
|
---|
4166 | DECLINLINE(void) hmR0SvmUpdateRip(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t cb)
|
---|
4167 | {
|
---|
4168 | if (pVCpu->CTX_SUFF(pVM)->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
|
---|
4169 | {
|
---|
4170 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
4171 | pCtx->rip = pVmcb->ctrl.u64NextRIP;
|
---|
4172 | }
|
---|
4173 | else
|
---|
4174 | pCtx->rip += cb;
|
---|
4175 | }
|
---|
4176 |
|
---|
4177 |
|
---|
4178 | /* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
|
---|
4179 | /* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- #VMEXIT handlers -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
|
---|
4180 | /* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
|
---|
4181 |
|
---|
4182 | /** @name #VMEXIT handlers.
|
---|
4183 | * @{
|
---|
4184 | */
|
---|
4185 |
|
---|
4186 | /**
|
---|
4187 | * #VMEXIT handler for external interrupts, NMIs, FPU assertion freeze and INIT
|
---|
4188 | * signals (SVM_EXIT_INTR, SVM_EXIT_NMI, SVM_EXIT_FERR_FREEZE, SVM_EXIT_INIT).
|
---|
4189 | */
|
---|
4190 | HMSVM_EXIT_DECL hmR0SvmExitIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4191 | {
|
---|
4192 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4193 |
|
---|
4194 | if (pSvmTransient->u64ExitCode == SVM_EXIT_NMI)
|
---|
4195 | STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitHostNmiInGC);
|
---|
4196 | else if (pSvmTransient->u64ExitCode == SVM_EXIT_INTR)
|
---|
4197 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitExtInt);
|
---|
4198 |
|
---|
4199 | /*
|
---|
4200 | * AMD-V has no preemption timer and the generic periodic preemption timer has no way to signal -before- the timer
|
---|
4201 | * fires if the current interrupt is our own timer or a some other host interrupt. We also cannot examine what
|
---|
4202 | * interrupt it is until the host actually take the interrupt.
|
---|
4203 | *
|
---|
4204 | * Going back to executing guest code here unconditionally causes random scheduling problems (observed on an
|
---|
4205 | * AMD Phenom 9850 Quad-Core on Windows 64-bit host).
|
---|
4206 | */
|
---|
4207 | return VINF_EM_RAW_INTERRUPT;
|
---|
4208 | }
|
---|
4209 |
|
---|
4210 |
|
---|
4211 | /**
|
---|
4212 | * #VMEXIT handler for WBINVD (SVM_EXIT_WBINVD). Conditional #VMEXIT.
|
---|
4213 | */
|
---|
4214 | HMSVM_EXIT_DECL hmR0SvmExitWbinvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4215 | {
|
---|
4216 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4217 |
|
---|
4218 | hmR0SvmUpdateRip(pVCpu, pCtx, 2);
|
---|
4219 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWbinvd);
|
---|
4220 | int rc = VINF_SUCCESS;
|
---|
4221 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4222 | return rc;
|
---|
4223 | }
|
---|
4224 |
|
---|
4225 |
|
---|
4226 | /**
|
---|
4227 | * #VMEXIT handler for INVD (SVM_EXIT_INVD). Unconditional #VMEXIT.
|
---|
4228 | */
|
---|
4229 | HMSVM_EXIT_DECL hmR0SvmExitInvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4230 | {
|
---|
4231 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4232 |
|
---|
4233 | hmR0SvmUpdateRip(pVCpu, pCtx, 2);
|
---|
4234 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvd);
|
---|
4235 | int rc = VINF_SUCCESS;
|
---|
4236 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4237 | return rc;
|
---|
4238 | }
|
---|
4239 |
|
---|
4240 |
|
---|
4241 | /**
|
---|
4242 | * #VMEXIT handler for INVD (SVM_EXIT_CPUID). Conditional #VMEXIT.
|
---|
4243 | */
|
---|
4244 | HMSVM_EXIT_DECL hmR0SvmExitCpuid(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4245 | {
|
---|
4246 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4247 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
4248 | int rc = EMInterpretCpuId(pVM, pVCpu, CPUMCTX2CORE(pCtx));
|
---|
4249 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
4250 | {
|
---|
4251 | hmR0SvmUpdateRip(pVCpu, pCtx, 2);
|
---|
4252 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4253 | }
|
---|
4254 | else
|
---|
4255 | {
|
---|
4256 | AssertMsgFailed(("hmR0SvmExitCpuid: EMInterpretCpuId failed with %Rrc\n", rc));
|
---|
4257 | rc = VERR_EM_INTERPRETER;
|
---|
4258 | }
|
---|
4259 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCpuid);
|
---|
4260 | return rc;
|
---|
4261 | }
|
---|
4262 |
|
---|
4263 |
|
---|
4264 | /**
|
---|
4265 | * #VMEXIT handler for RDTSC (SVM_EXIT_RDTSC). Conditional #VMEXIT.
|
---|
4266 | */
|
---|
4267 | HMSVM_EXIT_DECL hmR0SvmExitRdtsc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4268 | {
|
---|
4269 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4270 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
4271 | int rc = EMInterpretRdtsc(pVM, pVCpu, CPUMCTX2CORE(pCtx));
|
---|
4272 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
4273 | {
|
---|
4274 | hmR0SvmUpdateRip(pVCpu, pCtx, 2);
|
---|
4275 | pSvmTransient->fUpdateTscOffsetting = true;
|
---|
4276 |
|
---|
4277 | /* Single step check. */
|
---|
4278 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4279 | }
|
---|
4280 | else
|
---|
4281 | {
|
---|
4282 | AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtsc failed with %Rrc\n", rc));
|
---|
4283 | rc = VERR_EM_INTERPRETER;
|
---|
4284 | }
|
---|
4285 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtsc);
|
---|
4286 | return rc;
|
---|
4287 | }
|
---|
4288 |
|
---|
4289 |
|
---|
4290 | /**
|
---|
4291 | * #VMEXIT handler for RDTSCP (SVM_EXIT_RDTSCP). Conditional #VMEXIT.
|
---|
4292 | */
|
---|
4293 | HMSVM_EXIT_DECL hmR0SvmExitRdtscp(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4294 | {
|
---|
4295 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4296 | int rc = EMInterpretRdtscp(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
|
---|
4297 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
4298 | {
|
---|
4299 | hmR0SvmUpdateRip(pVCpu, pCtx, 3);
|
---|
4300 | pSvmTransient->fUpdateTscOffsetting = true;
|
---|
4301 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4302 | }
|
---|
4303 | else
|
---|
4304 | {
|
---|
4305 | AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtscp failed with %Rrc\n", rc));
|
---|
4306 | rc = VERR_EM_INTERPRETER;
|
---|
4307 | }
|
---|
4308 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtscp);
|
---|
4309 | return rc;
|
---|
4310 | }
|
---|
4311 |
|
---|
4312 |
|
---|
4313 | /**
|
---|
4314 | * #VMEXIT handler for RDPMC (SVM_EXIT_RDPMC). Conditional #VMEXIT.
|
---|
4315 | */
|
---|
4316 | HMSVM_EXIT_DECL hmR0SvmExitRdpmc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4317 | {
|
---|
4318 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4319 | int rc = EMInterpretRdpmc(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
|
---|
4320 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
4321 | {
|
---|
4322 | hmR0SvmUpdateRip(pVCpu, pCtx, 2);
|
---|
4323 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4324 | }
|
---|
4325 | else
|
---|
4326 | {
|
---|
4327 | AssertMsgFailed(("hmR0SvmExitRdpmc: EMInterpretRdpmc failed with %Rrc\n", rc));
|
---|
4328 | rc = VERR_EM_INTERPRETER;
|
---|
4329 | }
|
---|
4330 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdpmc);
|
---|
4331 | return rc;
|
---|
4332 | }
|
---|
4333 |
|
---|
4334 |
|
---|
4335 | /**
|
---|
4336 | * #VMEXIT handler for INVLPG (SVM_EXIT_INVLPG). Conditional #VMEXIT.
|
---|
4337 | */
|
---|
4338 | HMSVM_EXIT_DECL hmR0SvmExitInvlpg(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4339 | {
|
---|
4340 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4341 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
4342 | Assert(!pVM->hm.s.fNestedPaging);
|
---|
4343 |
|
---|
4344 | /** @todo Decode Assist. */
|
---|
4345 | int rc = hmR0SvmInterpretInvlpg(pVM, pVCpu, CPUMCTX2CORE(pCtx)); /* Updates RIP if successful. */
|
---|
4346 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvlpg);
|
---|
4347 | Assert(rc == VINF_SUCCESS || rc == VERR_EM_INTERPRETER);
|
---|
4348 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4349 | return rc;
|
---|
4350 | }
|
---|
4351 |
|
---|
4352 |
|
---|
4353 | /**
|
---|
4354 | * #VMEXIT handler for HLT (SVM_EXIT_HLT). Conditional #VMEXIT.
|
---|
4355 | */
|
---|
4356 | HMSVM_EXIT_DECL hmR0SvmExitHlt(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4357 | {
|
---|
4358 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4359 | hmR0SvmUpdateRip(pVCpu, pCtx, 1);
|
---|
4360 | int rc = EMShouldContinueAfterHalt(pVCpu, pCtx) ? VINF_SUCCESS : VINF_EM_HALT;
|
---|
4361 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4362 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitHlt);
|
---|
4363 | return rc;
|
---|
4364 | }
|
---|
4365 |
|
---|
4366 |
|
---|
4367 | /**
|
---|
4368 | * #VMEXIT handler for MONITOR (SVM_EXIT_MONITOR). Conditional #VMEXIT.
|
---|
4369 | */
|
---|
4370 | HMSVM_EXIT_DECL hmR0SvmExitMonitor(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4371 | {
|
---|
4372 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4373 | int rc = EMInterpretMonitor(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
|
---|
4374 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
4375 | {
|
---|
4376 | hmR0SvmUpdateRip(pVCpu, pCtx, 3);
|
---|
4377 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4378 | }
|
---|
4379 | else
|
---|
4380 | {
|
---|
4381 | AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMonitor: EMInterpretMonitor failed with %Rrc\n", rc));
|
---|
4382 | rc = VERR_EM_INTERPRETER;
|
---|
4383 | }
|
---|
4384 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMonitor);
|
---|
4385 | return rc;
|
---|
4386 | }
|
---|
4387 |
|
---|
4388 |
|
---|
4389 | /**
|
---|
4390 | * #VMEXIT handler for MWAIT (SVM_EXIT_MWAIT). Conditional #VMEXIT.
|
---|
4391 | */
|
---|
4392 | HMSVM_EXIT_DECL hmR0SvmExitMwait(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4393 | {
|
---|
4394 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4395 | VBOXSTRICTRC rc2 = EMInterpretMWait(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
|
---|
4396 | int rc = VBOXSTRICTRC_VAL(rc2);
|
---|
4397 | if ( rc == VINF_EM_HALT
|
---|
4398 | || rc == VINF_SUCCESS)
|
---|
4399 | {
|
---|
4400 | hmR0SvmUpdateRip(pVCpu, pCtx, 3);
|
---|
4401 |
|
---|
4402 | if ( rc == VINF_EM_HALT
|
---|
4403 | && EMMonitorWaitShouldContinue(pVCpu, pCtx))
|
---|
4404 | {
|
---|
4405 | rc = VINF_SUCCESS;
|
---|
4406 | }
|
---|
4407 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4408 | }
|
---|
4409 | else
|
---|
4410 | {
|
---|
4411 | AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMwait: EMInterpretMWait failed with %Rrc\n", rc));
|
---|
4412 | rc = VERR_EM_INTERPRETER;
|
---|
4413 | }
|
---|
4414 | AssertMsg(rc == VINF_SUCCESS || rc == VINF_EM_HALT || rc == VERR_EM_INTERPRETER,
|
---|
4415 | ("hmR0SvmExitMwait: EMInterpretMWait failed rc=%Rrc\n", rc));
|
---|
4416 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMwait);
|
---|
4417 | return rc;
|
---|
4418 | }
|
---|
4419 |
|
---|
4420 |
|
---|
4421 | /**
|
---|
4422 | * #VMEXIT handler for shutdown (triple-fault) (SVM_EXIT_SHUTDOWN).
|
---|
4423 | * Conditional #VMEXIT.
|
---|
4424 | */
|
---|
4425 | HMSVM_EXIT_DECL hmR0SvmExitShutdown(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4426 | {
|
---|
4427 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4428 | return VINF_EM_RESET;
|
---|
4429 | }
|
---|
4430 |
|
---|
4431 |
|
---|
4432 | /**
|
---|
4433 | * #VMEXIT handler for CRx reads (SVM_EXIT_READ_CR*). Conditional #VMEXIT.
|
---|
4434 | */
|
---|
4435 | HMSVM_EXIT_DECL hmR0SvmExitReadCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4436 | {
|
---|
4437 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4438 |
|
---|
4439 | Log4(("hmR0SvmExitReadCRx: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
|
---|
4440 |
|
---|
4441 | /** @todo Decode Assist. */
|
---|
4442 | VBOXSTRICTRC rc2 = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
|
---|
4443 | int rc = VBOXSTRICTRC_VAL(rc2);
|
---|
4444 | AssertMsg(rc == VINF_SUCCESS || rc == VERR_EM_INTERPRETER || rc == VINF_PGM_CHANGE_MODE || rc == VINF_PGM_SYNC_CR3,
|
---|
4445 | ("hmR0SvmExitReadCRx: EMInterpretInstruction failed rc=%Rrc\n", rc));
|
---|
4446 | Assert((pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0) <= 15);
|
---|
4447 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCRxRead[pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0]);
|
---|
4448 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4449 | return rc;
|
---|
4450 | }
|
---|
4451 |
|
---|
4452 |
|
---|
4453 | /**
|
---|
4454 | * #VMEXIT handler for CRx writes (SVM_EXIT_WRITE_CR*). Conditional #VMEXIT.
|
---|
4455 | */
|
---|
4456 | HMSVM_EXIT_DECL hmR0SvmExitWriteCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4457 | {
|
---|
4458 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4459 | /** @todo Decode Assist. */
|
---|
4460 | VBOXSTRICTRC rc2 = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
|
---|
4461 | int rc = VBOXSTRICTRC_VAL(rc2);
|
---|
4462 | if (rc == VINF_SUCCESS)
|
---|
4463 | {
|
---|
4464 | /* RIP has been updated by EMInterpretInstruction(). */
|
---|
4465 | Assert((pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0) <= 15);
|
---|
4466 | switch (pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0)
|
---|
4467 | {
|
---|
4468 | case 0: /* CR0. */
|
---|
4469 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
4470 | break;
|
---|
4471 |
|
---|
4472 | case 3: /* CR3. */
|
---|
4473 | Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
|
---|
4474 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR3);
|
---|
4475 | break;
|
---|
4476 |
|
---|
4477 | case 4: /* CR4. */
|
---|
4478 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR4);
|
---|
4479 | break;
|
---|
4480 |
|
---|
4481 | case 8: /* CR8 (TPR). */
|
---|
4482 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
4483 | break;
|
---|
4484 |
|
---|
4485 | default:
|
---|
4486 | AssertMsgFailed(("hmR0SvmExitWriteCRx: Invalid/Unexpected Write-CRx exit. u64ExitCode=%#RX64 %#x CRx=%#RX64\n",
|
---|
4487 | pSvmTransient->u64ExitCode, pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0));
|
---|
4488 | break;
|
---|
4489 | }
|
---|
4490 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4491 | }
|
---|
4492 | else
|
---|
4493 | Assert(rc == VERR_EM_INTERPRETER || rc == VINF_PGM_CHANGE_MODE || rc == VINF_PGM_SYNC_CR3);
|
---|
4494 | return rc;
|
---|
4495 | }
|
---|
4496 |
|
---|
4497 |
|
---|
4498 | /**
|
---|
4499 | * #VMEXIT handler for instructions that result in a #UD exception delivered to
|
---|
4500 | * the guest.
|
---|
4501 | */
|
---|
4502 | HMSVM_EXIT_DECL hmR0SvmExitSetPendingXcptUD(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4503 | {
|
---|
4504 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4505 | hmR0SvmSetPendingXcptUD(pVCpu);
|
---|
4506 | return VINF_SUCCESS;
|
---|
4507 | }
|
---|
4508 |
|
---|
4509 |
|
---|
4510 | /**
|
---|
4511 | * #VMEXIT handler for MSR read and writes (SVM_EXIT_MSR). Conditional #VMEXIT.
|
---|
4512 | */
|
---|
4513 | HMSVM_EXIT_DECL hmR0SvmExitMsr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4514 | {
|
---|
4515 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4516 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
4517 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
4518 |
|
---|
4519 | int rc;
|
---|
4520 | if (pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_WRITE)
|
---|
4521 | {
|
---|
4522 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWrmsr);
|
---|
4523 |
|
---|
4524 | /* Handle TPR patching; intercepted LSTAR write. */
|
---|
4525 | if ( pVM->hm.s.fTPRPatchingActive
|
---|
4526 | && pCtx->ecx == MSR_K8_LSTAR)
|
---|
4527 | {
|
---|
4528 | if ((pCtx->eax & 0xff) != pSvmTransient->u8GuestTpr)
|
---|
4529 | {
|
---|
4530 | /* Our patch code uses LSTAR for TPR caching for 32-bit guests. */
|
---|
4531 | int rc2 = PDMApicSetTPR(pVCpu, pCtx->eax & 0xff);
|
---|
4532 | AssertRC(rc2);
|
---|
4533 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
4534 | }
|
---|
4535 | hmR0SvmUpdateRip(pVCpu, pCtx, 2);
|
---|
4536 | rc = VINF_SUCCESS;
|
---|
4537 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4538 | return rc;
|
---|
4539 | }
|
---|
4540 |
|
---|
4541 | if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
|
---|
4542 | {
|
---|
4543 | rc = EMInterpretWrmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
|
---|
4544 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
4545 | {
|
---|
4546 | pCtx->rip = pVmcb->ctrl.u64NextRIP;
|
---|
4547 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4548 | }
|
---|
4549 | else
|
---|
4550 | AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMsr: EMInterpretWrmsr failed rc=%Rrc\n", rc));
|
---|
4551 | }
|
---|
4552 | else
|
---|
4553 | {
|
---|
4554 | rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */));
|
---|
4555 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
4556 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc); /* RIP updated by EMInterpretInstruction(). */
|
---|
4557 | else
|
---|
4558 | AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMsr: WrMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
|
---|
4559 | }
|
---|
4560 |
|
---|
4561 | if (rc == VINF_SUCCESS)
|
---|
4562 | {
|
---|
4563 | /* If this is an X2APIC WRMSR access, update the APIC state as well. */
|
---|
4564 | if ( pCtx->ecx >= MSR_IA32_X2APIC_START
|
---|
4565 | && pCtx->ecx <= MSR_IA32_X2APIC_END)
|
---|
4566 | {
|
---|
4567 | /*
|
---|
4568 | * We've already saved the APIC related guest-state (TPR) in hmR0SvmPostRunGuest(). When full APIC register
|
---|
4569 | * virtualization is implemented we'll have to make sure APIC state is saved from the VMCB before
|
---|
4570 | * EMInterpretWrmsr() changes it.
|
---|
4571 | */
|
---|
4572 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
4573 | }
|
---|
4574 | else if (pCtx->ecx == MSR_K6_EFER)
|
---|
4575 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_EFER_MSR);
|
---|
4576 | else if (pCtx->ecx == MSR_IA32_TSC)
|
---|
4577 | pSvmTransient->fUpdateTscOffsetting = true;
|
---|
4578 | }
|
---|
4579 | }
|
---|
4580 | else
|
---|
4581 | {
|
---|
4582 | /* MSR Read access. */
|
---|
4583 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdmsr);
|
---|
4584 | Assert(pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_READ);
|
---|
4585 |
|
---|
4586 | if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
|
---|
4587 | {
|
---|
4588 | rc = EMInterpretRdmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
|
---|
4589 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
4590 | {
|
---|
4591 | pCtx->rip = pVmcb->ctrl.u64NextRIP;
|
---|
4592 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4593 | }
|
---|
4594 | else
|
---|
4595 | AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMsr: EMInterpretRdmsr failed rc=%Rrc\n", rc));
|
---|
4596 | }
|
---|
4597 | else
|
---|
4598 | {
|
---|
4599 | rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0));
|
---|
4600 | if (RT_UNLIKELY(rc != VINF_SUCCESS))
|
---|
4601 | AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMsr: RdMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
|
---|
4602 | /* RIP updated by EMInterpretInstruction(). */
|
---|
4603 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4604 | }
|
---|
4605 | }
|
---|
4606 |
|
---|
4607 | /* RIP has been updated by EMInterpret[Rd|Wr]msr(). */
|
---|
4608 | return rc;
|
---|
4609 | }
|
---|
4610 |
|
---|
4611 |
|
---|
4612 | /**
|
---|
4613 | * #VMEXIT handler for DRx read (SVM_EXIT_READ_DRx). Conditional #VMEXIT.
|
---|
4614 | */
|
---|
4615 | HMSVM_EXIT_DECL hmR0SvmExitReadDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4616 | {
|
---|
4617 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4618 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxRead);
|
---|
4619 |
|
---|
4620 | /* We should -not- get this #VMEXIT if the guest's debug registers were active. */
|
---|
4621 | if (pSvmTransient->fWasGuestDebugStateActive)
|
---|
4622 | {
|
---|
4623 | AssertMsgFailed(("hmR0SvmHandleExit: Unexpected exit %#RX32\n", (uint32_t)pSvmTransient->u64ExitCode));
|
---|
4624 | pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
|
---|
4625 | return VERR_SVM_UNEXPECTED_EXIT;
|
---|
4626 | }
|
---|
4627 |
|
---|
4628 | /*
|
---|
4629 | * Lazy DR0-3 loading.
|
---|
4630 | */
|
---|
4631 | if (!pSvmTransient->fWasHyperDebugStateActive)
|
---|
4632 | {
|
---|
4633 | Assert(!DBGFIsStepping(pVCpu)); Assert(!pVCpu->hm.s.fSingleInstruction);
|
---|
4634 | Log5(("hmR0SvmExitReadDRx: Lazy loading guest debug registers\n"));
|
---|
4635 |
|
---|
4636 | /* Don't intercept DRx read and writes. */
|
---|
4637 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
4638 | pVmcb->ctrl.u16InterceptRdDRx = 0;
|
---|
4639 | pVmcb->ctrl.u16InterceptWrDRx = 0;
|
---|
4640 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
4641 |
|
---|
4642 | /* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
|
---|
4643 | VMMRZCallRing3Disable(pVCpu);
|
---|
4644 | HM_DISABLE_PREEMPT_IF_NEEDED();
|
---|
4645 |
|
---|
4646 | /* Save the host & load the guest debug state, restart execution of the MOV DRx instruction. */
|
---|
4647 | CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
|
---|
4648 | Assert(CPUMIsGuestDebugStateActive(pVCpu) || HC_ARCH_BITS == 32);
|
---|
4649 |
|
---|
4650 | HM_RESTORE_PREEMPT_IF_NEEDED();
|
---|
4651 | VMMRZCallRing3Enable(pVCpu);
|
---|
4652 |
|
---|
4653 | STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxContextSwitch);
|
---|
4654 | return VINF_SUCCESS;
|
---|
4655 | }
|
---|
4656 |
|
---|
4657 | /*
|
---|
4658 | * Interpret the read/writing of DRx.
|
---|
4659 | */
|
---|
4660 | /** @todo Decode assist. */
|
---|
4661 | VBOXSTRICTRC rc = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
|
---|
4662 | Log5(("hmR0SvmExitReadDRx: Emulated DRx access: rc=%Rrc\n", VBOXSTRICTRC_VAL(rc)));
|
---|
4663 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
4664 | {
|
---|
4665 | /* Not necessary for read accesses but whatever doesn't hurt for now, will be fixed with decode assist. */
|
---|
4666 | /** @todo CPUM should set this flag! */
|
---|
4667 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);
|
---|
4668 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
4669 | }
|
---|
4670 | else
|
---|
4671 | Assert(rc == VERR_EM_INTERPRETER);
|
---|
4672 | return VBOXSTRICTRC_TODO(rc);
|
---|
4673 | }
|
---|
4674 |
|
---|
4675 |
|
---|
4676 | /**
|
---|
4677 | * #VMEXIT handler for DRx write (SVM_EXIT_WRITE_DRx). Conditional #VMEXIT.
|
---|
4678 | */
|
---|
4679 | HMSVM_EXIT_DECL hmR0SvmExitWriteDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4680 | {
|
---|
4681 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4682 | /* For now it's the same since we interpret the instruction anyway. Will change when using of Decode Assist is implemented. */
|
---|
4683 | int rc = hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
|
---|
4684 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxWrite);
|
---|
4685 | STAM_COUNTER_DEC(&pVCpu->hm.s.StatExitDRxRead);
|
---|
4686 | return rc;
|
---|
4687 | }
|
---|
4688 |
|
---|
4689 |
|
---|
4690 | /**
|
---|
4691 | * #VMEXIT handler for I/O instructions (SVM_EXIT_IOIO). Conditional #VMEXIT.
|
---|
4692 | */
|
---|
4693 | HMSVM_EXIT_DECL hmR0SvmExitIOInstr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4694 | {
|
---|
4695 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4696 |
|
---|
4697 | /* I/O operation lookup arrays. */
|
---|
4698 | static uint32_t const s_aIOSize[8] = { 0, 1, 2, 0, 4, 0, 0, 0 }; /* Size of the I/O accesses in bytes. */
|
---|
4699 | static uint32_t const s_aIOOpAnd[8] = { 0, 0xff, 0xffff, 0, 0xffffffff, 0, 0, 0 }; /* AND masks for saving
|
---|
4700 | the result (in AL/AX/EAX). */
|
---|
4701 | Log4(("hmR0SvmExitIOInstr: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
|
---|
4702 |
|
---|
4703 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
4704 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
4705 |
|
---|
4706 | /* Refer AMD spec. 15.10.2 "IN and OUT Behaviour" and Figure 15-2. "EXITINFO1 for IOIO Intercept" for the format. */
|
---|
4707 | SVMIOIOEXIT IoExitInfo;
|
---|
4708 | IoExitInfo.u = (uint32_t)pVmcb->ctrl.u64ExitInfo1;
|
---|
4709 | uint32_t uIOWidth = (IoExitInfo.u >> 4) & 0x7;
|
---|
4710 | uint32_t cbValue = s_aIOSize[uIOWidth];
|
---|
4711 | uint32_t uAndVal = s_aIOOpAnd[uIOWidth];
|
---|
4712 |
|
---|
4713 | if (RT_UNLIKELY(!cbValue))
|
---|
4714 | {
|
---|
4715 | AssertMsgFailed(("hmR0SvmExitIOInstr: Invalid IO operation. uIOWidth=%u\n", uIOWidth));
|
---|
4716 | return VERR_EM_INTERPRETER;
|
---|
4717 | }
|
---|
4718 |
|
---|
4719 | VBOXSTRICTRC rcStrict;
|
---|
4720 | if (IoExitInfo.n.u1STR)
|
---|
4721 | {
|
---|
4722 | /* INS/OUTS - I/O String instruction. */
|
---|
4723 | PDISCPUSTATE pDis = &pVCpu->hm.s.DisState;
|
---|
4724 |
|
---|
4725 | /** @todo Huh? why can't we use the segment prefix information given by AMD-V
|
---|
4726 | * in EXITINFO1? Investigate once this thing is up and running. */
|
---|
4727 |
|
---|
4728 | rcStrict = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL);
|
---|
4729 | if (rcStrict == VINF_SUCCESS)
|
---|
4730 | {
|
---|
4731 | if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
|
---|
4732 | {
|
---|
4733 | rcStrict = IOMInterpretOUTSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
|
---|
4734 | (DISCPUMODE)pDis->uAddrMode, cbValue);
|
---|
4735 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringWrite);
|
---|
4736 | }
|
---|
4737 | else
|
---|
4738 | {
|
---|
4739 | rcStrict = IOMInterpretINSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
|
---|
4740 | (DISCPUMODE)pDis->uAddrMode, cbValue);
|
---|
4741 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringRead);
|
---|
4742 | }
|
---|
4743 | }
|
---|
4744 | else
|
---|
4745 | rcStrict = VINF_EM_RAW_EMULATE_INSTR;
|
---|
4746 | }
|
---|
4747 | else
|
---|
4748 | {
|
---|
4749 | /* IN/OUT - I/O instruction. */
|
---|
4750 | Assert(!IoExitInfo.n.u1REP);
|
---|
4751 |
|
---|
4752 | if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
|
---|
4753 | {
|
---|
4754 | rcStrict = IOMIOPortWrite(pVM, pVCpu, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, cbValue);
|
---|
4755 | if (rcStrict == VINF_IOM_R3_IOPORT_WRITE)
|
---|
4756 | HMR0SavePendingIOPortWrite(pVCpu, pCtx->rip, pVmcb->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port, uAndVal, cbValue);
|
---|
4757 |
|
---|
4758 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOWrite);
|
---|
4759 | }
|
---|
4760 | else
|
---|
4761 | {
|
---|
4762 | uint32_t u32Val = 0;
|
---|
4763 |
|
---|
4764 | rcStrict = IOMIOPortRead(pVM, pVCpu, IoExitInfo.n.u16Port, &u32Val, cbValue);
|
---|
4765 | if (IOM_SUCCESS(rcStrict))
|
---|
4766 | {
|
---|
4767 | /* Save result of I/O IN instr. in AL/AX/EAX. */
|
---|
4768 | pCtx->eax = (pCtx->eax & ~uAndVal) | (u32Val & uAndVal);
|
---|
4769 | }
|
---|
4770 | else if (rcStrict == VINF_IOM_R3_IOPORT_READ)
|
---|
4771 | HMR0SavePendingIOPortRead(pVCpu, pCtx->rip, pVmcb->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port, uAndVal, cbValue);
|
---|
4772 |
|
---|
4773 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIORead);
|
---|
4774 | }
|
---|
4775 | }
|
---|
4776 |
|
---|
4777 | if (IOM_SUCCESS(rcStrict))
|
---|
4778 | {
|
---|
4779 | /* AMD-V saves the RIP of the instruction following the IO instruction in EXITINFO2. */
|
---|
4780 | pCtx->rip = pVmcb->ctrl.u64ExitInfo2;
|
---|
4781 |
|
---|
4782 | /*
|
---|
4783 | * If any I/O breakpoints are armed, we need to check if one triggered
|
---|
4784 | * and take appropriate action.
|
---|
4785 | * Note that the I/O breakpoint type is undefined if CR4.DE is 0.
|
---|
4786 | */
|
---|
4787 | /** @todo Optimize away the DBGFBpIsHwIoArmed call by having DBGF tell the
|
---|
4788 | * execution engines about whether hyper BPs and such are pending. */
|
---|
4789 | uint32_t const uDr7 = pCtx->dr[7];
|
---|
4790 | if (RT_UNLIKELY( ( (uDr7 & X86_DR7_ENABLED_MASK)
|
---|
4791 | && X86_DR7_ANY_RW_IO(uDr7)
|
---|
4792 | && (pCtx->cr4 & X86_CR4_DE))
|
---|
4793 | || DBGFBpIsHwIoArmed(pVM)))
|
---|
4794 | {
|
---|
4795 | /* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
|
---|
4796 | VMMRZCallRing3Disable(pVCpu);
|
---|
4797 | HM_DISABLE_PREEMPT_IF_NEEDED();
|
---|
4798 |
|
---|
4799 | STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxIoCheck);
|
---|
4800 | CPUMR0DebugStateMaybeSaveGuest(pVCpu, false /*fDr6*/);
|
---|
4801 |
|
---|
4802 | VBOXSTRICTRC rcStrict2 = DBGFBpCheckIo(pVM, pVCpu, pCtx, IoExitInfo.n.u16Port, cbValue);
|
---|
4803 | if (rcStrict2 == VINF_EM_RAW_GUEST_TRAP)
|
---|
4804 | {
|
---|
4805 | /* Raise #DB. */
|
---|
4806 | pVmcb->guest.u64DR6 = pCtx->dr[6];
|
---|
4807 | pVmcb->guest.u64DR7 = pCtx->dr[7];
|
---|
4808 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
|
---|
4809 | hmR0SvmSetPendingXcptDB(pVCpu);
|
---|
4810 | }
|
---|
4811 | /* rcStrict is VINF_SUCCESS or in [VINF_EM_FIRST..VINF_EM_LAST]. */
|
---|
4812 | else if ( rcStrict2 != VINF_SUCCESS
|
---|
4813 | && (rcStrict == VINF_SUCCESS || rcStrict2 < rcStrict))
|
---|
4814 | rcStrict = rcStrict2;
|
---|
4815 |
|
---|
4816 | HM_RESTORE_PREEMPT_IF_NEEDED();
|
---|
4817 | VMMRZCallRing3Enable(pVCpu);
|
---|
4818 | }
|
---|
4819 |
|
---|
4820 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
|
---|
4821 | }
|
---|
4822 |
|
---|
4823 | #ifdef VBOX_STRICT
|
---|
4824 | if (rcStrict == VINF_IOM_R3_IOPORT_READ)
|
---|
4825 | Assert(IoExitInfo.n.u1Type == SVM_IOIO_READ);
|
---|
4826 | else if (rcStrict == VINF_IOM_R3_IOPORT_WRITE)
|
---|
4827 | Assert(IoExitInfo.n.u1Type == SVM_IOIO_WRITE);
|
---|
4828 | else
|
---|
4829 | {
|
---|
4830 | /** @todo r=bird: This is missing a bunch of VINF_EM_FIRST..VINF_EM_LAST
|
---|
4831 | * statuses, that the VMM device and some others may return. See
|
---|
4832 | * IOM_SUCCESS() for guidance. */
|
---|
4833 | AssertMsg( RT_FAILURE(rcStrict)
|
---|
4834 | || rcStrict == VINF_SUCCESS
|
---|
4835 | || rcStrict == VINF_EM_RAW_EMULATE_INSTR
|
---|
4836 | || rcStrict == VINF_EM_DBG_BREAKPOINT
|
---|
4837 | || rcStrict == VINF_EM_RAW_GUEST_TRAP
|
---|
4838 | || rcStrict == VINF_TRPM_XCPT_DISPATCHED, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
|
---|
4839 | }
|
---|
4840 | #endif
|
---|
4841 | return VBOXSTRICTRC_TODO(rcStrict);
|
---|
4842 | }
|
---|
4843 |
|
---|
4844 |
|
---|
4845 | /**
|
---|
4846 | * #VMEXIT handler for Nested Page-faults (SVM_EXIT_NPF). Conditional
|
---|
4847 | * #VMEXIT.
|
---|
4848 | */
|
---|
4849 | HMSVM_EXIT_DECL hmR0SvmExitNestedPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4850 | {
|
---|
4851 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4852 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
4853 | Assert(pVM->hm.s.fNestedPaging);
|
---|
4854 |
|
---|
4855 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
4856 |
|
---|
4857 | /* See AMD spec. 15.25.6 "Nested versus Guest Page Faults, Fault Ordering" for VMCB details for #NPF. */
|
---|
4858 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
4859 | uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
|
---|
4860 | RTGCPHYS GCPhysFaultAddr = pVmcb->ctrl.u64ExitInfo2;
|
---|
4861 |
|
---|
4862 | Log4(("#NPF at CS:RIP=%04x:%#RX64 faultaddr=%RGp errcode=%#x \n", pCtx->cs.Sel, pCtx->rip, GCPhysFaultAddr, u32ErrCode));
|
---|
4863 |
|
---|
4864 | #ifdef VBOX_HM_WITH_GUEST_PATCHING
|
---|
4865 | /* TPR patching for 32-bit guests, using the reserved bit in the page tables for MMIO regions. */
|
---|
4866 | if ( pVM->hm.s.fTprPatchingAllowed
|
---|
4867 | && (GCPhysFaultAddr & PAGE_OFFSET_MASK) == 0x80 /* TPR offset. */
|
---|
4868 | && ( !(u32ErrCode & X86_TRAP_PF_P) /* Not present */
|
---|
4869 | || (u32ErrCode & (X86_TRAP_PF_P | X86_TRAP_PF_RSVD)) == (X86_TRAP_PF_P | X86_TRAP_PF_RSVD)) /* MMIO page. */
|
---|
4870 | && !CPUMIsGuestInLongModeEx(pCtx)
|
---|
4871 | && !CPUMGetGuestCPL(pVCpu)
|
---|
4872 | && pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
|
---|
4873 | {
|
---|
4874 | RTGCPHYS GCPhysApicBase = pCtx->msrApicBase;
|
---|
4875 | GCPhysApicBase &= PAGE_BASE_GC_MASK;
|
---|
4876 |
|
---|
4877 | if (GCPhysFaultAddr == GCPhysApicBase + 0x80)
|
---|
4878 | {
|
---|
4879 | /* Only attempt to patch the instruction once. */
|
---|
4880 | PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
|
---|
4881 | if (!pPatch)
|
---|
4882 | return VINF_EM_HM_PATCH_TPR_INSTR;
|
---|
4883 | }
|
---|
4884 | }
|
---|
4885 | #endif
|
---|
4886 |
|
---|
4887 | /*
|
---|
4888 | * Determine the nested paging mode.
|
---|
4889 | */
|
---|
4890 | PGMMODE enmNestedPagingMode;
|
---|
4891 | #if HC_ARCH_BITS == 32
|
---|
4892 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
4893 | enmNestedPagingMode = PGMMODE_AMD64_NX;
|
---|
4894 | else
|
---|
4895 | #endif
|
---|
4896 | enmNestedPagingMode = PGMGetHostMode(pVM);
|
---|
4897 |
|
---|
4898 | /*
|
---|
4899 | * MMIO optimization using the reserved (RSVD) bit in the guest page tables for MMIO pages.
|
---|
4900 | */
|
---|
4901 | int rc;
|
---|
4902 | Assert((u32ErrCode & (X86_TRAP_PF_RSVD | X86_TRAP_PF_P)) != X86_TRAP_PF_RSVD);
|
---|
4903 | if ((u32ErrCode & (X86_TRAP_PF_RSVD | X86_TRAP_PF_P)) == (X86_TRAP_PF_RSVD | X86_TRAP_PF_P))
|
---|
4904 | {
|
---|
4905 | VBOXSTRICTRC rc2 = PGMR0Trap0eHandlerNPMisconfig(pVM, pVCpu, enmNestedPagingMode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr,
|
---|
4906 | u32ErrCode);
|
---|
4907 | rc = VBOXSTRICTRC_VAL(rc2);
|
---|
4908 |
|
---|
4909 | /*
|
---|
4910 | * If we succeed, resume guest execution.
|
---|
4911 | * If we fail in interpreting the instruction because we couldn't get the guest physical address
|
---|
4912 | * of the page containing the instruction via the guest's page tables (we would invalidate the guest page
|
---|
4913 | * in the host TLB), resume execution which would cause a guest page fault to let the guest handle this
|
---|
4914 | * weird case. See @bugref{6043}.
|
---|
4915 | */
|
---|
4916 | if ( rc == VINF_SUCCESS
|
---|
4917 | || rc == VERR_PAGE_TABLE_NOT_PRESENT
|
---|
4918 | || rc == VERR_PAGE_NOT_PRESENT)
|
---|
4919 | {
|
---|
4920 | /* Successfully handled MMIO operation. */
|
---|
4921 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
4922 | rc = VINF_SUCCESS;
|
---|
4923 | }
|
---|
4924 | return rc;
|
---|
4925 | }
|
---|
4926 |
|
---|
4927 | TRPMAssertXcptPF(pVCpu, GCPhysFaultAddr, u32ErrCode);
|
---|
4928 | rc = PGMR0Trap0eHandlerNestedPaging(pVM, pVCpu, enmNestedPagingMode, u32ErrCode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr);
|
---|
4929 | TRPMResetTrap(pVCpu);
|
---|
4930 |
|
---|
4931 | Log4(("#NPF: PGMR0Trap0eHandlerNestedPaging returned %Rrc CS:RIP=%04x:%#RX64\n", rc, pCtx->cs.Sel, pCtx->rip));
|
---|
4932 |
|
---|
4933 | /*
|
---|
4934 | * Same case as PGMR0Trap0eHandlerNPMisconfig(). See comment above, @bugref{6043}.
|
---|
4935 | */
|
---|
4936 | if ( rc == VINF_SUCCESS
|
---|
4937 | || rc == VERR_PAGE_TABLE_NOT_PRESENT
|
---|
4938 | || rc == VERR_PAGE_NOT_PRESENT)
|
---|
4939 | {
|
---|
4940 | /* We've successfully synced our shadow page tables. */
|
---|
4941 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
|
---|
4942 | rc = VINF_SUCCESS;
|
---|
4943 | }
|
---|
4944 |
|
---|
4945 | return rc;
|
---|
4946 | }
|
---|
4947 |
|
---|
4948 |
|
---|
4949 | /**
|
---|
4950 | * #VMEXIT handler for virtual interrupt (SVM_EXIT_VINTR). Conditional #VMEXIT.
|
---|
4951 | */
|
---|
4952 | HMSVM_EXIT_DECL hmR0SvmExitVIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4953 | {
|
---|
4954 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4955 |
|
---|
4956 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
4957 | pVmcb->ctrl.IntCtrl.n.u1VIrqValid = 0; /* No virtual interrupts pending, we'll inject the current one/NMI before reentry. */
|
---|
4958 | pVmcb->ctrl.IntCtrl.n.u8VIrqVector = 0;
|
---|
4959 |
|
---|
4960 | /* Indicate that we no longer need to #VMEXIT when the guest is ready to receive interrupts/NMIs, it is now ready. */
|
---|
4961 | pVmcb->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_VINTR;
|
---|
4962 | pVmcb->ctrl.u64VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS | HMSVM_VMCB_CLEAN_TPR);
|
---|
4963 |
|
---|
4964 | /* Deliver the pending interrupt/NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
|
---|
4965 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIntWindow);
|
---|
4966 | return VINF_SUCCESS;
|
---|
4967 | }
|
---|
4968 |
|
---|
4969 |
|
---|
4970 | /**
|
---|
4971 | * #VMEXIT handler for task switches (SVM_EXIT_TASK_SWITCH). Conditional #VMEXIT.
|
---|
4972 | */
|
---|
4973 | HMSVM_EXIT_DECL hmR0SvmExitTaskSwitch(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4974 | {
|
---|
4975 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
4976 |
|
---|
4977 | #ifndef HMSVM_ALWAYS_TRAP_TASK_SWITCH
|
---|
4978 | Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
|
---|
4979 | #endif
|
---|
4980 |
|
---|
4981 | /* Check if this task-switch occurred while delivery an event through the guest IDT. */
|
---|
4982 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
4983 | if ( !(pVmcb->ctrl.u64ExitInfo2 & (SVM_EXIT2_TASK_SWITCH_IRET | SVM_EXIT2_TASK_SWITCH_JMP))
|
---|
4984 | && pVCpu->hm.s.Event.fPending) /** @todo fPending cannot be 'true', see hmR0SvmInjectPendingEvent(). See @bugref{7362}.*/
|
---|
4985 | {
|
---|
4986 | /*
|
---|
4987 | * AMD-V does not provide us with the original exception but we have it in u64IntInfo since we
|
---|
4988 | * injected the event during VM-entry.
|
---|
4989 | */
|
---|
4990 | Log4(("hmR0SvmExitTaskSwitch: TS occurred during event delivery.\n"));
|
---|
4991 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
|
---|
4992 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
4993 | }
|
---|
4994 |
|
---|
4995 | /** @todo Emulate task switch someday, currently just going back to ring-3 for
|
---|
4996 | * emulation. */
|
---|
4997 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
|
---|
4998 | return VERR_EM_INTERPRETER;
|
---|
4999 | }
|
---|
5000 |
|
---|
5001 |
|
---|
5002 | /**
|
---|
5003 | * #VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional #VMEXIT.
|
---|
5004 | */
|
---|
5005 | HMSVM_EXIT_DECL hmR0SvmExitVmmCall(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
5006 | {
|
---|
5007 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
5008 |
|
---|
5009 | /* First check if this is a patched VMMCALL for mov TPR */
|
---|
5010 | int rc = hmR0SvmEmulateMovTpr(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
|
---|
5011 | if (rc == VINF_SUCCESS)
|
---|
5012 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
5013 | else if (rc == VERR_NOT_FOUND)
|
---|
5014 | {
|
---|
5015 | /* Handle GIM provider hypercalls. */
|
---|
5016 | rc = VERR_NOT_SUPPORTED;
|
---|
5017 | if (GIMAreHypercallsEnabled(pVCpu))
|
---|
5018 | rc = GIMHypercall(pVCpu, pCtx);
|
---|
5019 | }
|
---|
5020 |
|
---|
5021 | if (rc != VINF_SUCCESS)
|
---|
5022 | hmR0SvmSetPendingXcptUD(pVCpu);
|
---|
5023 | return VINF_SUCCESS;
|
---|
5024 | }
|
---|
5025 |
|
---|
5026 |
|
---|
5027 | /**
|
---|
5028 | * #VMEXIT handler for IRET (SVM_EXIT_IRET). Conditional #VMEXIT.
|
---|
5029 | */
|
---|
5030 | HMSVM_EXIT_DECL hmR0SvmExitIret(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
5031 | {
|
---|
5032 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
5033 |
|
---|
5034 | /* Clear NMI blocking. */
|
---|
5035 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
5036 |
|
---|
5037 | /* Indicate that we no longer need to #VMEXIT when the guest is ready to receive NMIs, it is now ready. */
|
---|
5038 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
5039 | hmR0SvmClearIretIntercept(pVmcb);
|
---|
5040 |
|
---|
5041 | /* Deliver the pending NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
|
---|
5042 | return VINF_SUCCESS;
|
---|
5043 | }
|
---|
5044 |
|
---|
5045 |
|
---|
5046 | /**
|
---|
5047 | * #VMEXIT handler for page-fault exceptions (SVM_EXIT_EXCEPTION_E). Conditional
|
---|
5048 | * #VMEXIT.
|
---|
5049 | */
|
---|
5050 | HMSVM_EXIT_DECL hmR0SvmExitXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
5051 | {
|
---|
5052 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
5053 |
|
---|
5054 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
5055 |
|
---|
5056 | /* See AMD spec. 15.12.15 "#PF (Page Fault)". */
|
---|
5057 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
5058 | uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
|
---|
5059 | RTGCUINTPTR uFaultAddress = pVmcb->ctrl.u64ExitInfo2;
|
---|
5060 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
5061 |
|
---|
5062 | #if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) || defined(HMSVM_ALWAYS_TRAP_PF)
|
---|
5063 | if (pVM->hm.s.fNestedPaging)
|
---|
5064 | {
|
---|
5065 | pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
|
---|
5066 | if (!pSvmTransient->fVectoringDoublePF)
|
---|
5067 | {
|
---|
5068 | /* A genuine guest #PF, reflect it to the guest. */
|
---|
5069 | hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
|
---|
5070 | Log4(("#PF: Guest page fault at %04X:%RGv FaultAddr=%RGv ErrCode=%#x\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip,
|
---|
5071 | uFaultAddress, u32ErrCode));
|
---|
5072 | }
|
---|
5073 | else
|
---|
5074 | {
|
---|
5075 | /* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
|
---|
5076 | hmR0SvmSetPendingXcptDF(pVCpu);
|
---|
5077 | Log4(("Pending #DF due to vectoring #PF. NP\n"));
|
---|
5078 | }
|
---|
5079 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
|
---|
5080 | return VINF_SUCCESS;
|
---|
5081 | }
|
---|
5082 | #endif
|
---|
5083 |
|
---|
5084 | Assert(!pVM->hm.s.fNestedPaging);
|
---|
5085 |
|
---|
5086 | #ifdef VBOX_HM_WITH_GUEST_PATCHING
|
---|
5087 | /* Shortcut for APIC TPR reads and writes; only applicable to 32-bit guests. */
|
---|
5088 | if ( pVM->hm.s.fTprPatchingAllowed
|
---|
5089 | && (uFaultAddress & 0xfff) == 0x80 /* TPR offset. */
|
---|
5090 | && !(u32ErrCode & X86_TRAP_PF_P) /* Not present. */
|
---|
5091 | && !CPUMIsGuestInLongModeEx(pCtx)
|
---|
5092 | && !CPUMGetGuestCPL(pVCpu)
|
---|
5093 | && pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
|
---|
5094 | {
|
---|
5095 | RTGCPHYS GCPhysApicBase;
|
---|
5096 | GCPhysApicBase = pCtx->msrApicBase;
|
---|
5097 | GCPhysApicBase &= PAGE_BASE_GC_MASK;
|
---|
5098 |
|
---|
5099 | /* Check if the page at the fault-address is the APIC base. */
|
---|
5100 | RTGCPHYS GCPhysPage;
|
---|
5101 | int rc2 = PGMGstGetPage(pVCpu, (RTGCPTR)uFaultAddress, NULL /* pfFlags */, &GCPhysPage);
|
---|
5102 | if ( rc2 == VINF_SUCCESS
|
---|
5103 | && GCPhysPage == GCPhysApicBase)
|
---|
5104 | {
|
---|
5105 | /* Only attempt to patch the instruction once. */
|
---|
5106 | PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
|
---|
5107 | if (!pPatch)
|
---|
5108 | return VINF_EM_HM_PATCH_TPR_INSTR;
|
---|
5109 | }
|
---|
5110 | }
|
---|
5111 | #endif
|
---|
5112 |
|
---|
5113 | Log4(("#PF: uFaultAddress=%#RX64 CS:RIP=%#04x:%#RX64 u32ErrCode %#RX32 cr3=%#RX64\n", uFaultAddress, pCtx->cs.Sel,
|
---|
5114 | pCtx->rip, u32ErrCode, pCtx->cr3));
|
---|
5115 |
|
---|
5116 | /* If it's a vectoring #PF, emulate injecting the original event injection as PGMTrap0eHandler() is incapable
|
---|
5117 | of differentiating between instruction emulation and event injection that caused a #PF. See @bugref{}. */
|
---|
5118 | if (pSvmTransient->fVectoringPF)
|
---|
5119 | {
|
---|
5120 | Assert(pVCpu->hm.s.Event.fPending);
|
---|
5121 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
5122 | }
|
---|
5123 |
|
---|
5124 | TRPMAssertXcptPF(pVCpu, uFaultAddress, u32ErrCode);
|
---|
5125 | int rc = PGMTrap0eHandler(pVCpu, u32ErrCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
|
---|
5126 |
|
---|
5127 | Log4(("#PF rc=%Rrc\n", rc));
|
---|
5128 |
|
---|
5129 | if (rc == VINF_SUCCESS)
|
---|
5130 | {
|
---|
5131 | /* Successfully synced shadow pages tables or emulated an MMIO instruction. */
|
---|
5132 | TRPMResetTrap(pVCpu);
|
---|
5133 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
|
---|
5134 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
5135 | return rc;
|
---|
5136 | }
|
---|
5137 | else if (rc == VINF_EM_RAW_GUEST_TRAP)
|
---|
5138 | {
|
---|
5139 | pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
|
---|
5140 |
|
---|
5141 | if (!pSvmTransient->fVectoringDoublePF)
|
---|
5142 | {
|
---|
5143 | /* It's a guest page fault and needs to be reflected to the guest. */
|
---|
5144 | u32ErrCode = TRPMGetErrorCode(pVCpu); /* The error code might have been changed. */
|
---|
5145 | TRPMResetTrap(pVCpu);
|
---|
5146 | hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
|
---|
5147 | }
|
---|
5148 | else
|
---|
5149 | {
|
---|
5150 | /* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
|
---|
5151 | TRPMResetTrap(pVCpu);
|
---|
5152 | hmR0SvmSetPendingXcptDF(pVCpu);
|
---|
5153 | Log4(("#PF: Pending #DF due to vectoring #PF\n"));
|
---|
5154 | }
|
---|
5155 |
|
---|
5156 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
|
---|
5157 | return VINF_SUCCESS;
|
---|
5158 | }
|
---|
5159 |
|
---|
5160 | TRPMResetTrap(pVCpu);
|
---|
5161 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPFEM);
|
---|
5162 | return rc;
|
---|
5163 | }
|
---|
5164 |
|
---|
5165 |
|
---|
5166 | /**
|
---|
5167 | * #VMEXIT handler for device-not-available exceptions (SVM_EXIT_EXCEPTION_7).
|
---|
5168 | * Conditional #VMEXIT.
|
---|
5169 | */
|
---|
5170 | HMSVM_EXIT_DECL hmR0SvmExitXcptNM(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
5171 | {
|
---|
5172 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
5173 |
|
---|
5174 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
5175 |
|
---|
5176 | /* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
|
---|
5177 | VMMRZCallRing3Disable(pVCpu);
|
---|
5178 | HM_DISABLE_PREEMPT_IF_NEEDED();
|
---|
5179 |
|
---|
5180 | int rc;
|
---|
5181 | /* If the guest FPU was active at the time of the #NM exit, then it's a guest fault. */
|
---|
5182 | if (pSvmTransient->fWasGuestFPUStateActive)
|
---|
5183 | {
|
---|
5184 | rc = VINF_EM_RAW_GUEST_TRAP;
|
---|
5185 | Assert(CPUMIsGuestFPUStateActive(pVCpu) || HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0));
|
---|
5186 | }
|
---|
5187 | else
|
---|
5188 | {
|
---|
5189 | #ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
|
---|
5190 | Assert(!pSvmTransient->fWasGuestFPUStateActive);
|
---|
5191 | #endif
|
---|
5192 | rc = CPUMR0Trap07Handler(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
|
---|
5193 | Assert(rc == VINF_EM_RAW_GUEST_TRAP || (rc == VINF_SUCCESS && CPUMIsGuestFPUStateActive(pVCpu)));
|
---|
5194 | }
|
---|
5195 |
|
---|
5196 | HM_RESTORE_PREEMPT_IF_NEEDED();
|
---|
5197 | VMMRZCallRing3Enable(pVCpu);
|
---|
5198 |
|
---|
5199 | if (rc == VINF_SUCCESS)
|
---|
5200 | {
|
---|
5201 | /* Guest FPU state was activated, we'll want to change CR0 FPU intercepts before the next VM-reentry. */
|
---|
5202 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
5203 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowNM);
|
---|
5204 | pVCpu->hm.s.fUseGuestFpu = true;
|
---|
5205 | }
|
---|
5206 | else
|
---|
5207 | {
|
---|
5208 | /* Forward #NM to the guest. */
|
---|
5209 | Assert(rc == VINF_EM_RAW_GUEST_TRAP);
|
---|
5210 | hmR0SvmSetPendingXcptNM(pVCpu);
|
---|
5211 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestNM);
|
---|
5212 | }
|
---|
5213 | return VINF_SUCCESS;
|
---|
5214 | }
|
---|
5215 |
|
---|
5216 |
|
---|
5217 | /**
|
---|
5218 | * #VMEXIT handler for math-fault exceptions (SVM_EXIT_EXCEPTION_10).
|
---|
5219 | * Conditional #VMEXIT.
|
---|
5220 | */
|
---|
5221 | HMSVM_EXIT_DECL hmR0SvmExitXcptMF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
5222 | {
|
---|
5223 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
5224 |
|
---|
5225 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
5226 |
|
---|
5227 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestMF);
|
---|
5228 |
|
---|
5229 | if (!(pCtx->cr0 & X86_CR0_NE))
|
---|
5230 | {
|
---|
5231 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
5232 | PDISSTATE pDis = &pVCpu->hm.s.DisState;
|
---|
5233 | unsigned cbOp;
|
---|
5234 | int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, &cbOp);
|
---|
5235 | if (RT_SUCCESS(rc))
|
---|
5236 | {
|
---|
5237 | /* Convert a #MF into a FERR -> IRQ 13. See @bugref{6117}. */
|
---|
5238 | rc = PDMIsaSetIrq(pVCpu->CTX_SUFF(pVM), 13, 1, 0 /* uTagSrc */);
|
---|
5239 | if (RT_SUCCESS(rc))
|
---|
5240 | pCtx->rip += cbOp;
|
---|
5241 | }
|
---|
5242 | else
|
---|
5243 | Log4(("hmR0SvmExitXcptMF: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
|
---|
5244 | return rc;
|
---|
5245 | }
|
---|
5246 |
|
---|
5247 | hmR0SvmSetPendingXcptMF(pVCpu);
|
---|
5248 | return VINF_SUCCESS;
|
---|
5249 | }
|
---|
5250 |
|
---|
5251 |
|
---|
5252 | /**
|
---|
5253 | * #VMEXIT handler for debug exceptions (SVM_EXIT_EXCEPTION_1). Conditional
|
---|
5254 | * #VMEXIT.
|
---|
5255 | */
|
---|
5256 | HMSVM_EXIT_DECL hmR0SvmExitXcptDB(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
5257 | {
|
---|
5258 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
5259 |
|
---|
5260 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
5261 |
|
---|
5262 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDB);
|
---|
5263 |
|
---|
5264 | /* This can be a fault-type #DB (instruction breakpoint) or a trap-type #DB (data breakpoint). However, for both cases
|
---|
5265 | DR6 and DR7 are updated to what the exception handler expects. See AMD spec. 15.12.2 "#DB (Debug)". */
|
---|
5266 | PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;
|
---|
5267 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
5268 | int rc = DBGFRZTrap01Handler(pVM, pVCpu, CPUMCTX2CORE(pCtx), pVmcb->guest.u64DR6, pVCpu->hm.s.fSingleInstruction);
|
---|
5269 | if (rc == VINF_EM_RAW_GUEST_TRAP)
|
---|
5270 | {
|
---|
5271 | Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> guest trap\n", pVmcb->guest.u64DR6));
|
---|
5272 | if (CPUMIsHyperDebugStateActive(pVCpu))
|
---|
5273 | CPUMSetGuestDR6(pVCpu, CPUMGetGuestDR6(pVCpu) | pVmcb->guest.u64DR6);
|
---|
5274 |
|
---|
5275 | /* Reflect the exception back to the guest. */
|
---|
5276 | hmR0SvmSetPendingXcptDB(pVCpu);
|
---|
5277 | rc = VINF_SUCCESS;
|
---|
5278 | }
|
---|
5279 |
|
---|
5280 | /*
|
---|
5281 | * Update DR6.
|
---|
5282 | */
|
---|
5283 | if (CPUMIsHyperDebugStateActive(pVCpu))
|
---|
5284 | {
|
---|
5285 | Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> %Rrc\n", pVmcb->guest.u64DR6, rc));
|
---|
5286 | pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
|
---|
5287 | pVmcb->ctrl.u64VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
|
---|
5288 | }
|
---|
5289 | else
|
---|
5290 | {
|
---|
5291 | AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc));
|
---|
5292 | Assert(!pVCpu->hm.s.fSingleInstruction && !DBGFIsStepping(pVCpu));
|
---|
5293 | }
|
---|
5294 |
|
---|
5295 | return rc;
|
---|
5296 | }
|
---|
5297 |
|
---|
5298 | /** @} */
|
---|
5299 |
|
---|