1 | /* $Id: MM.cpp 18718 2009-04-05 13:47:09Z vboxsync $ */
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2 | /** @file
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3 | * MM - Memory Manager.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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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 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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18 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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19 | * additional information or have any questions.
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20 | */
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21 |
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22 |
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23 | /** @page pg_mm MM - The Memory Manager
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24 | *
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25 | * The memory manager is in charge of the following memory:
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26 | * - Hypervisor Memory Area (HMA) - Address space management.
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27 | * - Hypervisor Heap - A memory heap that lives in all contexts.
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28 | * - Tagged ring-3 heap.
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29 | * - Page pools - Primarily used by PGM for shadow page tables.
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30 | * - Locked process memory - Guest RAM and other. (reduce/obsolete this)
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31 | * - Physical guest memory (RAM & ROM) - Moving to PGM. (obsolete this)
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32 | *
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33 | * The global memory manager (GMM) is the global counter part / partner of MM.
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34 | * MM will provide therefore ring-3 callable interfaces for some of the GMM APIs
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35 | * related to resource tracking (PGM is the user).
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36 | *
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37 | * @see grp_mm
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38 | *
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39 | *
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40 | * @section sec_mm_hma Hypervisor Memory Area
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41 | *
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42 | * The HMA is used when executing in raw-mode. We borrow, with the help of
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43 | * PGMMap, some unused space (one or more page directory entries to be precise)
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44 | * in the guest's virtual memory context. PGM will monitor the guest's virtual
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45 | * address space for changes and relocate the HMA when required.
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46 | *
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47 | * To give some idea what's in the HMA, study the 'info hma' output:
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48 | * @verbatim
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49 | VBoxDbg> info hma
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50 | Hypervisor Memory Area (HMA) Layout: Base 00000000a0000000, 0x00800000 bytes
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51 | 00000000a05cc000-00000000a05cd000 DYNAMIC fence
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52 | 00000000a05c4000-00000000a05cc000 DYNAMIC Dynamic mapping
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53 | 00000000a05c3000-00000000a05c4000 DYNAMIC fence
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54 | 00000000a05b8000-00000000a05c3000 DYNAMIC Paging
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55 | 00000000a05b6000-00000000a05b8000 MMIO2 0000000000000000 PCNetShMem
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56 | 00000000a0536000-00000000a05b6000 MMIO2 0000000000000000 VGA VRam
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57 | 00000000a0523000-00000000a0536000 00002aaab3d0c000 LOCKED autofree alloc once (PDM_DEVICE)
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58 | 00000000a0522000-00000000a0523000 DYNAMIC fence
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59 | 00000000a051e000-00000000a0522000 00002aaab36f5000 LOCKED autofree VBoxDD2GC.gc
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60 | 00000000a051d000-00000000a051e000 DYNAMIC fence
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61 | 00000000a04eb000-00000000a051d000 00002aaab36c3000 LOCKED autofree VBoxDDGC.gc
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62 | 00000000a04ea000-00000000a04eb000 DYNAMIC fence
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63 | 00000000a04e9000-00000000a04ea000 00002aaab36c2000 LOCKED autofree ram range (High ROM Region)
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64 | 00000000a04e8000-00000000a04e9000 DYNAMIC fence
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65 | 00000000a040e000-00000000a04e8000 00002aaab2e6d000 LOCKED autofree VMMGC.gc
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66 | 00000000a0208000-00000000a040e000 00002aaab2c67000 LOCKED autofree alloc once (PATM)
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67 | 00000000a01f7000-00000000a0208000 00002aaaab92d000 LOCKED autofree alloc once (SELM)
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68 | 00000000a01e7000-00000000a01f7000 00002aaaab5e8000 LOCKED autofree alloc once (SELM)
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69 | 00000000a01e6000-00000000a01e7000 DYNAMIC fence
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70 | 00000000a01e5000-00000000a01e6000 00002aaaab5e7000 HCPHYS 00000000c363c000 Core Code
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71 | 00000000a01e4000-00000000a01e5000 DYNAMIC fence
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72 | 00000000a01e3000-00000000a01e4000 00002aaaaab26000 HCPHYS 00000000619cf000 GIP
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73 | 00000000a01a2000-00000000a01e3000 00002aaaabf32000 LOCKED autofree alloc once (PGM_PHYS)
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74 | 00000000a016b000-00000000a01a2000 00002aaab233f000 LOCKED autofree alloc once (PGM_POOL)
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75 | 00000000a016a000-00000000a016b000 DYNAMIC fence
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76 | 00000000a0165000-00000000a016a000 DYNAMIC CR3 mapping
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77 | 00000000a0164000-00000000a0165000 DYNAMIC fence
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78 | 00000000a0024000-00000000a0164000 00002aaab215f000 LOCKED autofree Heap
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79 | 00000000a0023000-00000000a0024000 DYNAMIC fence
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80 | 00000000a0001000-00000000a0023000 00002aaab1d24000 LOCKED pages VM
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81 | 00000000a0000000-00000000a0001000 DYNAMIC fence
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82 | @endverbatim
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83 | *
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84 | *
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85 | * @section sec_mm_hyperheap Hypervisor Heap
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86 | *
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87 | * The heap is accessible from ring-3, ring-0 and the raw-mode context. That
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88 | * said, it's not necessarily mapped into ring-0 on if that's possible since we
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89 | * don't wish to waste kernel address space without a good reason.
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90 | *
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91 | * Allocations within the heap are always in the same relative position in all
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92 | * contexts, so, it's possible to use offset based linking. In fact, the heap is
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93 | * internally using offset based linked lists tracking heap blocks. We use
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94 | * offset linked AVL trees and lists in a lot of places where share structures
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95 | * between RC, R3 and R0, so this is a strict requirement of the heap. However
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96 | * this means that we cannot easily extend the heap since the extension won't
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97 | * necessarily be in the continuation of the current heap memory in all (or any)
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98 | * context.
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99 | *
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100 | * All allocations are tagged. Per tag allocation statistics will be maintaing
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101 | * and exposed thru STAM when VBOX_WITH_STATISTICS is defined.
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102 | *
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103 | *
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104 | * @section sec_mm_r3heap Tagged Ring-3 Heap
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105 | *
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106 | * The ring-3 heap is a wrapper around the RTMem API adding allocation
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107 | * statistics and automatic cleanup on VM destruction.
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108 | *
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109 | * Per tag allocation statistics will be maintaing and exposed thru STAM when
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110 | * VBOX_WITH_STATISTICS is defined.
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111 | *
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112 | *
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113 | * @section sec_mm_page Page Pool
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114 | *
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115 | * The MM manages a page pool from which other components can allocate locked,
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116 | * page aligned and page sized memory objects. The pool provides facilities to
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117 | * convert back and forth between (host) physical and virtual addresses (within
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118 | * the pool of course). Several specialized interfaces are provided for the most
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119 | * common alloctions and convertions to save the caller from bothersome casting
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120 | * and extra parameter passing.
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121 | *
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122 | *
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123 | * @section sec_mm_locked Locked Process Memory
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124 | *
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125 | * MM manages the locked process memory. This is used for a bunch of things
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126 | * (count the LOCKED entries in the'info hma' output found in @ref sec_mm_hma),
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127 | * but the main consumer of memory is currently for guest RAM. There is an
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128 | * ongoing rewrite that will move all the guest RAM allocation to PGM and
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129 | * GMM.
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130 | *
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131 | * The locking of memory is something doing in cooperation with the VirtualBox
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132 | * support driver, SUPDrv (aka. VBoxDrv), thru the support library API,
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133 | * SUPR3 (aka. SUPLib).
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134 | *
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135 | *
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136 | * @section sec_mm_phys Physical Guest Memory
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137 | *
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138 | * MM is currently managing the physical memory for the guest. It relies heavily
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139 | * on PGM for this. There is an ongoing rewrite that will move this to PGM. (The
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140 | * rewrite is driven by the need for more flexible guest ram allocation, but
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141 | * also motivated by the fact that MMPhys is just adding stupid bureaucracy and
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142 | * that MMR3PhysReserve is a totally weird artifact that must go away.)
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143 | *
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144 | */
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145 |
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146 |
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147 | /*******************************************************************************
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148 | * Header Files *
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149 | *******************************************************************************/
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150 | #define LOG_GROUP LOG_GROUP_MM
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151 | #include <VBox/mm.h>
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152 | #include <VBox/pgm.h>
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153 | #include <VBox/cfgm.h>
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154 | #include <VBox/ssm.h>
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155 | #include <VBox/gmm.h>
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156 | #include "MMInternal.h"
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157 | #include <VBox/vm.h>
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158 | #include <VBox/uvm.h>
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159 | #include <VBox/err.h>
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160 | #include <VBox/param.h>
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161 |
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162 | #include <VBox/log.h>
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163 | #include <iprt/alloc.h>
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164 | #include <iprt/assert.h>
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165 | #include <iprt/string.h>
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166 |
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167 |
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168 | /*******************************************************************************
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169 | * Defined Constants And Macros *
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170 | *******************************************************************************/
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171 | /** The current saved state versino of MM. */
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172 | #define MM_SAVED_STATE_VERSION 2
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173 |
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174 |
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175 | /*******************************************************************************
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176 | * Internal Functions *
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177 | *******************************************************************************/
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178 | static DECLCALLBACK(int) mmR3Save(PVM pVM, PSSMHANDLE pSSM);
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179 | static DECLCALLBACK(int) mmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version);
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180 |
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181 |
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182 |
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183 |
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184 | /**
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185 | * Initializes the MM members of the UVM.
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186 | *
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187 | * This is currently only the ring-3 heap.
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188 | *
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189 | * @returns VBox status code.
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190 | * @param pUVM Pointer to the user mode VM structure.
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191 | */
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192 | VMMR3DECL(int) MMR3InitUVM(PUVM pUVM)
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193 | {
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194 | /*
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195 | * Assert sizes and order.
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196 | */
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197 | AssertCompile(sizeof(pUVM->mm.s) <= sizeof(pUVM->mm.padding));
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198 | AssertRelease(sizeof(pUVM->mm.s) <= sizeof(pUVM->mm.padding));
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199 | Assert(!pUVM->mm.s.pHeap);
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200 |
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201 | /*
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202 | * Init the heap.
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203 | */
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204 | return mmR3HeapCreateU(pUVM, &pUVM->mm.s.pHeap);
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205 | }
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206 |
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207 |
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208 | /**
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209 | * Initializes the MM.
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210 | *
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211 | * MM is managing the virtual address space (among other things) and
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212 | * setup the hypvervisor memory area mapping in the VM structure and
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213 | * the hypvervisor alloc-only-heap. Assuming the current init order
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214 | * and components the hypvervisor memory area looks like this:
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215 | * -# VM Structure.
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216 | * -# Hypervisor alloc only heap (also call Hypervisor memory region).
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217 | * -# Core code.
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218 | *
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219 | * MM determins the virtual address of the hypvervisor memory area by
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220 | * checking for location at previous run. If that property isn't available
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221 | * it will choose a default starting location, currently 0xa0000000.
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222 | *
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223 | * @returns VBox status code.
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224 | * @param pVM The VM to operate on.
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225 | */
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226 | VMMR3DECL(int) MMR3Init(PVM pVM)
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227 | {
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228 | LogFlow(("MMR3Init\n"));
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229 |
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230 | /*
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231 | * Assert alignment, sizes and order.
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232 | */
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233 | AssertRelease(!(RT_OFFSETOF(VM, mm.s) & 31));
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234 | AssertRelease(sizeof(pVM->mm.s) <= sizeof(pVM->mm.padding));
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235 | AssertMsg(pVM->mm.s.offVM == 0, ("Already initialized!\n"));
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236 |
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237 | /*
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238 | * Init the structure.
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239 | */
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240 | pVM->mm.s.offVM = RT_OFFSETOF(VM, mm);
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241 | pVM->mm.s.offLookupHyper = NIL_OFFSET;
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242 |
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243 | /*
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244 | * Init the page pool.
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245 | */
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246 | int rc = mmR3PagePoolInit(pVM);
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247 | if (RT_SUCCESS(rc))
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248 | {
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249 | /*
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250 | * Init the hypervisor related stuff.
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251 | */
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252 | rc = mmR3HyperInit(pVM);
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253 | if (RT_SUCCESS(rc))
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254 | {
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255 | /*
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256 | * Register the saved state data unit.
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257 | */
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258 | rc = SSMR3RegisterInternal(pVM, "mm", 1, MM_SAVED_STATE_VERSION, sizeof(uint32_t) * 2,
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259 | NULL, mmR3Save, NULL,
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260 | NULL, mmR3Load, NULL);
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261 | if (RT_SUCCESS(rc))
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262 | return rc;
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263 |
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264 | /* .... failure .... */
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265 | }
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266 | }
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267 | MMR3Term(pVM);
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268 | return rc;
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269 | }
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270 |
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271 |
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272 | /**
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273 | * Initializes the MM parts which depends on PGM being initialized.
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274 | *
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275 | * @returns VBox status code.
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276 | * @param pVM The VM to operate on.
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277 | * @remark No cleanup necessary since MMR3Term() will be called on failure.
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278 | */
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279 | VMMR3DECL(int) MMR3InitPaging(PVM pVM)
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280 | {
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281 | LogFlow(("MMR3InitPaging:\n"));
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282 |
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283 | /*
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284 | * Query the CFGM values.
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285 | */
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286 | int rc;
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287 | PCFGMNODE pMMCfg = CFGMR3GetChild(CFGMR3GetRoot(pVM), "MM");
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288 | if (!pMMCfg)
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289 | {
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290 | rc = CFGMR3InsertNode(CFGMR3GetRoot(pVM), "MM", &pMMCfg);
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291 | AssertRCReturn(rc, rc);
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292 | }
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293 |
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294 | /** @cfgm{RamPreAlloc, boolean, false}
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295 | * Indicates whether the base RAM should all be allocated before starting
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296 | * the VM (default), or if it should be allocated when first written to.
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297 | */
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298 | bool fPreAlloc;
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299 | rc = CFGMR3QueryBool(CFGMR3GetRoot(pVM), "RamPreAlloc", &fPreAlloc);
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300 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
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301 | fPreAlloc = false;
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302 | else
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303 | AssertMsgRCReturn(rc, ("Configuration error: Failed to query integer \"RamPreAlloc\", rc=%Rrc.\n", rc), rc);
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304 |
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305 | /** @cfgm{RamSize, uint64_t, 0, 16TB, 0}
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306 | * Specifies the size of the base RAM that is to be set up during
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307 | * VM initialization.
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308 | */
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309 | uint64_t cbRam;
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310 | rc = CFGMR3QueryU64(CFGMR3GetRoot(pVM), "RamSize", &cbRam);
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311 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
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312 | cbRam = 0;
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313 | else
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314 | AssertMsgRCReturn(rc, ("Configuration error: Failed to query integer \"RamSize\", rc=%Rrc.\n", rc), rc);
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315 | AssertLogRelMsg(!(cbRam & ~X86_PTE_PAE_PG_MASK), ("%RGp X86_PTE_PAE_PG_MASK=%RX64\n", cbRam, X86_PTE_PAE_PG_MASK));
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316 | AssertLogRelMsgReturn(cbRam <= GMM_GCPHYS_LAST, ("cbRam=%RGp GMM_GCPHYS_LAST=%RX64\n", cbRam, GMM_GCPHYS_LAST), VERR_OUT_OF_RANGE);
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317 | cbRam &= X86_PTE_PAE_PG_MASK;
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318 | pVM->mm.s.cbRamBase = cbRam;
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319 |
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320 | /** @cfgm{RamHoleSize, uint32_t, 0, 4032MB, 512MB}
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321 | * Specifies the size of the memory hole. The memory hole is used
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322 | * to avoid mapping RAM to the range normally used for PCI memory regions.
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323 | * Must be aligned on a 4MB boundrary. */
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324 | uint32_t cbRamHole;
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325 | rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
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326 | AssertLogRelMsgRCReturn(rc, ("Configuration error: Failed to query integer \"RamHoleSize\", rc=%Rrc.\n", rc), rc);
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327 | AssertLogRelMsgReturn(cbRamHole <= 4032U * _1M,
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328 | ("Configuration error: \"RamHoleSize\"=%#RX32 is too large.\n", cbRamHole), VERR_OUT_OF_RANGE);
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329 | AssertLogRelMsgReturn(cbRamHole > 16 * _1M,
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330 | ("Configuration error: \"RamHoleSize\"=%#RX32 is too large.\n", cbRamHole), VERR_OUT_OF_RANGE);
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331 | AssertLogRelMsgReturn(!(cbRamHole & (_4M - 1)),
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332 | ("Configuration error: \"RamHoleSize\"=%#RX32 is misaligned.\n", cbRamHole), VERR_OUT_OF_RANGE);
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333 | uint64_t const offRamHole = _4G - cbRamHole;
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334 | if (cbRam < offRamHole)
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335 | Log(("MM: %RU64 bytes of RAM%s\n", cbRam, fPreAlloc ? " (PreAlloc)" : ""));
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336 | else
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337 | Log(("MM: %RU64 bytes of RAM%s with a hole at %RU64 up to 4GB.\n", cbRam, fPreAlloc ? " (PreAlloc)" : "", offRamHole));
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338 |
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339 | /** @cfgm{MM/Policy, string, no overcommitment}
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340 | * Specifies the policy to use when reserving memory for this VM. The recognized
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341 | * value is 'no overcommitment' (default). See GMMPOLICY.
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342 | */
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343 | GMMOCPOLICY enmOcPolicy;
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344 | char sz[64];
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345 | rc = CFGMR3QueryString(CFGMR3GetRoot(pVM), "Policy", sz, sizeof(sz));
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346 | if (RT_SUCCESS(rc))
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347 | {
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348 | if ( !RTStrICmp(sz, "no_oc")
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349 | || !RTStrICmp(sz, "no overcommitment"))
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350 | enmOcPolicy = GMMOCPOLICY_NO_OC;
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351 | else
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352 | return VMSetError(pVM, VERR_INVALID_PARAMETER, RT_SRC_POS, "Unknown \"MM/Policy\" value \"%s\"", sz);
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353 | }
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354 | else if (rc == VERR_CFGM_VALUE_NOT_FOUND)
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355 | enmOcPolicy = GMMOCPOLICY_NO_OC;
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356 | else
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357 | AssertMsgRCReturn(rc, ("Configuration error: Failed to query string \"MM/Policy\", rc=%Rrc.\n", rc), rc);
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358 |
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359 | /** @cfgm{MM/Priority, string, normal}
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360 | * Specifies the memory priority of this VM. The priority comes into play when the
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361 | * system is overcommitted and the VMs needs to be milked for memory. The recognized
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362 | * values are 'low', 'normal' (default) and 'high'. See GMMPRIORITY.
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363 | */
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364 | GMMPRIORITY enmPriority;
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365 | rc = CFGMR3QueryString(CFGMR3GetRoot(pVM), "Priority", sz, sizeof(sz));
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366 | if (RT_SUCCESS(rc))
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367 | {
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368 | if (!RTStrICmp(sz, "low"))
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369 | enmPriority = GMMPRIORITY_LOW;
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370 | else if (!RTStrICmp(sz, "normal"))
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371 | enmPriority = GMMPRIORITY_NORMAL;
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372 | else if (!RTStrICmp(sz, "high"))
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373 | enmPriority = GMMPRIORITY_HIGH;
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374 | else
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375 | return VMSetError(pVM, VERR_INVALID_PARAMETER, RT_SRC_POS, "Unknown \"MM/Priority\" value \"%s\"", sz);
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376 | }
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377 | else if (rc == VERR_CFGM_VALUE_NOT_FOUND)
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378 | enmPriority = GMMPRIORITY_NORMAL;
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379 | else
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380 | AssertMsgRCReturn(rc, ("Configuration error: Failed to query string \"MM/Priority\", rc=%Rrc.\n", rc), rc);
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381 |
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382 | /*
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383 | * Make the initial memory reservation with GMM.
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384 | */
|
---|
385 | uint64_t cBasePages = (cbRam >> PAGE_SHIFT) + pVM->mm.s.cBasePages;
|
---|
386 | rc = GMMR3InitialReservation(pVM,
|
---|
387 | RT_MAX(cBasePages + pVM->mm.s.cHandyPages, 1),
|
---|
388 | RT_MAX(pVM->mm.s.cShadowPages, 1),
|
---|
389 | RT_MAX(pVM->mm.s.cFixedPages, 1),
|
---|
390 | enmOcPolicy,
|
---|
391 | enmPriority);
|
---|
392 | if (RT_FAILURE(rc))
|
---|
393 | {
|
---|
394 | if (rc == VERR_GMM_MEMORY_RESERVATION_DECLINED)
|
---|
395 | return VMSetError(pVM, rc, RT_SRC_POS,
|
---|
396 | N_("Insufficient free memory to start the VM (cbRam=%#RX64 enmOcPolicy=%d enmPriority=%d)"),
|
---|
397 | cbRam, enmOcPolicy, enmPriority);
|
---|
398 | return VMSetError(pVM, rc, RT_SRC_POS, "GMMR3InitialReservation(,%#RX64,0,0,%d,%d)",
|
---|
399 | cbRam >> PAGE_SHIFT, enmOcPolicy, enmPriority);
|
---|
400 | }
|
---|
401 |
|
---|
402 | /*
|
---|
403 | * If RamSize is 0 we're done now.
|
---|
404 | */
|
---|
405 | if (cbRam < PAGE_SIZE)
|
---|
406 | {
|
---|
407 | Log(("MM: No RAM configured\n"));
|
---|
408 | return VINF_SUCCESS;
|
---|
409 | }
|
---|
410 |
|
---|
411 | /*
|
---|
412 | * Setup the base ram (PGM).
|
---|
413 | */
|
---|
414 | if (cbRam > offRamHole)
|
---|
415 | {
|
---|
416 | rc = PGMR3PhysRegisterRam(pVM, 0, offRamHole, "Base RAM");
|
---|
417 | if (RT_SUCCESS(rc))
|
---|
418 | rc = PGMR3PhysRegisterRam(pVM, _4G, cbRam - offRamHole, "Above 4GB Base RAM");
|
---|
419 | }
|
---|
420 | else
|
---|
421 | rc = PGMR3PhysRegisterRam(pVM, 0, RT_MIN(cbRam, offRamHole), "Base RAM");
|
---|
422 | if ( RT_SUCCESS(rc)
|
---|
423 | && fPreAlloc)
|
---|
424 | {
|
---|
425 | /** @todo RamPreAlloc should be handled at the very end of the VM creation. (lazy bird) */
|
---|
426 | return VM_SET_ERROR(pVM, VERR_NOT_IMPLEMENTED, "TODO: RamPreAlloc");
|
---|
427 | }
|
---|
428 |
|
---|
429 | /*
|
---|
430 | * Enabled mmR3UpdateReservation here since we don't want the
|
---|
431 | * PGMR3PhysRegisterRam calls above mess things up.
|
---|
432 | */
|
---|
433 | pVM->mm.s.fDoneMMR3InitPaging = true;
|
---|
434 | AssertMsg(pVM->mm.s.cBasePages == cBasePages || RT_FAILURE(rc), ("%RX64 != %RX64\n", pVM->mm.s.cBasePages, cBasePages));
|
---|
435 |
|
---|
436 | LogFlow(("MMR3InitPaging: returns %Rrc\n", rc));
|
---|
437 | return rc;
|
---|
438 | }
|
---|
439 |
|
---|
440 |
|
---|
441 | /**
|
---|
442 | * Terminates the MM.
|
---|
443 | *
|
---|
444 | * Termination means cleaning up and freeing all resources,
|
---|
445 | * the VM it self is at this point powered off or suspended.
|
---|
446 | *
|
---|
447 | * @returns VBox status code.
|
---|
448 | * @param pVM The VM to operate on.
|
---|
449 | */
|
---|
450 | VMMR3DECL(int) MMR3Term(PVM pVM)
|
---|
451 | {
|
---|
452 | /*
|
---|
453 | * Destroy the page pool. (first as it used the hyper heap)
|
---|
454 | */
|
---|
455 | mmR3PagePoolTerm(pVM);
|
---|
456 |
|
---|
457 | /*
|
---|
458 | * Zero stuff to detect after termination use of the MM interface
|
---|
459 | */
|
---|
460 | pVM->mm.s.offLookupHyper = NIL_OFFSET;
|
---|
461 | pVM->mm.s.pHyperHeapR3 = NULL; /* freed above. */
|
---|
462 | pVM->mm.s.pHyperHeapR0 = NIL_RTR0PTR; /* freed above. */
|
---|
463 | pVM->mm.s.pHyperHeapRC = NIL_RTRCPTR; /* freed above. */
|
---|
464 | pVM->mm.s.offVM = 0; /* init assertion on this */
|
---|
465 |
|
---|
466 | return VINF_SUCCESS;
|
---|
467 | }
|
---|
468 |
|
---|
469 |
|
---|
470 | /**
|
---|
471 | * Terminates the UVM part of MM.
|
---|
472 | *
|
---|
473 | * Termination means cleaning up and freeing all resources,
|
---|
474 | * the VM it self is at this point powered off or suspended.
|
---|
475 | *
|
---|
476 | * @returns VBox status code.
|
---|
477 | * @param pUVM Pointer to the user mode VM structure.
|
---|
478 | */
|
---|
479 | VMMR3DECL(void) MMR3TermUVM(PUVM pUVM)
|
---|
480 | {
|
---|
481 | /*
|
---|
482 | * Destroy the heap.
|
---|
483 | */
|
---|
484 | mmR3HeapDestroy(pUVM->mm.s.pHeap);
|
---|
485 | pUVM->mm.s.pHeap = NULL;
|
---|
486 | }
|
---|
487 |
|
---|
488 |
|
---|
489 | /**
|
---|
490 | * Reset notification.
|
---|
491 | *
|
---|
492 | * @param pVM The VM handle.
|
---|
493 | */
|
---|
494 | VMMR3DECL(void) MMR3Reset(PVM pVM)
|
---|
495 | {
|
---|
496 | /* nothing to do anylonger. */
|
---|
497 | }
|
---|
498 |
|
---|
499 |
|
---|
500 | /**
|
---|
501 | * Execute state save operation.
|
---|
502 | *
|
---|
503 | * @returns VBox status code.
|
---|
504 | * @param pVM VM Handle.
|
---|
505 | * @param pSSM SSM operation handle.
|
---|
506 | */
|
---|
507 | static DECLCALLBACK(int) mmR3Save(PVM pVM, PSSMHANDLE pSSM)
|
---|
508 | {
|
---|
509 | LogFlow(("mmR3Save:\n"));
|
---|
510 |
|
---|
511 | /* (PGM saves the physical memory.) */
|
---|
512 | SSMR3PutU64(pSSM, pVM->mm.s.cBasePages);
|
---|
513 | return SSMR3PutU64(pSSM, pVM->mm.s.cbRamBase);
|
---|
514 | }
|
---|
515 |
|
---|
516 |
|
---|
517 | /**
|
---|
518 | * Execute state load operation.
|
---|
519 | *
|
---|
520 | * @returns VBox status code.
|
---|
521 | * @param pVM VM Handle.
|
---|
522 | * @param pSSM SSM operation handle.
|
---|
523 | * @param u32Version Data layout version.
|
---|
524 | */
|
---|
525 | static DECLCALLBACK(int) mmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t u32Version)
|
---|
526 | {
|
---|
527 | LogFlow(("mmR3Load:\n"));
|
---|
528 |
|
---|
529 | /*
|
---|
530 | * Validate version.
|
---|
531 | */
|
---|
532 | if ( SSM_VERSION_MAJOR_CHANGED(u32Version, MM_SAVED_STATE_VERSION)
|
---|
533 | || !u32Version)
|
---|
534 | {
|
---|
535 | AssertMsgFailed(("mmR3Load: Invalid version u32Version=%d!\n", u32Version));
|
---|
536 | return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
|
---|
537 | }
|
---|
538 |
|
---|
539 | /*
|
---|
540 | * Check the cBasePages and cbRamBase values.
|
---|
541 | */
|
---|
542 | int rc;
|
---|
543 | RTUINT cb1;
|
---|
544 |
|
---|
545 | /* cBasePages (ignored) */
|
---|
546 | uint64_t cPages;
|
---|
547 | if (u32Version >= 2)
|
---|
548 | rc = SSMR3GetU64(pSSM, &cPages);
|
---|
549 | else
|
---|
550 | {
|
---|
551 | rc = SSMR3GetUInt(pSSM, &cb1);
|
---|
552 | cPages = cb1 >> PAGE_SHIFT;
|
---|
553 | }
|
---|
554 | if (RT_FAILURE(rc))
|
---|
555 | return rc;
|
---|
556 |
|
---|
557 | /* cbRamBase */
|
---|
558 | uint64_t cb;
|
---|
559 | if (u32Version != 1)
|
---|
560 | rc = SSMR3GetU64(pSSM, &cb);
|
---|
561 | else
|
---|
562 | {
|
---|
563 | rc = SSMR3GetUInt(pSSM, &cb1);
|
---|
564 | cb = cb1;
|
---|
565 | }
|
---|
566 | if (RT_FAILURE(rc))
|
---|
567 | return rc;
|
---|
568 | AssertLogRelMsgReturn(cb == pVM->mm.s.cbRamBase,
|
---|
569 | ("Memory configuration has changed. cbRamBase=%#RX64 save=%#RX64\n", pVM->mm.s.cbRamBase, cb),
|
---|
570 | VERR_SSM_LOAD_MEMORY_SIZE_MISMATCH);
|
---|
571 |
|
---|
572 | /* (PGM restores the physical memory.) */
|
---|
573 | return rc;
|
---|
574 | }
|
---|
575 |
|
---|
576 |
|
---|
577 | /**
|
---|
578 | * Updates GMM with memory reservation changes.
|
---|
579 | *
|
---|
580 | * Called when MM::cbRamRegistered, MM::cShadowPages or MM::cFixedPages changes.
|
---|
581 | *
|
---|
582 | * @returns VBox status code - see GMMR0UpdateReservation.
|
---|
583 | * @param pVM The shared VM structure.
|
---|
584 | */
|
---|
585 | int mmR3UpdateReservation(PVM pVM)
|
---|
586 | {
|
---|
587 | VM_ASSERT_EMT(pVM);
|
---|
588 | if (pVM->mm.s.fDoneMMR3InitPaging)
|
---|
589 | return GMMR3UpdateReservation(pVM,
|
---|
590 | RT_MAX(pVM->mm.s.cBasePages + pVM->mm.s.cHandyPages, 1),
|
---|
591 | RT_MAX(pVM->mm.s.cShadowPages, 1),
|
---|
592 | RT_MAX(pVM->mm.s.cFixedPages, 1));
|
---|
593 | return VINF_SUCCESS;
|
---|
594 | }
|
---|
595 |
|
---|
596 |
|
---|
597 | /**
|
---|
598 | * Interface for PGM to increase the reservation of RAM and ROM pages.
|
---|
599 | *
|
---|
600 | * This can be called before MMR3InitPaging.
|
---|
601 | *
|
---|
602 | * @returns VBox status code. Will set VM error on failure.
|
---|
603 | * @param pVM The shared VM structure.
|
---|
604 | * @param cAddBasePages The number of pages to add.
|
---|
605 | */
|
---|
606 | VMMR3DECL(int) MMR3IncreaseBaseReservation(PVM pVM, uint64_t cAddBasePages)
|
---|
607 | {
|
---|
608 | uint64_t cOld = pVM->mm.s.cBasePages;
|
---|
609 | pVM->mm.s.cBasePages += cAddBasePages;
|
---|
610 | LogFlow(("MMR3IncreaseBaseReservation: +%RU64 (%RU64 -> %RU64\n", cAddBasePages, cOld, pVM->mm.s.cBasePages));
|
---|
611 | int rc = mmR3UpdateReservation(pVM);
|
---|
612 | if (RT_FAILURE(rc))
|
---|
613 | {
|
---|
614 | VMSetError(pVM, rc, RT_SRC_POS, N_("Failed to reserved physical memory for the RAM (%#RX64 -> %#RX64 + %#RX32)"),
|
---|
615 | cOld, pVM->mm.s.cBasePages, pVM->mm.s.cHandyPages);
|
---|
616 | pVM->mm.s.cBasePages = cOld;
|
---|
617 | }
|
---|
618 | return rc;
|
---|
619 | }
|
---|
620 |
|
---|
621 |
|
---|
622 | /**
|
---|
623 | * Interface for PGM to make reservations for handy pages in addition to the
|
---|
624 | * base memory.
|
---|
625 | *
|
---|
626 | * This can be called before MMR3InitPaging.
|
---|
627 | *
|
---|
628 | * @returns VBox status code. Will set VM error on failure.
|
---|
629 | * @param pVM The shared VM structure.
|
---|
630 | * @param cHandyPages The number of handy pages.
|
---|
631 | */
|
---|
632 | VMMR3DECL(int) MMR3ReserveHandyPages(PVM pVM, uint32_t cHandyPages)
|
---|
633 | {
|
---|
634 | AssertReturn(!pVM->mm.s.cHandyPages, VERR_WRONG_ORDER);
|
---|
635 |
|
---|
636 | pVM->mm.s.cHandyPages = cHandyPages;
|
---|
637 | LogFlow(("MMR3ReserveHandyPages: %RU32 (base %RU64)\n", pVM->mm.s.cHandyPages, pVM->mm.s.cBasePages));
|
---|
638 | int rc = mmR3UpdateReservation(pVM);
|
---|
639 | if (RT_FAILURE(rc))
|
---|
640 | {
|
---|
641 | VMSetError(pVM, rc, RT_SRC_POS, N_("Failed to reserved physical memory for the RAM (%#RX64 + %#RX32)"),
|
---|
642 | pVM->mm.s.cBasePages, pVM->mm.s.cHandyPages);
|
---|
643 | pVM->mm.s.cHandyPages = 0;
|
---|
644 | }
|
---|
645 | return rc;
|
---|
646 | }
|
---|
647 |
|
---|
648 |
|
---|
649 | /**
|
---|
650 | * Interface for PGM to adjust the reservation of fixed pages.
|
---|
651 | *
|
---|
652 | * This can be called before MMR3InitPaging.
|
---|
653 | *
|
---|
654 | * @returns VBox status code. Will set VM error on failure.
|
---|
655 | * @param pVM The shared VM structure.
|
---|
656 | * @param cDeltaFixedPages The number of pages to add (positive) or subtract (negative).
|
---|
657 | * @param pszDesc Some description associated with the reservation.
|
---|
658 | */
|
---|
659 | VMMR3DECL(int) MMR3AdjustFixedReservation(PVM pVM, int32_t cDeltaFixedPages, const char *pszDesc)
|
---|
660 | {
|
---|
661 | const uint32_t cOld = pVM->mm.s.cFixedPages;
|
---|
662 | pVM->mm.s.cFixedPages += cDeltaFixedPages;
|
---|
663 | LogFlow(("MMR3AdjustFixedReservation: %d (%u -> %u)\n", cDeltaFixedPages, cOld, pVM->mm.s.cFixedPages));
|
---|
664 | int rc = mmR3UpdateReservation(pVM);
|
---|
665 | if (RT_FAILURE(rc))
|
---|
666 | {
|
---|
667 | VMSetError(pVM, rc, RT_SRC_POS, N_("Failed to reserve physical memory (%#x -> %#x; %s)"),
|
---|
668 | cOld, pVM->mm.s.cFixedPages, pszDesc);
|
---|
669 | pVM->mm.s.cFixedPages = cOld;
|
---|
670 | }
|
---|
671 | return rc;
|
---|
672 | }
|
---|
673 |
|
---|
674 |
|
---|
675 | /**
|
---|
676 | * Interface for PGM to update the reservation of shadow pages.
|
---|
677 | *
|
---|
678 | * This can be called before MMR3InitPaging.
|
---|
679 | *
|
---|
680 | * @returns VBox status code. Will set VM error on failure.
|
---|
681 | * @param pVM The shared VM structure.
|
---|
682 | * @param cShadowPages The new page count.
|
---|
683 | */
|
---|
684 | VMMR3DECL(int) MMR3UpdateShadowReservation(PVM pVM, uint32_t cShadowPages)
|
---|
685 | {
|
---|
686 | const uint32_t cOld = pVM->mm.s.cShadowPages;
|
---|
687 | pVM->mm.s.cShadowPages = cShadowPages;
|
---|
688 | LogFlow(("MMR3UpdateShadowReservation: %u -> %u\n", cOld, pVM->mm.s.cShadowPages));
|
---|
689 | int rc = mmR3UpdateReservation(pVM);
|
---|
690 | if (RT_FAILURE(rc))
|
---|
691 | {
|
---|
692 | VMSetError(pVM, rc, RT_SRC_POS, N_("Failed to reserve physical memory for shadow page tables (%#x -> %#x)"), cOld, pVM->mm.s.cShadowPages);
|
---|
693 | pVM->mm.s.cShadowPages = cOld;
|
---|
694 | }
|
---|
695 | return rc;
|
---|
696 | }
|
---|
697 |
|
---|
698 |
|
---|
699 | /**
|
---|
700 | * Convert HC Physical address to HC Virtual address.
|
---|
701 | *
|
---|
702 | * @returns VBox status.
|
---|
703 | * @param pVM VM handle.
|
---|
704 | * @param HCPhys The host context virtual address.
|
---|
705 | * @param ppv Where to store the resulting address.
|
---|
706 | * @thread The Emulation Thread.
|
---|
707 | *
|
---|
708 | * @remarks Avoid whenever possible.
|
---|
709 | * Intended for the debugger facility only.
|
---|
710 | * @todo Rename to indicate the special usage.
|
---|
711 | */
|
---|
712 | VMMR3DECL(int) MMR3HCPhys2HCVirt(PVM pVM, RTHCPHYS HCPhys, void **ppv)
|
---|
713 | {
|
---|
714 | /*
|
---|
715 | * Try page tables.
|
---|
716 | */
|
---|
717 | int rc = MMPagePhys2PageTry(pVM, HCPhys, ppv);
|
---|
718 | if (RT_SUCCESS(rc))
|
---|
719 | return rc;
|
---|
720 |
|
---|
721 | /*
|
---|
722 | * Iterate thru the lookup records for HMA.
|
---|
723 | */
|
---|
724 | uint32_t off = HCPhys & PAGE_OFFSET_MASK;
|
---|
725 | HCPhys &= X86_PTE_PAE_PG_MASK;
|
---|
726 | PMMLOOKUPHYPER pCur = (PMMLOOKUPHYPER)((uint8_t *)pVM->mm.s.CTX_SUFF(pHyperHeap) + pVM->mm.s.offLookupHyper);
|
---|
727 | for (;;)
|
---|
728 | {
|
---|
729 | switch (pCur->enmType)
|
---|
730 | {
|
---|
731 | case MMLOOKUPHYPERTYPE_LOCKED:
|
---|
732 | {
|
---|
733 | PCRTHCPHYS paHCPhysPages = pCur->u.Locked.paHCPhysPages;
|
---|
734 | size_t iPage = pCur->cb >> PAGE_SHIFT;
|
---|
735 | while (iPage-- > 0)
|
---|
736 | if (paHCPhysPages[iPage] == HCPhys)
|
---|
737 | {
|
---|
738 | *ppv = (char *)pCur->u.Locked.pvR3 + (iPage << PAGE_SHIFT) + off;
|
---|
739 | return VINF_SUCCESS;
|
---|
740 | }
|
---|
741 | break;
|
---|
742 | }
|
---|
743 |
|
---|
744 | case MMLOOKUPHYPERTYPE_HCPHYS:
|
---|
745 | if (pCur->u.HCPhys.HCPhys - HCPhys < pCur->cb)
|
---|
746 | {
|
---|
747 | *ppv = (uint8_t *)pCur->u.HCPhys.pvR3 + pCur->u.HCPhys.HCPhys - HCPhys + off;
|
---|
748 | return VINF_SUCCESS;
|
---|
749 | }
|
---|
750 | break;
|
---|
751 |
|
---|
752 | case MMLOOKUPHYPERTYPE_GCPHYS: /* (for now we'll not allow these kind of conversions) */
|
---|
753 | case MMLOOKUPHYPERTYPE_MMIO2:
|
---|
754 | case MMLOOKUPHYPERTYPE_DYNAMIC:
|
---|
755 | break;
|
---|
756 |
|
---|
757 | default:
|
---|
758 | AssertMsgFailed(("enmType=%d\n", pCur->enmType));
|
---|
759 | break;
|
---|
760 | }
|
---|
761 |
|
---|
762 | /* next */
|
---|
763 | if (pCur->offNext == (int32_t)NIL_OFFSET)
|
---|
764 | break;
|
---|
765 | pCur = (PMMLOOKUPHYPER)((uint8_t *)pCur + pCur->offNext);
|
---|
766 | }
|
---|
767 | /* give up */
|
---|
768 | return VERR_INVALID_POINTER;
|
---|
769 | }
|
---|
770 |
|
---|
771 |
|
---|
772 | /**
|
---|
773 | * Read memory from GC virtual address using the current guest CR3.
|
---|
774 | *
|
---|
775 | * @returns VBox status.
|
---|
776 | * @param pVM VM handle.
|
---|
777 | * @param pvDst Destination address (HC of course).
|
---|
778 | * @param GCPtr GC virtual address.
|
---|
779 | * @param cb Number of bytes to read.
|
---|
780 | *
|
---|
781 | * @remarks Intended for the debugger facility only.
|
---|
782 | * @todo Move to DBGF, it's only selecting which functions to use!
|
---|
783 | */
|
---|
784 | VMMR3DECL(int) MMR3ReadGCVirt(PVM pVM, void *pvDst, RTGCPTR GCPtr, size_t cb)
|
---|
785 | {
|
---|
786 | if (GCPtr - pVM->mm.s.pvHyperAreaGC < pVM->mm.s.cbHyperArea)
|
---|
787 | return MMR3HyperReadGCVirt(pVM, pvDst, GCPtr, cb);
|
---|
788 | return PGMPhysSimpleReadGCPtr(pVM, pvDst, GCPtr, cb);
|
---|
789 | }
|
---|
790 |
|
---|
791 |
|
---|
792 | /**
|
---|
793 | * Write to memory at GC virtual address translated using the current guest CR3.
|
---|
794 | *
|
---|
795 | * @returns VBox status.
|
---|
796 | * @param pVM VM handle.
|
---|
797 | * @param GCPtrDst GC virtual address.
|
---|
798 | * @param pvSrc The source address (HC of course).
|
---|
799 | * @param cb Number of bytes to read.
|
---|
800 | *
|
---|
801 | * @remarks Intended for the debugger facility only.
|
---|
802 | * @todo Move to DBGF, it's only selecting which functions to use!
|
---|
803 | */
|
---|
804 | VMMR3DECL(int) MMR3WriteGCVirt(PVM pVM, RTGCPTR GCPtrDst, const void *pvSrc, size_t cb)
|
---|
805 | {
|
---|
806 | if (GCPtrDst - pVM->mm.s.pvHyperAreaGC < pVM->mm.s.cbHyperArea)
|
---|
807 | return VERR_ACCESS_DENIED;
|
---|
808 | return PGMPhysSimpleWriteGCPtr(pVM, GCPtrDst, pvSrc, cb);
|
---|
809 | }
|
---|
810 |
|
---|
811 |
|
---|
812 | /**
|
---|
813 | * Get the size of the base RAM.
|
---|
814 | * This usually means the size of the first contigous block of physical memory.
|
---|
815 | *
|
---|
816 | * @returns The guest base RAM size.
|
---|
817 | * @param pVM The VM handle.
|
---|
818 | * @thread Any.
|
---|
819 | *
|
---|
820 | * @deprecated
|
---|
821 | */
|
---|
822 | VMMR3DECL(uint64_t) MMR3PhysGetRamSize(PVM pVM)
|
---|
823 | {
|
---|
824 | return pVM->mm.s.cbRamBase;
|
---|
825 | }
|
---|
826 |
|
---|