1 | /* $Id: GVMMR0.cpp 80274 2019-08-14 14:34:38Z vboxsync $ */
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2 | /** @file
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3 | * GVMM - Global VM Manager.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2007-2019 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 | /** @page pg_gvmm GVMM - The Global VM Manager
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20 | *
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21 | * The Global VM Manager lives in ring-0. Its main function at the moment is
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22 | * to manage a list of all running VMs, keep a ring-0 only structure (GVM) for
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23 | * each of them, and assign them unique identifiers (so GMM can track page
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24 | * owners). The GVMM also manage some of the host CPU resources, like the
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25 | * periodic preemption timer.
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26 | *
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27 | * The GVMM will create a ring-0 object for each VM when it is registered, this
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28 | * is both for session cleanup purposes and for having a point where it is
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29 | * possible to implement usage polices later (in SUPR0ObjRegister).
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30 | *
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31 | *
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32 | * @section sec_gvmm_ppt Periodic Preemption Timer (PPT)
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33 | *
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34 | * On system that sports a high resolution kernel timer API, we use per-cpu
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35 | * timers to generate interrupts that preempts VT-x, AMD-V and raw-mode guest
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36 | * execution. The timer frequency is calculating by taking the max
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37 | * TMCalcHostTimerFrequency for all VMs running on a CPU for the last ~160 ms
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38 | * (RT_ELEMENTS((PGVMMHOSTCPU)0, Ppt.aHzHistory) *
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39 | * GVMMHOSTCPU_PPT_HIST_INTERVAL_NS).
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40 | *
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41 | * The TMCalcHostTimerFrequency() part of the things gets its takes the max
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42 | * TMTimerSetFrequencyHint() value and adjusts by the current catch-up percent,
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43 | * warp drive percent and some fudge factors. VMMR0.cpp reports the result via
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44 | * GVMMR0SchedUpdatePeriodicPreemptionTimer() before switching to the VT-x,
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45 | * AMD-V and raw-mode execution environments.
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46 | */
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47 |
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48 |
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49 | /*********************************************************************************************************************************
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50 | * Header Files *
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51 | *********************************************************************************************************************************/
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52 | #define LOG_GROUP LOG_GROUP_GVMM
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53 | #include <VBox/vmm/gvmm.h>
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54 | #include <VBox/vmm/gmm.h>
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55 | #include "GVMMR0Internal.h"
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56 | #include <VBox/vmm/vmcc.h>
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57 | #include <VBox/vmm/vmcpuset.h>
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58 | #include <VBox/vmm/vmm.h>
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59 | #ifdef VBOX_WITH_NEM_R0
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60 | # include <VBox/vmm/nem.h>
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61 | #endif
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62 | #include <VBox/param.h>
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63 | #include <VBox/err.h>
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64 |
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65 | #include <iprt/asm.h>
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66 | #include <iprt/asm-amd64-x86.h>
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67 | #include <iprt/critsect.h>
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68 | #include <iprt/mem.h>
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69 | #include <iprt/semaphore.h>
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70 | #include <iprt/time.h>
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71 | #include <VBox/log.h>
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72 | #include <iprt/thread.h>
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73 | #include <iprt/process.h>
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74 | #include <iprt/param.h>
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75 | #include <iprt/string.h>
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76 | #include <iprt/assert.h>
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77 | #include <iprt/mem.h>
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78 | #include <iprt/memobj.h>
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79 | #include <iprt/mp.h>
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80 | #include <iprt/cpuset.h>
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81 | #include <iprt/spinlock.h>
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82 | #include <iprt/timer.h>
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83 |
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84 | #include "dtrace/VBoxVMM.h"
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85 |
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86 |
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87 | /*********************************************************************************************************************************
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88 | * Defined Constants And Macros *
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89 | *********************************************************************************************************************************/
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90 | #if defined(RT_OS_LINUX) || defined(RT_OS_SOLARIS) || defined(DOXYGEN_RUNNING)
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91 | /** Define this to enable the periodic preemption timer. */
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92 | # define GVMM_SCHED_WITH_PPT
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93 | #endif
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94 |
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95 |
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96 | /** @def GVMM_CHECK_SMAP_SETUP
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97 | * SMAP check setup. */
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98 | /** @def GVMM_CHECK_SMAP_CHECK
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99 | * Checks that the AC flag is set if SMAP is enabled. If AC is not set,
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100 | * it will be logged and @a a_BadExpr is executed. */
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101 | /** @def GVMM_CHECK_SMAP_CHECK2
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102 | * Checks that the AC flag is set if SMAP is enabled. If AC is not set, it will
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103 | * be logged, written to the VMs assertion text buffer, and @a a_BadExpr is
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104 | * executed. */
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105 | #if defined(VBOX_STRICT) || 1
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106 | # define GVMM_CHECK_SMAP_SETUP() uint32_t const fKernelFeatures = SUPR0GetKernelFeatures()
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107 | # define GVMM_CHECK_SMAP_CHECK(a_BadExpr) \
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108 | do { \
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109 | if (fKernelFeatures & SUPKERNELFEATURES_SMAP) \
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110 | { \
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111 | RTCCUINTREG fEflCheck = ASMGetFlags(); \
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112 | if (RT_LIKELY(fEflCheck & X86_EFL_AC)) \
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113 | { /* likely */ } \
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114 | else \
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115 | { \
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116 | SUPR0Printf("%s, line %d: EFLAGS.AC is clear! (%#x)\n", __FUNCTION__, __LINE__, (uint32_t)fEflCheck); \
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117 | a_BadExpr; \
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118 | } \
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119 | } \
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120 | } while (0)
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121 | # define GVMM_CHECK_SMAP_CHECK2(a_pVM, a_BadExpr) \
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122 | do { \
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123 | if (fKernelFeatures & SUPKERNELFEATURES_SMAP) \
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124 | { \
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125 | RTCCUINTREG fEflCheck = ASMGetFlags(); \
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126 | if (RT_LIKELY(fEflCheck & X86_EFL_AC)) \
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127 | { /* likely */ } \
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128 | else \
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129 | { \
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130 | SUPR0BadContext((a_pVM) ? (a_pVM)->pSession : NULL, __FILE__, __LINE__, "EFLAGS.AC is zero!"); \
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131 | a_BadExpr; \
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132 | } \
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133 | } \
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134 | } while (0)
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135 | #else
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136 | # define GVMM_CHECK_SMAP_SETUP() uint32_t const fKernelFeatures = 0
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137 | # define GVMM_CHECK_SMAP_CHECK(a_BadExpr) NOREF(fKernelFeatures)
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138 | # define GVMM_CHECK_SMAP_CHECK2(a_pVM, a_BadExpr) NOREF(fKernelFeatures)
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139 | #endif
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140 |
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141 |
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142 |
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143 | /*********************************************************************************************************************************
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144 | * Structures and Typedefs *
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145 | *********************************************************************************************************************************/
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146 |
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147 | /**
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148 | * Global VM handle.
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149 | */
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150 | typedef struct GVMHANDLE
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151 | {
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152 | /** The index of the next handle in the list (free or used). (0 is nil.) */
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153 | uint16_t volatile iNext;
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154 | /** Our own index / handle value. */
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155 | uint16_t iSelf;
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156 | /** The process ID of the handle owner.
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157 | * This is used for access checks. */
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158 | RTPROCESS ProcId;
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159 | /** The pointer to the ring-0 only (aka global) VM structure. */
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160 | PGVM pGVM;
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161 | /** The ring-0 mapping of the shared VM instance data. */
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162 | PVMCC pVM;
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163 | /** The virtual machine object. */
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164 | void *pvObj;
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165 | /** The session this VM is associated with. */
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166 | PSUPDRVSESSION pSession;
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167 | /** The ring-0 handle of the EMT0 thread.
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168 | * This is used for ownership checks as well as looking up a VM handle by thread
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169 | * at times like assertions. */
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170 | RTNATIVETHREAD hEMT0;
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171 | } GVMHANDLE;
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172 | /** Pointer to a global VM handle. */
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173 | typedef GVMHANDLE *PGVMHANDLE;
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174 |
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175 | /** Number of GVM handles (including the NIL handle). */
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176 | #if HC_ARCH_BITS == 64
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177 | # define GVMM_MAX_HANDLES 8192
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178 | #else
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179 | # define GVMM_MAX_HANDLES 128
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180 | #endif
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181 |
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182 | /**
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183 | * Per host CPU GVMM data.
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184 | */
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185 | typedef struct GVMMHOSTCPU
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186 | {
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187 | /** Magic number (GVMMHOSTCPU_MAGIC). */
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188 | uint32_t volatile u32Magic;
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189 | /** The CPU ID. */
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190 | RTCPUID idCpu;
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191 | /** The CPU set index. */
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192 | uint32_t idxCpuSet;
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193 |
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194 | #ifdef GVMM_SCHED_WITH_PPT
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195 | /** Periodic preemption timer data. */
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196 | struct
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197 | {
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198 | /** The handle to the periodic preemption timer. */
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199 | PRTTIMER pTimer;
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200 | /** Spinlock protecting the data below. */
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201 | RTSPINLOCK hSpinlock;
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202 | /** The smalles Hz that we need to care about. (static) */
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203 | uint32_t uMinHz;
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204 | /** The number of ticks between each historization. */
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205 | uint32_t cTicksHistoriziationInterval;
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206 | /** The current historization tick (counting up to
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207 | * cTicksHistoriziationInterval and then resetting). */
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208 | uint32_t iTickHistorization;
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209 | /** The current timer interval. This is set to 0 when inactive. */
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210 | uint32_t cNsInterval;
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211 | /** The current timer frequency. This is set to 0 when inactive. */
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212 | uint32_t uTimerHz;
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213 | /** The current max frequency reported by the EMTs.
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214 | * This gets historicize and reset by the timer callback. This is
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215 | * read without holding the spinlock, so needs atomic updating. */
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216 | uint32_t volatile uDesiredHz;
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217 | /** Whether the timer was started or not. */
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218 | bool volatile fStarted;
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219 | /** Set if we're starting timer. */
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220 | bool volatile fStarting;
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221 | /** The index of the next history entry (mod it). */
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222 | uint32_t iHzHistory;
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223 | /** Historicized uDesiredHz values. The array wraps around, new entries
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224 | * are added at iHzHistory. This is updated approximately every
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225 | * GVMMHOSTCPU_PPT_HIST_INTERVAL_NS by the timer callback. */
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226 | uint32_t aHzHistory[8];
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227 | /** Statistics counter for recording the number of interval changes. */
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228 | uint32_t cChanges;
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229 | /** Statistics counter for recording the number of timer starts. */
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230 | uint32_t cStarts;
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231 | } Ppt;
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232 | #endif /* GVMM_SCHED_WITH_PPT */
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233 |
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234 | } GVMMHOSTCPU;
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235 | /** Pointer to the per host CPU GVMM data. */
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236 | typedef GVMMHOSTCPU *PGVMMHOSTCPU;
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237 | /** The GVMMHOSTCPU::u32Magic value (Petra, Tanya & Rachel Haden). */
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238 | #define GVMMHOSTCPU_MAGIC UINT32_C(0x19711011)
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239 | /** The interval on history entry should cover (approximately) give in
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240 | * nanoseconds. */
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241 | #define GVMMHOSTCPU_PPT_HIST_INTERVAL_NS UINT32_C(20000000)
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242 |
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243 |
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244 | /**
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245 | * The GVMM instance data.
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246 | */
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247 | typedef struct GVMM
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248 | {
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249 | /** Eyecatcher / magic. */
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250 | uint32_t u32Magic;
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251 | /** The index of the head of the free handle chain. (0 is nil.) */
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252 | uint16_t volatile iFreeHead;
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253 | /** The index of the head of the active handle chain. (0 is nil.) */
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254 | uint16_t volatile iUsedHead;
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255 | /** The number of VMs. */
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256 | uint16_t volatile cVMs;
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257 | /** Alignment padding. */
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258 | uint16_t u16Reserved;
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259 | /** The number of EMTs. */
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260 | uint32_t volatile cEMTs;
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261 | /** The number of EMTs that have halted in GVMMR0SchedHalt. */
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262 | uint32_t volatile cHaltedEMTs;
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263 | /** Mini lock for restricting early wake-ups to one thread. */
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264 | bool volatile fDoingEarlyWakeUps;
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265 | bool afPadding[3]; /**< explicit alignment padding. */
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266 | /** When the next halted or sleeping EMT will wake up.
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267 | * This is set to 0 when it needs recalculating and to UINT64_MAX when
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268 | * there are no halted or sleeping EMTs in the GVMM. */
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269 | uint64_t uNsNextEmtWakeup;
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270 | /** The lock used to serialize VM creation, destruction and associated events that
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271 | * isn't performance critical. Owners may acquire the list lock. */
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272 | RTCRITSECT CreateDestroyLock;
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273 | /** The lock used to serialize used list updates and accesses.
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274 | * This indirectly includes scheduling since the scheduler will have to walk the
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275 | * used list to examin running VMs. Owners may not acquire any other locks. */
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276 | RTCRITSECTRW UsedLock;
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277 | /** The handle array.
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278 | * The size of this array defines the maximum number of currently running VMs.
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279 | * The first entry is unused as it represents the NIL handle. */
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280 | GVMHANDLE aHandles[GVMM_MAX_HANDLES];
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281 |
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282 | /** @gcfgm{/GVMM/cEMTsMeansCompany, 32-bit, 0, UINT32_MAX, 1}
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283 | * The number of EMTs that means we no longer consider ourselves alone on a
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284 | * CPU/Core.
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285 | */
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286 | uint32_t cEMTsMeansCompany;
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287 | /** @gcfgm{/GVMM/MinSleepAlone,32-bit, 0, 100000000, 750000, ns}
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288 | * The minimum sleep time for when we're alone, in nano seconds.
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289 | */
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290 | uint32_t nsMinSleepAlone;
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291 | /** @gcfgm{/GVMM/MinSleepCompany,32-bit,0, 100000000, 15000, ns}
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292 | * The minimum sleep time for when we've got company, in nano seconds.
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293 | */
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294 | uint32_t nsMinSleepCompany;
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295 | /** @gcfgm{/GVMM/EarlyWakeUp1, 32-bit, 0, 100000000, 25000, ns}
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296 | * The limit for the first round of early wake-ups, given in nano seconds.
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297 | */
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298 | uint32_t nsEarlyWakeUp1;
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299 | /** @gcfgm{/GVMM/EarlyWakeUp2, 32-bit, 0, 100000000, 50000, ns}
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300 | * The limit for the second round of early wake-ups, given in nano seconds.
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301 | */
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302 | uint32_t nsEarlyWakeUp2;
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303 |
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304 | /** Set if we're doing early wake-ups.
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305 | * This reflects nsEarlyWakeUp1 and nsEarlyWakeUp2. */
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306 | bool volatile fDoEarlyWakeUps;
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307 |
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308 | /** The number of entries in the host CPU array (aHostCpus). */
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309 | uint32_t cHostCpus;
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310 | /** Per host CPU data (variable length). */
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311 | GVMMHOSTCPU aHostCpus[1];
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312 | } GVMM;
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313 | AssertCompileMemberAlignment(GVMM, CreateDestroyLock, 8);
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314 | AssertCompileMemberAlignment(GVMM, UsedLock, 8);
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315 | AssertCompileMemberAlignment(GVMM, uNsNextEmtWakeup, 8);
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316 | /** Pointer to the GVMM instance data. */
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317 | typedef GVMM *PGVMM;
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318 |
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319 | /** The GVMM::u32Magic value (Charlie Haden). */
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320 | #define GVMM_MAGIC UINT32_C(0x19370806)
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321 |
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322 |
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323 |
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324 | /*********************************************************************************************************************************
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325 | * Global Variables *
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326 | *********************************************************************************************************************************/
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327 | /** Pointer to the GVMM instance data.
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328 | * (Just my general dislike for global variables.) */
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329 | static PGVMM g_pGVMM = NULL;
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330 |
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331 | /** Macro for obtaining and validating the g_pGVMM pointer.
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332 | * On failure it will return from the invoking function with the specified return value.
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333 | *
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334 | * @param pGVMM The name of the pGVMM variable.
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335 | * @param rc The return value on failure. Use VERR_GVMM_INSTANCE for VBox
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336 | * status codes.
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337 | */
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338 | #define GVMM_GET_VALID_INSTANCE(pGVMM, rc) \
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339 | do { \
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340 | (pGVMM) = g_pGVMM;\
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341 | AssertPtrReturn((pGVMM), (rc)); \
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342 | AssertMsgReturn((pGVMM)->u32Magic == GVMM_MAGIC, ("%p - %#x\n", (pGVMM), (pGVMM)->u32Magic), (rc)); \
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343 | } while (0)
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344 |
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345 | /** Macro for obtaining and validating the g_pGVMM pointer, void function variant.
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346 | * On failure it will return from the invoking function.
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347 | *
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348 | * @param pGVMM The name of the pGVMM variable.
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349 | */
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350 | #define GVMM_GET_VALID_INSTANCE_VOID(pGVMM) \
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351 | do { \
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352 | (pGVMM) = g_pGVMM;\
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353 | AssertPtrReturnVoid((pGVMM)); \
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354 | AssertMsgReturnVoid((pGVMM)->u32Magic == GVMM_MAGIC, ("%p - %#x\n", (pGVMM), (pGVMM)->u32Magic)); \
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355 | } while (0)
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356 |
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357 |
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358 | /*********************************************************************************************************************************
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359 | * Internal Functions *
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360 | *********************************************************************************************************************************/
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361 | #ifdef VBOX_BUGREF_9217
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362 | static void gvmmR0InitPerVMData(PGVM pGVM, int16_t hSelf, VMCPUID cCpus, PSUPDRVSESSION pSession);
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363 | #else
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364 | static void gvmmR0InitPerVMData(PGVM pGVM);
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365 | #endif
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366 | static DECLCALLBACK(void) gvmmR0HandleObjDestructor(void *pvObj, void *pvGVMM, void *pvHandle);
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367 | static int gvmmR0ByGVMandVM(PGVM pGVM, PVMCC pVM, PGVMM *ppGVMM, bool fTakeUsedLock);
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368 | static int gvmmR0ByGVMandVMandEMT(PGVM pGVM, PVMCC pVM, VMCPUID idCpu, PGVMM *ppGVMM);
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369 |
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370 | #ifdef GVMM_SCHED_WITH_PPT
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371 | static DECLCALLBACK(void) gvmmR0SchedPeriodicPreemptionTimerCallback(PRTTIMER pTimer, void *pvUser, uint64_t iTick);
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372 | #endif
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373 |
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374 |
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375 | /**
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376 | * Initializes the GVMM.
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377 | *
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378 | * This is called while owning the loader semaphore (see supdrvIOCtl_LdrLoad()).
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379 | *
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380 | * @returns VBox status code.
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381 | */
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382 | GVMMR0DECL(int) GVMMR0Init(void)
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383 | {
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384 | LogFlow(("GVMMR0Init:\n"));
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385 |
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386 | /*
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387 | * Allocate and initialize the instance data.
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388 | */
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389 | uint32_t cHostCpus = RTMpGetArraySize();
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390 | AssertMsgReturn(cHostCpus > 0 && cHostCpus < _64K, ("%d", (int)cHostCpus), VERR_GVMM_HOST_CPU_RANGE);
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391 |
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392 | PGVMM pGVMM = (PGVMM)RTMemAllocZ(RT_UOFFSETOF_DYN(GVMM, aHostCpus[cHostCpus]));
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393 | if (!pGVMM)
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394 | return VERR_NO_MEMORY;
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395 | int rc = RTCritSectInitEx(&pGVMM->CreateDestroyLock, 0, NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE,
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396 | "GVMM-CreateDestroyLock");
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397 | if (RT_SUCCESS(rc))
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398 | {
|
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399 | rc = RTCritSectRwInitEx(&pGVMM->UsedLock, 0, NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, "GVMM-UsedLock");
|
---|
400 | if (RT_SUCCESS(rc))
|
---|
401 | {
|
---|
402 | pGVMM->u32Magic = GVMM_MAGIC;
|
---|
403 | pGVMM->iUsedHead = 0;
|
---|
404 | pGVMM->iFreeHead = 1;
|
---|
405 |
|
---|
406 | /* the nil handle */
|
---|
407 | pGVMM->aHandles[0].iSelf = 0;
|
---|
408 | pGVMM->aHandles[0].iNext = 0;
|
---|
409 |
|
---|
410 | /* the tail */
|
---|
411 | unsigned i = RT_ELEMENTS(pGVMM->aHandles) - 1;
|
---|
412 | pGVMM->aHandles[i].iSelf = i;
|
---|
413 | pGVMM->aHandles[i].iNext = 0; /* nil */
|
---|
414 |
|
---|
415 | /* the rest */
|
---|
416 | while (i-- > 1)
|
---|
417 | {
|
---|
418 | pGVMM->aHandles[i].iSelf = i;
|
---|
419 | pGVMM->aHandles[i].iNext = i + 1;
|
---|
420 | }
|
---|
421 |
|
---|
422 | /* The default configuration values. */
|
---|
423 | uint32_t cNsResolution = RTSemEventMultiGetResolution();
|
---|
424 | pGVMM->cEMTsMeansCompany = 1; /** @todo should be adjusted to relative to the cpu count or something... */
|
---|
425 | if (cNsResolution >= 5*RT_NS_100US)
|
---|
426 | {
|
---|
427 | pGVMM->nsMinSleepAlone = 750000 /* ns (0.750 ms) */; /** @todo this should be adjusted to be 75% (or something) of the scheduler granularity... */
|
---|
428 | pGVMM->nsMinSleepCompany = 15000 /* ns (0.015 ms) */;
|
---|
429 | pGVMM->nsEarlyWakeUp1 = 25000 /* ns (0.025 ms) */;
|
---|
430 | pGVMM->nsEarlyWakeUp2 = 50000 /* ns (0.050 ms) */;
|
---|
431 | }
|
---|
432 | else if (cNsResolution > RT_NS_100US)
|
---|
433 | {
|
---|
434 | pGVMM->nsMinSleepAlone = cNsResolution / 2;
|
---|
435 | pGVMM->nsMinSleepCompany = cNsResolution / 4;
|
---|
436 | pGVMM->nsEarlyWakeUp1 = 0;
|
---|
437 | pGVMM->nsEarlyWakeUp2 = 0;
|
---|
438 | }
|
---|
439 | else
|
---|
440 | {
|
---|
441 | pGVMM->nsMinSleepAlone = 2000;
|
---|
442 | pGVMM->nsMinSleepCompany = 2000;
|
---|
443 | pGVMM->nsEarlyWakeUp1 = 0;
|
---|
444 | pGVMM->nsEarlyWakeUp2 = 0;
|
---|
445 | }
|
---|
446 | pGVMM->fDoEarlyWakeUps = pGVMM->nsEarlyWakeUp1 > 0 && pGVMM->nsEarlyWakeUp2 > 0;
|
---|
447 |
|
---|
448 | /* The host CPU data. */
|
---|
449 | pGVMM->cHostCpus = cHostCpus;
|
---|
450 | uint32_t iCpu = cHostCpus;
|
---|
451 | RTCPUSET PossibleSet;
|
---|
452 | RTMpGetSet(&PossibleSet);
|
---|
453 | while (iCpu-- > 0)
|
---|
454 | {
|
---|
455 | pGVMM->aHostCpus[iCpu].idxCpuSet = iCpu;
|
---|
456 | #ifdef GVMM_SCHED_WITH_PPT
|
---|
457 | pGVMM->aHostCpus[iCpu].Ppt.pTimer = NULL;
|
---|
458 | pGVMM->aHostCpus[iCpu].Ppt.hSpinlock = NIL_RTSPINLOCK;
|
---|
459 | pGVMM->aHostCpus[iCpu].Ppt.uMinHz = 5; /** @todo Add some API which figures this one out. (not *that* important) */
|
---|
460 | pGVMM->aHostCpus[iCpu].Ppt.cTicksHistoriziationInterval = 1;
|
---|
461 | //pGVMM->aHostCpus[iCpu].Ppt.iTickHistorization = 0;
|
---|
462 | //pGVMM->aHostCpus[iCpu].Ppt.cNsInterval = 0;
|
---|
463 | //pGVMM->aHostCpus[iCpu].Ppt.uTimerHz = 0;
|
---|
464 | //pGVMM->aHostCpus[iCpu].Ppt.uDesiredHz = 0;
|
---|
465 | //pGVMM->aHostCpus[iCpu].Ppt.fStarted = false;
|
---|
466 | //pGVMM->aHostCpus[iCpu].Ppt.fStarting = false;
|
---|
467 | //pGVMM->aHostCpus[iCpu].Ppt.iHzHistory = 0;
|
---|
468 | //pGVMM->aHostCpus[iCpu].Ppt.aHzHistory = {0};
|
---|
469 | #endif
|
---|
470 |
|
---|
471 | if (RTCpuSetIsMember(&PossibleSet, iCpu))
|
---|
472 | {
|
---|
473 | pGVMM->aHostCpus[iCpu].idCpu = RTMpCpuIdFromSetIndex(iCpu);
|
---|
474 | pGVMM->aHostCpus[iCpu].u32Magic = GVMMHOSTCPU_MAGIC;
|
---|
475 |
|
---|
476 | #ifdef GVMM_SCHED_WITH_PPT
|
---|
477 | rc = RTTimerCreateEx(&pGVMM->aHostCpus[iCpu].Ppt.pTimer,
|
---|
478 | 50*1000*1000 /* whatever */,
|
---|
479 | RTTIMER_FLAGS_CPU(iCpu) | RTTIMER_FLAGS_HIGH_RES,
|
---|
480 | gvmmR0SchedPeriodicPreemptionTimerCallback,
|
---|
481 | &pGVMM->aHostCpus[iCpu]);
|
---|
482 | if (RT_SUCCESS(rc))
|
---|
483 | rc = RTSpinlockCreate(&pGVMM->aHostCpus[iCpu].Ppt.hSpinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "GVMM/CPU");
|
---|
484 | if (RT_FAILURE(rc))
|
---|
485 | {
|
---|
486 | while (iCpu < cHostCpus)
|
---|
487 | {
|
---|
488 | RTTimerDestroy(pGVMM->aHostCpus[iCpu].Ppt.pTimer);
|
---|
489 | RTSpinlockDestroy(pGVMM->aHostCpus[iCpu].Ppt.hSpinlock);
|
---|
490 | pGVMM->aHostCpus[iCpu].Ppt.hSpinlock = NIL_RTSPINLOCK;
|
---|
491 | iCpu++;
|
---|
492 | }
|
---|
493 | break;
|
---|
494 | }
|
---|
495 | #endif
|
---|
496 | }
|
---|
497 | else
|
---|
498 | {
|
---|
499 | pGVMM->aHostCpus[iCpu].idCpu = NIL_RTCPUID;
|
---|
500 | pGVMM->aHostCpus[iCpu].u32Magic = 0;
|
---|
501 | }
|
---|
502 | }
|
---|
503 | if (RT_SUCCESS(rc))
|
---|
504 | {
|
---|
505 | g_pGVMM = pGVMM;
|
---|
506 | LogFlow(("GVMMR0Init: pGVMM=%p cHostCpus=%u\n", pGVMM, cHostCpus));
|
---|
507 | return VINF_SUCCESS;
|
---|
508 | }
|
---|
509 |
|
---|
510 | /* bail out. */
|
---|
511 | RTCritSectRwDelete(&pGVMM->UsedLock);
|
---|
512 | }
|
---|
513 | RTCritSectDelete(&pGVMM->CreateDestroyLock);
|
---|
514 | }
|
---|
515 |
|
---|
516 | RTMemFree(pGVMM);
|
---|
517 | return rc;
|
---|
518 | }
|
---|
519 |
|
---|
520 |
|
---|
521 | /**
|
---|
522 | * Terminates the GVM.
|
---|
523 | *
|
---|
524 | * This is called while owning the loader semaphore (see supdrvLdrFree()).
|
---|
525 | * And unless something is wrong, there should be absolutely no VMs
|
---|
526 | * registered at this point.
|
---|
527 | */
|
---|
528 | GVMMR0DECL(void) GVMMR0Term(void)
|
---|
529 | {
|
---|
530 | LogFlow(("GVMMR0Term:\n"));
|
---|
531 |
|
---|
532 | PGVMM pGVMM = g_pGVMM;
|
---|
533 | g_pGVMM = NULL;
|
---|
534 | if (RT_UNLIKELY(!VALID_PTR(pGVMM)))
|
---|
535 | {
|
---|
536 | SUPR0Printf("GVMMR0Term: pGVMM=%RKv\n", pGVMM);
|
---|
537 | return;
|
---|
538 | }
|
---|
539 |
|
---|
540 | /*
|
---|
541 | * First of all, stop all active timers.
|
---|
542 | */
|
---|
543 | uint32_t cActiveTimers = 0;
|
---|
544 | uint32_t iCpu = pGVMM->cHostCpus;
|
---|
545 | while (iCpu-- > 0)
|
---|
546 | {
|
---|
547 | ASMAtomicWriteU32(&pGVMM->aHostCpus[iCpu].u32Magic, ~GVMMHOSTCPU_MAGIC);
|
---|
548 | #ifdef GVMM_SCHED_WITH_PPT
|
---|
549 | if ( pGVMM->aHostCpus[iCpu].Ppt.pTimer != NULL
|
---|
550 | && RT_SUCCESS(RTTimerStop(pGVMM->aHostCpus[iCpu].Ppt.pTimer)))
|
---|
551 | cActiveTimers++;
|
---|
552 | #endif
|
---|
553 | }
|
---|
554 | if (cActiveTimers)
|
---|
555 | RTThreadSleep(1); /* fudge */
|
---|
556 |
|
---|
557 | /*
|
---|
558 | * Invalidate the and free resources.
|
---|
559 | */
|
---|
560 | pGVMM->u32Magic = ~GVMM_MAGIC;
|
---|
561 | RTCritSectRwDelete(&pGVMM->UsedLock);
|
---|
562 | RTCritSectDelete(&pGVMM->CreateDestroyLock);
|
---|
563 |
|
---|
564 | pGVMM->iFreeHead = 0;
|
---|
565 | if (pGVMM->iUsedHead)
|
---|
566 | {
|
---|
567 | SUPR0Printf("GVMMR0Term: iUsedHead=%#x! (cVMs=%#x cEMTs=%#x)\n", pGVMM->iUsedHead, pGVMM->cVMs, pGVMM->cEMTs);
|
---|
568 | pGVMM->iUsedHead = 0;
|
---|
569 | }
|
---|
570 |
|
---|
571 | #ifdef GVMM_SCHED_WITH_PPT
|
---|
572 | iCpu = pGVMM->cHostCpus;
|
---|
573 | while (iCpu-- > 0)
|
---|
574 | {
|
---|
575 | RTTimerDestroy(pGVMM->aHostCpus[iCpu].Ppt.pTimer);
|
---|
576 | pGVMM->aHostCpus[iCpu].Ppt.pTimer = NULL;
|
---|
577 | RTSpinlockDestroy(pGVMM->aHostCpus[iCpu].Ppt.hSpinlock);
|
---|
578 | pGVMM->aHostCpus[iCpu].Ppt.hSpinlock = NIL_RTSPINLOCK;
|
---|
579 | }
|
---|
580 | #endif
|
---|
581 |
|
---|
582 | RTMemFree(pGVMM);
|
---|
583 | }
|
---|
584 |
|
---|
585 |
|
---|
586 | /**
|
---|
587 | * A quick hack for setting global config values.
|
---|
588 | *
|
---|
589 | * @returns VBox status code.
|
---|
590 | *
|
---|
591 | * @param pSession The session handle. Used for authentication.
|
---|
592 | * @param pszName The variable name.
|
---|
593 | * @param u64Value The new value.
|
---|
594 | */
|
---|
595 | GVMMR0DECL(int) GVMMR0SetConfig(PSUPDRVSESSION pSession, const char *pszName, uint64_t u64Value)
|
---|
596 | {
|
---|
597 | /*
|
---|
598 | * Validate input.
|
---|
599 | */
|
---|
600 | PGVMM pGVMM;
|
---|
601 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
602 | AssertPtrReturn(pSession, VERR_INVALID_HANDLE);
|
---|
603 | AssertPtrReturn(pszName, VERR_INVALID_POINTER);
|
---|
604 |
|
---|
605 | /*
|
---|
606 | * String switch time!
|
---|
607 | */
|
---|
608 | if (strncmp(pszName, RT_STR_TUPLE("/GVMM/")))
|
---|
609 | return VERR_CFGM_VALUE_NOT_FOUND; /* borrow status codes from CFGM... */
|
---|
610 | int rc = VINF_SUCCESS;
|
---|
611 | pszName += sizeof("/GVMM/") - 1;
|
---|
612 | if (!strcmp(pszName, "cEMTsMeansCompany"))
|
---|
613 | {
|
---|
614 | if (u64Value <= UINT32_MAX)
|
---|
615 | pGVMM->cEMTsMeansCompany = u64Value;
|
---|
616 | else
|
---|
617 | rc = VERR_OUT_OF_RANGE;
|
---|
618 | }
|
---|
619 | else if (!strcmp(pszName, "MinSleepAlone"))
|
---|
620 | {
|
---|
621 | if (u64Value <= RT_NS_100MS)
|
---|
622 | pGVMM->nsMinSleepAlone = u64Value;
|
---|
623 | else
|
---|
624 | rc = VERR_OUT_OF_RANGE;
|
---|
625 | }
|
---|
626 | else if (!strcmp(pszName, "MinSleepCompany"))
|
---|
627 | {
|
---|
628 | if (u64Value <= RT_NS_100MS)
|
---|
629 | pGVMM->nsMinSleepCompany = u64Value;
|
---|
630 | else
|
---|
631 | rc = VERR_OUT_OF_RANGE;
|
---|
632 | }
|
---|
633 | else if (!strcmp(pszName, "EarlyWakeUp1"))
|
---|
634 | {
|
---|
635 | if (u64Value <= RT_NS_100MS)
|
---|
636 | {
|
---|
637 | pGVMM->nsEarlyWakeUp1 = u64Value;
|
---|
638 | pGVMM->fDoEarlyWakeUps = pGVMM->nsEarlyWakeUp1 > 0 && pGVMM->nsEarlyWakeUp2 > 0;
|
---|
639 | }
|
---|
640 | else
|
---|
641 | rc = VERR_OUT_OF_RANGE;
|
---|
642 | }
|
---|
643 | else if (!strcmp(pszName, "EarlyWakeUp2"))
|
---|
644 | {
|
---|
645 | if (u64Value <= RT_NS_100MS)
|
---|
646 | {
|
---|
647 | pGVMM->nsEarlyWakeUp2 = u64Value;
|
---|
648 | pGVMM->fDoEarlyWakeUps = pGVMM->nsEarlyWakeUp1 > 0 && pGVMM->nsEarlyWakeUp2 > 0;
|
---|
649 | }
|
---|
650 | else
|
---|
651 | rc = VERR_OUT_OF_RANGE;
|
---|
652 | }
|
---|
653 | else
|
---|
654 | rc = VERR_CFGM_VALUE_NOT_FOUND;
|
---|
655 | return rc;
|
---|
656 | }
|
---|
657 |
|
---|
658 |
|
---|
659 | /**
|
---|
660 | * A quick hack for getting global config values.
|
---|
661 | *
|
---|
662 | * @returns VBox status code.
|
---|
663 | *
|
---|
664 | * @param pSession The session handle. Used for authentication.
|
---|
665 | * @param pszName The variable name.
|
---|
666 | * @param pu64Value Where to return the value.
|
---|
667 | */
|
---|
668 | GVMMR0DECL(int) GVMMR0QueryConfig(PSUPDRVSESSION pSession, const char *pszName, uint64_t *pu64Value)
|
---|
669 | {
|
---|
670 | /*
|
---|
671 | * Validate input.
|
---|
672 | */
|
---|
673 | PGVMM pGVMM;
|
---|
674 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
675 | AssertPtrReturn(pSession, VERR_INVALID_HANDLE);
|
---|
676 | AssertPtrReturn(pszName, VERR_INVALID_POINTER);
|
---|
677 | AssertPtrReturn(pu64Value, VERR_INVALID_POINTER);
|
---|
678 |
|
---|
679 | /*
|
---|
680 | * String switch time!
|
---|
681 | */
|
---|
682 | if (strncmp(pszName, RT_STR_TUPLE("/GVMM/")))
|
---|
683 | return VERR_CFGM_VALUE_NOT_FOUND; /* borrow status codes from CFGM... */
|
---|
684 | int rc = VINF_SUCCESS;
|
---|
685 | pszName += sizeof("/GVMM/") - 1;
|
---|
686 | if (!strcmp(pszName, "cEMTsMeansCompany"))
|
---|
687 | *pu64Value = pGVMM->cEMTsMeansCompany;
|
---|
688 | else if (!strcmp(pszName, "MinSleepAlone"))
|
---|
689 | *pu64Value = pGVMM->nsMinSleepAlone;
|
---|
690 | else if (!strcmp(pszName, "MinSleepCompany"))
|
---|
691 | *pu64Value = pGVMM->nsMinSleepCompany;
|
---|
692 | else if (!strcmp(pszName, "EarlyWakeUp1"))
|
---|
693 | *pu64Value = pGVMM->nsEarlyWakeUp1;
|
---|
694 | else if (!strcmp(pszName, "EarlyWakeUp2"))
|
---|
695 | *pu64Value = pGVMM->nsEarlyWakeUp2;
|
---|
696 | else
|
---|
697 | rc = VERR_CFGM_VALUE_NOT_FOUND;
|
---|
698 | return rc;
|
---|
699 | }
|
---|
700 |
|
---|
701 |
|
---|
702 | /**
|
---|
703 | * Acquire the 'used' lock in shared mode.
|
---|
704 | *
|
---|
705 | * This prevents destruction of the VM while we're in ring-0.
|
---|
706 | *
|
---|
707 | * @returns IPRT status code, see RTSemFastMutexRequest.
|
---|
708 | * @param a_pGVMM The GVMM instance data.
|
---|
709 | * @sa GVMMR0_USED_SHARED_UNLOCK, GVMMR0_USED_EXCLUSIVE_LOCK
|
---|
710 | */
|
---|
711 | #define GVMMR0_USED_SHARED_LOCK(a_pGVMM) RTCritSectRwEnterShared(&(a_pGVMM)->UsedLock)
|
---|
712 |
|
---|
713 | /**
|
---|
714 | * Release the 'used' lock in when owning it in shared mode.
|
---|
715 | *
|
---|
716 | * @returns IPRT status code, see RTSemFastMutexRequest.
|
---|
717 | * @param a_pGVMM The GVMM instance data.
|
---|
718 | * @sa GVMMR0_USED_SHARED_LOCK
|
---|
719 | */
|
---|
720 | #define GVMMR0_USED_SHARED_UNLOCK(a_pGVMM) RTCritSectRwLeaveShared(&(a_pGVMM)->UsedLock)
|
---|
721 |
|
---|
722 | /**
|
---|
723 | * Acquire the 'used' lock in exclusive mode.
|
---|
724 | *
|
---|
725 | * Only use this function when making changes to the used list.
|
---|
726 | *
|
---|
727 | * @returns IPRT status code, see RTSemFastMutexRequest.
|
---|
728 | * @param a_pGVMM The GVMM instance data.
|
---|
729 | * @sa GVMMR0_USED_EXCLUSIVE_UNLOCK
|
---|
730 | */
|
---|
731 | #define GVMMR0_USED_EXCLUSIVE_LOCK(a_pGVMM) RTCritSectRwEnterExcl(&(a_pGVMM)->UsedLock)
|
---|
732 |
|
---|
733 | /**
|
---|
734 | * Release the 'used' lock when owning it in exclusive mode.
|
---|
735 | *
|
---|
736 | * @returns IPRT status code, see RTSemFastMutexRelease.
|
---|
737 | * @param a_pGVMM The GVMM instance data.
|
---|
738 | * @sa GVMMR0_USED_EXCLUSIVE_LOCK, GVMMR0_USED_SHARED_UNLOCK
|
---|
739 | */
|
---|
740 | #define GVMMR0_USED_EXCLUSIVE_UNLOCK(a_pGVMM) RTCritSectRwLeaveExcl(&(a_pGVMM)->UsedLock)
|
---|
741 |
|
---|
742 |
|
---|
743 | /**
|
---|
744 | * Try acquire the 'create & destroy' lock.
|
---|
745 | *
|
---|
746 | * @returns IPRT status code, see RTSemFastMutexRequest.
|
---|
747 | * @param pGVMM The GVMM instance data.
|
---|
748 | */
|
---|
749 | DECLINLINE(int) gvmmR0CreateDestroyLock(PGVMM pGVMM)
|
---|
750 | {
|
---|
751 | LogFlow(("++gvmmR0CreateDestroyLock(%p)\n", pGVMM));
|
---|
752 | int rc = RTCritSectEnter(&pGVMM->CreateDestroyLock);
|
---|
753 | LogFlow(("gvmmR0CreateDestroyLock(%p)->%Rrc\n", pGVMM, rc));
|
---|
754 | return rc;
|
---|
755 | }
|
---|
756 |
|
---|
757 |
|
---|
758 | /**
|
---|
759 | * Release the 'create & destroy' lock.
|
---|
760 | *
|
---|
761 | * @returns IPRT status code, see RTSemFastMutexRequest.
|
---|
762 | * @param pGVMM The GVMM instance data.
|
---|
763 | */
|
---|
764 | DECLINLINE(int) gvmmR0CreateDestroyUnlock(PGVMM pGVMM)
|
---|
765 | {
|
---|
766 | LogFlow(("--gvmmR0CreateDestroyUnlock(%p)\n", pGVMM));
|
---|
767 | int rc = RTCritSectLeave(&pGVMM->CreateDestroyLock);
|
---|
768 | AssertRC(rc);
|
---|
769 | return rc;
|
---|
770 | }
|
---|
771 |
|
---|
772 |
|
---|
773 | /**
|
---|
774 | * Request wrapper for the GVMMR0CreateVM API.
|
---|
775 | *
|
---|
776 | * @returns VBox status code.
|
---|
777 | * @param pReq The request buffer.
|
---|
778 | * @param pSession The session handle. The VM will be associated with this.
|
---|
779 | */
|
---|
780 | GVMMR0DECL(int) GVMMR0CreateVMReq(PGVMMCREATEVMREQ pReq, PSUPDRVSESSION pSession)
|
---|
781 | {
|
---|
782 | /*
|
---|
783 | * Validate the request.
|
---|
784 | */
|
---|
785 | if (!VALID_PTR(pReq))
|
---|
786 | return VERR_INVALID_POINTER;
|
---|
787 | if (pReq->Hdr.cbReq != sizeof(*pReq))
|
---|
788 | return VERR_INVALID_PARAMETER;
|
---|
789 | if (pReq->pSession != pSession)
|
---|
790 | return VERR_INVALID_POINTER;
|
---|
791 |
|
---|
792 | /*
|
---|
793 | * Execute it.
|
---|
794 | */
|
---|
795 | PVMCC pVM;
|
---|
796 | pReq->pVMR0 = NULL;
|
---|
797 | pReq->pVMR3 = NIL_RTR3PTR;
|
---|
798 | int rc = GVMMR0CreateVM(pSession, pReq->cCpus, &pVM);
|
---|
799 | if (RT_SUCCESS(rc))
|
---|
800 | {
|
---|
801 | pReq->pVMR0 = pVM;
|
---|
802 | pReq->pVMR3 = pVM->pVMR3;
|
---|
803 | }
|
---|
804 | return rc;
|
---|
805 | }
|
---|
806 |
|
---|
807 |
|
---|
808 | /**
|
---|
809 | * Allocates the VM structure and registers it with GVM.
|
---|
810 | *
|
---|
811 | * The caller will become the VM owner and there by the EMT.
|
---|
812 | *
|
---|
813 | * @returns VBox status code.
|
---|
814 | * @param pSession The support driver session.
|
---|
815 | * @param cCpus Number of virtual CPUs for the new VM.
|
---|
816 | * @param ppVM Where to store the pointer to the VM structure.
|
---|
817 | *
|
---|
818 | * @thread EMT.
|
---|
819 | */
|
---|
820 | GVMMR0DECL(int) GVMMR0CreateVM(PSUPDRVSESSION pSession, uint32_t cCpus, PVMCC *ppVM)
|
---|
821 | {
|
---|
822 | LogFlow(("GVMMR0CreateVM: pSession=%p\n", pSession));
|
---|
823 | PGVMM pGVMM;
|
---|
824 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
825 |
|
---|
826 | AssertPtrReturn(ppVM, VERR_INVALID_POINTER);
|
---|
827 | *ppVM = NULL;
|
---|
828 |
|
---|
829 | if ( cCpus == 0
|
---|
830 | || cCpus > VMM_MAX_CPU_COUNT)
|
---|
831 | return VERR_INVALID_PARAMETER;
|
---|
832 |
|
---|
833 | RTNATIVETHREAD hEMT0 = RTThreadNativeSelf();
|
---|
834 | AssertReturn(hEMT0 != NIL_RTNATIVETHREAD, VERR_GVMM_BROKEN_IPRT);
|
---|
835 | RTPROCESS ProcId = RTProcSelf();
|
---|
836 | AssertReturn(ProcId != NIL_RTPROCESS, VERR_GVMM_BROKEN_IPRT);
|
---|
837 |
|
---|
838 | /*
|
---|
839 | * The whole allocation process is protected by the lock.
|
---|
840 | */
|
---|
841 | int rc = gvmmR0CreateDestroyLock(pGVMM);
|
---|
842 | AssertRCReturn(rc, rc);
|
---|
843 |
|
---|
844 | /*
|
---|
845 | * Only one VM per session.
|
---|
846 | */
|
---|
847 | if (SUPR0GetSessionVM(pSession) != NULL)
|
---|
848 | {
|
---|
849 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
850 | SUPR0Printf("GVMMR0CreateVM: The session %p already got a VM: %p\n", pSession, SUPR0GetSessionVM(pSession));
|
---|
851 | return VERR_ALREADY_EXISTS;
|
---|
852 | }
|
---|
853 |
|
---|
854 | /*
|
---|
855 | * Allocate a handle first so we don't waste resources unnecessarily.
|
---|
856 | */
|
---|
857 | uint16_t iHandle = pGVMM->iFreeHead;
|
---|
858 | if (iHandle)
|
---|
859 | {
|
---|
860 | PGVMHANDLE pHandle = &pGVMM->aHandles[iHandle];
|
---|
861 |
|
---|
862 | /* consistency checks, a bit paranoid as always. */
|
---|
863 | if ( !pHandle->pVM
|
---|
864 | && !pHandle->pGVM
|
---|
865 | && !pHandle->pvObj
|
---|
866 | && pHandle->iSelf == iHandle)
|
---|
867 | {
|
---|
868 | pHandle->pvObj = SUPR0ObjRegister(pSession, SUPDRVOBJTYPE_VM, gvmmR0HandleObjDestructor, pGVMM, pHandle);
|
---|
869 | if (pHandle->pvObj)
|
---|
870 | {
|
---|
871 | /*
|
---|
872 | * Move the handle from the free to used list and perform permission checks.
|
---|
873 | */
|
---|
874 | rc = GVMMR0_USED_EXCLUSIVE_LOCK(pGVMM);
|
---|
875 | AssertRC(rc);
|
---|
876 |
|
---|
877 | pGVMM->iFreeHead = pHandle->iNext;
|
---|
878 | pHandle->iNext = pGVMM->iUsedHead;
|
---|
879 | pGVMM->iUsedHead = iHandle;
|
---|
880 | pGVMM->cVMs++;
|
---|
881 |
|
---|
882 | pHandle->pVM = NULL;
|
---|
883 | pHandle->pGVM = NULL;
|
---|
884 | pHandle->pSession = pSession;
|
---|
885 | pHandle->hEMT0 = NIL_RTNATIVETHREAD;
|
---|
886 | pHandle->ProcId = NIL_RTPROCESS;
|
---|
887 |
|
---|
888 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
889 |
|
---|
890 | rc = SUPR0ObjVerifyAccess(pHandle->pvObj, pSession, NULL);
|
---|
891 | if (RT_SUCCESS(rc))
|
---|
892 | {
|
---|
893 | #ifdef VBOX_BUGREF_9217
|
---|
894 | /*
|
---|
895 | * Allocate memory for the VM structure (combined VM + GVM).
|
---|
896 | */
|
---|
897 | const uint32_t cbVM = RT_UOFFSETOF_DYN(GVM, aCpus[cCpus]);
|
---|
898 | const uint32_t cPages = RT_ALIGN_32(cbVM, PAGE_SIZE) >> PAGE_SHIFT;
|
---|
899 | RTR0MEMOBJ hVMMemObj = NIL_RTR0MEMOBJ;
|
---|
900 | rc = RTR0MemObjAllocPage(&hVMMemObj, cPages << PAGE_SHIFT, false /* fExecutable */);
|
---|
901 | if (RT_SUCCESS(rc))
|
---|
902 | {
|
---|
903 | PGVM pGVM = (PGVM)RTR0MemObjAddress(hVMMemObj);
|
---|
904 | AssertPtr(pGVM);
|
---|
905 |
|
---|
906 | /*
|
---|
907 | * Initialise the structure.
|
---|
908 | */
|
---|
909 | RT_BZERO(pGVM, cPages << PAGE_SHIFT);
|
---|
910 | gvmmR0InitPerVMData(pGVM, iHandle, cCpus, pSession);
|
---|
911 | GMMR0InitPerVMData(pGVM);
|
---|
912 | pGVM->gvmm.s.VMMemObj = hVMMemObj;
|
---|
913 |
|
---|
914 | /*
|
---|
915 | * Allocate page array.
|
---|
916 | * This currently have to be made available to ring-3, but this is should change eventually.
|
---|
917 | */
|
---|
918 | rc = RTR0MemObjAllocPage(&pGVM->gvmm.s.VMPagesMemObj, cPages * sizeof(SUPPAGE), false /* fExecutable */);
|
---|
919 | if (RT_SUCCESS(rc))
|
---|
920 | {
|
---|
921 | PSUPPAGE paPages = (PSUPPAGE)RTR0MemObjAddress(pGVM->gvmm.s.VMPagesMemObj); AssertPtr(paPages);
|
---|
922 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
923 | {
|
---|
924 | paPages[iPage].uReserved = 0;
|
---|
925 | paPages[iPage].Phys = RTR0MemObjGetPagePhysAddr(pGVM->gvmm.s.VMMemObj, iPage);
|
---|
926 | Assert(paPages[iPage].Phys != NIL_RTHCPHYS);
|
---|
927 | }
|
---|
928 |
|
---|
929 | /*
|
---|
930 | * Map the page array, VM and VMCPU structures into ring-3.
|
---|
931 | */
|
---|
932 | AssertCompileSizeAlignment(VM, PAGE_SIZE);
|
---|
933 | rc = RTR0MemObjMapUserEx(&pGVM->gvmm.s.VMMapObj, pGVM->gvmm.s.VMMemObj, (RTR3PTR)-1, 0,
|
---|
934 | RTMEM_PROT_READ | RTMEM_PROT_WRITE, NIL_RTR0PROCESS,
|
---|
935 | 0 /*offSub*/, sizeof(VM));
|
---|
936 | for (VMCPUID i = 0; i < cCpus && RT_SUCCESS(rc); i++)
|
---|
937 | {
|
---|
938 | AssertCompileSizeAlignment(VMCPU, PAGE_SIZE);
|
---|
939 | rc = RTR0MemObjMapUserEx(&pGVM->aCpus[i].gvmm.s.VMCpuMapObj, pGVM->gvmm.s.VMMemObj,
|
---|
940 | (RTR3PTR)-1, 0, RTMEM_PROT_READ | RTMEM_PROT_WRITE, NIL_RTR0PROCESS,
|
---|
941 | RT_UOFFSETOF_DYN(GVM, aCpus[i]), sizeof(VMCPU));
|
---|
942 | }
|
---|
943 | if (RT_SUCCESS(rc))
|
---|
944 | rc = RTR0MemObjMapUser(&pGVM->gvmm.s.VMPagesMapObj, pGVM->gvmm.s.VMPagesMemObj, (RTR3PTR)-1,
|
---|
945 | 0 /* uAlignment */, RTMEM_PROT_READ | RTMEM_PROT_WRITE,
|
---|
946 | NIL_RTR0PROCESS);
|
---|
947 | if (RT_SUCCESS(rc))
|
---|
948 | {
|
---|
949 | /*
|
---|
950 | * Initialize all the VM pointer.
|
---|
951 | */
|
---|
952 | PVMR3 pVMR3 = RTR0MemObjAddressR3(pGVM->gvmm.s.VMMapObj);
|
---|
953 | AssertPtr((void *)pVMR3);
|
---|
954 |
|
---|
955 | for (VMCPUID i = 0; i < cCpus; i++)
|
---|
956 | {
|
---|
957 | pGVM->aCpus[i].pVMR0 = pGVM;
|
---|
958 | pGVM->aCpus[i].pVMR3 = pVMR3;
|
---|
959 | pGVM->apCpusR3[i] = RTR0MemObjAddressR3(pGVM->aCpus[i].gvmm.s.VMCpuMapObj);
|
---|
960 | pGVM->aCpus[i].pVCpuR3 = pGVM->apCpusR3[i];
|
---|
961 | pGVM->apCpusR0[i] = &pGVM->aCpus[i];
|
---|
962 | AssertPtr((void *)pGVM->apCpusR3[i]);
|
---|
963 | }
|
---|
964 |
|
---|
965 | pGVM->paVMPagesR3 = RTR0MemObjAddressR3(pGVM->gvmm.s.VMPagesMapObj);
|
---|
966 | AssertPtr((void *)pGVM->paVMPagesR3);
|
---|
967 |
|
---|
968 | /*
|
---|
969 | * Complete the handle - take the UsedLock sem just to be careful.
|
---|
970 | */
|
---|
971 | rc = GVMMR0_USED_EXCLUSIVE_LOCK(pGVMM);
|
---|
972 | AssertRC(rc);
|
---|
973 |
|
---|
974 | pHandle->pVM = pGVM;
|
---|
975 | pHandle->pGVM = pGVM;
|
---|
976 | pHandle->hEMT0 = hEMT0;
|
---|
977 | pHandle->ProcId = ProcId;
|
---|
978 | pGVM->pVMR3 = pVMR3;
|
---|
979 | pGVM->aCpus[0].hEMT = hEMT0;
|
---|
980 | pGVM->aCpus[0].hNativeThreadR0 = hEMT0;
|
---|
981 | pGVMM->cEMTs += cCpus;
|
---|
982 |
|
---|
983 | /* Associate it with the session and create the context hook for EMT0. */
|
---|
984 | rc = SUPR0SetSessionVM(pSession, pGVM, pGVM);
|
---|
985 | if (RT_SUCCESS(rc))
|
---|
986 | {
|
---|
987 | rc = VMMR0ThreadCtxHookCreateForEmt(&pGVM->aCpus[0]);
|
---|
988 | if (RT_SUCCESS(rc))
|
---|
989 | {
|
---|
990 | /*
|
---|
991 | * Done!
|
---|
992 | */
|
---|
993 | VBOXVMM_R0_GVMM_VM_CREATED(pGVM, pGVM, ProcId, (void *)hEMT0, cCpus);
|
---|
994 |
|
---|
995 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
996 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
997 |
|
---|
998 | CPUMR0RegisterVCpuThread(&pGVM->aCpus[0]);
|
---|
999 |
|
---|
1000 | *ppVM = pGVM;
|
---|
1001 | Log(("GVMMR0CreateVM: pVMR3=%p pGVM=%p hGVM=%d\n", pVMR3, pGVM, iHandle));
|
---|
1002 | return VINF_SUCCESS;
|
---|
1003 | }
|
---|
1004 |
|
---|
1005 | SUPR0SetSessionVM(pSession, NULL, NULL);
|
---|
1006 | }
|
---|
1007 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
1008 | }
|
---|
1009 |
|
---|
1010 | /* Cleanup mappings. */
|
---|
1011 | if (pGVM->gvmm.s.VMMapObj != NIL_RTR0MEMOBJ)
|
---|
1012 | {
|
---|
1013 | RTR0MemObjFree(pGVM->gvmm.s.VMMapObj, false /* fFreeMappings */);
|
---|
1014 | pGVM->gvmm.s.VMMapObj = NIL_RTR0MEMOBJ;
|
---|
1015 | }
|
---|
1016 | for (VMCPUID i = 0; i < cCpus; i++)
|
---|
1017 | if (pGVM->aCpus[i].gvmm.s.VMCpuMapObj != NIL_RTR0MEMOBJ)
|
---|
1018 | {
|
---|
1019 | RTR0MemObjFree(pGVM->aCpus[i].gvmm.s.VMCpuMapObj, false /* fFreeMappings */);
|
---|
1020 | pGVM->aCpus[i].gvmm.s.VMCpuMapObj = NIL_RTR0MEMOBJ;
|
---|
1021 | }
|
---|
1022 | if (pGVM->gvmm.s.VMPagesMapObj != NIL_RTR0MEMOBJ)
|
---|
1023 | {
|
---|
1024 | RTR0MemObjFree(pGVM->gvmm.s.VMPagesMapObj, false /* fFreeMappings */);
|
---|
1025 | pGVM->gvmm.s.VMPagesMapObj = NIL_RTR0MEMOBJ;
|
---|
1026 | }
|
---|
1027 | }
|
---|
1028 | }
|
---|
1029 |
|
---|
1030 | #else
|
---|
1031 | /*
|
---|
1032 | * Allocate the global VM structure (GVM) and initialize it.
|
---|
1033 | */
|
---|
1034 | PGVM pGVM = (PGVM)RTMemAllocZ(RT_UOFFSETOF_DYN(GVM, aCpus[cCpus]));
|
---|
1035 | if (pGVM)
|
---|
1036 | {
|
---|
1037 | pGVM->u32Magic = GVM_MAGIC;
|
---|
1038 | pGVM->hSelf = iHandle;
|
---|
1039 | pGVM->pVM = NULL;
|
---|
1040 | pGVM->cCpus = cCpus;
|
---|
1041 | pGVM->pSession = pSession;
|
---|
1042 |
|
---|
1043 | gvmmR0InitPerVMData(pGVM);
|
---|
1044 | GMMR0InitPerVMData(pGVM);
|
---|
1045 |
|
---|
1046 | /*
|
---|
1047 | * Allocate the shared VM structure and associated page array.
|
---|
1048 | */
|
---|
1049 | const uint32_t cbVM = RT_UOFFSETOF_DYN(VM, aCpus[cCpus]);
|
---|
1050 | const uint32_t cPages = RT_ALIGN_32(cbVM, PAGE_SIZE) >> PAGE_SHIFT;
|
---|
1051 | rc = RTR0MemObjAllocLow(&pGVM->gvmm.s.VMMemObj, cPages << PAGE_SHIFT, false /* fExecutable */);
|
---|
1052 | if (RT_SUCCESS(rc))
|
---|
1053 | {
|
---|
1054 | PVMCC pVM = (PVMCC)RTR0MemObjAddress(pGVM->gvmm.s.VMMemObj); AssertPtr(pVM);
|
---|
1055 | memset(pVM, 0, cPages << PAGE_SHIFT);
|
---|
1056 | pVM->enmVMState = VMSTATE_CREATING;
|
---|
1057 | pVM->pVMR0 = pVM;
|
---|
1058 | pVM->pSession = pSession;
|
---|
1059 | pVM->hSelf = iHandle;
|
---|
1060 | pVM->cbSelf = cbVM;
|
---|
1061 | pVM->cCpus = cCpus;
|
---|
1062 | pVM->uCpuExecutionCap = 100; /* default is no cap. */
|
---|
1063 | AssertCompileMemberAlignment(VM, cpum, 64);
|
---|
1064 | AssertCompileMemberAlignment(VM, tm, 64);
|
---|
1065 | AssertCompileMemberAlignment(VM, aCpus, PAGE_SIZE);
|
---|
1066 |
|
---|
1067 | rc = RTR0MemObjAllocPage(&pGVM->gvmm.s.VMPagesMemObj, cPages * sizeof(SUPPAGE), false /* fExecutable */);
|
---|
1068 | if (RT_SUCCESS(rc))
|
---|
1069 | {
|
---|
1070 | PSUPPAGE paPages = (PSUPPAGE)RTR0MemObjAddress(pGVM->gvmm.s.VMPagesMemObj); AssertPtr(paPages);
|
---|
1071 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
1072 | {
|
---|
1073 | paPages[iPage].uReserved = 0;
|
---|
1074 | paPages[iPage].Phys = RTR0MemObjGetPagePhysAddr(pGVM->gvmm.s.VMMemObj, iPage);
|
---|
1075 | Assert(paPages[iPage].Phys != NIL_RTHCPHYS);
|
---|
1076 | }
|
---|
1077 |
|
---|
1078 | /*
|
---|
1079 | * Map them into ring-3.
|
---|
1080 | */
|
---|
1081 | rc = RTR0MemObjMapUser(&pGVM->gvmm.s.VMMapObj, pGVM->gvmm.s.VMMemObj, (RTR3PTR)-1, 0,
|
---|
1082 | RTMEM_PROT_READ | RTMEM_PROT_WRITE, NIL_RTR0PROCESS);
|
---|
1083 | if (RT_SUCCESS(rc))
|
---|
1084 | {
|
---|
1085 | PVMR3 pVMR3 = RTR0MemObjAddressR3(pGVM->gvmm.s.VMMapObj);
|
---|
1086 | pVM->pVMR3 = pVMR3;
|
---|
1087 | AssertPtr((void *)pVMR3);
|
---|
1088 |
|
---|
1089 | /* Initialize all the VM pointers. */
|
---|
1090 | for (VMCPUID i = 0; i < cCpus; i++)
|
---|
1091 | {
|
---|
1092 | pVM->aCpus[i].idCpu = i;
|
---|
1093 | pVM->aCpus[i].pVMR0 = pVM;
|
---|
1094 | pVM->aCpus[i].pVMR3 = pVMR3;
|
---|
1095 | pVM->aCpus[i].idHostCpu = NIL_RTCPUID;
|
---|
1096 | pVM->aCpus[i].hNativeThreadR0 = NIL_RTNATIVETHREAD;
|
---|
1097 | pVM->apCpusR3[i] = pVMR3 + RT_UOFFSETOF_DYN(VM, aCpus[i]);
|
---|
1098 | pVM->apCpusR0[i] = &pVM->aCpus[i];
|
---|
1099 | }
|
---|
1100 |
|
---|
1101 | rc = RTR0MemObjMapUser(&pGVM->gvmm.s.VMPagesMapObj, pGVM->gvmm.s.VMPagesMemObj, (RTR3PTR)-1,
|
---|
1102 | 0 /* uAlignment */, RTMEM_PROT_READ | RTMEM_PROT_WRITE,
|
---|
1103 | NIL_RTR0PROCESS);
|
---|
1104 | if (RT_SUCCESS(rc))
|
---|
1105 | {
|
---|
1106 | pVM->paVMPagesR3 = RTR0MemObjAddressR3(pGVM->gvmm.s.VMPagesMapObj);
|
---|
1107 | AssertPtr((void *)pVM->paVMPagesR3);
|
---|
1108 |
|
---|
1109 | /* complete the handle - take the UsedLock sem just to be careful. */
|
---|
1110 | rc = GVMMR0_USED_EXCLUSIVE_LOCK(pGVMM);
|
---|
1111 | AssertRC(rc);
|
---|
1112 |
|
---|
1113 | pHandle->pVM = pVM;
|
---|
1114 | pHandle->pGVM = pGVM;
|
---|
1115 | pHandle->hEMT0 = hEMT0;
|
---|
1116 | pHandle->ProcId = ProcId;
|
---|
1117 | pGVM->pVM = pVM;
|
---|
1118 | pGVM->pVMR3 = pVMR3;
|
---|
1119 | pGVM->aCpus[0].hEMT = hEMT0;
|
---|
1120 | pVM->aCpus[0].hNativeThreadR0 = hEMT0;
|
---|
1121 | pGVMM->cEMTs += cCpus;
|
---|
1122 |
|
---|
1123 | for (VMCPUID i = 0; i < cCpus; i++)
|
---|
1124 | {
|
---|
1125 | pGVM->aCpus[i].pVCpu = &pVM->aCpus[i];
|
---|
1126 | pGVM->aCpus[i].pVM = pVM;
|
---|
1127 | }
|
---|
1128 |
|
---|
1129 | /* Associate it with the session and create the context hook for EMT0. */
|
---|
1130 | rc = SUPR0SetSessionVM(pSession, pGVM, pVM);
|
---|
1131 | if (RT_SUCCESS(rc))
|
---|
1132 | {
|
---|
1133 | rc = VMMR0ThreadCtxHookCreateForEmt(&pVM->aCpus[0]);
|
---|
1134 | if (RT_SUCCESS(rc))
|
---|
1135 | {
|
---|
1136 | /*
|
---|
1137 | * Done!
|
---|
1138 | */
|
---|
1139 | VBOXVMM_R0_GVMM_VM_CREATED(pGVM, pVM, ProcId, (void *)hEMT0, cCpus);
|
---|
1140 |
|
---|
1141 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
1142 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1143 |
|
---|
1144 | CPUMR0RegisterVCpuThread(&pVM->aCpus[0]);
|
---|
1145 |
|
---|
1146 | *ppVM = pVM;
|
---|
1147 | Log(("GVMMR0CreateVM: pVM=%p pVMR3=%p pGVM=%p hGVM=%d\n", pVM, pVMR3, pGVM, iHandle));
|
---|
1148 | return VINF_SUCCESS;
|
---|
1149 | }
|
---|
1150 |
|
---|
1151 | SUPR0SetSessionVM(pSession, NULL, NULL);
|
---|
1152 | }
|
---|
1153 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
1154 | }
|
---|
1155 |
|
---|
1156 | RTR0MemObjFree(pGVM->gvmm.s.VMMapObj, false /* fFreeMappings */);
|
---|
1157 | pGVM->gvmm.s.VMMapObj = NIL_RTR0MEMOBJ;
|
---|
1158 | }
|
---|
1159 | RTR0MemObjFree(pGVM->gvmm.s.VMPagesMemObj, false /* fFreeMappings */);
|
---|
1160 | pGVM->gvmm.s.VMPagesMemObj = NIL_RTR0MEMOBJ;
|
---|
1161 | }
|
---|
1162 | RTR0MemObjFree(pGVM->gvmm.s.VMMemObj, false /* fFreeMappings */);
|
---|
1163 | pGVM->gvmm.s.VMMemObj = NIL_RTR0MEMOBJ;
|
---|
1164 | }
|
---|
1165 | }
|
---|
1166 | #endif
|
---|
1167 | }
|
---|
1168 | /* else: The user wasn't permitted to create this VM. */
|
---|
1169 |
|
---|
1170 | /*
|
---|
1171 | * The handle will be freed by gvmmR0HandleObjDestructor as we release the
|
---|
1172 | * object reference here. A little extra mess because of non-recursive lock.
|
---|
1173 | */
|
---|
1174 | void *pvObj = pHandle->pvObj;
|
---|
1175 | pHandle->pvObj = NULL;
|
---|
1176 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1177 |
|
---|
1178 | SUPR0ObjRelease(pvObj, pSession);
|
---|
1179 |
|
---|
1180 | SUPR0Printf("GVMMR0CreateVM: failed, rc=%Rrc\n", rc);
|
---|
1181 | return rc;
|
---|
1182 | }
|
---|
1183 |
|
---|
1184 | rc = VERR_NO_MEMORY;
|
---|
1185 | }
|
---|
1186 | else
|
---|
1187 | rc = VERR_GVMM_IPE_1;
|
---|
1188 | }
|
---|
1189 | else
|
---|
1190 | rc = VERR_GVM_TOO_MANY_VMS;
|
---|
1191 |
|
---|
1192 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1193 | return rc;
|
---|
1194 | }
|
---|
1195 |
|
---|
1196 |
|
---|
1197 | #ifdef VBOX_BUGREF_9217
|
---|
1198 | /**
|
---|
1199 | * Initializes the per VM data belonging to GVMM.
|
---|
1200 | *
|
---|
1201 | * @param pGVM Pointer to the global VM structure.
|
---|
1202 | */
|
---|
1203 | static void gvmmR0InitPerVMData(PGVM pGVM, int16_t hSelf, VMCPUID cCpus, PSUPDRVSESSION pSession)
|
---|
1204 | #else
|
---|
1205 | /**
|
---|
1206 | * Initializes the per VM data belonging to GVMM.
|
---|
1207 | *
|
---|
1208 | * @param pGVM Pointer to the global VM structure.
|
---|
1209 | */
|
---|
1210 | static void gvmmR0InitPerVMData(PGVM pGVM)
|
---|
1211 | #endif
|
---|
1212 | {
|
---|
1213 | AssertCompile(RT_SIZEOFMEMB(GVM,gvmm.s) <= RT_SIZEOFMEMB(GVM,gvmm.padding));
|
---|
1214 | AssertCompile(RT_SIZEOFMEMB(GVMCPU,gvmm.s) <= RT_SIZEOFMEMB(GVMCPU,gvmm.padding));
|
---|
1215 | #ifdef VBOX_BUGREF_9217
|
---|
1216 | AssertCompileMemberAlignment(VM, cpum, 64);
|
---|
1217 | AssertCompileMemberAlignment(VM, tm, 64);
|
---|
1218 |
|
---|
1219 | /* GVM: */
|
---|
1220 | pGVM->u32Magic = GVM_MAGIC;
|
---|
1221 | pGVM->hSelf = hSelf;
|
---|
1222 | pGVM->cCpus = cCpus;
|
---|
1223 | pGVM->pSession = pSession;
|
---|
1224 |
|
---|
1225 | /* VM: */
|
---|
1226 | pGVM->enmVMState = VMSTATE_CREATING;
|
---|
1227 | pGVM->pSessionUnsafe = pSession;
|
---|
1228 | pGVM->hSelfUnsafe = hSelf;
|
---|
1229 | pGVM->cCpusUnsafe = cCpus;
|
---|
1230 | pGVM->uCpuExecutionCap = 100; /* default is no cap. */
|
---|
1231 | pGVM->uStructVersion = 1;
|
---|
1232 | pGVM->cbSelf = sizeof(VM);
|
---|
1233 | pGVM->cbVCpu = sizeof(VMCPU);
|
---|
1234 | #endif
|
---|
1235 |
|
---|
1236 | /* GVMM: */
|
---|
1237 | pGVM->gvmm.s.VMMemObj = NIL_RTR0MEMOBJ;
|
---|
1238 | pGVM->gvmm.s.VMMapObj = NIL_RTR0MEMOBJ;
|
---|
1239 | pGVM->gvmm.s.VMPagesMemObj = NIL_RTR0MEMOBJ;
|
---|
1240 | pGVM->gvmm.s.VMPagesMapObj = NIL_RTR0MEMOBJ;
|
---|
1241 | pGVM->gvmm.s.fDoneVMMR0Init = false;
|
---|
1242 | pGVM->gvmm.s.fDoneVMMR0Term = false;
|
---|
1243 |
|
---|
1244 | /*
|
---|
1245 | * Per virtual CPU.
|
---|
1246 | */
|
---|
1247 | for (VMCPUID i = 0; i < pGVM->cCpus; i++)
|
---|
1248 | {
|
---|
1249 | pGVM->aCpus[i].idCpu = i;
|
---|
1250 | #ifdef VBOX_BUGREF_9217
|
---|
1251 | pGVM->aCpus[i].idCpuUnsafe = i;
|
---|
1252 | #endif
|
---|
1253 | pGVM->aCpus[i].gvmm.s.HaltEventMulti = NIL_RTSEMEVENTMULTI;
|
---|
1254 | #ifdef VBOX_BUGREF_9217
|
---|
1255 | pGVM->aCpus[i].gvmm.s.VMCpuMapObj = NIL_RTR0MEMOBJ;
|
---|
1256 | #endif
|
---|
1257 | pGVM->aCpus[i].hEMT = NIL_RTNATIVETHREAD;
|
---|
1258 | pGVM->aCpus[i].pGVM = pGVM;
|
---|
1259 | #ifndef VBOX_BUGREF_9217
|
---|
1260 | pGVM->aCpus[i].pVCpu = NULL;
|
---|
1261 | pGVM->aCpus[i].pVM = NULL;
|
---|
1262 | #endif
|
---|
1263 | #ifdef VBOX_BUGREF_9217
|
---|
1264 | pGVM->aCpus[i].idHostCpu = NIL_RTCPUID;
|
---|
1265 | pGVM->aCpus[i].iHostCpuSet = UINT32_MAX;
|
---|
1266 | pGVM->aCpus[i].hNativeThread = NIL_RTNATIVETHREAD;
|
---|
1267 | pGVM->aCpus[i].hNativeThreadR0 = NIL_RTNATIVETHREAD;
|
---|
1268 | pGVM->aCpus[i].enmState = VMCPUSTATE_STOPPED;
|
---|
1269 | #endif
|
---|
1270 | }
|
---|
1271 | }
|
---|
1272 |
|
---|
1273 |
|
---|
1274 | /**
|
---|
1275 | * Does the VM initialization.
|
---|
1276 | *
|
---|
1277 | * @returns VBox status code.
|
---|
1278 | * @param pGVM The global (ring-0) VM structure.
|
---|
1279 | */
|
---|
1280 | GVMMR0DECL(int) GVMMR0InitVM(PGVM pGVM)
|
---|
1281 | {
|
---|
1282 | LogFlow(("GVMMR0InitVM: pGVM=%p\n", pGVM));
|
---|
1283 |
|
---|
1284 | int rc = VERR_INTERNAL_ERROR_3;
|
---|
1285 | if ( !pGVM->gvmm.s.fDoneVMMR0Init
|
---|
1286 | && pGVM->aCpus[0].gvmm.s.HaltEventMulti == NIL_RTSEMEVENTMULTI)
|
---|
1287 | {
|
---|
1288 | for (VMCPUID i = 0; i < pGVM->cCpus; i++)
|
---|
1289 | {
|
---|
1290 | rc = RTSemEventMultiCreate(&pGVM->aCpus[i].gvmm.s.HaltEventMulti);
|
---|
1291 | if (RT_FAILURE(rc))
|
---|
1292 | {
|
---|
1293 | pGVM->aCpus[i].gvmm.s.HaltEventMulti = NIL_RTSEMEVENTMULTI;
|
---|
1294 | break;
|
---|
1295 | }
|
---|
1296 | }
|
---|
1297 | }
|
---|
1298 | else
|
---|
1299 | rc = VERR_WRONG_ORDER;
|
---|
1300 |
|
---|
1301 | LogFlow(("GVMMR0InitVM: returns %Rrc\n", rc));
|
---|
1302 | return rc;
|
---|
1303 | }
|
---|
1304 |
|
---|
1305 |
|
---|
1306 | /**
|
---|
1307 | * Indicates that we're done with the ring-0 initialization
|
---|
1308 | * of the VM.
|
---|
1309 | *
|
---|
1310 | * @param pGVM The global (ring-0) VM structure.
|
---|
1311 | * @thread EMT(0)
|
---|
1312 | */
|
---|
1313 | GVMMR0DECL(void) GVMMR0DoneInitVM(PGVM pGVM)
|
---|
1314 | {
|
---|
1315 | /* Set the indicator. */
|
---|
1316 | pGVM->gvmm.s.fDoneVMMR0Init = true;
|
---|
1317 | }
|
---|
1318 |
|
---|
1319 |
|
---|
1320 | /**
|
---|
1321 | * Indicates that we're doing the ring-0 termination of the VM.
|
---|
1322 | *
|
---|
1323 | * @returns true if termination hasn't been done already, false if it has.
|
---|
1324 | * @param pGVM Pointer to the global VM structure. Optional.
|
---|
1325 | * @thread EMT(0) or session cleanup thread.
|
---|
1326 | */
|
---|
1327 | GVMMR0DECL(bool) GVMMR0DoingTermVM(PGVM pGVM)
|
---|
1328 | {
|
---|
1329 | /* Validate the VM structure, state and handle. */
|
---|
1330 | AssertPtrReturn(pGVM, false);
|
---|
1331 |
|
---|
1332 | /* Set the indicator. */
|
---|
1333 | if (pGVM->gvmm.s.fDoneVMMR0Term)
|
---|
1334 | return false;
|
---|
1335 | pGVM->gvmm.s.fDoneVMMR0Term = true;
|
---|
1336 | return true;
|
---|
1337 | }
|
---|
1338 |
|
---|
1339 |
|
---|
1340 | /**
|
---|
1341 | * Destroys the VM, freeing all associated resources (the ring-0 ones anyway).
|
---|
1342 | *
|
---|
1343 | * This is call from the vmR3DestroyFinalBit and from a error path in VMR3Create,
|
---|
1344 | * and the caller is not the EMT thread, unfortunately. For security reasons, it
|
---|
1345 | * would've been nice if the caller was actually the EMT thread or that we somehow
|
---|
1346 | * could've associated the calling thread with the VM up front.
|
---|
1347 | *
|
---|
1348 | * @returns VBox status code.
|
---|
1349 | * @param pGVM The global (ring-0) VM structure.
|
---|
1350 | * @param pVM The cross context VM structure.
|
---|
1351 | *
|
---|
1352 | * @thread EMT(0) if it's associated with the VM, otherwise any thread.
|
---|
1353 | */
|
---|
1354 | GVMMR0DECL(int) GVMMR0DestroyVM(PGVM pGVM, PVMCC pVM)
|
---|
1355 | {
|
---|
1356 | LogFlow(("GVMMR0DestroyVM: pGVM=%p pVM=%p\n", pGVM, pVM));
|
---|
1357 | PGVMM pGVMM;
|
---|
1358 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
1359 |
|
---|
1360 | /*
|
---|
1361 | * Validate the VM structure, state and caller.
|
---|
1362 | */
|
---|
1363 | AssertPtrReturn(pGVM, VERR_INVALID_POINTER);
|
---|
1364 | AssertPtrReturn(pVM, VERR_INVALID_POINTER);
|
---|
1365 | AssertReturn(!((uintptr_t)pVM & PAGE_OFFSET_MASK), VERR_INVALID_POINTER);
|
---|
1366 | #ifdef VBOX_BUGREF_9217
|
---|
1367 | AssertReturn(pGVM == pVM, VERR_INVALID_POINTER);
|
---|
1368 | #else
|
---|
1369 | AssertReturn(pGVM->pVM == pVM, VERR_INVALID_POINTER);
|
---|
1370 | #endif
|
---|
1371 | AssertMsgReturn(pVM->enmVMState >= VMSTATE_CREATING && pVM->enmVMState <= VMSTATE_TERMINATED, ("%d\n", pVM->enmVMState),
|
---|
1372 | VERR_WRONG_ORDER);
|
---|
1373 |
|
---|
1374 | uint32_t hGVM = pGVM->hSelf;
|
---|
1375 | ASMCompilerBarrier();
|
---|
1376 | AssertReturn(hGVM != NIL_GVM_HANDLE, VERR_INVALID_VM_HANDLE);
|
---|
1377 | AssertReturn(hGVM < RT_ELEMENTS(pGVMM->aHandles), VERR_INVALID_VM_HANDLE);
|
---|
1378 |
|
---|
1379 | PGVMHANDLE pHandle = &pGVMM->aHandles[hGVM];
|
---|
1380 | AssertReturn(pHandle->pVM == pVM, VERR_NOT_OWNER);
|
---|
1381 |
|
---|
1382 | RTPROCESS ProcId = RTProcSelf();
|
---|
1383 | RTNATIVETHREAD hSelf = RTThreadNativeSelf();
|
---|
1384 | AssertReturn( ( pHandle->hEMT0 == hSelf
|
---|
1385 | && pHandle->ProcId == ProcId)
|
---|
1386 | || pHandle->hEMT0 == NIL_RTNATIVETHREAD, VERR_NOT_OWNER);
|
---|
1387 |
|
---|
1388 | /*
|
---|
1389 | * Lookup the handle and destroy the object.
|
---|
1390 | * Since the lock isn't recursive and we'll have to leave it before dereferencing the
|
---|
1391 | * object, we take some precautions against racing callers just in case...
|
---|
1392 | */
|
---|
1393 | int rc = gvmmR0CreateDestroyLock(pGVMM);
|
---|
1394 | AssertRC(rc);
|
---|
1395 |
|
---|
1396 | /* Be careful here because we might theoretically be racing someone else cleaning up. */
|
---|
1397 | if ( pHandle->pVM == pVM
|
---|
1398 | && ( ( pHandle->hEMT0 == hSelf
|
---|
1399 | && pHandle->ProcId == ProcId)
|
---|
1400 | || pHandle->hEMT0 == NIL_RTNATIVETHREAD)
|
---|
1401 | && VALID_PTR(pHandle->pvObj)
|
---|
1402 | && VALID_PTR(pHandle->pSession)
|
---|
1403 | && VALID_PTR(pHandle->pGVM)
|
---|
1404 | && pHandle->pGVM->u32Magic == GVM_MAGIC)
|
---|
1405 | {
|
---|
1406 | /* Check that other EMTs have deregistered. */
|
---|
1407 | uint32_t cNotDeregistered = 0;
|
---|
1408 | for (VMCPUID idCpu = 1; idCpu < pGVM->cCpus; idCpu++)
|
---|
1409 | cNotDeregistered += pGVM->aCpus[idCpu].hEMT != ~(RTNATIVETHREAD)1; /* see GVMMR0DeregisterVCpu for the value */
|
---|
1410 | if (cNotDeregistered == 0)
|
---|
1411 | {
|
---|
1412 | /* Grab the object pointer. */
|
---|
1413 | void *pvObj = pHandle->pvObj;
|
---|
1414 | pHandle->pvObj = NULL;
|
---|
1415 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1416 |
|
---|
1417 | SUPR0ObjRelease(pvObj, pHandle->pSession);
|
---|
1418 | }
|
---|
1419 | else
|
---|
1420 | {
|
---|
1421 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1422 | rc = VERR_GVMM_NOT_ALL_EMTS_DEREGISTERED;
|
---|
1423 | }
|
---|
1424 | }
|
---|
1425 | else
|
---|
1426 | {
|
---|
1427 | SUPR0Printf("GVMMR0DestroyVM: pHandle=%RKv:{.pVM=%p, .hEMT0=%p, .ProcId=%u, .pvObj=%p} pVM=%p hSelf=%p\n",
|
---|
1428 | pHandle, pHandle->pVM, pHandle->hEMT0, pHandle->ProcId, pHandle->pvObj, pVM, hSelf);
|
---|
1429 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1430 | rc = VERR_GVMM_IPE_2;
|
---|
1431 | }
|
---|
1432 |
|
---|
1433 | return rc;
|
---|
1434 | }
|
---|
1435 |
|
---|
1436 |
|
---|
1437 | /**
|
---|
1438 | * Performs VM cleanup task as part of object destruction.
|
---|
1439 | *
|
---|
1440 | * @param pGVM The GVM pointer.
|
---|
1441 | */
|
---|
1442 | static void gvmmR0CleanupVM(PGVM pGVM)
|
---|
1443 | {
|
---|
1444 | if ( pGVM->gvmm.s.fDoneVMMR0Init
|
---|
1445 | && !pGVM->gvmm.s.fDoneVMMR0Term)
|
---|
1446 | {
|
---|
1447 | if ( pGVM->gvmm.s.VMMemObj != NIL_RTR0MEMOBJ
|
---|
1448 | #ifdef VBOX_BUGREF_9217
|
---|
1449 | && RTR0MemObjAddress(pGVM->gvmm.s.VMMemObj) == pGVM
|
---|
1450 | #else
|
---|
1451 | && RTR0MemObjAddress(pGVM->gvmm.s.VMMemObj) == pGVM->pVM
|
---|
1452 | #endif
|
---|
1453 | )
|
---|
1454 | {
|
---|
1455 | LogFlow(("gvmmR0CleanupVM: Calling VMMR0TermVM\n"));
|
---|
1456 | #ifdef VBOX_BUGREF_9217
|
---|
1457 | VMMR0TermVM(pGVM, pGVM, NIL_VMCPUID);
|
---|
1458 | #else
|
---|
1459 | VMMR0TermVM(pGVM, pGVM->pVM, NIL_VMCPUID);
|
---|
1460 | #endif
|
---|
1461 | }
|
---|
1462 | else
|
---|
1463 | #ifdef VBOX_BUGREF_9217
|
---|
1464 | AssertMsgFailed(("gvmmR0CleanupVM: VMMemObj=%p pGVM=%p\n", pGVM->gvmm.s.VMMemObj, pGVM));
|
---|
1465 | #else
|
---|
1466 | AssertMsgFailed(("gvmmR0CleanupVM: VMMemObj=%p pVM=%p\n", pGVM->gvmm.s.VMMemObj, pGVM->pVM));
|
---|
1467 | #endif
|
---|
1468 | }
|
---|
1469 |
|
---|
1470 | GMMR0CleanupVM(pGVM);
|
---|
1471 | #ifdef VBOX_WITH_NEM_R0
|
---|
1472 | NEMR0CleanupVM(pGVM);
|
---|
1473 | #endif
|
---|
1474 |
|
---|
1475 | AssertCompile(NIL_RTTHREADCTXHOOK == (RTTHREADCTXHOOK)0); /* Depends on zero initialized memory working for NIL at the moment. */
|
---|
1476 | for (VMCPUID idCpu = 0; idCpu < pGVM->cCpus; idCpu++)
|
---|
1477 | {
|
---|
1478 | /** @todo Can we busy wait here for all thread-context hooks to be
|
---|
1479 | * deregistered before releasing (destroying) it? Only until we find a
|
---|
1480 | * solution for not deregistering hooks everytime we're leaving HMR0
|
---|
1481 | * context. */
|
---|
1482 | #ifdef VBOX_BUGREF_9217
|
---|
1483 | VMMR0ThreadCtxHookDestroyForEmt(&pGVM->aCpus[idCpu]);
|
---|
1484 | #else
|
---|
1485 | VMMR0ThreadCtxHookDestroyForEmt(&pGVM->pVM->aCpus[idCpu]);
|
---|
1486 | #endif
|
---|
1487 | }
|
---|
1488 | }
|
---|
1489 |
|
---|
1490 |
|
---|
1491 | /**
|
---|
1492 | * @callback_method_impl{FNSUPDRVDESTRUCTOR,VM handle destructor}
|
---|
1493 | *
|
---|
1494 | * pvUser1 is the GVM instance pointer.
|
---|
1495 | * pvUser2 is the handle pointer.
|
---|
1496 | */
|
---|
1497 | static DECLCALLBACK(void) gvmmR0HandleObjDestructor(void *pvObj, void *pvUser1, void *pvUser2)
|
---|
1498 | {
|
---|
1499 | LogFlow(("gvmmR0HandleObjDestructor: %p %p %p\n", pvObj, pvUser1, pvUser2));
|
---|
1500 |
|
---|
1501 | NOREF(pvObj);
|
---|
1502 |
|
---|
1503 | /*
|
---|
1504 | * Some quick, paranoid, input validation.
|
---|
1505 | */
|
---|
1506 | PGVMHANDLE pHandle = (PGVMHANDLE)pvUser2;
|
---|
1507 | AssertPtr(pHandle);
|
---|
1508 | PGVMM pGVMM = (PGVMM)pvUser1;
|
---|
1509 | Assert(pGVMM == g_pGVMM);
|
---|
1510 | const uint16_t iHandle = pHandle - &pGVMM->aHandles[0];
|
---|
1511 | if ( !iHandle
|
---|
1512 | || iHandle >= RT_ELEMENTS(pGVMM->aHandles)
|
---|
1513 | || iHandle != pHandle->iSelf)
|
---|
1514 | {
|
---|
1515 | SUPR0Printf("GVM: handle %d is out of range or corrupt (iSelf=%d)!\n", iHandle, pHandle->iSelf);
|
---|
1516 | return;
|
---|
1517 | }
|
---|
1518 |
|
---|
1519 | int rc = gvmmR0CreateDestroyLock(pGVMM);
|
---|
1520 | AssertRC(rc);
|
---|
1521 | rc = GVMMR0_USED_EXCLUSIVE_LOCK(pGVMM);
|
---|
1522 | AssertRC(rc);
|
---|
1523 |
|
---|
1524 | /*
|
---|
1525 | * This is a tad slow but a doubly linked list is too much hassle.
|
---|
1526 | */
|
---|
1527 | if (RT_UNLIKELY(pHandle->iNext >= RT_ELEMENTS(pGVMM->aHandles)))
|
---|
1528 | {
|
---|
1529 | SUPR0Printf("GVM: used list index %d is out of range!\n", pHandle->iNext);
|
---|
1530 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
1531 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1532 | return;
|
---|
1533 | }
|
---|
1534 |
|
---|
1535 | if (pGVMM->iUsedHead == iHandle)
|
---|
1536 | pGVMM->iUsedHead = pHandle->iNext;
|
---|
1537 | else
|
---|
1538 | {
|
---|
1539 | uint16_t iPrev = pGVMM->iUsedHead;
|
---|
1540 | int c = RT_ELEMENTS(pGVMM->aHandles) + 2;
|
---|
1541 | while (iPrev)
|
---|
1542 | {
|
---|
1543 | if (RT_UNLIKELY(iPrev >= RT_ELEMENTS(pGVMM->aHandles)))
|
---|
1544 | {
|
---|
1545 | SUPR0Printf("GVM: used list index %d is out of range!\n", iPrev);
|
---|
1546 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
1547 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1548 | return;
|
---|
1549 | }
|
---|
1550 | if (RT_UNLIKELY(c-- <= 0))
|
---|
1551 | {
|
---|
1552 | iPrev = 0;
|
---|
1553 | break;
|
---|
1554 | }
|
---|
1555 |
|
---|
1556 | if (pGVMM->aHandles[iPrev].iNext == iHandle)
|
---|
1557 | break;
|
---|
1558 | iPrev = pGVMM->aHandles[iPrev].iNext;
|
---|
1559 | }
|
---|
1560 | if (!iPrev)
|
---|
1561 | {
|
---|
1562 | SUPR0Printf("GVM: can't find the handle previous previous of %d!\n", pHandle->iSelf);
|
---|
1563 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
1564 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1565 | return;
|
---|
1566 | }
|
---|
1567 |
|
---|
1568 | Assert(pGVMM->aHandles[iPrev].iNext == iHandle);
|
---|
1569 | pGVMM->aHandles[iPrev].iNext = pHandle->iNext;
|
---|
1570 | }
|
---|
1571 | pHandle->iNext = 0;
|
---|
1572 | pGVMM->cVMs--;
|
---|
1573 |
|
---|
1574 | /*
|
---|
1575 | * Do the global cleanup round.
|
---|
1576 | */
|
---|
1577 | PGVM pGVM = pHandle->pGVM;
|
---|
1578 | if ( VALID_PTR(pGVM)
|
---|
1579 | && pGVM->u32Magic == GVM_MAGIC)
|
---|
1580 | {
|
---|
1581 | pGVMM->cEMTs -= pGVM->cCpus;
|
---|
1582 |
|
---|
1583 | if (pGVM->pSession)
|
---|
1584 | SUPR0SetSessionVM(pGVM->pSession, NULL, NULL);
|
---|
1585 |
|
---|
1586 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
1587 |
|
---|
1588 | gvmmR0CleanupVM(pGVM);
|
---|
1589 |
|
---|
1590 | /*
|
---|
1591 | * Do the GVMM cleanup - must be done last.
|
---|
1592 | */
|
---|
1593 | /* The VM and VM pages mappings/allocations. */
|
---|
1594 | if (pGVM->gvmm.s.VMPagesMapObj != NIL_RTR0MEMOBJ)
|
---|
1595 | {
|
---|
1596 | rc = RTR0MemObjFree(pGVM->gvmm.s.VMPagesMapObj, false /* fFreeMappings */); AssertRC(rc);
|
---|
1597 | pGVM->gvmm.s.VMPagesMapObj = NIL_RTR0MEMOBJ;
|
---|
1598 | }
|
---|
1599 |
|
---|
1600 | if (pGVM->gvmm.s.VMMapObj != NIL_RTR0MEMOBJ)
|
---|
1601 | {
|
---|
1602 | rc = RTR0MemObjFree(pGVM->gvmm.s.VMMapObj, false /* fFreeMappings */); AssertRC(rc);
|
---|
1603 | pGVM->gvmm.s.VMMapObj = NIL_RTR0MEMOBJ;
|
---|
1604 | }
|
---|
1605 |
|
---|
1606 | if (pGVM->gvmm.s.VMPagesMemObj != NIL_RTR0MEMOBJ)
|
---|
1607 | {
|
---|
1608 | rc = RTR0MemObjFree(pGVM->gvmm.s.VMPagesMemObj, false /* fFreeMappings */); AssertRC(rc);
|
---|
1609 | pGVM->gvmm.s.VMPagesMemObj = NIL_RTR0MEMOBJ;
|
---|
1610 | }
|
---|
1611 |
|
---|
1612 | #ifndef VBOX_BUGREF_9217
|
---|
1613 | if (pGVM->gvmm.s.VMMemObj != NIL_RTR0MEMOBJ)
|
---|
1614 | {
|
---|
1615 | rc = RTR0MemObjFree(pGVM->gvmm.s.VMMemObj, false /* fFreeMappings */); AssertRC(rc);
|
---|
1616 | pGVM->gvmm.s.VMMemObj = NIL_RTR0MEMOBJ;
|
---|
1617 | }
|
---|
1618 | #endif
|
---|
1619 |
|
---|
1620 | for (VMCPUID i = 0; i < pGVM->cCpus; i++)
|
---|
1621 | {
|
---|
1622 | if (pGVM->aCpus[i].gvmm.s.HaltEventMulti != NIL_RTSEMEVENTMULTI)
|
---|
1623 | {
|
---|
1624 | rc = RTSemEventMultiDestroy(pGVM->aCpus[i].gvmm.s.HaltEventMulti); AssertRC(rc);
|
---|
1625 | pGVM->aCpus[i].gvmm.s.HaltEventMulti = NIL_RTSEMEVENTMULTI;
|
---|
1626 | }
|
---|
1627 | #ifdef VBOX_BUGREF_9217
|
---|
1628 | if (pGVM->aCpus[i].gvmm.s.VMCpuMapObj != NIL_RTR0MEMOBJ)
|
---|
1629 | {
|
---|
1630 | rc = RTR0MemObjFree(pGVM->aCpus[i].gvmm.s.VMCpuMapObj, false /* fFreeMappings */); AssertRC(rc);
|
---|
1631 | pGVM->aCpus[i].gvmm.s.VMCpuMapObj = NIL_RTR0MEMOBJ;
|
---|
1632 | }
|
---|
1633 | #endif
|
---|
1634 | }
|
---|
1635 |
|
---|
1636 | /* the GVM structure itself. */
|
---|
1637 | pGVM->u32Magic |= UINT32_C(0x80000000);
|
---|
1638 | #ifdef VBOX_BUGREF_9217
|
---|
1639 | Assert(pGVM->gvmm.s.VMMemObj != NIL_RTR0MEMOBJ);
|
---|
1640 | rc = RTR0MemObjFree(pGVM->gvmm.s.VMMemObj, true /*fFreeMappings*/); AssertRC(rc);
|
---|
1641 | #else
|
---|
1642 | RTMemFree(pGVM);
|
---|
1643 | #endif
|
---|
1644 | pGVM = NULL;
|
---|
1645 |
|
---|
1646 | /* Re-acquire the UsedLock before freeing the handle since we're updating handle fields. */
|
---|
1647 | rc = GVMMR0_USED_EXCLUSIVE_LOCK(pGVMM);
|
---|
1648 | AssertRC(rc);
|
---|
1649 | }
|
---|
1650 | /* else: GVMMR0CreateVM cleanup. */
|
---|
1651 |
|
---|
1652 | /*
|
---|
1653 | * Free the handle.
|
---|
1654 | */
|
---|
1655 | pHandle->iNext = pGVMM->iFreeHead;
|
---|
1656 | pGVMM->iFreeHead = iHandle;
|
---|
1657 | ASMAtomicWriteNullPtr(&pHandle->pGVM);
|
---|
1658 | ASMAtomicWriteNullPtr(&pHandle->pVM);
|
---|
1659 | ASMAtomicWriteNullPtr(&pHandle->pvObj);
|
---|
1660 | ASMAtomicWriteNullPtr(&pHandle->pSession);
|
---|
1661 | ASMAtomicWriteHandle(&pHandle->hEMT0, NIL_RTNATIVETHREAD);
|
---|
1662 | ASMAtomicWriteU32(&pHandle->ProcId, NIL_RTPROCESS);
|
---|
1663 |
|
---|
1664 | GVMMR0_USED_EXCLUSIVE_UNLOCK(pGVMM);
|
---|
1665 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1666 | LogFlow(("gvmmR0HandleObjDestructor: returns\n"));
|
---|
1667 | }
|
---|
1668 |
|
---|
1669 |
|
---|
1670 | /**
|
---|
1671 | * Registers the calling thread as the EMT of a Virtual CPU.
|
---|
1672 | *
|
---|
1673 | * Note that VCPU 0 is automatically registered during VM creation.
|
---|
1674 | *
|
---|
1675 | * @returns VBox status code
|
---|
1676 | * @param pGVM The global (ring-0) VM structure.
|
---|
1677 | * @param pVM The cross context VM structure.
|
---|
1678 | * @param idCpu VCPU id to register the current thread as.
|
---|
1679 | */
|
---|
1680 | GVMMR0DECL(int) GVMMR0RegisterVCpu(PGVM pGVM, PVMCC pVM, VMCPUID idCpu)
|
---|
1681 | {
|
---|
1682 | AssertReturn(idCpu != 0, VERR_INVALID_FUNCTION);
|
---|
1683 |
|
---|
1684 | /*
|
---|
1685 | * Validate the VM structure, state and handle.
|
---|
1686 | */
|
---|
1687 | PGVMM pGVMM;
|
---|
1688 | int rc = gvmmR0ByGVMandVM(pGVM, pVM, &pGVMM, false /* fTakeUsedLock */); /** @todo take lock here. */
|
---|
1689 | if (RT_SUCCESS(rc))
|
---|
1690 | {
|
---|
1691 | if (idCpu < pGVM->cCpus)
|
---|
1692 | {
|
---|
1693 | /* Check that the EMT isn't already assigned to a thread. */
|
---|
1694 | if (pGVM->aCpus[idCpu].hEMT == NIL_RTNATIVETHREAD)
|
---|
1695 | {
|
---|
1696 | #ifdef VBOX_BUGREF_9217
|
---|
1697 | Assert(pGVM->aCpus[idCpu].hNativeThreadR0 == NIL_RTNATIVETHREAD);
|
---|
1698 | #else
|
---|
1699 | Assert(pVM->aCpus[idCpu].hNativeThreadR0 == NIL_RTNATIVETHREAD);
|
---|
1700 | #endif
|
---|
1701 |
|
---|
1702 | /* A thread may only be one EMT. */
|
---|
1703 | RTNATIVETHREAD const hNativeSelf = RTThreadNativeSelf();
|
---|
1704 | for (VMCPUID iCpu = 0; iCpu < pGVM->cCpus; iCpu++)
|
---|
1705 | AssertBreakStmt(pGVM->aCpus[iCpu].hEMT != hNativeSelf, rc = VERR_INVALID_PARAMETER);
|
---|
1706 | if (RT_SUCCESS(rc))
|
---|
1707 | {
|
---|
1708 | /*
|
---|
1709 | * Do the assignment, then try setup the hook. Undo if that fails.
|
---|
1710 | */
|
---|
1711 | #ifdef VBOX_BUGREF_9217
|
---|
1712 | pGVM->aCpus[idCpu].hNativeThreadR0 = pGVM->aCpus[idCpu].hEMT = RTThreadNativeSelf();
|
---|
1713 |
|
---|
1714 | rc = VMMR0ThreadCtxHookCreateForEmt(&pGVM->aCpus[idCpu]);
|
---|
1715 | if (RT_SUCCESS(rc))
|
---|
1716 | CPUMR0RegisterVCpuThread(&pGVM->aCpus[idCpu]);
|
---|
1717 | else
|
---|
1718 | pGVM->aCpus[idCpu].hNativeThreadR0 = pGVM->aCpus[idCpu].hEMT = NIL_RTNATIVETHREAD;
|
---|
1719 | #else
|
---|
1720 | pVM->aCpus[idCpu].hNativeThreadR0 = pGVM->aCpus[idCpu].hEMT = RTThreadNativeSelf();
|
---|
1721 |
|
---|
1722 | rc = VMMR0ThreadCtxHookCreateForEmt(&pVM->aCpus[idCpu]);
|
---|
1723 | if (RT_SUCCESS(rc))
|
---|
1724 | CPUMR0RegisterVCpuThread(&pVM->aCpus[idCpu]);
|
---|
1725 | else
|
---|
1726 | pVM->aCpus[idCpu].hNativeThreadR0 = pGVM->aCpus[idCpu].hEMT = NIL_RTNATIVETHREAD;
|
---|
1727 | #endif
|
---|
1728 | }
|
---|
1729 | }
|
---|
1730 | else
|
---|
1731 | rc = VERR_ACCESS_DENIED;
|
---|
1732 | }
|
---|
1733 | else
|
---|
1734 | rc = VERR_INVALID_CPU_ID;
|
---|
1735 | }
|
---|
1736 | return rc;
|
---|
1737 | }
|
---|
1738 |
|
---|
1739 |
|
---|
1740 | /**
|
---|
1741 | * Deregisters the calling thread as the EMT of a Virtual CPU.
|
---|
1742 | *
|
---|
1743 | * Note that VCPU 0 shall call GVMMR0DestroyVM intead of this API.
|
---|
1744 | *
|
---|
1745 | * @returns VBox status code
|
---|
1746 | * @param pGVM The global (ring-0) VM structure.
|
---|
1747 | * @param pVM The cross context VM structure.
|
---|
1748 | * @param idCpu VCPU id to register the current thread as.
|
---|
1749 | */
|
---|
1750 | GVMMR0DECL(int) GVMMR0DeregisterVCpu(PGVM pGVM, PVMCC pVM, VMCPUID idCpu)
|
---|
1751 | {
|
---|
1752 | AssertReturn(idCpu != 0, VERR_INVALID_FUNCTION);
|
---|
1753 |
|
---|
1754 | /*
|
---|
1755 | * Validate the VM structure, state and handle.
|
---|
1756 | */
|
---|
1757 | PGVMM pGVMM;
|
---|
1758 | int rc = gvmmR0ByGVMandVMandEMT(pGVM, pVM, idCpu, &pGVMM);
|
---|
1759 | if (RT_SUCCESS(rc))
|
---|
1760 | {
|
---|
1761 | /*
|
---|
1762 | * Take the destruction lock and recheck the handle state to
|
---|
1763 | * prevent racing GVMMR0DestroyVM.
|
---|
1764 | */
|
---|
1765 | gvmmR0CreateDestroyLock(pGVMM);
|
---|
1766 | uint32_t hSelf = pGVM->hSelf;
|
---|
1767 | ASMCompilerBarrier();
|
---|
1768 | if ( hSelf < RT_ELEMENTS(pGVMM->aHandles)
|
---|
1769 | && pGVMM->aHandles[hSelf].pvObj != NULL
|
---|
1770 | && pGVMM->aHandles[hSelf].pGVM == pGVM)
|
---|
1771 | {
|
---|
1772 | /*
|
---|
1773 | * Do per-EMT cleanups.
|
---|
1774 | */
|
---|
1775 | #ifdef VBOX_BUGREF_9217
|
---|
1776 | VMMR0ThreadCtxHookDestroyForEmt(&pGVM->aCpus[idCpu]);
|
---|
1777 | #else
|
---|
1778 | VMMR0ThreadCtxHookDestroyForEmt(&pVM->aCpus[idCpu]);
|
---|
1779 | #endif
|
---|
1780 |
|
---|
1781 | /*
|
---|
1782 | * Invalidate hEMT. We don't use NIL here as that would allow
|
---|
1783 | * GVMMR0RegisterVCpu to be called again, and we don't want that.
|
---|
1784 | */
|
---|
1785 | AssertCompile(~(RTNATIVETHREAD)1 != NIL_RTNATIVETHREAD);
|
---|
1786 | pGVM->aCpus[idCpu].hEMT = ~(RTNATIVETHREAD)1;
|
---|
1787 | #ifdef VBOX_BUGREF_9217
|
---|
1788 | pGVM->aCpus[idCpu].hNativeThreadR0 = NIL_RTNATIVETHREAD;
|
---|
1789 | #else
|
---|
1790 | pVM->aCpus[idCpu].hNativeThreadR0 = NIL_RTNATIVETHREAD;
|
---|
1791 | #endif
|
---|
1792 | }
|
---|
1793 |
|
---|
1794 | gvmmR0CreateDestroyUnlock(pGVMM);
|
---|
1795 | }
|
---|
1796 | return rc;
|
---|
1797 | }
|
---|
1798 |
|
---|
1799 |
|
---|
1800 | /**
|
---|
1801 | * Lookup a GVM structure by its handle.
|
---|
1802 | *
|
---|
1803 | * @returns The GVM pointer on success, NULL on failure.
|
---|
1804 | * @param hGVM The global VM handle. Asserts on bad handle.
|
---|
1805 | */
|
---|
1806 | GVMMR0DECL(PGVM) GVMMR0ByHandle(uint32_t hGVM)
|
---|
1807 | {
|
---|
1808 | PGVMM pGVMM;
|
---|
1809 | GVMM_GET_VALID_INSTANCE(pGVMM, NULL);
|
---|
1810 |
|
---|
1811 | /*
|
---|
1812 | * Validate.
|
---|
1813 | */
|
---|
1814 | AssertReturn(hGVM != NIL_GVM_HANDLE, NULL);
|
---|
1815 | AssertReturn(hGVM < RT_ELEMENTS(pGVMM->aHandles), NULL);
|
---|
1816 |
|
---|
1817 | /*
|
---|
1818 | * Look it up.
|
---|
1819 | */
|
---|
1820 | PGVMHANDLE pHandle = &pGVMM->aHandles[hGVM];
|
---|
1821 | AssertPtrReturn(pHandle->pVM, NULL);
|
---|
1822 | AssertPtrReturn(pHandle->pvObj, NULL);
|
---|
1823 | PGVM pGVM = pHandle->pGVM;
|
---|
1824 | AssertPtrReturn(pGVM, NULL);
|
---|
1825 | #ifdef VBOX_BUGREF_9217
|
---|
1826 | AssertReturn(pGVM == pHandle->pVM, NULL);
|
---|
1827 | #else
|
---|
1828 | AssertReturn(pGVM->pVM == pHandle->pVM, NULL);
|
---|
1829 | #endif
|
---|
1830 |
|
---|
1831 | return pHandle->pGVM;
|
---|
1832 | }
|
---|
1833 |
|
---|
1834 |
|
---|
1835 | /**
|
---|
1836 | * Lookup a GVM structure by the shared VM structure.
|
---|
1837 | *
|
---|
1838 | * The calling thread must be in the same process as the VM. All current lookups
|
---|
1839 | * are by threads inside the same process, so this will not be an issue.
|
---|
1840 | *
|
---|
1841 | * @returns VBox status code.
|
---|
1842 | * @param pVM The cross context VM structure.
|
---|
1843 | * @param ppGVM Where to store the GVM pointer.
|
---|
1844 | * @param ppGVMM Where to store the pointer to the GVMM instance data.
|
---|
1845 | * @param fTakeUsedLock Whether to take the used lock or not. We take it in
|
---|
1846 | * shared mode when requested.
|
---|
1847 | *
|
---|
1848 | * Be very careful if not taking the lock as it's
|
---|
1849 | * possible that the VM will disappear then!
|
---|
1850 | *
|
---|
1851 | * @remark This will not assert on an invalid pVM but try return silently.
|
---|
1852 | */
|
---|
1853 | static int gvmmR0ByVM(PVMCC pVM, PGVM *ppGVM, PGVMM *ppGVMM, bool fTakeUsedLock)
|
---|
1854 | {
|
---|
1855 | RTPROCESS ProcId = RTProcSelf();
|
---|
1856 | PGVMM pGVMM;
|
---|
1857 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
1858 |
|
---|
1859 | /*
|
---|
1860 | * Validate.
|
---|
1861 | */
|
---|
1862 | if (RT_UNLIKELY( !VALID_PTR(pVM)
|
---|
1863 | || ((uintptr_t)pVM & PAGE_OFFSET_MASK)))
|
---|
1864 | return VERR_INVALID_POINTER;
|
---|
1865 | if (RT_UNLIKELY( pVM->enmVMState < VMSTATE_CREATING
|
---|
1866 | || pVM->enmVMState >= VMSTATE_TERMINATED))
|
---|
1867 | return VERR_INVALID_POINTER;
|
---|
1868 |
|
---|
1869 | uint16_t hGVM = pVM->hSelf;
|
---|
1870 | ASMCompilerBarrier();
|
---|
1871 | if (RT_UNLIKELY( hGVM == NIL_GVM_HANDLE
|
---|
1872 | || hGVM >= RT_ELEMENTS(pGVMM->aHandles)))
|
---|
1873 | return VERR_INVALID_HANDLE;
|
---|
1874 |
|
---|
1875 | /*
|
---|
1876 | * Look it up.
|
---|
1877 | */
|
---|
1878 | PGVMHANDLE pHandle = &pGVMM->aHandles[hGVM];
|
---|
1879 | PGVM pGVM;
|
---|
1880 | if (fTakeUsedLock)
|
---|
1881 | {
|
---|
1882 | int rc = GVMMR0_USED_SHARED_LOCK(pGVMM);
|
---|
1883 | AssertRCReturn(rc, rc);
|
---|
1884 |
|
---|
1885 | pGVM = pHandle->pGVM;
|
---|
1886 | #ifdef VBOX_BUGREF_9217
|
---|
1887 | if (RT_UNLIKELY( pHandle->pVM != pVM
|
---|
1888 | || pHandle->ProcId != ProcId
|
---|
1889 | || !VALID_PTR(pHandle->pvObj)
|
---|
1890 | || !VALID_PTR(pGVM)
|
---|
1891 | || pGVM != pVM))
|
---|
1892 | #else
|
---|
1893 | if (RT_UNLIKELY( pHandle->pVM != pVM
|
---|
1894 | || pHandle->ProcId != ProcId
|
---|
1895 | || !VALID_PTR(pHandle->pvObj)
|
---|
1896 | || !VALID_PTR(pGVM)
|
---|
1897 | || pGVM->pVM != pVM))
|
---|
1898 | #endif
|
---|
1899 | {
|
---|
1900 | GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
1901 | return VERR_INVALID_HANDLE;
|
---|
1902 | }
|
---|
1903 | }
|
---|
1904 | else
|
---|
1905 | {
|
---|
1906 | if (RT_UNLIKELY(pHandle->pVM != pVM))
|
---|
1907 | return VERR_INVALID_HANDLE;
|
---|
1908 | if (RT_UNLIKELY(pHandle->ProcId != ProcId))
|
---|
1909 | return VERR_INVALID_HANDLE;
|
---|
1910 | if (RT_UNLIKELY(!VALID_PTR(pHandle->pvObj)))
|
---|
1911 | return VERR_INVALID_HANDLE;
|
---|
1912 |
|
---|
1913 | pGVM = pHandle->pGVM;
|
---|
1914 | if (RT_UNLIKELY(!VALID_PTR(pGVM)))
|
---|
1915 | return VERR_INVALID_HANDLE;
|
---|
1916 | #ifdef VBOX_BUGREF_9217
|
---|
1917 | if (RT_UNLIKELY(pGVM != pVM))
|
---|
1918 | #else
|
---|
1919 | if (RT_UNLIKELY(pGVM->pVM != pVM))
|
---|
1920 | #endif
|
---|
1921 | return VERR_INVALID_HANDLE;
|
---|
1922 | }
|
---|
1923 |
|
---|
1924 | *ppGVM = pGVM;
|
---|
1925 | *ppGVMM = pGVMM;
|
---|
1926 | return VINF_SUCCESS;
|
---|
1927 | }
|
---|
1928 |
|
---|
1929 |
|
---|
1930 | /**
|
---|
1931 | * Fast look up a GVM structure by the cross context VM structure.
|
---|
1932 | *
|
---|
1933 | * This is mainly used a glue function, so performance is .
|
---|
1934 | *
|
---|
1935 | * @returns GVM on success, NULL on failure.
|
---|
1936 | * @param pVM The cross context VM structure. ASSUMES to be
|
---|
1937 | * reasonably valid, so we can do fewer checks than in
|
---|
1938 | * gvmmR0ByVM.
|
---|
1939 | *
|
---|
1940 | * @note Do not use this on pVM structures from userland!
|
---|
1941 | */
|
---|
1942 | GVMMR0DECL(PGVM) GVMMR0FastGetGVMByVM(PVMCC pVM)
|
---|
1943 | {
|
---|
1944 | AssertPtr(pVM);
|
---|
1945 | Assert(!((uintptr_t)pVM & PAGE_OFFSET_MASK));
|
---|
1946 |
|
---|
1947 | PGVMM pGVMM;
|
---|
1948 | GVMM_GET_VALID_INSTANCE(pGVMM, NULL);
|
---|
1949 |
|
---|
1950 | /*
|
---|
1951 | * Validate.
|
---|
1952 | */
|
---|
1953 | uint16_t hGVM = pVM->hSelf;
|
---|
1954 | ASMCompilerBarrier();
|
---|
1955 | AssertReturn(hGVM != NIL_GVM_HANDLE && hGVM < RT_ELEMENTS(pGVMM->aHandles), NULL);
|
---|
1956 |
|
---|
1957 | /*
|
---|
1958 | * Look it up and check pVM against the value in the handle and GVM structures.
|
---|
1959 | */
|
---|
1960 | PGVMHANDLE pHandle = &pGVMM->aHandles[hGVM];
|
---|
1961 | AssertReturn(pHandle->pVM == pVM, NULL);
|
---|
1962 |
|
---|
1963 | PGVM pGVM = pHandle->pGVM;
|
---|
1964 | AssertPtrReturn(pGVM, NULL);
|
---|
1965 | #ifdef VBOX_BUGREF_9217
|
---|
1966 | AssertReturn(pGVM == pVM, NULL);
|
---|
1967 | #else
|
---|
1968 | AssertReturn(pGVM->pVM == pVM, NULL);
|
---|
1969 | #endif
|
---|
1970 |
|
---|
1971 | return pGVM;
|
---|
1972 | }
|
---|
1973 |
|
---|
1974 |
|
---|
1975 | /**
|
---|
1976 | * Check that the given GVM and VM structures match up.
|
---|
1977 | *
|
---|
1978 | * The calling thread must be in the same process as the VM. All current lookups
|
---|
1979 | * are by threads inside the same process, so this will not be an issue.
|
---|
1980 | *
|
---|
1981 | * @returns VBox status code.
|
---|
1982 | * @param pGVM The global (ring-0) VM structure.
|
---|
1983 | * @param pVM The cross context VM structure.
|
---|
1984 | * @param ppGVMM Where to store the pointer to the GVMM instance data.
|
---|
1985 | * @param fTakeUsedLock Whether to take the used lock or not. We take it in
|
---|
1986 | * shared mode when requested.
|
---|
1987 | *
|
---|
1988 | * Be very careful if not taking the lock as it's
|
---|
1989 | * possible that the VM will disappear then!
|
---|
1990 | *
|
---|
1991 | * @remark This will not assert on an invalid pVM but try return silently.
|
---|
1992 | */
|
---|
1993 | static int gvmmR0ByGVMandVM(PGVM pGVM, PVMCC pVM, PGVMM *ppGVMM, bool fTakeUsedLock)
|
---|
1994 | {
|
---|
1995 | /*
|
---|
1996 | * Check the pointers.
|
---|
1997 | */
|
---|
1998 | int rc;
|
---|
1999 | if (RT_LIKELY(RT_VALID_PTR(pGVM)))
|
---|
2000 | {
|
---|
2001 | if (RT_LIKELY( RT_VALID_PTR(pVM)
|
---|
2002 | && ((uintptr_t)pVM & PAGE_OFFSET_MASK) == 0))
|
---|
2003 | {
|
---|
2004 | #ifdef VBOX_BUGREF_9217
|
---|
2005 | if (RT_LIKELY(pGVM == pVM))
|
---|
2006 | #else
|
---|
2007 | if (RT_LIKELY(pGVM->pVM == pVM))
|
---|
2008 | #endif
|
---|
2009 | {
|
---|
2010 | /*
|
---|
2011 | * Get the pGVMM instance and check the VM handle.
|
---|
2012 | */
|
---|
2013 | PGVMM pGVMM;
|
---|
2014 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
2015 |
|
---|
2016 | uint16_t hGVM = pGVM->hSelf;
|
---|
2017 | if (RT_LIKELY( hGVM != NIL_GVM_HANDLE
|
---|
2018 | && hGVM < RT_ELEMENTS(pGVMM->aHandles)))
|
---|
2019 | {
|
---|
2020 | RTPROCESS const pidSelf = RTProcSelf();
|
---|
2021 | PGVMHANDLE pHandle = &pGVMM->aHandles[hGVM];
|
---|
2022 | if (fTakeUsedLock)
|
---|
2023 | {
|
---|
2024 | rc = GVMMR0_USED_SHARED_LOCK(pGVMM);
|
---|
2025 | AssertRCReturn(rc, rc);
|
---|
2026 | }
|
---|
2027 |
|
---|
2028 | if (RT_LIKELY( pHandle->pGVM == pGVM
|
---|
2029 | && pHandle->pVM == pVM
|
---|
2030 | && pHandle->ProcId == pidSelf
|
---|
2031 | && RT_VALID_PTR(pHandle->pvObj)))
|
---|
2032 | {
|
---|
2033 | /*
|
---|
2034 | * Some more VM data consistency checks.
|
---|
2035 | */
|
---|
2036 | #ifdef VBOX_BUGREF_9217
|
---|
2037 | if (RT_LIKELY( pVM->cCpus == pGVM->cCpus
|
---|
2038 | && pVM->hSelf == hGVM
|
---|
2039 | && pVM->enmVMState >= VMSTATE_CREATING
|
---|
2040 | && pVM->enmVMState <= VMSTATE_TERMINATED
|
---|
2041 | && pVM->pSelf == pVM
|
---|
2042 | ))
|
---|
2043 | #else
|
---|
2044 | if (RT_LIKELY( pVM->cCpus == pGVM->cCpus
|
---|
2045 | && pVM->hSelf == hGVM
|
---|
2046 | && pVM->enmVMState >= VMSTATE_CREATING
|
---|
2047 | && pVM->enmVMState <= VMSTATE_TERMINATED
|
---|
2048 | && pVM->pVMR0 == pVM
|
---|
2049 | ))
|
---|
2050 | #endif
|
---|
2051 | {
|
---|
2052 | *ppGVMM = pGVMM;
|
---|
2053 | return VINF_SUCCESS;
|
---|
2054 | }
|
---|
2055 | }
|
---|
2056 |
|
---|
2057 | if (fTakeUsedLock)
|
---|
2058 | GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
2059 | }
|
---|
2060 | }
|
---|
2061 | rc = VERR_INVALID_VM_HANDLE;
|
---|
2062 | }
|
---|
2063 | else
|
---|
2064 | rc = VERR_INVALID_POINTER;
|
---|
2065 | }
|
---|
2066 | else
|
---|
2067 | rc = VERR_INVALID_POINTER;
|
---|
2068 | return rc;
|
---|
2069 | }
|
---|
2070 |
|
---|
2071 |
|
---|
2072 | /**
|
---|
2073 | * Check that the given GVM and VM structures match up.
|
---|
2074 | *
|
---|
2075 | * The calling thread must be in the same process as the VM. All current lookups
|
---|
2076 | * are by threads inside the same process, so this will not be an issue.
|
---|
2077 | *
|
---|
2078 | * @returns VBox status code.
|
---|
2079 | * @param pGVM The global (ring-0) VM structure.
|
---|
2080 | * @param pVM The cross context VM structure.
|
---|
2081 | * @param idCpu The (alleged) Virtual CPU ID of the calling EMT.
|
---|
2082 | * @param ppGVMM Where to store the pointer to the GVMM instance data.
|
---|
2083 | * @thread EMT
|
---|
2084 | *
|
---|
2085 | * @remarks This will assert in all failure paths.
|
---|
2086 | */
|
---|
2087 | static int gvmmR0ByGVMandVMandEMT(PGVM pGVM, PVMCC pVM, VMCPUID idCpu, PGVMM *ppGVMM)
|
---|
2088 | {
|
---|
2089 | /*
|
---|
2090 | * Check the pointers.
|
---|
2091 | */
|
---|
2092 | AssertPtrReturn(pGVM, VERR_INVALID_POINTER);
|
---|
2093 |
|
---|
2094 | AssertPtrReturn(pVM, VERR_INVALID_POINTER);
|
---|
2095 | AssertReturn(((uintptr_t)pVM & PAGE_OFFSET_MASK) == 0, VERR_INVALID_POINTER);
|
---|
2096 | #ifdef VBOX_BUGREF_9217
|
---|
2097 | AssertReturn(pGVM == pVM, VERR_INVALID_VM_HANDLE);
|
---|
2098 | #else
|
---|
2099 | AssertReturn(pGVM->pVM == pVM, VERR_INVALID_VM_HANDLE);
|
---|
2100 | #endif
|
---|
2101 |
|
---|
2102 |
|
---|
2103 | /*
|
---|
2104 | * Get the pGVMM instance and check the VM handle.
|
---|
2105 | */
|
---|
2106 | PGVMM pGVMM;
|
---|
2107 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
2108 |
|
---|
2109 | uint16_t hGVM = pGVM->hSelf;
|
---|
2110 | ASMCompilerBarrier();
|
---|
2111 | AssertReturn( hGVM != NIL_GVM_HANDLE
|
---|
2112 | && hGVM < RT_ELEMENTS(pGVMM->aHandles), VERR_INVALID_VM_HANDLE);
|
---|
2113 |
|
---|
2114 | RTPROCESS const pidSelf = RTProcSelf();
|
---|
2115 | PGVMHANDLE pHandle = &pGVMM->aHandles[hGVM];
|
---|
2116 | AssertReturn( pHandle->pGVM == pGVM
|
---|
2117 | && pHandle->pVM == pVM
|
---|
2118 | && pHandle->ProcId == pidSelf
|
---|
2119 | && RT_VALID_PTR(pHandle->pvObj),
|
---|
2120 | VERR_INVALID_HANDLE);
|
---|
2121 |
|
---|
2122 | /*
|
---|
2123 | * Check the EMT claim.
|
---|
2124 | */
|
---|
2125 | RTNATIVETHREAD const hAllegedEMT = RTThreadNativeSelf();
|
---|
2126 | AssertReturn(idCpu < pGVM->cCpus, VERR_INVALID_CPU_ID);
|
---|
2127 | AssertReturn(pGVM->aCpus[idCpu].hEMT == hAllegedEMT, VERR_NOT_OWNER);
|
---|
2128 |
|
---|
2129 | /*
|
---|
2130 | * Some more VM data consistency checks.
|
---|
2131 | */
|
---|
2132 | AssertReturn(pVM->cCpus == pGVM->cCpus, VERR_INCONSISTENT_VM_HANDLE);
|
---|
2133 | AssertReturn(pVM->hSelf == hGVM, VERR_INCONSISTENT_VM_HANDLE);
|
---|
2134 | #ifndef VBOX_BUGREF_9217
|
---|
2135 | AssertReturn(pVM->pVMR0 == pVM, VERR_INCONSISTENT_VM_HANDLE);
|
---|
2136 | #endif
|
---|
2137 | AssertReturn( pVM->enmVMState >= VMSTATE_CREATING
|
---|
2138 | && pVM->enmVMState <= VMSTATE_TERMINATED, VERR_INCONSISTENT_VM_HANDLE);
|
---|
2139 |
|
---|
2140 | *ppGVMM = pGVMM;
|
---|
2141 | return VINF_SUCCESS;
|
---|
2142 | }
|
---|
2143 |
|
---|
2144 |
|
---|
2145 | /**
|
---|
2146 | * Validates a GVM/VM pair.
|
---|
2147 | *
|
---|
2148 | * @returns VBox status code.
|
---|
2149 | * @param pGVM The global (ring-0) VM structure.
|
---|
2150 | * @param pVM The cross context VM structure.
|
---|
2151 | */
|
---|
2152 | GVMMR0DECL(int) GVMMR0ValidateGVMandVM(PGVM pGVM, PVMCC pVM)
|
---|
2153 | {
|
---|
2154 | PGVMM pGVMM;
|
---|
2155 | return gvmmR0ByGVMandVM(pGVM, pVM, &pGVMM, false /*fTakeUsedLock*/);
|
---|
2156 | }
|
---|
2157 |
|
---|
2158 |
|
---|
2159 |
|
---|
2160 | /**
|
---|
2161 | * Validates a GVM/VM/EMT combo.
|
---|
2162 | *
|
---|
2163 | * @returns VBox status code.
|
---|
2164 | * @param pGVM The global (ring-0) VM structure.
|
---|
2165 | * @param pVM The cross context VM structure.
|
---|
2166 | * @param idCpu The Virtual CPU ID of the calling EMT.
|
---|
2167 | * @thread EMT(idCpu)
|
---|
2168 | */
|
---|
2169 | GVMMR0DECL(int) GVMMR0ValidateGVMandVMandEMT(PGVM pGVM, PVMCC pVM, VMCPUID idCpu)
|
---|
2170 | {
|
---|
2171 | PGVMM pGVMM;
|
---|
2172 | return gvmmR0ByGVMandVMandEMT(pGVM, pVM, idCpu, &pGVMM);
|
---|
2173 | }
|
---|
2174 |
|
---|
2175 |
|
---|
2176 | /**
|
---|
2177 | * Looks up the VM belonging to the specified EMT thread.
|
---|
2178 | *
|
---|
2179 | * This is used by the assertion machinery in VMMR0.cpp to avoid causing
|
---|
2180 | * unnecessary kernel panics when the EMT thread hits an assertion. The
|
---|
2181 | * call may or not be an EMT thread.
|
---|
2182 | *
|
---|
2183 | * @returns Pointer to the VM on success, NULL on failure.
|
---|
2184 | * @param hEMT The native thread handle of the EMT.
|
---|
2185 | * NIL_RTNATIVETHREAD means the current thread
|
---|
2186 | */
|
---|
2187 | GVMMR0DECL(PVMCC) GVMMR0GetVMByEMT(RTNATIVETHREAD hEMT)
|
---|
2188 | {
|
---|
2189 | /*
|
---|
2190 | * No Assertions here as we're usually called in a AssertMsgN or
|
---|
2191 | * RTAssert* context.
|
---|
2192 | */
|
---|
2193 | PGVMM pGVMM = g_pGVMM;
|
---|
2194 | if ( !VALID_PTR(pGVMM)
|
---|
2195 | || pGVMM->u32Magic != GVMM_MAGIC)
|
---|
2196 | return NULL;
|
---|
2197 |
|
---|
2198 | if (hEMT == NIL_RTNATIVETHREAD)
|
---|
2199 | hEMT = RTThreadNativeSelf();
|
---|
2200 | RTPROCESS ProcId = RTProcSelf();
|
---|
2201 |
|
---|
2202 | /*
|
---|
2203 | * Search the handles in a linear fashion as we don't dare to take the lock (assert).
|
---|
2204 | */
|
---|
2205 | /** @todo introduce some pid hash table here, please. */
|
---|
2206 | for (unsigned i = 1; i < RT_ELEMENTS(pGVMM->aHandles); i++)
|
---|
2207 | {
|
---|
2208 | if ( pGVMM->aHandles[i].iSelf == i
|
---|
2209 | && pGVMM->aHandles[i].ProcId == ProcId
|
---|
2210 | && VALID_PTR(pGVMM->aHandles[i].pvObj)
|
---|
2211 | && VALID_PTR(pGVMM->aHandles[i].pVM)
|
---|
2212 | && VALID_PTR(pGVMM->aHandles[i].pGVM))
|
---|
2213 | {
|
---|
2214 | if (pGVMM->aHandles[i].hEMT0 == hEMT)
|
---|
2215 | return pGVMM->aHandles[i].pVM;
|
---|
2216 |
|
---|
2217 | /* This is fearly safe with the current process per VM approach. */
|
---|
2218 | PGVM pGVM = pGVMM->aHandles[i].pGVM;
|
---|
2219 | VMCPUID const cCpus = pGVM->cCpus;
|
---|
2220 | ASMCompilerBarrier();
|
---|
2221 | if ( cCpus < 1
|
---|
2222 | || cCpus > VMM_MAX_CPU_COUNT)
|
---|
2223 | continue;
|
---|
2224 | for (VMCPUID idCpu = 1; idCpu < cCpus; idCpu++)
|
---|
2225 | if (pGVM->aCpus[idCpu].hEMT == hEMT)
|
---|
2226 | return pGVMM->aHandles[i].pVM;
|
---|
2227 | }
|
---|
2228 | }
|
---|
2229 | return NULL;
|
---|
2230 | }
|
---|
2231 |
|
---|
2232 |
|
---|
2233 | /**
|
---|
2234 | * Looks up the GVMCPU belonging to the specified EMT thread.
|
---|
2235 | *
|
---|
2236 | * This is used by the assertion machinery in VMMR0.cpp to avoid causing
|
---|
2237 | * unnecessary kernel panics when the EMT thread hits an assertion. The
|
---|
2238 | * call may or not be an EMT thread.
|
---|
2239 | *
|
---|
2240 | * @returns Pointer to the VM on success, NULL on failure.
|
---|
2241 | * @param hEMT The native thread handle of the EMT.
|
---|
2242 | * NIL_RTNATIVETHREAD means the current thread
|
---|
2243 | */
|
---|
2244 | GVMMR0DECL(PGVMCPU) GVMMR0GetGVCpuByEMT(RTNATIVETHREAD hEMT)
|
---|
2245 | {
|
---|
2246 | /*
|
---|
2247 | * No Assertions here as we're usually called in a AssertMsgN,
|
---|
2248 | * RTAssert*, Log and LogRel contexts.
|
---|
2249 | */
|
---|
2250 | PGVMM pGVMM = g_pGVMM;
|
---|
2251 | if ( !VALID_PTR(pGVMM)
|
---|
2252 | || pGVMM->u32Magic != GVMM_MAGIC)
|
---|
2253 | return NULL;
|
---|
2254 |
|
---|
2255 | if (hEMT == NIL_RTNATIVETHREAD)
|
---|
2256 | hEMT = RTThreadNativeSelf();
|
---|
2257 | RTPROCESS ProcId = RTProcSelf();
|
---|
2258 |
|
---|
2259 | /*
|
---|
2260 | * Search the handles in a linear fashion as we don't dare to take the lock (assert).
|
---|
2261 | */
|
---|
2262 | /** @todo introduce some pid hash table here, please. */
|
---|
2263 | for (unsigned i = 1; i < RT_ELEMENTS(pGVMM->aHandles); i++)
|
---|
2264 | {
|
---|
2265 | if ( pGVMM->aHandles[i].iSelf == i
|
---|
2266 | && pGVMM->aHandles[i].ProcId == ProcId
|
---|
2267 | && VALID_PTR(pGVMM->aHandles[i].pvObj)
|
---|
2268 | && VALID_PTR(pGVMM->aHandles[i].pVM)
|
---|
2269 | && VALID_PTR(pGVMM->aHandles[i].pGVM))
|
---|
2270 | {
|
---|
2271 | PGVM pGVM = pGVMM->aHandles[i].pGVM;
|
---|
2272 | if (pGVMM->aHandles[i].hEMT0 == hEMT)
|
---|
2273 | return &pGVM->aCpus[0];
|
---|
2274 |
|
---|
2275 | /* This is fearly safe with the current process per VM approach. */
|
---|
2276 | VMCPUID const cCpus = pGVM->cCpus;
|
---|
2277 | ASMCompilerBarrier();
|
---|
2278 | ASMCompilerBarrier();
|
---|
2279 | if ( cCpus < 1
|
---|
2280 | || cCpus > VMM_MAX_CPU_COUNT)
|
---|
2281 | continue;
|
---|
2282 | for (VMCPUID idCpu = 1; idCpu < cCpus; idCpu++)
|
---|
2283 | if (pGVM->aCpus[idCpu].hEMT == hEMT)
|
---|
2284 | return &pGVM->aCpus[idCpu];
|
---|
2285 | }
|
---|
2286 | }
|
---|
2287 | return NULL;
|
---|
2288 | }
|
---|
2289 |
|
---|
2290 |
|
---|
2291 | /**
|
---|
2292 | * This is will wake up expired and soon-to-be expired VMs.
|
---|
2293 | *
|
---|
2294 | * @returns Number of VMs that has been woken up.
|
---|
2295 | * @param pGVMM Pointer to the GVMM instance data.
|
---|
2296 | * @param u64Now The current time.
|
---|
2297 | */
|
---|
2298 | static unsigned gvmmR0SchedDoWakeUps(PGVMM pGVMM, uint64_t u64Now)
|
---|
2299 | {
|
---|
2300 | /*
|
---|
2301 | * Skip this if we've got disabled because of high resolution wakeups or by
|
---|
2302 | * the user.
|
---|
2303 | */
|
---|
2304 | if (!pGVMM->fDoEarlyWakeUps)
|
---|
2305 | return 0;
|
---|
2306 |
|
---|
2307 | /** @todo Rewrite this algorithm. See performance defect XYZ. */
|
---|
2308 |
|
---|
2309 | /*
|
---|
2310 | * A cheap optimization to stop wasting so much time here on big setups.
|
---|
2311 | */
|
---|
2312 | const uint64_t uNsEarlyWakeUp2 = u64Now + pGVMM->nsEarlyWakeUp2;
|
---|
2313 | if ( pGVMM->cHaltedEMTs == 0
|
---|
2314 | || uNsEarlyWakeUp2 > pGVMM->uNsNextEmtWakeup)
|
---|
2315 | return 0;
|
---|
2316 |
|
---|
2317 | /*
|
---|
2318 | * Only one thread doing this at a time.
|
---|
2319 | */
|
---|
2320 | if (!ASMAtomicCmpXchgBool(&pGVMM->fDoingEarlyWakeUps, true, false))
|
---|
2321 | return 0;
|
---|
2322 |
|
---|
2323 | /*
|
---|
2324 | * The first pass will wake up VMs which have actually expired
|
---|
2325 | * and look for VMs that should be woken up in the 2nd and 3rd passes.
|
---|
2326 | */
|
---|
2327 | const uint64_t uNsEarlyWakeUp1 = u64Now + pGVMM->nsEarlyWakeUp1;
|
---|
2328 | uint64_t u64Min = UINT64_MAX;
|
---|
2329 | unsigned cWoken = 0;
|
---|
2330 | unsigned cHalted = 0;
|
---|
2331 | unsigned cTodo2nd = 0;
|
---|
2332 | unsigned cTodo3rd = 0;
|
---|
2333 | for (unsigned i = pGVMM->iUsedHead, cGuard = 0;
|
---|
2334 | i != NIL_GVM_HANDLE && i < RT_ELEMENTS(pGVMM->aHandles);
|
---|
2335 | i = pGVMM->aHandles[i].iNext)
|
---|
2336 | {
|
---|
2337 | PGVM pCurGVM = pGVMM->aHandles[i].pGVM;
|
---|
2338 | if ( VALID_PTR(pCurGVM)
|
---|
2339 | && pCurGVM->u32Magic == GVM_MAGIC)
|
---|
2340 | {
|
---|
2341 | for (VMCPUID idCpu = 0; idCpu < pCurGVM->cCpus; idCpu++)
|
---|
2342 | {
|
---|
2343 | PGVMCPU pCurGVCpu = &pCurGVM->aCpus[idCpu];
|
---|
2344 | uint64_t u64 = ASMAtomicUoReadU64(&pCurGVCpu->gvmm.s.u64HaltExpire);
|
---|
2345 | if (u64)
|
---|
2346 | {
|
---|
2347 | if (u64 <= u64Now)
|
---|
2348 | {
|
---|
2349 | if (ASMAtomicXchgU64(&pCurGVCpu->gvmm.s.u64HaltExpire, 0))
|
---|
2350 | {
|
---|
2351 | int rc = RTSemEventMultiSignal(pCurGVCpu->gvmm.s.HaltEventMulti);
|
---|
2352 | AssertRC(rc);
|
---|
2353 | cWoken++;
|
---|
2354 | }
|
---|
2355 | }
|
---|
2356 | else
|
---|
2357 | {
|
---|
2358 | cHalted++;
|
---|
2359 | if (u64 <= uNsEarlyWakeUp1)
|
---|
2360 | cTodo2nd++;
|
---|
2361 | else if (u64 <= uNsEarlyWakeUp2)
|
---|
2362 | cTodo3rd++;
|
---|
2363 | else if (u64 < u64Min)
|
---|
2364 | u64 = u64Min;
|
---|
2365 | }
|
---|
2366 | }
|
---|
2367 | }
|
---|
2368 | }
|
---|
2369 | AssertLogRelBreak(cGuard++ < RT_ELEMENTS(pGVMM->aHandles));
|
---|
2370 | }
|
---|
2371 |
|
---|
2372 | if (cTodo2nd)
|
---|
2373 | {
|
---|
2374 | for (unsigned i = pGVMM->iUsedHead, cGuard = 0;
|
---|
2375 | i != NIL_GVM_HANDLE && i < RT_ELEMENTS(pGVMM->aHandles);
|
---|
2376 | i = pGVMM->aHandles[i].iNext)
|
---|
2377 | {
|
---|
2378 | PGVM pCurGVM = pGVMM->aHandles[i].pGVM;
|
---|
2379 | if ( VALID_PTR(pCurGVM)
|
---|
2380 | && pCurGVM->u32Magic == GVM_MAGIC)
|
---|
2381 | {
|
---|
2382 | for (VMCPUID idCpu = 0; idCpu < pCurGVM->cCpus; idCpu++)
|
---|
2383 | {
|
---|
2384 | PGVMCPU pCurGVCpu = &pCurGVM->aCpus[idCpu];
|
---|
2385 | uint64_t u64 = ASMAtomicUoReadU64(&pCurGVCpu->gvmm.s.u64HaltExpire);
|
---|
2386 | if ( u64
|
---|
2387 | && u64 <= uNsEarlyWakeUp1)
|
---|
2388 | {
|
---|
2389 | if (ASMAtomicXchgU64(&pCurGVCpu->gvmm.s.u64HaltExpire, 0))
|
---|
2390 | {
|
---|
2391 | int rc = RTSemEventMultiSignal(pCurGVCpu->gvmm.s.HaltEventMulti);
|
---|
2392 | AssertRC(rc);
|
---|
2393 | cWoken++;
|
---|
2394 | }
|
---|
2395 | }
|
---|
2396 | }
|
---|
2397 | }
|
---|
2398 | AssertLogRelBreak(cGuard++ < RT_ELEMENTS(pGVMM->aHandles));
|
---|
2399 | }
|
---|
2400 | }
|
---|
2401 |
|
---|
2402 | if (cTodo3rd)
|
---|
2403 | {
|
---|
2404 | for (unsigned i = pGVMM->iUsedHead, cGuard = 0;
|
---|
2405 | i != NIL_GVM_HANDLE && i < RT_ELEMENTS(pGVMM->aHandles);
|
---|
2406 | i = pGVMM->aHandles[i].iNext)
|
---|
2407 | {
|
---|
2408 | PGVM pCurGVM = pGVMM->aHandles[i].pGVM;
|
---|
2409 | if ( VALID_PTR(pCurGVM)
|
---|
2410 | && pCurGVM->u32Magic == GVM_MAGIC)
|
---|
2411 | {
|
---|
2412 | for (VMCPUID idCpu = 0; idCpu < pCurGVM->cCpus; idCpu++)
|
---|
2413 | {
|
---|
2414 | PGVMCPU pCurGVCpu = &pCurGVM->aCpus[idCpu];
|
---|
2415 | uint64_t u64 = ASMAtomicUoReadU64(&pCurGVCpu->gvmm.s.u64HaltExpire);
|
---|
2416 | if ( u64
|
---|
2417 | && u64 <= uNsEarlyWakeUp2)
|
---|
2418 | {
|
---|
2419 | if (ASMAtomicXchgU64(&pCurGVCpu->gvmm.s.u64HaltExpire, 0))
|
---|
2420 | {
|
---|
2421 | int rc = RTSemEventMultiSignal(pCurGVCpu->gvmm.s.HaltEventMulti);
|
---|
2422 | AssertRC(rc);
|
---|
2423 | cWoken++;
|
---|
2424 | }
|
---|
2425 | }
|
---|
2426 | }
|
---|
2427 | }
|
---|
2428 | AssertLogRelBreak(cGuard++ < RT_ELEMENTS(pGVMM->aHandles));
|
---|
2429 | }
|
---|
2430 | }
|
---|
2431 |
|
---|
2432 | /*
|
---|
2433 | * Set the minimum value.
|
---|
2434 | */
|
---|
2435 | pGVMM->uNsNextEmtWakeup = u64Min;
|
---|
2436 |
|
---|
2437 | ASMAtomicWriteBool(&pGVMM->fDoingEarlyWakeUps, false);
|
---|
2438 | return cWoken;
|
---|
2439 | }
|
---|
2440 |
|
---|
2441 |
|
---|
2442 | /**
|
---|
2443 | * Halt the EMT thread.
|
---|
2444 | *
|
---|
2445 | * @returns VINF_SUCCESS normal wakeup (timeout or kicked by other thread).
|
---|
2446 | * VERR_INTERRUPTED if a signal was scheduled for the thread.
|
---|
2447 | * @param pGVM The global (ring-0) VM structure.
|
---|
2448 | * @param pVM The cross context VM structure.
|
---|
2449 | * @param pGVCpu The global (ring-0) CPU structure of the calling
|
---|
2450 | * EMT.
|
---|
2451 | * @param u64ExpireGipTime The time for the sleep to expire expressed as GIP time.
|
---|
2452 | * @thread EMT(pGVCpu).
|
---|
2453 | */
|
---|
2454 | GVMMR0DECL(int) GVMMR0SchedHalt(PGVM pGVM, PVMCC pVM, PGVMCPU pGVCpu, uint64_t u64ExpireGipTime)
|
---|
2455 | {
|
---|
2456 | LogFlow(("GVMMR0SchedHalt: pGVM=%p pVM=%p pGVCpu=%p(%d) u64ExpireGipTime=%#RX64\n",
|
---|
2457 | pGVM, pVM, pGVCpu, pGVCpu->idCpu, u64ExpireGipTime));
|
---|
2458 | GVMM_CHECK_SMAP_SETUP();
|
---|
2459 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2460 |
|
---|
2461 | PGVMM pGVMM;
|
---|
2462 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
2463 |
|
---|
2464 | pGVM->gvmm.s.StatsSched.cHaltCalls++;
|
---|
2465 | Assert(!pGVCpu->gvmm.s.u64HaltExpire);
|
---|
2466 |
|
---|
2467 | /*
|
---|
2468 | * If we're doing early wake-ups, we must take the UsedList lock before we
|
---|
2469 | * start querying the current time.
|
---|
2470 | * Note! Interrupts must NOT be disabled at this point because we ask for GIP time!
|
---|
2471 | */
|
---|
2472 | bool const fDoEarlyWakeUps = pGVMM->fDoEarlyWakeUps;
|
---|
2473 | if (fDoEarlyWakeUps)
|
---|
2474 | {
|
---|
2475 | int rc2 = GVMMR0_USED_SHARED_LOCK(pGVMM); AssertRC(rc2);
|
---|
2476 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2477 | }
|
---|
2478 |
|
---|
2479 | pGVCpu->gvmm.s.iCpuEmt = ASMGetApicId();
|
---|
2480 |
|
---|
2481 | /* GIP hack: We might are frequently sleeping for short intervals where the
|
---|
2482 | difference between GIP and system time matters on systems with high resolution
|
---|
2483 | system time. So, convert the input from GIP to System time in that case. */
|
---|
2484 | Assert(ASMGetFlags() & X86_EFL_IF);
|
---|
2485 | const uint64_t u64NowSys = RTTimeSystemNanoTS();
|
---|
2486 | const uint64_t u64NowGip = RTTimeNanoTS();
|
---|
2487 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2488 |
|
---|
2489 | if (fDoEarlyWakeUps)
|
---|
2490 | {
|
---|
2491 | pGVM->gvmm.s.StatsSched.cHaltWakeUps += gvmmR0SchedDoWakeUps(pGVMM, u64NowGip);
|
---|
2492 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2493 | }
|
---|
2494 |
|
---|
2495 | /*
|
---|
2496 | * Go to sleep if we must...
|
---|
2497 | * Cap the sleep time to 1 second to be on the safe side.
|
---|
2498 | */
|
---|
2499 | int rc;
|
---|
2500 | uint64_t cNsInterval = u64ExpireGipTime - u64NowGip;
|
---|
2501 | if ( u64NowGip < u64ExpireGipTime
|
---|
2502 | && cNsInterval >= (pGVMM->cEMTs > pGVMM->cEMTsMeansCompany
|
---|
2503 | ? pGVMM->nsMinSleepCompany
|
---|
2504 | : pGVMM->nsMinSleepAlone))
|
---|
2505 | {
|
---|
2506 | pGVM->gvmm.s.StatsSched.cHaltBlocking++;
|
---|
2507 | if (cNsInterval > RT_NS_1SEC)
|
---|
2508 | u64ExpireGipTime = u64NowGip + RT_NS_1SEC;
|
---|
2509 | ASMAtomicWriteU64(&pGVCpu->gvmm.s.u64HaltExpire, u64ExpireGipTime);
|
---|
2510 | ASMAtomicIncU32(&pGVMM->cHaltedEMTs);
|
---|
2511 | if (fDoEarlyWakeUps)
|
---|
2512 | {
|
---|
2513 | if (u64ExpireGipTime < pGVMM->uNsNextEmtWakeup)
|
---|
2514 | pGVMM->uNsNextEmtWakeup = u64ExpireGipTime;
|
---|
2515 | GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
2516 | }
|
---|
2517 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2518 |
|
---|
2519 | rc = RTSemEventMultiWaitEx(pGVCpu->gvmm.s.HaltEventMulti,
|
---|
2520 | RTSEMWAIT_FLAGS_ABSOLUTE | RTSEMWAIT_FLAGS_NANOSECS | RTSEMWAIT_FLAGS_INTERRUPTIBLE,
|
---|
2521 | u64NowGip > u64NowSys ? u64ExpireGipTime : u64NowSys + cNsInterval);
|
---|
2522 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2523 |
|
---|
2524 | ASMAtomicWriteU64(&pGVCpu->gvmm.s.u64HaltExpire, 0);
|
---|
2525 | ASMAtomicDecU32(&pGVMM->cHaltedEMTs);
|
---|
2526 |
|
---|
2527 | /* Reset the semaphore to try prevent a few false wake-ups. */
|
---|
2528 | if (rc == VINF_SUCCESS)
|
---|
2529 | {
|
---|
2530 | RTSemEventMultiReset(pGVCpu->gvmm.s.HaltEventMulti);
|
---|
2531 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2532 | }
|
---|
2533 | else if (rc == VERR_TIMEOUT)
|
---|
2534 | {
|
---|
2535 | pGVM->gvmm.s.StatsSched.cHaltTimeouts++;
|
---|
2536 | rc = VINF_SUCCESS;
|
---|
2537 | }
|
---|
2538 | }
|
---|
2539 | else
|
---|
2540 | {
|
---|
2541 | pGVM->gvmm.s.StatsSched.cHaltNotBlocking++;
|
---|
2542 | if (fDoEarlyWakeUps)
|
---|
2543 | GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
2544 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2545 | RTSemEventMultiReset(pGVCpu->gvmm.s.HaltEventMulti);
|
---|
2546 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2547 | rc = VINF_SUCCESS;
|
---|
2548 | }
|
---|
2549 |
|
---|
2550 | return rc;
|
---|
2551 | }
|
---|
2552 |
|
---|
2553 |
|
---|
2554 | /**
|
---|
2555 | * Halt the EMT thread.
|
---|
2556 | *
|
---|
2557 | * @returns VINF_SUCCESS normal wakeup (timeout or kicked by other thread).
|
---|
2558 | * VERR_INTERRUPTED if a signal was scheduled for the thread.
|
---|
2559 | * @param pGVM The global (ring-0) VM structure.
|
---|
2560 | * @param pVM The cross context VM structure.
|
---|
2561 | * @param idCpu The Virtual CPU ID of the calling EMT.
|
---|
2562 | * @param u64ExpireGipTime The time for the sleep to expire expressed as GIP time.
|
---|
2563 | * @thread EMT(idCpu).
|
---|
2564 | */
|
---|
2565 | GVMMR0DECL(int) GVMMR0SchedHaltReq(PGVM pGVM, PVMCC pVM, VMCPUID idCpu, uint64_t u64ExpireGipTime)
|
---|
2566 | {
|
---|
2567 | GVMM_CHECK_SMAP_SETUP();
|
---|
2568 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2569 | PGVMM pGVMM;
|
---|
2570 | int rc = gvmmR0ByGVMandVMandEMT(pGVM, pVM, idCpu, &pGVMM);
|
---|
2571 | if (RT_SUCCESS(rc))
|
---|
2572 | {
|
---|
2573 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2574 | rc = GVMMR0SchedHalt(pGVM, pVM, &pGVM->aCpus[idCpu], u64ExpireGipTime);
|
---|
2575 | }
|
---|
2576 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2577 | return rc;
|
---|
2578 | }
|
---|
2579 |
|
---|
2580 |
|
---|
2581 |
|
---|
2582 | /**
|
---|
2583 | * Worker for GVMMR0SchedWakeUp and GVMMR0SchedWakeUpAndPokeCpus that wakes up
|
---|
2584 | * the a sleeping EMT.
|
---|
2585 | *
|
---|
2586 | * @retval VINF_SUCCESS if successfully woken up.
|
---|
2587 | * @retval VINF_GVM_NOT_BLOCKED if the EMT wasn't blocked.
|
---|
2588 | *
|
---|
2589 | * @param pGVM The global (ring-0) VM structure.
|
---|
2590 | * @param pGVCpu The global (ring-0) VCPU structure.
|
---|
2591 | */
|
---|
2592 | DECLINLINE(int) gvmmR0SchedWakeUpOne(PGVM pGVM, PGVMCPU pGVCpu)
|
---|
2593 | {
|
---|
2594 | pGVM->gvmm.s.StatsSched.cWakeUpCalls++;
|
---|
2595 |
|
---|
2596 | /*
|
---|
2597 | * Signal the semaphore regardless of whether it's current blocked on it.
|
---|
2598 | *
|
---|
2599 | * The reason for this is that there is absolutely no way we can be 100%
|
---|
2600 | * certain that it isn't *about* go to go to sleep on it and just got
|
---|
2601 | * delayed a bit en route. So, we will always signal the semaphore when
|
---|
2602 | * the it is flagged as halted in the VMM.
|
---|
2603 | */
|
---|
2604 | /** @todo we can optimize some of that by means of the pVCpu->enmState now. */
|
---|
2605 | int rc;
|
---|
2606 | if (pGVCpu->gvmm.s.u64HaltExpire)
|
---|
2607 | {
|
---|
2608 | rc = VINF_SUCCESS;
|
---|
2609 | ASMAtomicWriteU64(&pGVCpu->gvmm.s.u64HaltExpire, 0);
|
---|
2610 | }
|
---|
2611 | else
|
---|
2612 | {
|
---|
2613 | rc = VINF_GVM_NOT_BLOCKED;
|
---|
2614 | pGVM->gvmm.s.StatsSched.cWakeUpNotHalted++;
|
---|
2615 | }
|
---|
2616 |
|
---|
2617 | int rc2 = RTSemEventMultiSignal(pGVCpu->gvmm.s.HaltEventMulti);
|
---|
2618 | AssertRC(rc2);
|
---|
2619 |
|
---|
2620 | return rc;
|
---|
2621 | }
|
---|
2622 |
|
---|
2623 |
|
---|
2624 | /**
|
---|
2625 | * Wakes up the halted EMT thread so it can service a pending request.
|
---|
2626 | *
|
---|
2627 | * @returns VBox status code.
|
---|
2628 | * @retval VINF_SUCCESS if successfully woken up.
|
---|
2629 | * @retval VINF_GVM_NOT_BLOCKED if the EMT wasn't blocked.
|
---|
2630 | *
|
---|
2631 | * @param pGVM The global (ring-0) VM structure.
|
---|
2632 | * @param pVM The cross context VM structure.
|
---|
2633 | * @param idCpu The Virtual CPU ID of the EMT to wake up.
|
---|
2634 | * @param fTakeUsedLock Take the used lock or not
|
---|
2635 | * @thread Any but EMT(idCpu).
|
---|
2636 | */
|
---|
2637 | GVMMR0DECL(int) GVMMR0SchedWakeUpEx(PGVM pGVM, PVMCC pVM, VMCPUID idCpu, bool fTakeUsedLock)
|
---|
2638 | {
|
---|
2639 | GVMM_CHECK_SMAP_SETUP();
|
---|
2640 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2641 |
|
---|
2642 | /*
|
---|
2643 | * Validate input and take the UsedLock.
|
---|
2644 | */
|
---|
2645 | PGVMM pGVMM;
|
---|
2646 | int rc = gvmmR0ByGVMandVM(pGVM, pVM, &pGVMM, fTakeUsedLock);
|
---|
2647 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2648 | if (RT_SUCCESS(rc))
|
---|
2649 | {
|
---|
2650 | if (idCpu < pGVM->cCpus)
|
---|
2651 | {
|
---|
2652 | /*
|
---|
2653 | * Do the actual job.
|
---|
2654 | */
|
---|
2655 | rc = gvmmR0SchedWakeUpOne(pGVM, &pGVM->aCpus[idCpu]);
|
---|
2656 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2657 |
|
---|
2658 | if (fTakeUsedLock && pGVMM->fDoEarlyWakeUps)
|
---|
2659 | {
|
---|
2660 | /*
|
---|
2661 | * While we're here, do a round of scheduling.
|
---|
2662 | */
|
---|
2663 | Assert(ASMGetFlags() & X86_EFL_IF);
|
---|
2664 | const uint64_t u64Now = RTTimeNanoTS(); /* (GIP time) */
|
---|
2665 | pGVM->gvmm.s.StatsSched.cWakeUpWakeUps += gvmmR0SchedDoWakeUps(pGVMM, u64Now);
|
---|
2666 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2667 | }
|
---|
2668 | }
|
---|
2669 | else
|
---|
2670 | rc = VERR_INVALID_CPU_ID;
|
---|
2671 |
|
---|
2672 | if (fTakeUsedLock)
|
---|
2673 | {
|
---|
2674 | int rc2 = GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
2675 | AssertRC(rc2);
|
---|
2676 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2677 | }
|
---|
2678 | }
|
---|
2679 |
|
---|
2680 | LogFlow(("GVMMR0SchedWakeUpEx: returns %Rrc\n", rc));
|
---|
2681 | return rc;
|
---|
2682 | }
|
---|
2683 |
|
---|
2684 |
|
---|
2685 | /**
|
---|
2686 | * Wakes up the halted EMT thread so it can service a pending request.
|
---|
2687 | *
|
---|
2688 | * @returns VBox status code.
|
---|
2689 | * @retval VINF_SUCCESS if successfully woken up.
|
---|
2690 | * @retval VINF_GVM_NOT_BLOCKED if the EMT wasn't blocked.
|
---|
2691 | *
|
---|
2692 | * @param pGVM The global (ring-0) VM structure.
|
---|
2693 | * @param pVM The cross context VM structure.
|
---|
2694 | * @param idCpu The Virtual CPU ID of the EMT to wake up.
|
---|
2695 | * @thread Any but EMT(idCpu).
|
---|
2696 | */
|
---|
2697 | GVMMR0DECL(int) GVMMR0SchedWakeUp(PGVM pGVM, PVMCC pVM, VMCPUID idCpu)
|
---|
2698 | {
|
---|
2699 | return GVMMR0SchedWakeUpEx(pGVM, pVM, idCpu, true /* fTakeUsedLock */);
|
---|
2700 | }
|
---|
2701 |
|
---|
2702 |
|
---|
2703 | /**
|
---|
2704 | * Wakes up the halted EMT thread so it can service a pending request, no GVM
|
---|
2705 | * parameter and no used locking.
|
---|
2706 | *
|
---|
2707 | * @returns VBox status code.
|
---|
2708 | * @retval VINF_SUCCESS if successfully woken up.
|
---|
2709 | * @retval VINF_GVM_NOT_BLOCKED if the EMT wasn't blocked.
|
---|
2710 | *
|
---|
2711 | * @param pVM The cross context VM structure.
|
---|
2712 | * @param idCpu The Virtual CPU ID of the EMT to wake up.
|
---|
2713 | * @thread Any but EMT(idCpu).
|
---|
2714 | * @deprecated Don't use in new code if possible! Use the GVM variant.
|
---|
2715 | */
|
---|
2716 | GVMMR0DECL(int) GVMMR0SchedWakeUpNoGVMNoLock(PVMCC pVM, VMCPUID idCpu)
|
---|
2717 | {
|
---|
2718 | GVMM_CHECK_SMAP_SETUP();
|
---|
2719 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2720 | PGVM pGVM;
|
---|
2721 | PGVMM pGVMM;
|
---|
2722 | int rc = gvmmR0ByVM(pVM, &pGVM, &pGVMM, false /*fTakeUsedLock*/);
|
---|
2723 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2724 | if (RT_SUCCESS(rc))
|
---|
2725 | rc = GVMMR0SchedWakeUpEx(pGVM, pVM, idCpu, false /*fTakeUsedLock*/);
|
---|
2726 | return rc;
|
---|
2727 | }
|
---|
2728 |
|
---|
2729 |
|
---|
2730 | /**
|
---|
2731 | * Worker common to GVMMR0SchedPoke and GVMMR0SchedWakeUpAndPokeCpus that pokes
|
---|
2732 | * the Virtual CPU if it's still busy executing guest code.
|
---|
2733 | *
|
---|
2734 | * @returns VBox status code.
|
---|
2735 | * @retval VINF_SUCCESS if poked successfully.
|
---|
2736 | * @retval VINF_GVM_NOT_BUSY_IN_GC if the EMT wasn't busy in GC.
|
---|
2737 | *
|
---|
2738 | * @param pGVM The global (ring-0) VM structure.
|
---|
2739 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2740 | */
|
---|
2741 | DECLINLINE(int) gvmmR0SchedPokeOne(PGVM pGVM, PVMCPUCC pVCpu)
|
---|
2742 | {
|
---|
2743 | pGVM->gvmm.s.StatsSched.cPokeCalls++;
|
---|
2744 |
|
---|
2745 | RTCPUID idHostCpu = pVCpu->idHostCpu;
|
---|
2746 | if ( idHostCpu == NIL_RTCPUID
|
---|
2747 | || VMCPU_GET_STATE(pVCpu) != VMCPUSTATE_STARTED_EXEC)
|
---|
2748 | {
|
---|
2749 | pGVM->gvmm.s.StatsSched.cPokeNotBusy++;
|
---|
2750 | return VINF_GVM_NOT_BUSY_IN_GC;
|
---|
2751 | }
|
---|
2752 |
|
---|
2753 | /* Note: this function is not implemented on Darwin and Linux (kernel < 2.6.19) */
|
---|
2754 | RTMpPokeCpu(idHostCpu);
|
---|
2755 | return VINF_SUCCESS;
|
---|
2756 | }
|
---|
2757 |
|
---|
2758 |
|
---|
2759 | /**
|
---|
2760 | * Pokes an EMT if it's still busy running guest code.
|
---|
2761 | *
|
---|
2762 | * @returns VBox status code.
|
---|
2763 | * @retval VINF_SUCCESS if poked successfully.
|
---|
2764 | * @retval VINF_GVM_NOT_BUSY_IN_GC if the EMT wasn't busy in GC.
|
---|
2765 | *
|
---|
2766 | * @param pGVM The global (ring-0) VM structure.
|
---|
2767 | * @param pVM The cross context VM structure.
|
---|
2768 | * @param idCpu The ID of the virtual CPU to poke.
|
---|
2769 | * @param fTakeUsedLock Take the used lock or not
|
---|
2770 | */
|
---|
2771 | GVMMR0DECL(int) GVMMR0SchedPokeEx(PGVM pGVM, PVMCC pVM, VMCPUID idCpu, bool fTakeUsedLock)
|
---|
2772 | {
|
---|
2773 | /*
|
---|
2774 | * Validate input and take the UsedLock.
|
---|
2775 | */
|
---|
2776 | PGVMM pGVMM;
|
---|
2777 | int rc = gvmmR0ByGVMandVM(pGVM, pVM, &pGVMM, fTakeUsedLock);
|
---|
2778 | if (RT_SUCCESS(rc))
|
---|
2779 | {
|
---|
2780 | if (idCpu < pGVM->cCpus)
|
---|
2781 | #ifdef VBOX_BUGREF_9217
|
---|
2782 | rc = gvmmR0SchedPokeOne(pGVM, &pGVM->aCpus[idCpu]);
|
---|
2783 | #else
|
---|
2784 | rc = gvmmR0SchedPokeOne(pGVM, &pVM->aCpus[idCpu]);
|
---|
2785 | #endif
|
---|
2786 | else
|
---|
2787 | rc = VERR_INVALID_CPU_ID;
|
---|
2788 |
|
---|
2789 | if (fTakeUsedLock)
|
---|
2790 | {
|
---|
2791 | int rc2 = GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
2792 | AssertRC(rc2);
|
---|
2793 | }
|
---|
2794 | }
|
---|
2795 |
|
---|
2796 | LogFlow(("GVMMR0SchedWakeUpAndPokeCpus: returns %Rrc\n", rc));
|
---|
2797 | return rc;
|
---|
2798 | }
|
---|
2799 |
|
---|
2800 |
|
---|
2801 | /**
|
---|
2802 | * Pokes an EMT if it's still busy running guest code.
|
---|
2803 | *
|
---|
2804 | * @returns VBox status code.
|
---|
2805 | * @retval VINF_SUCCESS if poked successfully.
|
---|
2806 | * @retval VINF_GVM_NOT_BUSY_IN_GC if the EMT wasn't busy in GC.
|
---|
2807 | *
|
---|
2808 | * @param pGVM The global (ring-0) VM structure.
|
---|
2809 | * @param pVM The cross context VM structure.
|
---|
2810 | * @param idCpu The ID of the virtual CPU to poke.
|
---|
2811 | */
|
---|
2812 | GVMMR0DECL(int) GVMMR0SchedPoke(PGVM pGVM, PVMCC pVM, VMCPUID idCpu)
|
---|
2813 | {
|
---|
2814 | return GVMMR0SchedPokeEx(pGVM, pVM, idCpu, true /* fTakeUsedLock */);
|
---|
2815 | }
|
---|
2816 |
|
---|
2817 |
|
---|
2818 | /**
|
---|
2819 | * Pokes an EMT if it's still busy running guest code, no GVM parameter and no
|
---|
2820 | * used locking.
|
---|
2821 | *
|
---|
2822 | * @returns VBox status code.
|
---|
2823 | * @retval VINF_SUCCESS if poked successfully.
|
---|
2824 | * @retval VINF_GVM_NOT_BUSY_IN_GC if the EMT wasn't busy in GC.
|
---|
2825 | *
|
---|
2826 | * @param pVM The cross context VM structure.
|
---|
2827 | * @param idCpu The ID of the virtual CPU to poke.
|
---|
2828 | *
|
---|
2829 | * @deprecated Don't use in new code if possible! Use the GVM variant.
|
---|
2830 | */
|
---|
2831 | GVMMR0DECL(int) GVMMR0SchedPokeNoGVMNoLock(PVMCC pVM, VMCPUID idCpu)
|
---|
2832 | {
|
---|
2833 | PGVM pGVM;
|
---|
2834 | PGVMM pGVMM;
|
---|
2835 | int rc = gvmmR0ByVM(pVM, &pGVM, &pGVMM, false /*fTakeUsedLock*/);
|
---|
2836 | if (RT_SUCCESS(rc))
|
---|
2837 | {
|
---|
2838 | if (idCpu < pGVM->cCpus)
|
---|
2839 | #ifdef VBOX_BUGREF_9217
|
---|
2840 | rc = gvmmR0SchedPokeOne(pGVM, &pGVM->aCpus[idCpu]);
|
---|
2841 | #else
|
---|
2842 | rc = gvmmR0SchedPokeOne(pGVM, &pVM->aCpus[idCpu]);
|
---|
2843 | #endif
|
---|
2844 | else
|
---|
2845 | rc = VERR_INVALID_CPU_ID;
|
---|
2846 | }
|
---|
2847 | return rc;
|
---|
2848 | }
|
---|
2849 |
|
---|
2850 |
|
---|
2851 | /**
|
---|
2852 | * Wakes up a set of halted EMT threads so they can service pending request.
|
---|
2853 | *
|
---|
2854 | * @returns VBox status code, no informational stuff.
|
---|
2855 | *
|
---|
2856 | * @param pGVM The global (ring-0) VM structure.
|
---|
2857 | * @param pVM The cross context VM structure.
|
---|
2858 | * @param pSleepSet The set of sleepers to wake up.
|
---|
2859 | * @param pPokeSet The set of CPUs to poke.
|
---|
2860 | */
|
---|
2861 | GVMMR0DECL(int) GVMMR0SchedWakeUpAndPokeCpus(PGVM pGVM, PVMCC pVM, PCVMCPUSET pSleepSet, PCVMCPUSET pPokeSet)
|
---|
2862 | {
|
---|
2863 | AssertPtrReturn(pSleepSet, VERR_INVALID_POINTER);
|
---|
2864 | AssertPtrReturn(pPokeSet, VERR_INVALID_POINTER);
|
---|
2865 | GVMM_CHECK_SMAP_SETUP();
|
---|
2866 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2867 | RTNATIVETHREAD hSelf = RTThreadNativeSelf();
|
---|
2868 |
|
---|
2869 | /*
|
---|
2870 | * Validate input and take the UsedLock.
|
---|
2871 | */
|
---|
2872 | PGVMM pGVMM;
|
---|
2873 | int rc = gvmmR0ByGVMandVM(pGVM, pVM, &pGVMM, true /* fTakeUsedLock */);
|
---|
2874 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2875 | if (RT_SUCCESS(rc))
|
---|
2876 | {
|
---|
2877 | rc = VINF_SUCCESS;
|
---|
2878 | VMCPUID idCpu = pGVM->cCpus;
|
---|
2879 | while (idCpu-- > 0)
|
---|
2880 | {
|
---|
2881 | /* Don't try poke or wake up ourselves. */
|
---|
2882 | if (pGVM->aCpus[idCpu].hEMT == hSelf)
|
---|
2883 | continue;
|
---|
2884 |
|
---|
2885 | /* just ignore errors for now. */
|
---|
2886 | if (VMCPUSET_IS_PRESENT(pSleepSet, idCpu))
|
---|
2887 | {
|
---|
2888 | gvmmR0SchedWakeUpOne(pGVM, &pGVM->aCpus[idCpu]);
|
---|
2889 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2890 | }
|
---|
2891 | else if (VMCPUSET_IS_PRESENT(pPokeSet, idCpu))
|
---|
2892 | {
|
---|
2893 | #ifdef VBOX_BUGREF_9217
|
---|
2894 | gvmmR0SchedPokeOne(pGVM, &pGVM->aCpus[idCpu]);
|
---|
2895 | #else
|
---|
2896 | gvmmR0SchedPokeOne(pGVM, &pVM->aCpus[idCpu]);
|
---|
2897 | #endif
|
---|
2898 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2899 | }
|
---|
2900 | }
|
---|
2901 |
|
---|
2902 | int rc2 = GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
2903 | AssertRC(rc2);
|
---|
2904 | GVMM_CHECK_SMAP_CHECK2(pVM, RT_NOTHING);
|
---|
2905 | }
|
---|
2906 |
|
---|
2907 | LogFlow(("GVMMR0SchedWakeUpAndPokeCpus: returns %Rrc\n", rc));
|
---|
2908 | return rc;
|
---|
2909 | }
|
---|
2910 |
|
---|
2911 |
|
---|
2912 | /**
|
---|
2913 | * VMMR0 request wrapper for GVMMR0SchedWakeUpAndPokeCpus.
|
---|
2914 | *
|
---|
2915 | * @returns see GVMMR0SchedWakeUpAndPokeCpus.
|
---|
2916 | * @param pGVM The global (ring-0) VM structure.
|
---|
2917 | * @param pVM The cross context VM structure.
|
---|
2918 | * @param pReq Pointer to the request packet.
|
---|
2919 | */
|
---|
2920 | GVMMR0DECL(int) GVMMR0SchedWakeUpAndPokeCpusReq(PGVM pGVM, PVMCC pVM, PGVMMSCHEDWAKEUPANDPOKECPUSREQ pReq)
|
---|
2921 | {
|
---|
2922 | /*
|
---|
2923 | * Validate input and pass it on.
|
---|
2924 | */
|
---|
2925 | AssertPtrReturn(pReq, VERR_INVALID_POINTER);
|
---|
2926 | AssertMsgReturn(pReq->Hdr.cbReq == sizeof(*pReq), ("%#x != %#x\n", pReq->Hdr.cbReq, sizeof(*pReq)), VERR_INVALID_PARAMETER);
|
---|
2927 |
|
---|
2928 | return GVMMR0SchedWakeUpAndPokeCpus(pGVM, pVM, &pReq->SleepSet, &pReq->PokeSet);
|
---|
2929 | }
|
---|
2930 |
|
---|
2931 |
|
---|
2932 |
|
---|
2933 | /**
|
---|
2934 | * Poll the schedule to see if someone else should get a chance to run.
|
---|
2935 | *
|
---|
2936 | * This is a bit hackish and will not work too well if the machine is
|
---|
2937 | * under heavy load from non-VM processes.
|
---|
2938 | *
|
---|
2939 | * @returns VINF_SUCCESS if not yielded.
|
---|
2940 | * VINF_GVM_YIELDED if an attempt to switch to a different VM task was made.
|
---|
2941 | * @param pGVM The global (ring-0) VM structure.
|
---|
2942 | * @param pVM The cross context VM structure.
|
---|
2943 | * @param idCpu The Virtual CPU ID of the calling EMT.
|
---|
2944 | * @param fYield Whether to yield or not.
|
---|
2945 | * This is for when we're spinning in the halt loop.
|
---|
2946 | * @thread EMT(idCpu).
|
---|
2947 | */
|
---|
2948 | GVMMR0DECL(int) GVMMR0SchedPoll(PGVM pGVM, PVMCC pVM, VMCPUID idCpu, bool fYield)
|
---|
2949 | {
|
---|
2950 | /*
|
---|
2951 | * Validate input.
|
---|
2952 | */
|
---|
2953 | PGVMM pGVMM;
|
---|
2954 | int rc = gvmmR0ByGVMandVMandEMT(pGVM, pVM, idCpu, &pGVMM);
|
---|
2955 | if (RT_SUCCESS(rc))
|
---|
2956 | {
|
---|
2957 | /*
|
---|
2958 | * We currently only implement helping doing wakeups (fYield = false), so don't
|
---|
2959 | * bother taking the lock if gvmmR0SchedDoWakeUps is not going to do anything.
|
---|
2960 | */
|
---|
2961 | if (!fYield && pGVMM->fDoEarlyWakeUps)
|
---|
2962 | {
|
---|
2963 | rc = GVMMR0_USED_SHARED_LOCK(pGVMM); AssertRC(rc);
|
---|
2964 | pGVM->gvmm.s.StatsSched.cPollCalls++;
|
---|
2965 |
|
---|
2966 | Assert(ASMGetFlags() & X86_EFL_IF);
|
---|
2967 | const uint64_t u64Now = RTTimeNanoTS(); /* (GIP time) */
|
---|
2968 |
|
---|
2969 | pGVM->gvmm.s.StatsSched.cPollWakeUps += gvmmR0SchedDoWakeUps(pGVMM, u64Now);
|
---|
2970 |
|
---|
2971 | GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
2972 | }
|
---|
2973 | /*
|
---|
2974 | * Not quite sure what we could do here...
|
---|
2975 | */
|
---|
2976 | else if (fYield)
|
---|
2977 | rc = VERR_NOT_IMPLEMENTED; /** @todo implement this... */
|
---|
2978 | else
|
---|
2979 | rc = VINF_SUCCESS;
|
---|
2980 | }
|
---|
2981 |
|
---|
2982 | LogFlow(("GVMMR0SchedWakeUp: returns %Rrc\n", rc));
|
---|
2983 | return rc;
|
---|
2984 | }
|
---|
2985 |
|
---|
2986 |
|
---|
2987 | #ifdef GVMM_SCHED_WITH_PPT
|
---|
2988 | /**
|
---|
2989 | * Timer callback for the periodic preemption timer.
|
---|
2990 | *
|
---|
2991 | * @param pTimer The timer handle.
|
---|
2992 | * @param pvUser Pointer to the per cpu structure.
|
---|
2993 | * @param iTick The current tick.
|
---|
2994 | */
|
---|
2995 | static DECLCALLBACK(void) gvmmR0SchedPeriodicPreemptionTimerCallback(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
|
---|
2996 | {
|
---|
2997 | PGVMMHOSTCPU pCpu = (PGVMMHOSTCPU)pvUser;
|
---|
2998 | NOREF(pTimer); NOREF(iTick);
|
---|
2999 |
|
---|
3000 | /*
|
---|
3001 | * Termination check
|
---|
3002 | */
|
---|
3003 | if (pCpu->u32Magic != GVMMHOSTCPU_MAGIC)
|
---|
3004 | return;
|
---|
3005 |
|
---|
3006 | /*
|
---|
3007 | * Do the house keeping.
|
---|
3008 | */
|
---|
3009 | RTSpinlockAcquire(pCpu->Ppt.hSpinlock);
|
---|
3010 |
|
---|
3011 | if (++pCpu->Ppt.iTickHistorization >= pCpu->Ppt.cTicksHistoriziationInterval)
|
---|
3012 | {
|
---|
3013 | /*
|
---|
3014 | * Historicize the max frequency.
|
---|
3015 | */
|
---|
3016 | uint32_t iHzHistory = ++pCpu->Ppt.iHzHistory % RT_ELEMENTS(pCpu->Ppt.aHzHistory);
|
---|
3017 | pCpu->Ppt.aHzHistory[iHzHistory] = pCpu->Ppt.uDesiredHz;
|
---|
3018 | pCpu->Ppt.iTickHistorization = 0;
|
---|
3019 | pCpu->Ppt.uDesiredHz = 0;
|
---|
3020 |
|
---|
3021 | /*
|
---|
3022 | * Check if the current timer frequency.
|
---|
3023 | */
|
---|
3024 | uint32_t uHistMaxHz = 0;
|
---|
3025 | for (uint32_t i = 0; i < RT_ELEMENTS(pCpu->Ppt.aHzHistory); i++)
|
---|
3026 | if (pCpu->Ppt.aHzHistory[i] > uHistMaxHz)
|
---|
3027 | uHistMaxHz = pCpu->Ppt.aHzHistory[i];
|
---|
3028 | if (uHistMaxHz == pCpu->Ppt.uTimerHz)
|
---|
3029 | RTSpinlockRelease(pCpu->Ppt.hSpinlock);
|
---|
3030 | else if (uHistMaxHz)
|
---|
3031 | {
|
---|
3032 | /*
|
---|
3033 | * Reprogram it.
|
---|
3034 | */
|
---|
3035 | pCpu->Ppt.cChanges++;
|
---|
3036 | pCpu->Ppt.iTickHistorization = 0;
|
---|
3037 | pCpu->Ppt.uTimerHz = uHistMaxHz;
|
---|
3038 | uint32_t const cNsInterval = RT_NS_1SEC / uHistMaxHz;
|
---|
3039 | pCpu->Ppt.cNsInterval = cNsInterval;
|
---|
3040 | if (cNsInterval < GVMMHOSTCPU_PPT_HIST_INTERVAL_NS)
|
---|
3041 | pCpu->Ppt.cTicksHistoriziationInterval = ( GVMMHOSTCPU_PPT_HIST_INTERVAL_NS
|
---|
3042 | + GVMMHOSTCPU_PPT_HIST_INTERVAL_NS / 2 - 1)
|
---|
3043 | / cNsInterval;
|
---|
3044 | else
|
---|
3045 | pCpu->Ppt.cTicksHistoriziationInterval = 1;
|
---|
3046 | RTSpinlockRelease(pCpu->Ppt.hSpinlock);
|
---|
3047 |
|
---|
3048 | /*SUPR0Printf("Cpu%u: change to %u Hz / %u ns\n", pCpu->idxCpuSet, uHistMaxHz, cNsInterval);*/
|
---|
3049 | RTTimerChangeInterval(pTimer, cNsInterval);
|
---|
3050 | }
|
---|
3051 | else
|
---|
3052 | {
|
---|
3053 | /*
|
---|
3054 | * Stop it.
|
---|
3055 | */
|
---|
3056 | pCpu->Ppt.fStarted = false;
|
---|
3057 | pCpu->Ppt.uTimerHz = 0;
|
---|
3058 | pCpu->Ppt.cNsInterval = 0;
|
---|
3059 | RTSpinlockRelease(pCpu->Ppt.hSpinlock);
|
---|
3060 |
|
---|
3061 | /*SUPR0Printf("Cpu%u: stopping (%u Hz)\n", pCpu->idxCpuSet, uHistMaxHz);*/
|
---|
3062 | RTTimerStop(pTimer);
|
---|
3063 | }
|
---|
3064 | }
|
---|
3065 | else
|
---|
3066 | RTSpinlockRelease(pCpu->Ppt.hSpinlock);
|
---|
3067 | }
|
---|
3068 | #endif /* GVMM_SCHED_WITH_PPT */
|
---|
3069 |
|
---|
3070 |
|
---|
3071 | /**
|
---|
3072 | * Updates the periodic preemption timer for the calling CPU.
|
---|
3073 | *
|
---|
3074 | * The caller must have disabled preemption!
|
---|
3075 | * The caller must check that the host can do high resolution timers.
|
---|
3076 | *
|
---|
3077 | * @param pVM The cross context VM structure.
|
---|
3078 | * @param idHostCpu The current host CPU id.
|
---|
3079 | * @param uHz The desired frequency.
|
---|
3080 | */
|
---|
3081 | GVMMR0DECL(void) GVMMR0SchedUpdatePeriodicPreemptionTimer(PVMCC pVM, RTCPUID idHostCpu, uint32_t uHz)
|
---|
3082 | {
|
---|
3083 | NOREF(pVM);
|
---|
3084 | #ifdef GVMM_SCHED_WITH_PPT
|
---|
3085 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
3086 | Assert(RTTimerCanDoHighResolution());
|
---|
3087 |
|
---|
3088 | /*
|
---|
3089 | * Resolve the per CPU data.
|
---|
3090 | */
|
---|
3091 | uint32_t iCpu = RTMpCpuIdToSetIndex(idHostCpu);
|
---|
3092 | PGVMM pGVMM = g_pGVMM;
|
---|
3093 | if ( !VALID_PTR(pGVMM)
|
---|
3094 | || pGVMM->u32Magic != GVMM_MAGIC)
|
---|
3095 | return;
|
---|
3096 | AssertMsgReturnVoid(iCpu < pGVMM->cHostCpus, ("iCpu=%d cHostCpus=%d\n", iCpu, pGVMM->cHostCpus));
|
---|
3097 | PGVMMHOSTCPU pCpu = &pGVMM->aHostCpus[iCpu];
|
---|
3098 | AssertMsgReturnVoid( pCpu->u32Magic == GVMMHOSTCPU_MAGIC
|
---|
3099 | && pCpu->idCpu == idHostCpu,
|
---|
3100 | ("u32Magic=%#x idCpu=% idHostCpu=%d\n", pCpu->u32Magic, pCpu->idCpu, idHostCpu));
|
---|
3101 |
|
---|
3102 | /*
|
---|
3103 | * Check whether we need to do anything about the timer.
|
---|
3104 | * We have to be a little bit careful since we might be race the timer
|
---|
3105 | * callback here.
|
---|
3106 | */
|
---|
3107 | if (uHz > 16384)
|
---|
3108 | uHz = 16384; /** @todo add a query method for this! */
|
---|
3109 | if (RT_UNLIKELY( uHz > ASMAtomicReadU32(&pCpu->Ppt.uDesiredHz)
|
---|
3110 | && uHz >= pCpu->Ppt.uMinHz
|
---|
3111 | && !pCpu->Ppt.fStarting /* solaris paranoia */))
|
---|
3112 | {
|
---|
3113 | RTSpinlockAcquire(pCpu->Ppt.hSpinlock);
|
---|
3114 |
|
---|
3115 | pCpu->Ppt.uDesiredHz = uHz;
|
---|
3116 | uint32_t cNsInterval = 0;
|
---|
3117 | if (!pCpu->Ppt.fStarted)
|
---|
3118 | {
|
---|
3119 | pCpu->Ppt.cStarts++;
|
---|
3120 | pCpu->Ppt.fStarted = true;
|
---|
3121 | pCpu->Ppt.fStarting = true;
|
---|
3122 | pCpu->Ppt.iTickHistorization = 0;
|
---|
3123 | pCpu->Ppt.uTimerHz = uHz;
|
---|
3124 | pCpu->Ppt.cNsInterval = cNsInterval = RT_NS_1SEC / uHz;
|
---|
3125 | if (cNsInterval < GVMMHOSTCPU_PPT_HIST_INTERVAL_NS)
|
---|
3126 | pCpu->Ppt.cTicksHistoriziationInterval = ( GVMMHOSTCPU_PPT_HIST_INTERVAL_NS
|
---|
3127 | + GVMMHOSTCPU_PPT_HIST_INTERVAL_NS / 2 - 1)
|
---|
3128 | / cNsInterval;
|
---|
3129 | else
|
---|
3130 | pCpu->Ppt.cTicksHistoriziationInterval = 1;
|
---|
3131 | }
|
---|
3132 |
|
---|
3133 | RTSpinlockRelease(pCpu->Ppt.hSpinlock);
|
---|
3134 |
|
---|
3135 | if (cNsInterval)
|
---|
3136 | {
|
---|
3137 | RTTimerChangeInterval(pCpu->Ppt.pTimer, cNsInterval);
|
---|
3138 | int rc = RTTimerStart(pCpu->Ppt.pTimer, cNsInterval);
|
---|
3139 | AssertRC(rc);
|
---|
3140 |
|
---|
3141 | RTSpinlockAcquire(pCpu->Ppt.hSpinlock);
|
---|
3142 | if (RT_FAILURE(rc))
|
---|
3143 | pCpu->Ppt.fStarted = false;
|
---|
3144 | pCpu->Ppt.fStarting = false;
|
---|
3145 | RTSpinlockRelease(pCpu->Ppt.hSpinlock);
|
---|
3146 | }
|
---|
3147 | }
|
---|
3148 | #else /* !GVMM_SCHED_WITH_PPT */
|
---|
3149 | NOREF(idHostCpu); NOREF(uHz);
|
---|
3150 | #endif /* !GVMM_SCHED_WITH_PPT */
|
---|
3151 | }
|
---|
3152 |
|
---|
3153 |
|
---|
3154 | /**
|
---|
3155 | * Retrieves the GVMM statistics visible to the caller.
|
---|
3156 | *
|
---|
3157 | * @returns VBox status code.
|
---|
3158 | *
|
---|
3159 | * @param pStats Where to put the statistics.
|
---|
3160 | * @param pSession The current session.
|
---|
3161 | * @param pGVM The GVM to obtain statistics for. Optional.
|
---|
3162 | * @param pVM The VM structure corresponding to @a pGVM.
|
---|
3163 | */
|
---|
3164 | GVMMR0DECL(int) GVMMR0QueryStatistics(PGVMMSTATS pStats, PSUPDRVSESSION pSession, PGVM pGVM, PVMCC pVM)
|
---|
3165 | {
|
---|
3166 | LogFlow(("GVMMR0QueryStatistics: pStats=%p pSession=%p pGVM=%p pVM=%p\n", pStats, pSession, pGVM, pVM));
|
---|
3167 |
|
---|
3168 | /*
|
---|
3169 | * Validate input.
|
---|
3170 | */
|
---|
3171 | AssertPtrReturn(pSession, VERR_INVALID_POINTER);
|
---|
3172 | AssertPtrReturn(pStats, VERR_INVALID_POINTER);
|
---|
3173 | pStats->cVMs = 0; /* (crash before taking the sem...) */
|
---|
3174 |
|
---|
3175 | /*
|
---|
3176 | * Take the lock and get the VM statistics.
|
---|
3177 | */
|
---|
3178 | PGVMM pGVMM;
|
---|
3179 | if (pGVM)
|
---|
3180 | {
|
---|
3181 | int rc = gvmmR0ByGVMandVM(pGVM, pVM, &pGVMM, true /*fTakeUsedLock*/);
|
---|
3182 | if (RT_FAILURE(rc))
|
---|
3183 | return rc;
|
---|
3184 | pStats->SchedVM = pGVM->gvmm.s.StatsSched;
|
---|
3185 | }
|
---|
3186 | else
|
---|
3187 | {
|
---|
3188 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
3189 | memset(&pStats->SchedVM, 0, sizeof(pStats->SchedVM));
|
---|
3190 |
|
---|
3191 | int rc = GVMMR0_USED_SHARED_LOCK(pGVMM);
|
---|
3192 | AssertRCReturn(rc, rc);
|
---|
3193 | }
|
---|
3194 |
|
---|
3195 | /*
|
---|
3196 | * Enumerate the VMs and add the ones visible to the statistics.
|
---|
3197 | */
|
---|
3198 | pStats->cVMs = 0;
|
---|
3199 | pStats->cEMTs = 0;
|
---|
3200 | memset(&pStats->SchedSum, 0, sizeof(pStats->SchedSum));
|
---|
3201 |
|
---|
3202 | for (unsigned i = pGVMM->iUsedHead;
|
---|
3203 | i != NIL_GVM_HANDLE && i < RT_ELEMENTS(pGVMM->aHandles);
|
---|
3204 | i = pGVMM->aHandles[i].iNext)
|
---|
3205 | {
|
---|
3206 | PGVM pOtherGVM = pGVMM->aHandles[i].pGVM;
|
---|
3207 | void *pvObj = pGVMM->aHandles[i].pvObj;
|
---|
3208 | if ( VALID_PTR(pvObj)
|
---|
3209 | && VALID_PTR(pOtherGVM)
|
---|
3210 | && pOtherGVM->u32Magic == GVM_MAGIC
|
---|
3211 | && RT_SUCCESS(SUPR0ObjVerifyAccess(pvObj, pSession, NULL)))
|
---|
3212 | {
|
---|
3213 | pStats->cVMs++;
|
---|
3214 | pStats->cEMTs += pOtherGVM->cCpus;
|
---|
3215 |
|
---|
3216 | pStats->SchedSum.cHaltCalls += pOtherGVM->gvmm.s.StatsSched.cHaltCalls;
|
---|
3217 | pStats->SchedSum.cHaltBlocking += pOtherGVM->gvmm.s.StatsSched.cHaltBlocking;
|
---|
3218 | pStats->SchedSum.cHaltTimeouts += pOtherGVM->gvmm.s.StatsSched.cHaltTimeouts;
|
---|
3219 | pStats->SchedSum.cHaltNotBlocking += pOtherGVM->gvmm.s.StatsSched.cHaltNotBlocking;
|
---|
3220 | pStats->SchedSum.cHaltWakeUps += pOtherGVM->gvmm.s.StatsSched.cHaltWakeUps;
|
---|
3221 |
|
---|
3222 | pStats->SchedSum.cWakeUpCalls += pOtherGVM->gvmm.s.StatsSched.cWakeUpCalls;
|
---|
3223 | pStats->SchedSum.cWakeUpNotHalted += pOtherGVM->gvmm.s.StatsSched.cWakeUpNotHalted;
|
---|
3224 | pStats->SchedSum.cWakeUpWakeUps += pOtherGVM->gvmm.s.StatsSched.cWakeUpWakeUps;
|
---|
3225 |
|
---|
3226 | pStats->SchedSum.cPokeCalls += pOtherGVM->gvmm.s.StatsSched.cPokeCalls;
|
---|
3227 | pStats->SchedSum.cPokeNotBusy += pOtherGVM->gvmm.s.StatsSched.cPokeNotBusy;
|
---|
3228 |
|
---|
3229 | pStats->SchedSum.cPollCalls += pOtherGVM->gvmm.s.StatsSched.cPollCalls;
|
---|
3230 | pStats->SchedSum.cPollHalts += pOtherGVM->gvmm.s.StatsSched.cPollHalts;
|
---|
3231 | pStats->SchedSum.cPollWakeUps += pOtherGVM->gvmm.s.StatsSched.cPollWakeUps;
|
---|
3232 | }
|
---|
3233 | }
|
---|
3234 |
|
---|
3235 | /*
|
---|
3236 | * Copy out the per host CPU statistics.
|
---|
3237 | */
|
---|
3238 | uint32_t iDstCpu = 0;
|
---|
3239 | uint32_t cSrcCpus = pGVMM->cHostCpus;
|
---|
3240 | for (uint32_t iSrcCpu = 0; iSrcCpu < cSrcCpus; iSrcCpu++)
|
---|
3241 | {
|
---|
3242 | if (pGVMM->aHostCpus[iSrcCpu].idCpu != NIL_RTCPUID)
|
---|
3243 | {
|
---|
3244 | pStats->aHostCpus[iDstCpu].idCpu = pGVMM->aHostCpus[iSrcCpu].idCpu;
|
---|
3245 | pStats->aHostCpus[iDstCpu].idxCpuSet = pGVMM->aHostCpus[iSrcCpu].idxCpuSet;
|
---|
3246 | #ifdef GVMM_SCHED_WITH_PPT
|
---|
3247 | pStats->aHostCpus[iDstCpu].uDesiredHz = pGVMM->aHostCpus[iSrcCpu].Ppt.uDesiredHz;
|
---|
3248 | pStats->aHostCpus[iDstCpu].uTimerHz = pGVMM->aHostCpus[iSrcCpu].Ppt.uTimerHz;
|
---|
3249 | pStats->aHostCpus[iDstCpu].cChanges = pGVMM->aHostCpus[iSrcCpu].Ppt.cChanges;
|
---|
3250 | pStats->aHostCpus[iDstCpu].cStarts = pGVMM->aHostCpus[iSrcCpu].Ppt.cStarts;
|
---|
3251 | #else
|
---|
3252 | pStats->aHostCpus[iDstCpu].uDesiredHz = 0;
|
---|
3253 | pStats->aHostCpus[iDstCpu].uTimerHz = 0;
|
---|
3254 | pStats->aHostCpus[iDstCpu].cChanges = 0;
|
---|
3255 | pStats->aHostCpus[iDstCpu].cStarts = 0;
|
---|
3256 | #endif
|
---|
3257 | iDstCpu++;
|
---|
3258 | if (iDstCpu >= RT_ELEMENTS(pStats->aHostCpus))
|
---|
3259 | break;
|
---|
3260 | }
|
---|
3261 | }
|
---|
3262 | pStats->cHostCpus = iDstCpu;
|
---|
3263 |
|
---|
3264 | GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
3265 |
|
---|
3266 | return VINF_SUCCESS;
|
---|
3267 | }
|
---|
3268 |
|
---|
3269 |
|
---|
3270 | /**
|
---|
3271 | * VMMR0 request wrapper for GVMMR0QueryStatistics.
|
---|
3272 | *
|
---|
3273 | * @returns see GVMMR0QueryStatistics.
|
---|
3274 | * @param pGVM The global (ring-0) VM structure. Optional.
|
---|
3275 | * @param pVM The cross context VM structure. Optional.
|
---|
3276 | * @param pReq Pointer to the request packet.
|
---|
3277 | * @param pSession The current session.
|
---|
3278 | */
|
---|
3279 | GVMMR0DECL(int) GVMMR0QueryStatisticsReq(PGVM pGVM, PVMCC pVM, PGVMMQUERYSTATISTICSSREQ pReq, PSUPDRVSESSION pSession)
|
---|
3280 | {
|
---|
3281 | /*
|
---|
3282 | * Validate input and pass it on.
|
---|
3283 | */
|
---|
3284 | AssertPtrReturn(pReq, VERR_INVALID_POINTER);
|
---|
3285 | AssertMsgReturn(pReq->Hdr.cbReq == sizeof(*pReq), ("%#x != %#x\n", pReq->Hdr.cbReq, sizeof(*pReq)), VERR_INVALID_PARAMETER);
|
---|
3286 | AssertReturn(pReq->pSession == pSession, VERR_INVALID_PARAMETER);
|
---|
3287 |
|
---|
3288 | return GVMMR0QueryStatistics(&pReq->Stats, pSession, pGVM, pVM);
|
---|
3289 | }
|
---|
3290 |
|
---|
3291 |
|
---|
3292 | /**
|
---|
3293 | * Resets the specified GVMM statistics.
|
---|
3294 | *
|
---|
3295 | * @returns VBox status code.
|
---|
3296 | *
|
---|
3297 | * @param pStats Which statistics to reset, that is, non-zero fields indicates which to reset.
|
---|
3298 | * @param pSession The current session.
|
---|
3299 | * @param pGVM The GVM to reset statistics for. Optional.
|
---|
3300 | * @param pVM The VM structure corresponding to @a pGVM.
|
---|
3301 | */
|
---|
3302 | GVMMR0DECL(int) GVMMR0ResetStatistics(PCGVMMSTATS pStats, PSUPDRVSESSION pSession, PGVM pGVM, PVMCC pVM)
|
---|
3303 | {
|
---|
3304 | LogFlow(("GVMMR0ResetStatistics: pStats=%p pSession=%p pGVM=%p pVM=%p\n", pStats, pSession, pGVM, pVM));
|
---|
3305 |
|
---|
3306 | /*
|
---|
3307 | * Validate input.
|
---|
3308 | */
|
---|
3309 | AssertPtrReturn(pSession, VERR_INVALID_POINTER);
|
---|
3310 | AssertPtrReturn(pStats, VERR_INVALID_POINTER);
|
---|
3311 |
|
---|
3312 | /*
|
---|
3313 | * Take the lock and get the VM statistics.
|
---|
3314 | */
|
---|
3315 | PGVMM pGVMM;
|
---|
3316 | if (pGVM)
|
---|
3317 | {
|
---|
3318 | int rc = gvmmR0ByGVMandVM(pGVM, pVM, &pGVMM, true /*fTakeUsedLock*/);
|
---|
3319 | if (RT_FAILURE(rc))
|
---|
3320 | return rc;
|
---|
3321 | # define MAYBE_RESET_FIELD(field) \
|
---|
3322 | do { if (pStats->SchedVM. field ) { pGVM->gvmm.s.StatsSched. field = 0; } } while (0)
|
---|
3323 | MAYBE_RESET_FIELD(cHaltCalls);
|
---|
3324 | MAYBE_RESET_FIELD(cHaltBlocking);
|
---|
3325 | MAYBE_RESET_FIELD(cHaltTimeouts);
|
---|
3326 | MAYBE_RESET_FIELD(cHaltNotBlocking);
|
---|
3327 | MAYBE_RESET_FIELD(cHaltWakeUps);
|
---|
3328 | MAYBE_RESET_FIELD(cWakeUpCalls);
|
---|
3329 | MAYBE_RESET_FIELD(cWakeUpNotHalted);
|
---|
3330 | MAYBE_RESET_FIELD(cWakeUpWakeUps);
|
---|
3331 | MAYBE_RESET_FIELD(cPokeCalls);
|
---|
3332 | MAYBE_RESET_FIELD(cPokeNotBusy);
|
---|
3333 | MAYBE_RESET_FIELD(cPollCalls);
|
---|
3334 | MAYBE_RESET_FIELD(cPollHalts);
|
---|
3335 | MAYBE_RESET_FIELD(cPollWakeUps);
|
---|
3336 | # undef MAYBE_RESET_FIELD
|
---|
3337 | }
|
---|
3338 | else
|
---|
3339 | {
|
---|
3340 | GVMM_GET_VALID_INSTANCE(pGVMM, VERR_GVMM_INSTANCE);
|
---|
3341 |
|
---|
3342 | int rc = GVMMR0_USED_SHARED_LOCK(pGVMM);
|
---|
3343 | AssertRCReturn(rc, rc);
|
---|
3344 | }
|
---|
3345 |
|
---|
3346 | /*
|
---|
3347 | * Enumerate the VMs and add the ones visible to the statistics.
|
---|
3348 | */
|
---|
3349 | if (!ASMMemIsZero(&pStats->SchedSum, sizeof(pStats->SchedSum)))
|
---|
3350 | {
|
---|
3351 | for (unsigned i = pGVMM->iUsedHead;
|
---|
3352 | i != NIL_GVM_HANDLE && i < RT_ELEMENTS(pGVMM->aHandles);
|
---|
3353 | i = pGVMM->aHandles[i].iNext)
|
---|
3354 | {
|
---|
3355 | PGVM pOtherGVM = pGVMM->aHandles[i].pGVM;
|
---|
3356 | void *pvObj = pGVMM->aHandles[i].pvObj;
|
---|
3357 | if ( VALID_PTR(pvObj)
|
---|
3358 | && VALID_PTR(pOtherGVM)
|
---|
3359 | && pOtherGVM->u32Magic == GVM_MAGIC
|
---|
3360 | && RT_SUCCESS(SUPR0ObjVerifyAccess(pvObj, pSession, NULL)))
|
---|
3361 | {
|
---|
3362 | # define MAYBE_RESET_FIELD(field) \
|
---|
3363 | do { if (pStats->SchedSum. field ) { pOtherGVM->gvmm.s.StatsSched. field = 0; } } while (0)
|
---|
3364 | MAYBE_RESET_FIELD(cHaltCalls);
|
---|
3365 | MAYBE_RESET_FIELD(cHaltBlocking);
|
---|
3366 | MAYBE_RESET_FIELD(cHaltTimeouts);
|
---|
3367 | MAYBE_RESET_FIELD(cHaltNotBlocking);
|
---|
3368 | MAYBE_RESET_FIELD(cHaltWakeUps);
|
---|
3369 | MAYBE_RESET_FIELD(cWakeUpCalls);
|
---|
3370 | MAYBE_RESET_FIELD(cWakeUpNotHalted);
|
---|
3371 | MAYBE_RESET_FIELD(cWakeUpWakeUps);
|
---|
3372 | MAYBE_RESET_FIELD(cPokeCalls);
|
---|
3373 | MAYBE_RESET_FIELD(cPokeNotBusy);
|
---|
3374 | MAYBE_RESET_FIELD(cPollCalls);
|
---|
3375 | MAYBE_RESET_FIELD(cPollHalts);
|
---|
3376 | MAYBE_RESET_FIELD(cPollWakeUps);
|
---|
3377 | # undef MAYBE_RESET_FIELD
|
---|
3378 | }
|
---|
3379 | }
|
---|
3380 | }
|
---|
3381 |
|
---|
3382 | GVMMR0_USED_SHARED_UNLOCK(pGVMM);
|
---|
3383 |
|
---|
3384 | return VINF_SUCCESS;
|
---|
3385 | }
|
---|
3386 |
|
---|
3387 |
|
---|
3388 | /**
|
---|
3389 | * VMMR0 request wrapper for GVMMR0ResetStatistics.
|
---|
3390 | *
|
---|
3391 | * @returns see GVMMR0ResetStatistics.
|
---|
3392 | * @param pGVM The global (ring-0) VM structure. Optional.
|
---|
3393 | * @param pVM The cross context VM structure. Optional.
|
---|
3394 | * @param pReq Pointer to the request packet.
|
---|
3395 | * @param pSession The current session.
|
---|
3396 | */
|
---|
3397 | GVMMR0DECL(int) GVMMR0ResetStatisticsReq(PGVM pGVM, PVMCC pVM, PGVMMRESETSTATISTICSSREQ pReq, PSUPDRVSESSION pSession)
|
---|
3398 | {
|
---|
3399 | /*
|
---|
3400 | * Validate input and pass it on.
|
---|
3401 | */
|
---|
3402 | AssertPtrReturn(pReq, VERR_INVALID_POINTER);
|
---|
3403 | AssertMsgReturn(pReq->Hdr.cbReq == sizeof(*pReq), ("%#x != %#x\n", pReq->Hdr.cbReq, sizeof(*pReq)), VERR_INVALID_PARAMETER);
|
---|
3404 | AssertReturn(pReq->pSession == pSession, VERR_INVALID_PARAMETER);
|
---|
3405 |
|
---|
3406 | return GVMMR0ResetStatistics(&pReq->Stats, pSession, pGVM, pVM);
|
---|
3407 | }
|
---|
3408 |
|
---|