1 | /* $Id: PGMSavedState.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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2 | /** @file
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3 | * PGM - Page Manager and Monitor, The Saved State Part.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2024 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 |
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29 | /*********************************************************************************************************************************
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30 | * Header Files *
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31 | *********************************************************************************************************************************/
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32 | #define LOG_GROUP LOG_GROUP_PGM
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33 | #define VBOX_WITHOUT_PAGING_BIT_FIELDS /* 64-bit bitfields are just asking for trouble. See @bugref{9841} and others. */
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34 | #include <VBox/vmm/pgm.h>
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35 | #include <VBox/vmm/stam.h>
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36 | #include <VBox/vmm/ssm.h>
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37 | #include <VBox/vmm/pdmdrv.h>
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38 | #include <VBox/vmm/pdmdev.h>
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39 | #include "PGMInternal.h"
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40 | #include <VBox/vmm/vmcc.h>
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41 | #include "PGMInline.h"
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42 |
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43 | #include <VBox/param.h>
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44 | #include <VBox/err.h>
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45 |
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46 | #include <iprt/asm.h>
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47 | #include <iprt/assert.h>
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48 | #include <iprt/crc.h>
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49 | #include <iprt/mem.h>
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50 | #include <iprt/sha.h>
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51 | #include <iprt/string.h>
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52 | #include <iprt/thread.h>
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53 |
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54 |
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55 | /*********************************************************************************************************************************
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56 | * Defined Constants And Macros *
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57 | *********************************************************************************************************************************/
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58 | /** Saved state data unit version. */
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59 | #define PGM_SAVED_STATE_VERSION 14
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60 | /** Saved state data unit version before the PAE PDPE registers. */
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61 | #define PGM_SAVED_STATE_VERSION_PRE_PAE 13
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62 | /** Saved state data unit version after this includes ballooned page flags in
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63 | * the state (see @bugref{5515}). */
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64 | #define PGM_SAVED_STATE_VERSION_BALLOON_BROKEN 12
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65 | /** Saved state before the balloon change. */
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66 | #define PGM_SAVED_STATE_VERSION_PRE_BALLOON 11
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67 | /** Saved state data unit version used during 3.1 development, misses the RAM
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68 | * config. */
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69 | #define PGM_SAVED_STATE_VERSION_NO_RAM_CFG 10
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70 | /** Saved state data unit version for 3.0 (pre teleportation). */
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71 | #define PGM_SAVED_STATE_VERSION_3_0_0 9
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72 | /** Saved state data unit version for 2.2.2 and later. */
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73 | #define PGM_SAVED_STATE_VERSION_2_2_2 8
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74 | /** Saved state data unit version for 2.2.0. */
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75 | #define PGM_SAVED_STATE_VERSION_RR_DESC 7
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76 | /** Saved state data unit version. */
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77 | #define PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE 6
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78 |
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79 |
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80 | /** @name Sparse state record types
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81 | * @{ */
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82 | /** Zero page. No data. */
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83 | #define PGM_STATE_REC_RAM_ZERO UINT8_C(0x00)
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84 | /** Raw page. */
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85 | #define PGM_STATE_REC_RAM_RAW UINT8_C(0x01)
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86 | /** Raw MMIO2 page. */
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87 | #define PGM_STATE_REC_MMIO2_RAW UINT8_C(0x02)
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88 | /** Zero MMIO2 page. */
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89 | #define PGM_STATE_REC_MMIO2_ZERO UINT8_C(0x03)
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90 | /** Virgin ROM page. Followed by protection (8-bit) and the raw bits. */
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91 | #define PGM_STATE_REC_ROM_VIRGIN UINT8_C(0x04)
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92 | /** Raw shadowed ROM page. The protection (8-bit) precedes the raw bits. */
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93 | #define PGM_STATE_REC_ROM_SHW_RAW UINT8_C(0x05)
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94 | /** Zero shadowed ROM page. The protection (8-bit) is the only payload. */
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95 | #define PGM_STATE_REC_ROM_SHW_ZERO UINT8_C(0x06)
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96 | /** ROM protection (8-bit). */
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97 | #define PGM_STATE_REC_ROM_PROT UINT8_C(0x07)
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98 | /** Ballooned page. No data. */
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99 | #define PGM_STATE_REC_RAM_BALLOONED UINT8_C(0x08)
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100 | /** The last record type. */
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101 | #define PGM_STATE_REC_LAST PGM_STATE_REC_RAM_BALLOONED
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102 | /** End marker. */
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103 | #define PGM_STATE_REC_END UINT8_C(0xff)
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104 | /** Flag indicating that the data is preceded by the page address.
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105 | * For RAW pages this is a RTGCPHYS. For MMIO2 and ROM pages this is a 8-bit
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106 | * range ID and a 32-bit page index.
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107 | */
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108 | #define PGM_STATE_REC_FLAG_ADDR UINT8_C(0x80)
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109 | /** @} */
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110 |
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111 | /** The CRC-32 for a zero page. */
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112 | #define PGM_STATE_CRC32_ZERO_PAGE UINT32_C(0xc71c0011)
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113 | /** The CRC-32 for a zero half page. */
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114 | #define PGM_STATE_CRC32_ZERO_HALF_PAGE UINT32_C(0xf1e8ba9e)
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115 |
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116 |
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117 |
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118 | /** @name Old Page types used in older saved states.
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119 | * @{ */
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120 | /** Old saved state: The usual invalid zero entry. */
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121 | #define PGMPAGETYPE_OLD_INVALID 0
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122 | /** Old saved state: RAM page. (RWX) */
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123 | #define PGMPAGETYPE_OLD_RAM 1
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124 | /** Old saved state: MMIO2 page. (RWX) */
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125 | #define PGMPAGETYPE_OLD_MMIO2 1
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126 | /** Old saved state: MMIO2 page aliased over an MMIO page. (RWX)
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127 | * See PGMHandlerPhysicalPageAlias(). */
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128 | #define PGMPAGETYPE_OLD_MMIO2_ALIAS_MMIO 2
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129 | /** Old saved state: Shadowed ROM. (RWX) */
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130 | #define PGMPAGETYPE_OLD_ROM_SHADOW 3
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131 | /** Old saved state: ROM page. (R-X) */
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132 | #define PGMPAGETYPE_OLD_ROM 4
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133 | /** Old saved state: MMIO page. (---) */
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134 | #define PGMPAGETYPE_OLD_MMIO 5
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135 | /** @} */
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136 |
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137 |
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138 | /*********************************************************************************************************************************
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139 | * Structures and Typedefs *
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140 | *********************************************************************************************************************************/
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141 | /** For loading old saved states. (pre-smp) */
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142 | typedef struct
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143 | {
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144 | /** If set no conflict checks are required. (boolean) */
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145 | bool fMappingsFixed;
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146 | /** Size of fixed mapping */
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147 | uint32_t cbMappingFixed;
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148 | /** Base address (GC) of fixed mapping */
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149 | RTGCPTR GCPtrMappingFixed;
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150 | /** A20 gate mask.
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151 | * Our current approach to A20 emulation is to let REM do it and don't bother
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152 | * anywhere else. The interesting guests will be operating with it enabled anyway.
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153 | * But should the need arise, we'll subject physical addresses to this mask. */
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154 | RTGCPHYS GCPhysA20Mask;
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155 | /** A20 gate state - boolean! */
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156 | bool fA20Enabled;
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157 | /** The guest paging mode. */
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158 | PGMMODE enmGuestMode;
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159 | } PGMOLD;
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160 |
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161 |
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162 | /*********************************************************************************************************************************
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163 | * Global Variables *
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164 | *********************************************************************************************************************************/
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165 | /** PGM fields to save/load. */
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166 |
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167 | static const SSMFIELD s_aPGMFields[] =
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168 | {
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169 | SSMFIELD_ENTRY_OLD( fMappingsFixed, sizeof(bool)),
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170 | SSMFIELD_ENTRY_OLD_GCPTR( GCPtrMappingFixed),
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171 | SSMFIELD_ENTRY_OLD( cbMappingFixed, sizeof(uint32_t)),
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172 | SSMFIELD_ENTRY( PGM, cBalloonedPages),
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173 | SSMFIELD_ENTRY_TERM()
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174 | };
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175 |
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176 | static const SSMFIELD s_aPGMFieldsPreBalloon[] =
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177 | {
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178 | SSMFIELD_ENTRY_OLD( fMappingsFixed, sizeof(bool)),
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179 | SSMFIELD_ENTRY_OLD_GCPTR( GCPtrMappingFixed),
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180 | SSMFIELD_ENTRY_OLD( cbMappingFixed, sizeof(uint32_t)),
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181 | SSMFIELD_ENTRY_TERM()
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182 | };
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183 |
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184 | static const SSMFIELD s_aPGMCpuFields[] =
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185 | {
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186 | SSMFIELD_ENTRY( PGMCPU, fA20Enabled),
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187 | SSMFIELD_ENTRY_GCPHYS( PGMCPU, GCPhysA20Mask),
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188 | SSMFIELD_ENTRY( PGMCPU, enmGuestMode),
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189 | SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[0]),
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190 | SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[1]),
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191 | SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[2]),
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192 | SSMFIELD_ENTRY( PGMCPU, aGCPhysGstPaePDs[3]),
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193 | SSMFIELD_ENTRY_TERM()
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194 | };
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195 |
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196 | static const SSMFIELD s_aPGMCpuFieldsPrePae[] =
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197 | {
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198 | SSMFIELD_ENTRY( PGMCPU, fA20Enabled),
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199 | SSMFIELD_ENTRY_GCPHYS( PGMCPU, GCPhysA20Mask),
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200 | SSMFIELD_ENTRY( PGMCPU, enmGuestMode),
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201 | SSMFIELD_ENTRY_TERM()
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202 | };
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203 |
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204 | static const SSMFIELD s_aPGMFields_Old[] =
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205 | {
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206 | SSMFIELD_ENTRY( PGMOLD, fMappingsFixed),
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207 | SSMFIELD_ENTRY_GCPTR( PGMOLD, GCPtrMappingFixed),
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208 | SSMFIELD_ENTRY( PGMOLD, cbMappingFixed),
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209 | SSMFIELD_ENTRY( PGMOLD, fA20Enabled),
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210 | SSMFIELD_ENTRY_GCPHYS( PGMOLD, GCPhysA20Mask),
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211 | SSMFIELD_ENTRY( PGMOLD, enmGuestMode),
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212 | SSMFIELD_ENTRY_TERM()
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213 | };
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214 |
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215 |
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216 | /**
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217 | * Find the ROM tracking structure for the given page.
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218 | *
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219 | * @returns Pointer to the ROM page structure. NULL if the caller didn't check
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220 | * that it's a ROM page.
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221 | * @param pVM The cross context VM structure.
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222 | * @param GCPhys The address of the ROM page.
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223 | */
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224 | static PPGMROMPAGE pgmR3GetRomPage(PVM pVM, RTGCPHYS GCPhys) /** @todo change this to take a hint. */
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225 | {
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226 | uint32_t const cRomRanges = RT_MIN(pVM->pgm.s.cRomRanges, RT_ELEMENTS(pVM->pgm.s.apRomRanges));
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227 | for (uint32_t idx = 0; idx < cRomRanges; idx++)
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228 | {
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229 | PPGMROMRANGE const pRomRange = pVM->pgm.s.apRomRanges[idx];
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230 | RTGCPHYS const off = GCPhys - pRomRange->GCPhys;
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231 | if (GCPhys - pRomRange->GCPhys < pRomRange->cb)
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232 | return &pRomRange->aPages[off >> GUEST_PAGE_SHIFT];
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233 | }
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234 | return NULL;
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235 | }
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236 |
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237 |
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238 | /**
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239 | * Prepares the ROM pages for a live save.
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240 | *
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241 | * @returns VBox status code.
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242 | * @param pVM The cross context VM structure.
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243 | */
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244 | static int pgmR3PrepRomPages(PVM pVM)
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245 | {
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246 | /*
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247 | * Initialize the live save tracking in the ROM page descriptors.
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248 | */
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249 | PGM_LOCK_VOID(pVM);
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250 | uint32_t const cRomRanges = RT_MIN(pVM->pgm.s.cRomRanges, RT_ELEMENTS(pVM->pgm.s.apRomRanges));
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251 | for (uint32_t idx = 0; idx < cRomRanges; idx++)
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252 | {
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253 | PPGMROMRANGE const pRom = pVM->pgm.s.apRomRanges[idx];
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254 | uint32_t const cPages = pRom->cb >> GUEST_PAGE_SHIFT;
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255 | PPGMRAMRANGE pRamHint = NULL;
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256 |
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257 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
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258 | {
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259 | pRom->aPages[iPage].LiveSave.u8Prot = (uint8_t)PGMROMPROT_INVALID;
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260 | pRom->aPages[iPage].LiveSave.fWrittenTo = false;
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261 | pRom->aPages[iPage].LiveSave.fDirty = true;
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262 | pRom->aPages[iPage].LiveSave.fDirtiedRecently = true;
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263 | if (!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED))
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264 | {
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265 | if (PGMROMPROT_IS_ROM(pRom->aPages[iPage].enmProt))
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266 | pRom->aPages[iPage].LiveSave.fWrittenTo = !PGM_PAGE_IS_ZERO(&pRom->aPages[iPage].Shadow) && !PGM_PAGE_IS_BALLOONED(&pRom->aPages[iPage].Shadow);
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267 | else
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268 | {
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269 | RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
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270 | PPGMPAGE pPage;
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271 | int rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
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272 | AssertLogRelMsgRC(rc, ("%Rrc GCPhys=%RGp\n", rc, GCPhys));
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273 | if (RT_SUCCESS(rc))
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274 | pRom->aPages[iPage].LiveSave.fWrittenTo = !PGM_PAGE_IS_ZERO(pPage) && !PGM_PAGE_IS_BALLOONED(pPage);
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275 | else
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276 | pRom->aPages[iPage].LiveSave.fWrittenTo = !PGM_PAGE_IS_ZERO(&pRom->aPages[iPage].Shadow) && !PGM_PAGE_IS_BALLOONED(&pRom->aPages[iPage].Shadow);
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277 | }
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278 | }
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279 | }
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280 |
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281 | pVM->pgm.s.LiveSave.Rom.cDirtyPages += cPages;
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282 | if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
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283 | pVM->pgm.s.LiveSave.Rom.cDirtyPages += cPages;
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284 | }
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285 | PGM_UNLOCK(pVM);
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286 |
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287 | return VINF_SUCCESS;
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288 | }
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289 |
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290 |
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291 | /**
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292 | * Assigns IDs to the ROM ranges and saves them.
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293 | *
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294 | * @returns VBox status code.
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295 | * @param pVM The cross context VM structure.
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296 | * @param pSSM Saved state handle.
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297 | */
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298 | static int pgmR3SaveRomRanges(PVM pVM, PSSMHANDLE pSSM)
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299 | {
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300 | PGM_LOCK_VOID(pVM);
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301 | uint32_t const cRomRanges = RT_MIN(pVM->pgm.s.cRomRanges, RT_ELEMENTS(pVM->pgm.s.apRomRanges));
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302 | for (uint32_t idx = 0; idx < cRomRanges; idx++)
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303 | {
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304 | PPGMROMRANGE const pRom = pVM->pgm.s.apRomRanges[idx];
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305 | uint8_t const idSavedState = (uint8_t)(idx + 1);
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306 | pRom->idSavedState = idSavedState;
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307 | SSMR3PutU8(pSSM, idSavedState);
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308 | SSMR3PutStrZ(pSSM, ""); /* device name */
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309 | SSMR3PutU32(pSSM, 0); /* device instance */
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310 | SSMR3PutU8(pSSM, 0); /* region */
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311 | SSMR3PutStrZ(pSSM, pRom->pszDesc);
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312 | SSMR3PutGCPhys(pSSM, pRom->GCPhys);
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313 | int rc = SSMR3PutGCPhys(pSSM, pRom->cb);
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314 | if (RT_FAILURE(rc))
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315 | break;
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316 | }
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317 | PGM_UNLOCK(pVM);
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318 | return SSMR3PutU8(pSSM, UINT8_MAX);
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319 | }
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320 |
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321 |
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322 | /**
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323 | * Loads the ROM range ID assignments.
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324 | *
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325 | * @returns VBox status code.
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326 | *
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327 | * @param pVM The cross context VM structure.
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328 | * @param pSSM The saved state handle.
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329 | */
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330 | static int pgmR3LoadRomRanges(PVM pVM, PSSMHANDLE pSSM)
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331 | {
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332 | PGM_LOCK_ASSERT_OWNER(pVM);
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333 |
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334 | uint32_t const cRomRanges = RT_MIN(pVM->pgm.s.cRomRanges, RT_ELEMENTS(pVM->pgm.s.apRomRanges));
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335 | for (uint32_t idx = 0; idx < cRomRanges; idx++)
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336 | pVM->pgm.s.apRomRanges[idx]->idSavedState = UINT8_MAX;
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337 |
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338 | for (;;)
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339 | {
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340 | /*
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341 | * Read the data.
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342 | */
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343 | uint8_t id;
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344 | int rc = SSMR3GetU8(pSSM, &id);
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345 | if (RT_FAILURE(rc))
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346 | return rc;
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347 | if (id == UINT8_MAX)
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348 | {
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349 | /*
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350 | * End of ROM ranges. Check that all are accounted for.
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351 | */
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352 | for (uint32_t idx = 0; idx < cRomRanges; idx++)
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353 | {
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354 | PPGMROMRANGE const pRom = pVM->pgm.s.apRomRanges[idx];
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355 | if (pRom->idSavedState != UINT8_MAX)
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356 | { /* likely */ }
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357 | else if (pRom->fFlags & PGMPHYS_ROM_FLAGS_MAYBE_MISSING_FROM_STATE)
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358 | LogRel(("PGM: The '%s' ROM was not found in the saved state, but it is marked as maybe-missing, so that's probably okay.\n",
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359 | pRom->pszDesc));
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360 | else
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361 | AssertLogRelMsg(pRom->idSavedState != UINT8_MAX,
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362 | ("The '%s' ROM was not found in the saved state. Probably due to some misconfiguration\n",
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363 | pRom->pszDesc));
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364 | }
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365 | return VINF_SUCCESS; /* the end */
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366 | }
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367 | AssertLogRelReturn(id != 0, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
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368 |
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369 | char szDevName[RT_SIZEOFMEMB(PDMDEVREG, szName)];
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370 | rc = SSMR3GetStrZ(pSSM, szDevName, sizeof(szDevName));
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371 | AssertLogRelRCReturn(rc, rc);
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372 |
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373 | uint32_t uInstance;
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374 | SSMR3GetU32(pSSM, &uInstance);
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375 | uint8_t iRegion;
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376 | SSMR3GetU8(pSSM, &iRegion);
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377 |
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378 | char szDesc[64];
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379 | rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
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380 | AssertLogRelRCReturn(rc, rc);
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381 |
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382 | RTGCPHYS GCPhys;
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383 | SSMR3GetGCPhys(pSSM, &GCPhys);
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384 | RTGCPHYS cb;
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385 | rc = SSMR3GetGCPhys(pSSM, &cb);
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386 | if (RT_FAILURE(rc))
|
---|
387 | return rc;
|
---|
388 | AssertLogRelMsgReturn(!(GCPhys & GUEST_PAGE_OFFSET_MASK), ("GCPhys=%RGp %s\n", GCPhys, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
389 | AssertLogRelMsgReturn(!(cb & GUEST_PAGE_OFFSET_MASK), ("cb=%RGp %s\n", cb, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
390 |
|
---|
391 | /*
|
---|
392 | * Locate a matching ROM range.
|
---|
393 | */
|
---|
394 | AssertLogRelMsgReturn( uInstance == 0
|
---|
395 | && iRegion == 0
|
---|
396 | && szDevName[0] == '\0',
|
---|
397 | ("GCPhys=%RGp LB %RGp %s\n", GCPhys, cb, szDesc),
|
---|
398 | VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
399 | uint32_t idx;
|
---|
400 | for (idx = 0; idx < cRomRanges; idx++)
|
---|
401 | {
|
---|
402 | PPGMROMRANGE const pRom = pVM->pgm.s.apRomRanges[idx];
|
---|
403 | if ( pRom->idSavedState == UINT8_MAX
|
---|
404 | && !strcmp(pRom->pszDesc, szDesc))
|
---|
405 | {
|
---|
406 | pRom->idSavedState = id;
|
---|
407 | break;
|
---|
408 | }
|
---|
409 | }
|
---|
410 | if (idx >= cRomRanges)
|
---|
411 | return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("ROM at %RGp LB %RGp by the name '%s' was not found"),
|
---|
412 | GCPhys, cb, szDesc);
|
---|
413 | } /* forever */
|
---|
414 | }
|
---|
415 |
|
---|
416 |
|
---|
417 | /**
|
---|
418 | * Scan ROM pages.
|
---|
419 | *
|
---|
420 | * @param pVM The cross context VM structure.
|
---|
421 | */
|
---|
422 | static void pgmR3ScanRomPages(PVM pVM)
|
---|
423 | {
|
---|
424 | /*
|
---|
425 | * The shadow ROMs.
|
---|
426 | */
|
---|
427 | PGM_LOCK_VOID(pVM);
|
---|
428 | uint32_t const cRomRanges = RT_MIN(pVM->pgm.s.cRomRanges, RT_ELEMENTS(pVM->pgm.s.apRomRanges));
|
---|
429 | for (uint32_t idx = 0; idx < cRomRanges; idx++)
|
---|
430 | {
|
---|
431 | PPGMROMRANGE const pRom = pVM->pgm.s.apRomRanges[idx];
|
---|
432 | if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
|
---|
433 | {
|
---|
434 | uint32_t const cPages = pRom->cb >> GUEST_PAGE_SHIFT;
|
---|
435 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
436 | {
|
---|
437 | PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
|
---|
438 | if (pRomPage->LiveSave.fWrittenTo)
|
---|
439 | {
|
---|
440 | pRomPage->LiveSave.fWrittenTo = false;
|
---|
441 | if (!pRomPage->LiveSave.fDirty)
|
---|
442 | {
|
---|
443 | pRomPage->LiveSave.fDirty = true;
|
---|
444 | pVM->pgm.s.LiveSave.Rom.cReadyPages--;
|
---|
445 | pVM->pgm.s.LiveSave.Rom.cDirtyPages++;
|
---|
446 | }
|
---|
447 | pRomPage->LiveSave.fDirtiedRecently = true;
|
---|
448 | }
|
---|
449 | else
|
---|
450 | pRomPage->LiveSave.fDirtiedRecently = false;
|
---|
451 | }
|
---|
452 | }
|
---|
453 | }
|
---|
454 | PGM_UNLOCK(pVM);
|
---|
455 | }
|
---|
456 |
|
---|
457 |
|
---|
458 | /**
|
---|
459 | * Takes care of the virgin ROM pages in the first pass.
|
---|
460 | *
|
---|
461 | * This is an attempt at simplifying the handling of ROM pages a little bit.
|
---|
462 | * This ASSUMES that no new ROM ranges will be added and that they won't be
|
---|
463 | * relinked in any way.
|
---|
464 | *
|
---|
465 | * @param pVM The cross context VM structure.
|
---|
466 | * @param pSSM The SSM handle.
|
---|
467 | * @param fLiveSave Whether we're in a live save or not.
|
---|
468 | */
|
---|
469 | static int pgmR3SaveRomVirginPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave)
|
---|
470 | {
|
---|
471 | PGM_LOCK_VOID(pVM);
|
---|
472 | uint32_t const cRomRanges = RT_MIN(pVM->pgm.s.cRomRanges, RT_ELEMENTS(pVM->pgm.s.apRomRanges));
|
---|
473 | for (uint32_t idx = 0; idx < cRomRanges; idx++)
|
---|
474 | {
|
---|
475 | PPGMROMRANGE const pRom = pVM->pgm.s.apRomRanges[idx];
|
---|
476 | uint32_t const cPages = pRom->cb >> GUEST_PAGE_SHIFT;
|
---|
477 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
478 | {
|
---|
479 | RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
|
---|
480 | PGMROMPROT enmProt = pRom->aPages[iPage].enmProt;
|
---|
481 |
|
---|
482 | /* Get the virgin page descriptor. */
|
---|
483 | PPGMPAGE pPage;
|
---|
484 | if (PGMROMPROT_IS_ROM(enmProt))
|
---|
485 | pPage = pgmPhysGetPage(pVM, GCPhys);
|
---|
486 | else
|
---|
487 | pPage = &pRom->aPages[iPage].Virgin;
|
---|
488 |
|
---|
489 | /* Get the page bits. (Cannot use pgmPhysGCPhys2CCPtrInternalReadOnly here!) */
|
---|
490 | int rc = VINF_SUCCESS;
|
---|
491 | char abPage[GUEST_PAGE_SIZE];
|
---|
492 | if ( !PGM_PAGE_IS_ZERO(pPage)
|
---|
493 | && !PGM_PAGE_IS_BALLOONED(pPage))
|
---|
494 | {
|
---|
495 | void const *pvPage;
|
---|
496 | #ifdef VBOX_WITH_PGM_NEM_MODE
|
---|
497 | if (!PGMROMPROT_IS_ROM(enmProt) && PGM_IS_IN_NEM_MODE(pVM))
|
---|
498 | pvPage = &pRom->pbR3Alternate[iPage << GUEST_PAGE_SHIFT];
|
---|
499 | else
|
---|
500 | #endif
|
---|
501 | rc = pgmPhysPageMapReadOnly(pVM, pPage, GCPhys, &pvPage);
|
---|
502 | if (RT_SUCCESS(rc))
|
---|
503 | memcpy(abPage, pvPage, GUEST_PAGE_SIZE);
|
---|
504 | }
|
---|
505 | else
|
---|
506 | RT_ZERO(abPage);
|
---|
507 | PGM_UNLOCK(pVM);
|
---|
508 | AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
|
---|
509 |
|
---|
510 | /* Save it. */
|
---|
511 | if (iPage > 0)
|
---|
512 | SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_VIRGIN);
|
---|
513 | else
|
---|
514 | {
|
---|
515 | SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_VIRGIN | PGM_STATE_REC_FLAG_ADDR);
|
---|
516 | SSMR3PutU8(pSSM, pRom->idSavedState);
|
---|
517 | SSMR3PutU32(pSSM, iPage);
|
---|
518 | }
|
---|
519 | SSMR3PutU8(pSSM, (uint8_t)enmProt);
|
---|
520 | rc = SSMR3PutMem(pSSM, abPage, GUEST_PAGE_SIZE);
|
---|
521 | if (RT_FAILURE(rc))
|
---|
522 | return rc;
|
---|
523 |
|
---|
524 | /* Update state. */
|
---|
525 | PGM_LOCK_VOID(pVM);
|
---|
526 | pRom->aPages[iPage].LiveSave.u8Prot = (uint8_t)enmProt;
|
---|
527 | if (fLiveSave)
|
---|
528 | {
|
---|
529 | pVM->pgm.s.LiveSave.Rom.cDirtyPages--;
|
---|
530 | pVM->pgm.s.LiveSave.Rom.cReadyPages++;
|
---|
531 | pVM->pgm.s.LiveSave.cSavedPages++;
|
---|
532 | }
|
---|
533 | }
|
---|
534 | }
|
---|
535 | PGM_UNLOCK(pVM);
|
---|
536 | return VINF_SUCCESS;
|
---|
537 | }
|
---|
538 |
|
---|
539 |
|
---|
540 | /**
|
---|
541 | * Saves dirty pages in the shadowed ROM ranges.
|
---|
542 | *
|
---|
543 | * Used by pgmR3LiveExecPart2 and pgmR3SaveExecMemory.
|
---|
544 | *
|
---|
545 | * @returns VBox status code.
|
---|
546 | * @param pVM The cross context VM structure.
|
---|
547 | * @param pSSM The SSM handle.
|
---|
548 | * @param fLiveSave Whether it's a live save or not.
|
---|
549 | * @param fFinalPass Whether this is the final pass or not.
|
---|
550 | */
|
---|
551 | static int pgmR3SaveShadowedRomPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, bool fFinalPass)
|
---|
552 | {
|
---|
553 | /*
|
---|
554 | * The Shadowed ROMs.
|
---|
555 | *
|
---|
556 | * ASSUMES that the ROM ranges are fixed.
|
---|
557 | * ASSUMES that all the ROM ranges are mapped.
|
---|
558 | */
|
---|
559 | PGM_LOCK_VOID(pVM);
|
---|
560 | uint32_t const cRomRanges = RT_MIN(pVM->pgm.s.cRomRanges, RT_ELEMENTS(pVM->pgm.s.apRomRanges));
|
---|
561 | for (uint32_t idx = 0; idx < cRomRanges; idx++)
|
---|
562 | {
|
---|
563 | PPGMROMRANGE const pRom = pVM->pgm.s.apRomRanges[idx];
|
---|
564 | if (pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)
|
---|
565 | {
|
---|
566 | uint32_t const cPages = pRom->cb >> GUEST_PAGE_SHIFT;
|
---|
567 | uint32_t iPrevPage = cPages;
|
---|
568 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
569 | {
|
---|
570 | PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
|
---|
571 | if ( !fLiveSave
|
---|
572 | || ( pRomPage->LiveSave.fDirty
|
---|
573 | && ( ( !pRomPage->LiveSave.fDirtiedRecently
|
---|
574 | && !pRomPage->LiveSave.fWrittenTo)
|
---|
575 | || fFinalPass
|
---|
576 | )
|
---|
577 | )
|
---|
578 | )
|
---|
579 | {
|
---|
580 | uint8_t abPage[GUEST_PAGE_SIZE];
|
---|
581 | PGMROMPROT enmProt = pRomPage->enmProt;
|
---|
582 | RTGCPHYS GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
|
---|
583 | PPGMPAGE pPage = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Shadow : pgmPhysGetPage(pVM, GCPhys);
|
---|
584 | bool fZero = PGM_PAGE_IS_ZERO(pPage) || PGM_PAGE_IS_BALLOONED(pPage); Assert(!PGM_PAGE_IS_BALLOONED(pPage)); /* Shouldn't be ballooned. */
|
---|
585 | int rc = VINF_SUCCESS;
|
---|
586 | if (!fZero)
|
---|
587 | {
|
---|
588 | void const *pvPage;
|
---|
589 | #ifdef VBOX_WITH_PGM_NEM_MODE
|
---|
590 | if (PGMROMPROT_IS_ROM(enmProt) && PGM_IS_IN_NEM_MODE(pVM))
|
---|
591 | pvPage = &pRom->pbR3Alternate[iPage << GUEST_PAGE_SHIFT];
|
---|
592 | else
|
---|
593 | #endif
|
---|
594 | rc = pgmPhysPageMapReadOnly(pVM, pPage, GCPhys, &pvPage);
|
---|
595 | if (RT_SUCCESS(rc))
|
---|
596 | memcpy(abPage, pvPage, GUEST_PAGE_SIZE);
|
---|
597 | }
|
---|
598 | if (fLiveSave && RT_SUCCESS(rc))
|
---|
599 | {
|
---|
600 | pRomPage->LiveSave.u8Prot = (uint8_t)enmProt;
|
---|
601 | pRomPage->LiveSave.fDirty = false;
|
---|
602 | pVM->pgm.s.LiveSave.Rom.cReadyPages++;
|
---|
603 | pVM->pgm.s.LiveSave.Rom.cDirtyPages--;
|
---|
604 | pVM->pgm.s.LiveSave.cSavedPages++;
|
---|
605 | }
|
---|
606 | PGM_UNLOCK(pVM);
|
---|
607 | AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
|
---|
608 |
|
---|
609 | if (iPage - 1U == iPrevPage && iPage > 0)
|
---|
610 | SSMR3PutU8(pSSM, (fZero ? PGM_STATE_REC_ROM_SHW_ZERO : PGM_STATE_REC_ROM_SHW_RAW));
|
---|
611 | else
|
---|
612 | {
|
---|
613 | SSMR3PutU8(pSSM, (fZero ? PGM_STATE_REC_ROM_SHW_ZERO : PGM_STATE_REC_ROM_SHW_RAW) | PGM_STATE_REC_FLAG_ADDR);
|
---|
614 | SSMR3PutU8(pSSM, pRom->idSavedState);
|
---|
615 | SSMR3PutU32(pSSM, iPage);
|
---|
616 | }
|
---|
617 | rc = SSMR3PutU8(pSSM, (uint8_t)enmProt);
|
---|
618 | if (!fZero)
|
---|
619 | rc = SSMR3PutMem(pSSM, abPage, GUEST_PAGE_SIZE);
|
---|
620 | if (RT_FAILURE(rc))
|
---|
621 | return rc;
|
---|
622 |
|
---|
623 | PGM_LOCK_VOID(pVM);
|
---|
624 | iPrevPage = iPage;
|
---|
625 | }
|
---|
626 | /*
|
---|
627 | * In the final pass, make sure the protection is in sync.
|
---|
628 | */
|
---|
629 | else if ( fFinalPass
|
---|
630 | && pRomPage->LiveSave.u8Prot != pRomPage->enmProt)
|
---|
631 | {
|
---|
632 | PGMROMPROT enmProt = pRomPage->enmProt;
|
---|
633 | pRomPage->LiveSave.u8Prot = (uint8_t)enmProt;
|
---|
634 | PGM_UNLOCK(pVM);
|
---|
635 |
|
---|
636 | if (iPage - 1U == iPrevPage && iPage > 0)
|
---|
637 | SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_PROT);
|
---|
638 | else
|
---|
639 | {
|
---|
640 | SSMR3PutU8(pSSM, PGM_STATE_REC_ROM_PROT | PGM_STATE_REC_FLAG_ADDR);
|
---|
641 | SSMR3PutU8(pSSM, pRom->idSavedState);
|
---|
642 | SSMR3PutU32(pSSM, iPage);
|
---|
643 | }
|
---|
644 | int rc = SSMR3PutU8(pSSM, (uint8_t)enmProt);
|
---|
645 | if (RT_FAILURE(rc))
|
---|
646 | return rc;
|
---|
647 |
|
---|
648 | PGM_LOCK_VOID(pVM);
|
---|
649 | iPrevPage = iPage;
|
---|
650 | }
|
---|
651 | }
|
---|
652 | }
|
---|
653 | }
|
---|
654 | PGM_UNLOCK(pVM);
|
---|
655 | return VINF_SUCCESS;
|
---|
656 | }
|
---|
657 |
|
---|
658 |
|
---|
659 | /**
|
---|
660 | * Cleans up ROM pages after a live save.
|
---|
661 | *
|
---|
662 | * @param pVM The cross context VM structure.
|
---|
663 | */
|
---|
664 | static void pgmR3DoneRomPages(PVM pVM)
|
---|
665 | {
|
---|
666 | NOREF(pVM);
|
---|
667 | }
|
---|
668 |
|
---|
669 |
|
---|
670 | /**
|
---|
671 | * Prepares the MMIO2 pages for a live save.
|
---|
672 | *
|
---|
673 | * @returns VBox status code.
|
---|
674 | * @param pVM The cross context VM structure.
|
---|
675 | */
|
---|
676 | static int pgmR3PrepMmio2Pages(PVM pVM)
|
---|
677 | {
|
---|
678 | /*
|
---|
679 | * Initialize the live save tracking in the MMIO2 ranges.
|
---|
680 | * ASSUME nothing changes here.
|
---|
681 | */
|
---|
682 | PGM_LOCK_VOID(pVM);
|
---|
683 | uint32_t const cMmio2Ranges = RT_MIN(pVM->pgm.s.cMmio2Ranges, RT_ELEMENTS(pVM->pgm.s.aMmio2Ranges));
|
---|
684 | for (uint32_t idx = 0; idx < cMmio2Ranges; idx++)
|
---|
685 | {
|
---|
686 | PPGMREGMMIO2RANGE const pRegMmio2 = &pVM->pgm.s.aMmio2Ranges[idx];
|
---|
687 | PPGMRAMRANGE const pRamRange = pVM->pgm.s.apMmio2RamRanges[idx];
|
---|
688 | uint32_t const cPages = pRamRange->cb >> GUEST_PAGE_SHIFT;
|
---|
689 | PGM_UNLOCK(pVM);
|
---|
690 |
|
---|
691 | PPGMLIVESAVEMMIO2PAGE paLSPages = (PPGMLIVESAVEMMIO2PAGE)MMR3HeapAllocZ(pVM, MM_TAG_PGM,
|
---|
692 | sizeof(PGMLIVESAVEMMIO2PAGE) * cPages);
|
---|
693 | if (!paLSPages)
|
---|
694 | return VERR_NO_MEMORY;
|
---|
695 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
696 | {
|
---|
697 | /* Initialize it as a dirty zero page. */
|
---|
698 | paLSPages[iPage].fDirty = true;
|
---|
699 | paLSPages[iPage].cUnchangedScans = 0;
|
---|
700 | paLSPages[iPage].fZero = true;
|
---|
701 | paLSPages[iPage].u32CrcH1 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
|
---|
702 | paLSPages[iPage].u32CrcH2 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
|
---|
703 | }
|
---|
704 |
|
---|
705 | PGM_LOCK_VOID(pVM);
|
---|
706 | pRegMmio2->paLSPages = paLSPages;
|
---|
707 | pVM->pgm.s.LiveSave.Mmio2.cDirtyPages += cPages;
|
---|
708 | }
|
---|
709 | PGM_UNLOCK(pVM);
|
---|
710 | return VINF_SUCCESS;
|
---|
711 | }
|
---|
712 |
|
---|
713 |
|
---|
714 | /**
|
---|
715 | * Assigns IDs to the MMIO2 ranges and saves them.
|
---|
716 | *
|
---|
717 | * @returns VBox status code.
|
---|
718 | * @param pVM The cross context VM structure.
|
---|
719 | * @param pSSM Saved state handle.
|
---|
720 | */
|
---|
721 | static int pgmR3SaveMmio2Ranges(PVM pVM, PSSMHANDLE pSSM)
|
---|
722 | {
|
---|
723 | PGM_LOCK_VOID(pVM);
|
---|
724 | uint32_t const cMmio2Ranges = RT_MIN(pVM->pgm.s.cMmio2Ranges, RT_ELEMENTS(pVM->pgm.s.aMmio2Ranges));
|
---|
725 | for (uint32_t idx = 0; idx < cMmio2Ranges; idx++)
|
---|
726 | {
|
---|
727 | PPGMREGMMIO2RANGE const pRegMmio2 = &pVM->pgm.s.aMmio2Ranges[idx];
|
---|
728 | PPGMRAMRANGE const pRamRange = pVM->pgm.s.apMmio2RamRanges[idx];
|
---|
729 | uint8_t const idSavedState = (uint8_t)(idx + 1);
|
---|
730 | pRegMmio2->idSavedState = idSavedState;
|
---|
731 | SSMR3PutU8(pSSM, idSavedState);
|
---|
732 | SSMR3PutStrZ(pSSM, pRegMmio2->pDevInsR3->pReg->szName);
|
---|
733 | SSMR3PutU32(pSSM, pRegMmio2->pDevInsR3->iInstance);
|
---|
734 | SSMR3PutU8(pSSM, pRegMmio2->iRegion);
|
---|
735 | SSMR3PutStrZ(pSSM, pRamRange->pszDesc);
|
---|
736 | int rc = SSMR3PutGCPhys(pSSM, pRamRange->cb);
|
---|
737 | if (RT_FAILURE(rc))
|
---|
738 | break;
|
---|
739 | }
|
---|
740 | PGM_UNLOCK(pVM);
|
---|
741 | return SSMR3PutU8(pSSM, UINT8_MAX);
|
---|
742 | }
|
---|
743 |
|
---|
744 |
|
---|
745 | /**
|
---|
746 | * Loads the MMIO2 range ID assignments.
|
---|
747 | *
|
---|
748 | * @returns VBox status code.
|
---|
749 | *
|
---|
750 | * @param pVM The cross context VM structure.
|
---|
751 | * @param pSSM The saved state handle.
|
---|
752 | */
|
---|
753 | static int pgmR3LoadMmio2Ranges(PVM pVM, PSSMHANDLE pSSM)
|
---|
754 | {
|
---|
755 | PGM_LOCK_ASSERT_OWNER(pVM);
|
---|
756 |
|
---|
757 | uint32_t const cMmio2Ranges = RT_MIN(pVM->pgm.s.cMmio2Ranges, RT_ELEMENTS(pVM->pgm.s.aMmio2Ranges));
|
---|
758 | for (uint32_t idx = 0; idx < cMmio2Ranges; idx++)
|
---|
759 | pVM->pgm.s.aMmio2Ranges[idx].idSavedState = UINT8_MAX;
|
---|
760 |
|
---|
761 | for (;;)
|
---|
762 | {
|
---|
763 | /*
|
---|
764 | * Read the data.
|
---|
765 | */
|
---|
766 | uint8_t id;
|
---|
767 | int rc = SSMR3GetU8(pSSM, &id);
|
---|
768 | if (RT_FAILURE(rc))
|
---|
769 | return rc;
|
---|
770 | if (id == UINT8_MAX)
|
---|
771 | {
|
---|
772 | /*
|
---|
773 | * End of MMIO2 ranges. Check that all are accounted for.
|
---|
774 | */
|
---|
775 | for (uint32_t idx = 0; idx < cMmio2Ranges; idx++)
|
---|
776 | AssertLogRelMsg(pVM->pgm.s.aMmio2Ranges[idx].idSavedState != UINT8_MAX,
|
---|
777 | ("%s\n", pVM->pgm.s.apMmio2RamRanges[idx]->pszDesc));
|
---|
778 | return VINF_SUCCESS; /* the end */
|
---|
779 | }
|
---|
780 | AssertLogRelReturn(id != 0, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
781 |
|
---|
782 | char szDevName[RT_SIZEOFMEMB(PDMDEVREG, szName)];
|
---|
783 | rc = SSMR3GetStrZ(pSSM, szDevName, sizeof(szDevName));
|
---|
784 | AssertLogRelRCReturn(rc, rc);
|
---|
785 |
|
---|
786 | uint32_t uInstance;
|
---|
787 | SSMR3GetU32(pSSM, &uInstance);
|
---|
788 | uint8_t iRegion;
|
---|
789 | SSMR3GetU8(pSSM, &iRegion);
|
---|
790 |
|
---|
791 | char szDesc[64];
|
---|
792 | rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
|
---|
793 | AssertLogRelRCReturn(rc, rc);
|
---|
794 |
|
---|
795 | RTGCPHYS cb;
|
---|
796 | rc = SSMR3GetGCPhys(pSSM, &cb);
|
---|
797 | AssertLogRelRCReturn(rc, rc);
|
---|
798 | AssertLogRelMsgReturn(!(cb & GUEST_PAGE_OFFSET_MASK), ("cb=%RGp %s\n", cb, szDesc), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
799 |
|
---|
800 | /*
|
---|
801 | * Locate a matching MMIO2 range.
|
---|
802 | */
|
---|
803 | uint32_t idx;
|
---|
804 | for (idx = 0; idx < cMmio2Ranges; idx++)
|
---|
805 | {
|
---|
806 | PPGMREGMMIO2RANGE const pRegMmio2 = &pVM->pgm.s.aMmio2Ranges[idx];
|
---|
807 | if ( pRegMmio2->idSavedState == UINT8_MAX
|
---|
808 | && pRegMmio2->iRegion == iRegion
|
---|
809 | && pRegMmio2->pDevInsR3->iInstance == uInstance
|
---|
810 | && !strcmp(pRegMmio2->pDevInsR3->pReg->szName, szDevName))
|
---|
811 | {
|
---|
812 | pRegMmio2->idSavedState = id;
|
---|
813 | break;
|
---|
814 | }
|
---|
815 | }
|
---|
816 | if (idx >= cMmio2Ranges)
|
---|
817 | return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to locate a MMIO2 range called '%s' owned by %s/%u, region %d"),
|
---|
818 | szDesc, szDevName, uInstance, iRegion);
|
---|
819 |
|
---|
820 | /*
|
---|
821 | * Validate the configuration, the size of the MMIO2 region should be
|
---|
822 | * the same.
|
---|
823 | */
|
---|
824 | PPGMRAMRANGE const pRamRange = pVM->pgm.s.apMmio2RamRanges[idx];
|
---|
825 | if (cb != pRamRange->cb)
|
---|
826 | {
|
---|
827 | LogRel(("PGM: MMIO2 region \"%s\" size mismatch: saved=%RGp config=%RGp\n", pRamRange->pszDesc, cb, pRamRange->cb));
|
---|
828 | if (cb > pRamRange->cb) /* bad idea? */
|
---|
829 | return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("MMIO2 region \"%s\" size mismatch: saved=%RGp config=%RGp"),
|
---|
830 | pRamRange->pszDesc, cb, pRamRange->cb);
|
---|
831 | }
|
---|
832 | } /* forever */
|
---|
833 | }
|
---|
834 |
|
---|
835 |
|
---|
836 | /**
|
---|
837 | * Scans one MMIO2 page.
|
---|
838 | *
|
---|
839 | * @returns True if changed, false if unchanged.
|
---|
840 | *
|
---|
841 | * @param pVM The cross context VM structure.
|
---|
842 | * @param pbPage The page bits.
|
---|
843 | * @param pLSPage The live save tracking structure for the page.
|
---|
844 | *
|
---|
845 | */
|
---|
846 | DECLINLINE(bool) pgmR3ScanMmio2Page(PVM pVM, uint8_t const *pbPage, PPGMLIVESAVEMMIO2PAGE pLSPage)
|
---|
847 | {
|
---|
848 | /*
|
---|
849 | * Special handling of zero pages.
|
---|
850 | */
|
---|
851 | bool const fZero = pLSPage->fZero;
|
---|
852 | if (fZero)
|
---|
853 | {
|
---|
854 | if (ASMMemIsZero(pbPage, GUEST_PAGE_SIZE))
|
---|
855 | {
|
---|
856 | /* Not modified. */
|
---|
857 | if (pLSPage->fDirty)
|
---|
858 | pLSPage->cUnchangedScans++;
|
---|
859 | return false;
|
---|
860 | }
|
---|
861 |
|
---|
862 | pLSPage->fZero = false;
|
---|
863 | pLSPage->u32CrcH1 = RTCrc32(pbPage, GUEST_PAGE_SIZE / 2);
|
---|
864 | }
|
---|
865 | else
|
---|
866 | {
|
---|
867 | /*
|
---|
868 | * CRC the first half, if it doesn't match the page is dirty and
|
---|
869 | * we won't check the 2nd half (we'll do that next time).
|
---|
870 | */
|
---|
871 | uint32_t u32CrcH1 = RTCrc32(pbPage, GUEST_PAGE_SIZE / 2);
|
---|
872 | if (u32CrcH1 == pLSPage->u32CrcH1)
|
---|
873 | {
|
---|
874 | uint32_t u32CrcH2 = RTCrc32(pbPage + GUEST_PAGE_SIZE / 2, GUEST_PAGE_SIZE / 2);
|
---|
875 | if (u32CrcH2 == pLSPage->u32CrcH2)
|
---|
876 | {
|
---|
877 | /* Probably not modified. */
|
---|
878 | if (pLSPage->fDirty)
|
---|
879 | pLSPage->cUnchangedScans++;
|
---|
880 | return false;
|
---|
881 | }
|
---|
882 |
|
---|
883 | pLSPage->u32CrcH2 = u32CrcH2;
|
---|
884 | }
|
---|
885 | else
|
---|
886 | {
|
---|
887 | pLSPage->u32CrcH1 = u32CrcH1;
|
---|
888 | if ( u32CrcH1 == PGM_STATE_CRC32_ZERO_HALF_PAGE
|
---|
889 | && ASMMemIsZero(pbPage, GUEST_PAGE_SIZE))
|
---|
890 | {
|
---|
891 | pLSPage->u32CrcH2 = PGM_STATE_CRC32_ZERO_HALF_PAGE;
|
---|
892 | pLSPage->fZero = true;
|
---|
893 | }
|
---|
894 | }
|
---|
895 | }
|
---|
896 |
|
---|
897 | /* dirty page path */
|
---|
898 | pLSPage->cUnchangedScans = 0;
|
---|
899 | if (!pLSPage->fDirty)
|
---|
900 | {
|
---|
901 | pLSPage->fDirty = true;
|
---|
902 | pVM->pgm.s.LiveSave.Mmio2.cReadyPages--;
|
---|
903 | pVM->pgm.s.LiveSave.Mmio2.cDirtyPages++;
|
---|
904 | if (fZero)
|
---|
905 | pVM->pgm.s.LiveSave.Mmio2.cZeroPages--;
|
---|
906 | }
|
---|
907 | return true;
|
---|
908 | }
|
---|
909 |
|
---|
910 |
|
---|
911 | /**
|
---|
912 | * Scan for MMIO2 page modifications.
|
---|
913 | *
|
---|
914 | * @param pVM The cross context VM structure.
|
---|
915 | * @param uPass The pass number.
|
---|
916 | */
|
---|
917 | static void pgmR3ScanMmio2Pages(PVM pVM, uint32_t uPass)
|
---|
918 | {
|
---|
919 | /*
|
---|
920 | * Since this is a bit expensive we lower the scan rate after a little while.
|
---|
921 | */
|
---|
922 | if ( ( (uPass & 3) != 0
|
---|
923 | && uPass > 10)
|
---|
924 | || uPass == SSM_PASS_FINAL)
|
---|
925 | return;
|
---|
926 |
|
---|
927 | PGM_LOCK_VOID(pVM); /* paranoia */
|
---|
928 | uint32_t const cMmio2Ranges = RT_MIN(pVM->pgm.s.cMmio2Ranges, RT_ELEMENTS(pVM->pgm.s.aMmio2Ranges));
|
---|
929 | for (uint32_t idx = 0; idx < cMmio2Ranges; idx++)
|
---|
930 | {
|
---|
931 | PPGMREGMMIO2RANGE const pRegMmio2 = &pVM->pgm.s.aMmio2Ranges[idx];
|
---|
932 | PPGMLIVESAVEMMIO2PAGE paLSPages = pRegMmio2->paLSPages;
|
---|
933 | uint32_t cPages = pVM->pgm.s.apMmio2RamRanges[idx]->cb >> GUEST_PAGE_SHIFT;
|
---|
934 | PGM_UNLOCK(pVM);
|
---|
935 |
|
---|
936 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
937 | {
|
---|
938 | uint8_t const *pbPage = &pRegMmio2->pbR3[iPage * GUEST_PAGE_SIZE];
|
---|
939 | pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]);
|
---|
940 | }
|
---|
941 |
|
---|
942 | PGM_LOCK_VOID(pVM);
|
---|
943 | }
|
---|
944 | PGM_UNLOCK(pVM);
|
---|
945 |
|
---|
946 | }
|
---|
947 |
|
---|
948 |
|
---|
949 | /**
|
---|
950 | * Save quiescent MMIO2 pages.
|
---|
951 | *
|
---|
952 | * @returns VBox status code.
|
---|
953 | * @param pVM The cross context VM structure.
|
---|
954 | * @param pSSM The SSM handle.
|
---|
955 | * @param fLiveSave Whether it's a live save or not.
|
---|
956 | * @param uPass The pass number.
|
---|
957 | */
|
---|
958 | static int pgmR3SaveMmio2Pages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, uint32_t uPass)
|
---|
959 | {
|
---|
960 | /** @todo implement live saving of MMIO2 pages. (Need some way of telling the
|
---|
961 | * device that we wish to know about changes.) */
|
---|
962 |
|
---|
963 | int rc = VINF_SUCCESS;
|
---|
964 | if (uPass == SSM_PASS_FINAL)
|
---|
965 | {
|
---|
966 | /*
|
---|
967 | * The mop up round.
|
---|
968 | */
|
---|
969 | PGM_LOCK_VOID(pVM);
|
---|
970 | uint32_t const cMmio2Ranges = RT_MIN(pVM->pgm.s.cMmio2Ranges, RT_ELEMENTS(pVM->pgm.s.aMmio2Ranges));
|
---|
971 | for (uint32_t idx = 0; idx < cMmio2Ranges && RT_SUCCESS(rc); idx++)
|
---|
972 | {
|
---|
973 | PPGMREGMMIO2RANGE const pRegMmio2 = &pVM->pgm.s.aMmio2Ranges[idx];
|
---|
974 | PPGMRAMRANGE const pRamRange = pVM->pgm.s.apMmio2RamRanges[idx];
|
---|
975 | PPGMLIVESAVEMMIO2PAGE const paLSPages = pRegMmio2->paLSPages;
|
---|
976 | uint32_t const cPages = pRamRange->cb >> GUEST_PAGE_SHIFT;
|
---|
977 | uint8_t const *pbPage = pRamRange->pbR3;
|
---|
978 | uint32_t iPageLast = cPages;
|
---|
979 | for (uint32_t iPage = 0; iPage < cPages; iPage++, pbPage += GUEST_PAGE_SIZE)
|
---|
980 | {
|
---|
981 | uint8_t u8Type;
|
---|
982 | if (!fLiveSave)
|
---|
983 | u8Type = ASMMemIsZero(pbPage, GUEST_PAGE_SIZE) ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
|
---|
984 | else
|
---|
985 | {
|
---|
986 | /* Try figure if it's a clean page, compare the SHA-1 to be really sure. */
|
---|
987 | if ( !paLSPages[iPage].fDirty
|
---|
988 | && !pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]))
|
---|
989 | {
|
---|
990 | if (paLSPages[iPage].fZero)
|
---|
991 | continue;
|
---|
992 |
|
---|
993 | uint8_t abSha1Hash[RTSHA1_HASH_SIZE];
|
---|
994 | RTSha1(pbPage, GUEST_PAGE_SIZE, abSha1Hash);
|
---|
995 | if (!memcmp(abSha1Hash, paLSPages[iPage].abSha1Saved, sizeof(abSha1Hash)))
|
---|
996 | continue;
|
---|
997 | }
|
---|
998 | u8Type = paLSPages[iPage].fZero ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
|
---|
999 | pVM->pgm.s.LiveSave.cSavedPages++;
|
---|
1000 | }
|
---|
1001 |
|
---|
1002 | if (iPage != 0 && iPage == iPageLast + 1)
|
---|
1003 | rc = SSMR3PutU8(pSSM, u8Type);
|
---|
1004 | else
|
---|
1005 | {
|
---|
1006 | SSMR3PutU8(pSSM, u8Type | PGM_STATE_REC_FLAG_ADDR);
|
---|
1007 | SSMR3PutU8(pSSM, pRegMmio2->idSavedState);
|
---|
1008 | rc = SSMR3PutU32(pSSM, iPage);
|
---|
1009 | }
|
---|
1010 | if (u8Type == PGM_STATE_REC_MMIO2_RAW)
|
---|
1011 | rc = SSMR3PutMem(pSSM, pbPage, GUEST_PAGE_SIZE);
|
---|
1012 | if (RT_FAILURE(rc))
|
---|
1013 | break;
|
---|
1014 | iPageLast = iPage;
|
---|
1015 | }
|
---|
1016 | }
|
---|
1017 | PGM_UNLOCK(pVM);
|
---|
1018 | }
|
---|
1019 | /*
|
---|
1020 | * Reduce the rate after a little while since the current MMIO2 approach is
|
---|
1021 | * a bit expensive.
|
---|
1022 | * We position it two passes after the scan pass to avoid saving busy pages.
|
---|
1023 | */
|
---|
1024 | else if ( uPass <= 10
|
---|
1025 | || (uPass & 3) == 2)
|
---|
1026 | {
|
---|
1027 | PGM_LOCK_VOID(pVM);
|
---|
1028 | uint32_t const cMmio2Ranges = RT_MIN(pVM->pgm.s.cMmio2Ranges, RT_ELEMENTS(pVM->pgm.s.aMmio2Ranges));
|
---|
1029 | for (uint32_t idx = 0; idx < cMmio2Ranges && RT_SUCCESS(rc); idx++)
|
---|
1030 | {
|
---|
1031 | PPGMREGMMIO2RANGE const pRegMmio2 = &pVM->pgm.s.aMmio2Ranges[idx];
|
---|
1032 | PPGMRAMRANGE const pRamRange = pVM->pgm.s.apMmio2RamRanges[idx];
|
---|
1033 | PPGMLIVESAVEMMIO2PAGE const paLSPages = pRegMmio2->paLSPages;
|
---|
1034 | uint32_t const cPages = pRamRange->cb >> GUEST_PAGE_SHIFT;
|
---|
1035 | uint8_t const *pbPage = pRamRange->pbR3;
|
---|
1036 | uint32_t iPageLast = cPages;
|
---|
1037 | PGM_UNLOCK(pVM);
|
---|
1038 |
|
---|
1039 | for (uint32_t iPage = 0; iPage < cPages; iPage++, pbPage += GUEST_PAGE_SIZE)
|
---|
1040 | {
|
---|
1041 | /* Skip clean pages and pages which hasn't quiesced. */
|
---|
1042 | if (!paLSPages[iPage].fDirty)
|
---|
1043 | continue;
|
---|
1044 | if (paLSPages[iPage].cUnchangedScans < 3)
|
---|
1045 | continue;
|
---|
1046 | if (pgmR3ScanMmio2Page(pVM, pbPage, &paLSPages[iPage]))
|
---|
1047 | continue;
|
---|
1048 |
|
---|
1049 | /* Save it. */
|
---|
1050 | bool const fZero = paLSPages[iPage].fZero;
|
---|
1051 | uint8_t abPage[GUEST_PAGE_SIZE];
|
---|
1052 | if (!fZero)
|
---|
1053 | {
|
---|
1054 | memcpy(abPage, pbPage, GUEST_PAGE_SIZE);
|
---|
1055 | RTSha1(abPage, GUEST_PAGE_SIZE, paLSPages[iPage].abSha1Saved);
|
---|
1056 | }
|
---|
1057 |
|
---|
1058 | uint8_t u8Type = paLSPages[iPage].fZero ? PGM_STATE_REC_MMIO2_ZERO : PGM_STATE_REC_MMIO2_RAW;
|
---|
1059 | if (iPage != 0 && iPage == iPageLast + 1)
|
---|
1060 | rc = SSMR3PutU8(pSSM, u8Type);
|
---|
1061 | else
|
---|
1062 | {
|
---|
1063 | SSMR3PutU8(pSSM, u8Type | PGM_STATE_REC_FLAG_ADDR);
|
---|
1064 | SSMR3PutU8(pSSM, pRegMmio2->idSavedState);
|
---|
1065 | rc = SSMR3PutU32(pSSM, iPage);
|
---|
1066 | }
|
---|
1067 | if (u8Type == PGM_STATE_REC_MMIO2_RAW)
|
---|
1068 | rc = SSMR3PutMem(pSSM, abPage, GUEST_PAGE_SIZE);
|
---|
1069 | if (RT_FAILURE(rc))
|
---|
1070 | break;
|
---|
1071 |
|
---|
1072 | /* Housekeeping. */
|
---|
1073 | paLSPages[iPage].fDirty = false;
|
---|
1074 | pVM->pgm.s.LiveSave.Mmio2.cDirtyPages--;
|
---|
1075 | pVM->pgm.s.LiveSave.Mmio2.cReadyPages++;
|
---|
1076 | if (u8Type == PGM_STATE_REC_MMIO2_ZERO)
|
---|
1077 | pVM->pgm.s.LiveSave.Mmio2.cZeroPages++;
|
---|
1078 | pVM->pgm.s.LiveSave.cSavedPages++;
|
---|
1079 | iPageLast = iPage;
|
---|
1080 | }
|
---|
1081 |
|
---|
1082 | PGM_LOCK_VOID(pVM);
|
---|
1083 | }
|
---|
1084 | PGM_UNLOCK(pVM);
|
---|
1085 | }
|
---|
1086 |
|
---|
1087 | return rc;
|
---|
1088 | }
|
---|
1089 |
|
---|
1090 |
|
---|
1091 | /**
|
---|
1092 | * Cleans up MMIO2 pages after a live save.
|
---|
1093 | *
|
---|
1094 | * @param pVM The cross context VM structure.
|
---|
1095 | */
|
---|
1096 | static void pgmR3DoneMmio2Pages(PVM pVM)
|
---|
1097 | {
|
---|
1098 | /*
|
---|
1099 | * Free the tracking structures for the MMIO2 pages.
|
---|
1100 | * We do the freeing outside the lock in case the VM is running.
|
---|
1101 | */
|
---|
1102 | PGM_LOCK_VOID(pVM);
|
---|
1103 | uint32_t const cMmio2Ranges = RT_MIN(pVM->pgm.s.cMmio2Ranges, RT_ELEMENTS(pVM->pgm.s.aMmio2Ranges));
|
---|
1104 | for (uint32_t idx = 0; idx < cMmio2Ranges; idx++)
|
---|
1105 | {
|
---|
1106 | PPGMREGMMIO2RANGE const pRegMmio2 = &pVM->pgm.s.aMmio2Ranges[idx];
|
---|
1107 | void *pvMmio2ToFree = pRegMmio2->paLSPages;
|
---|
1108 | if (pvMmio2ToFree)
|
---|
1109 | {
|
---|
1110 | pRegMmio2->paLSPages = NULL;
|
---|
1111 | PGM_UNLOCK(pVM);
|
---|
1112 | MMR3HeapFree(pvMmio2ToFree);
|
---|
1113 | PGM_LOCK_VOID(pVM);
|
---|
1114 | }
|
---|
1115 | }
|
---|
1116 | PGM_UNLOCK(pVM);
|
---|
1117 | }
|
---|
1118 |
|
---|
1119 |
|
---|
1120 | /**
|
---|
1121 | * Prepares the RAM pages for a live save.
|
---|
1122 | *
|
---|
1123 | * @returns VBox status code.
|
---|
1124 | * @param pVM The cross context VM structure.
|
---|
1125 | */
|
---|
1126 | static int pgmR3PrepRamPages(PVM pVM)
|
---|
1127 | {
|
---|
1128 |
|
---|
1129 | /*
|
---|
1130 | * Try allocating tracking structures for the ram ranges.
|
---|
1131 | *
|
---|
1132 | * To avoid lock contention, we leave the lock every time we're allocating
|
---|
1133 | * a new array. This means we'll have to ditch the allocation and start
|
---|
1134 | * all over again if the RAM range list changes in-between.
|
---|
1135 | *
|
---|
1136 | * Note! pgmR3SaveDone will always be called and it is therefore responsible
|
---|
1137 | * for cleaning up.
|
---|
1138 | */
|
---|
1139 | PGM_LOCK_VOID(pVM);
|
---|
1140 | uint32_t idRamRange;
|
---|
1141 | do
|
---|
1142 | {
|
---|
1143 | uint32_t const idRamRangeMax = RT_MIN(pVM->pgm.s.idRamRangeMax, RT_ELEMENTS(pVM->pgm.s.apRamRanges) - 1U);
|
---|
1144 | for (idRamRange = 0; idRamRange <= idRamRangeMax; idRamRange++)
|
---|
1145 | {
|
---|
1146 | PPGMRAMRANGE const pCur = pVM->pgm.s.apRamRanges[idRamRange];
|
---|
1147 | Assert(pCur || idRamRange == 0);
|
---|
1148 | if (!pCur) continue;
|
---|
1149 | Assert(pCur->idRange == idRamRange);
|
---|
1150 |
|
---|
1151 | if ( !pCur->paLSPages
|
---|
1152 | && !PGM_RAM_RANGE_IS_AD_HOC(pCur))
|
---|
1153 | {
|
---|
1154 | uint32_t const idRamRangesGen = pVM->pgm.s.RamRangeUnion.idGeneration;
|
---|
1155 | uint32_t const cPages = pCur->cb >> GUEST_PAGE_SHIFT;
|
---|
1156 | PGM_UNLOCK(pVM);
|
---|
1157 | PPGMLIVESAVERAMPAGE paLSPages = (PPGMLIVESAVERAMPAGE)MMR3HeapAllocZ(pVM, MM_TAG_PGM, cPages * sizeof(PGMLIVESAVERAMPAGE));
|
---|
1158 | if (!paLSPages)
|
---|
1159 | return VERR_NO_MEMORY;
|
---|
1160 | PGM_LOCK_VOID(pVM);
|
---|
1161 | if (pVM->pgm.s.RamRangeUnion.idGeneration != idRamRangesGen)
|
---|
1162 | {
|
---|
1163 | PGM_UNLOCK(pVM);
|
---|
1164 | MMR3HeapFree(paLSPages);
|
---|
1165 | PGM_LOCK_VOID(pVM);
|
---|
1166 | break; /* try again */
|
---|
1167 | }
|
---|
1168 | pCur->paLSPages = paLSPages;
|
---|
1169 |
|
---|
1170 | /*
|
---|
1171 | * Initialize the array.
|
---|
1172 | */
|
---|
1173 | uint32_t iPage = cPages;
|
---|
1174 | while (iPage-- > 0)
|
---|
1175 | {
|
---|
1176 | /** @todo yield critsect! (after moving this away from EMT0) */
|
---|
1177 | PCPGMPAGE pPage = &pCur->aPages[iPage];
|
---|
1178 | paLSPages[iPage].cDirtied = 0;
|
---|
1179 | paLSPages[iPage].fDirty = 1; /* everything is dirty at this time */
|
---|
1180 | paLSPages[iPage].fWriteMonitored = 0;
|
---|
1181 | paLSPages[iPage].fWriteMonitoredJustNow = 0;
|
---|
1182 | paLSPages[iPage].u2Reserved = 0;
|
---|
1183 | switch (PGM_PAGE_GET_TYPE(pPage))
|
---|
1184 | {
|
---|
1185 | case PGMPAGETYPE_RAM:
|
---|
1186 | if ( PGM_PAGE_IS_ZERO(pPage)
|
---|
1187 | || PGM_PAGE_IS_BALLOONED(pPage))
|
---|
1188 | {
|
---|
1189 | paLSPages[iPage].fZero = 1;
|
---|
1190 | paLSPages[iPage].fShared = 0;
|
---|
1191 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1192 | paLSPages[iPage].u32Crc = PGM_STATE_CRC32_ZERO_PAGE;
|
---|
1193 | #endif
|
---|
1194 | }
|
---|
1195 | else if (PGM_PAGE_IS_SHARED(pPage))
|
---|
1196 | {
|
---|
1197 | paLSPages[iPage].fZero = 0;
|
---|
1198 | paLSPages[iPage].fShared = 1;
|
---|
1199 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1200 | paLSPages[iPage].u32Crc = UINT32_MAX;
|
---|
1201 | #endif
|
---|
1202 | }
|
---|
1203 | else
|
---|
1204 | {
|
---|
1205 | paLSPages[iPage].fZero = 0;
|
---|
1206 | paLSPages[iPage].fShared = 0;
|
---|
1207 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1208 | paLSPages[iPage].u32Crc = UINT32_MAX;
|
---|
1209 | #endif
|
---|
1210 | }
|
---|
1211 | paLSPages[iPage].fIgnore = 0;
|
---|
1212 | pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
|
---|
1213 | break;
|
---|
1214 |
|
---|
1215 | case PGMPAGETYPE_ROM_SHADOW:
|
---|
1216 | case PGMPAGETYPE_ROM:
|
---|
1217 | {
|
---|
1218 | paLSPages[iPage].fZero = 0;
|
---|
1219 | paLSPages[iPage].fShared = 0;
|
---|
1220 | paLSPages[iPage].fDirty = 0;
|
---|
1221 | paLSPages[iPage].fIgnore = 1;
|
---|
1222 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1223 | paLSPages[iPage].u32Crc = UINT32_MAX;
|
---|
1224 | #endif
|
---|
1225 | pVM->pgm.s.LiveSave.cIgnoredPages++;
|
---|
1226 | break;
|
---|
1227 | }
|
---|
1228 |
|
---|
1229 | default:
|
---|
1230 | AssertMsgFailed(("%R[pgmpage]", pPage));
|
---|
1231 | RT_FALL_THRU();
|
---|
1232 | case PGMPAGETYPE_MMIO2:
|
---|
1233 | case PGMPAGETYPE_MMIO2_ALIAS_MMIO:
|
---|
1234 | paLSPages[iPage].fZero = 0;
|
---|
1235 | paLSPages[iPage].fShared = 0;
|
---|
1236 | paLSPages[iPage].fDirty = 0;
|
---|
1237 | paLSPages[iPage].fIgnore = 1;
|
---|
1238 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1239 | paLSPages[iPage].u32Crc = UINT32_MAX;
|
---|
1240 | #endif
|
---|
1241 | pVM->pgm.s.LiveSave.cIgnoredPages++;
|
---|
1242 | break;
|
---|
1243 |
|
---|
1244 | case PGMPAGETYPE_MMIO:
|
---|
1245 | case PGMPAGETYPE_SPECIAL_ALIAS_MMIO:
|
---|
1246 | paLSPages[iPage].fZero = 0;
|
---|
1247 | paLSPages[iPage].fShared = 0;
|
---|
1248 | paLSPages[iPage].fDirty = 0;
|
---|
1249 | paLSPages[iPage].fIgnore = 1;
|
---|
1250 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1251 | paLSPages[iPage].u32Crc = UINT32_MAX;
|
---|
1252 | #endif
|
---|
1253 | pVM->pgm.s.LiveSave.cIgnoredPages++;
|
---|
1254 | break;
|
---|
1255 | }
|
---|
1256 | }
|
---|
1257 | }
|
---|
1258 | }
|
---|
1259 | } while (idRamRange <= RT_MIN(pVM->pgm.s.idRamRangeMax, RT_ELEMENTS(pVM->pgm.s.apRamRanges) - 1U));
|
---|
1260 | PGM_UNLOCK(pVM);
|
---|
1261 |
|
---|
1262 | return VINF_SUCCESS;
|
---|
1263 | }
|
---|
1264 |
|
---|
1265 |
|
---|
1266 | /**
|
---|
1267 | * Saves the RAM configuration.
|
---|
1268 | *
|
---|
1269 | * @returns VBox status code.
|
---|
1270 | * @param pVM The cross context VM structure.
|
---|
1271 | * @param pSSM The saved state handle.
|
---|
1272 | */
|
---|
1273 | static int pgmR3SaveRamConfig(PVM pVM, PSSMHANDLE pSSM)
|
---|
1274 | {
|
---|
1275 | uint32_t cbRamHole = 0;
|
---|
1276 | int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHole, MM_RAM_HOLE_SIZE_DEFAULT);
|
---|
1277 | AssertRCReturn(rc, rc);
|
---|
1278 |
|
---|
1279 | uint64_t cbRam = 0;
|
---|
1280 | rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRam, 0);
|
---|
1281 | AssertRCReturn(rc, rc);
|
---|
1282 |
|
---|
1283 | SSMR3PutU32(pSSM, cbRamHole);
|
---|
1284 | return SSMR3PutU64(pSSM, cbRam);
|
---|
1285 | }
|
---|
1286 |
|
---|
1287 |
|
---|
1288 | /**
|
---|
1289 | * Loads and verifies the RAM configuration.
|
---|
1290 | *
|
---|
1291 | * @returns VBox status code.
|
---|
1292 | * @param pVM The cross context VM structure.
|
---|
1293 | * @param pSSM The saved state handle.
|
---|
1294 | */
|
---|
1295 | static int pgmR3LoadRamConfig(PVM pVM, PSSMHANDLE pSSM)
|
---|
1296 | {
|
---|
1297 | uint32_t cbRamHoleCfg = 0;
|
---|
1298 | int rc = CFGMR3QueryU32Def(CFGMR3GetRoot(pVM), "RamHoleSize", &cbRamHoleCfg, MM_RAM_HOLE_SIZE_DEFAULT);
|
---|
1299 | AssertRCReturn(rc, rc);
|
---|
1300 |
|
---|
1301 | uint64_t cbRamCfg = 0;
|
---|
1302 | rc = CFGMR3QueryU64Def(CFGMR3GetRoot(pVM), "RamSize", &cbRamCfg, 0);
|
---|
1303 | AssertRCReturn(rc, rc);
|
---|
1304 |
|
---|
1305 | uint32_t cbRamHoleSaved;
|
---|
1306 | SSMR3GetU32(pSSM, &cbRamHoleSaved);
|
---|
1307 |
|
---|
1308 | uint64_t cbRamSaved;
|
---|
1309 | rc = SSMR3GetU64(pSSM, &cbRamSaved);
|
---|
1310 | AssertRCReturn(rc, rc);
|
---|
1311 |
|
---|
1312 | if ( cbRamHoleCfg != cbRamHoleSaved
|
---|
1313 | || cbRamCfg != cbRamSaved)
|
---|
1314 | return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Ram config mismatch: saved=%RX64/%RX32 config=%RX64/%RX32 (RAM/Hole)"),
|
---|
1315 | cbRamSaved, cbRamHoleSaved, cbRamCfg, cbRamHoleCfg);
|
---|
1316 | return VINF_SUCCESS;
|
---|
1317 | }
|
---|
1318 |
|
---|
1319 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1320 |
|
---|
1321 | /**
|
---|
1322 | * Calculates the CRC-32 for a RAM page and updates the live save page tracking
|
---|
1323 | * info with it.
|
---|
1324 | *
|
---|
1325 | * @param pVM The cross context VM structure.
|
---|
1326 | * @param pCur The current RAM range.
|
---|
1327 | * @param paLSPages The current array of live save page tracking
|
---|
1328 | * structures.
|
---|
1329 | * @param iPage The page index.
|
---|
1330 | */
|
---|
1331 | static void pgmR3StateCalcCrc32ForRamPage(PVM pVM, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage)
|
---|
1332 | {
|
---|
1333 | RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
|
---|
1334 | PGMPAGEMAPLOCK PgMpLck;
|
---|
1335 | void const *pvPage;
|
---|
1336 | int rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, &pCur->aPages[iPage], GCPhys, &pvPage, &PgMpLck);
|
---|
1337 | if (RT_SUCCESS(rc))
|
---|
1338 | {
|
---|
1339 | paLSPages[iPage].u32Crc = RTCrc32(pvPage, GUEST_PAGE_SIZE);
|
---|
1340 | pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
|
---|
1341 | }
|
---|
1342 | else
|
---|
1343 | paLSPages[iPage].u32Crc = UINT32_MAX; /* Invalid */
|
---|
1344 | }
|
---|
1345 |
|
---|
1346 |
|
---|
1347 | /**
|
---|
1348 | * Verifies the CRC-32 for a page given it's raw bits.
|
---|
1349 | *
|
---|
1350 | * @param pvPage The page bits.
|
---|
1351 | * @param pCur The current RAM range.
|
---|
1352 | * @param paLSPages The current array of live save page tracking
|
---|
1353 | * structures.
|
---|
1354 | * @param iPage The page index.
|
---|
1355 | */
|
---|
1356 | static void pgmR3StateVerifyCrc32ForPage(void const *pvPage, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage, const char *pszWhere)
|
---|
1357 | {
|
---|
1358 | if (paLSPages[iPage].u32Crc != UINT32_MAX)
|
---|
1359 | {
|
---|
1360 | uint32_t u32Crc = RTCrc32(pvPage, GUEST_PAGE_SIZE);
|
---|
1361 | Assert( ( !PGM_PAGE_IS_ZERO(&pCur->aPages[iPage])
|
---|
1362 | && !PGM_PAGE_IS_BALLOONED(&pCur->aPages[iPage]))
|
---|
1363 | || u32Crc == PGM_STATE_CRC32_ZERO_PAGE);
|
---|
1364 | AssertMsg(paLSPages[iPage].u32Crc == u32Crc,
|
---|
1365 | ("%08x != %08x for %RGp %R[pgmpage] %s\n", paLSPages[iPage].u32Crc, u32Crc,
|
---|
1366 | pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT), &pCur->aPages[iPage], pszWhere));
|
---|
1367 | }
|
---|
1368 | }
|
---|
1369 |
|
---|
1370 |
|
---|
1371 | /**
|
---|
1372 | * Verifies the CRC-32 for a RAM page.
|
---|
1373 | *
|
---|
1374 | * @param pVM The cross context VM structure.
|
---|
1375 | * @param pCur The current RAM range.
|
---|
1376 | * @param paLSPages The current array of live save page tracking
|
---|
1377 | * structures.
|
---|
1378 | * @param iPage The page index.
|
---|
1379 | */
|
---|
1380 | static void pgmR3StateVerifyCrc32ForRamPage(PVM pVM, PPGMRAMRANGE pCur, PPGMLIVESAVERAMPAGE paLSPages, uint32_t iPage, const char *pszWhere)
|
---|
1381 | {
|
---|
1382 | if (paLSPages[iPage].u32Crc != UINT32_MAX)
|
---|
1383 | {
|
---|
1384 | RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
|
---|
1385 | PGMPAGEMAPLOCK PgMpLck;
|
---|
1386 | void const *pvPage;
|
---|
1387 | int rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, &pCur->aPages[iPage], GCPhys, &pvPage, &PgMpLck);
|
---|
1388 | if (RT_SUCCESS(rc))
|
---|
1389 | {
|
---|
1390 | pgmR3StateVerifyCrc32ForPage(pvPage, pCur, paLSPages, iPage, pszWhere);
|
---|
1391 | pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
|
---|
1392 | }
|
---|
1393 | }
|
---|
1394 | }
|
---|
1395 |
|
---|
1396 | #endif /* PGMLIVESAVERAMPAGE_WITH_CRC32 */
|
---|
1397 |
|
---|
1398 | /**
|
---|
1399 | * Scan for RAM page modifications and reprotect them.
|
---|
1400 | *
|
---|
1401 | * @param pVM The cross context VM structure.
|
---|
1402 | * @param fFinalPass Whether this is the final pass or not.
|
---|
1403 | */
|
---|
1404 | static void pgmR3ScanRamPages(PVM pVM, bool fFinalPass)
|
---|
1405 | {
|
---|
1406 | /*
|
---|
1407 | * The RAM.
|
---|
1408 | */
|
---|
1409 | RTGCPHYS GCPhysCur = 0;
|
---|
1410 | uint32_t idxLookup;
|
---|
1411 | uint32_t cLookupEntries;
|
---|
1412 | PGM_LOCK_VOID(pVM);
|
---|
1413 | do
|
---|
1414 | {
|
---|
1415 | PGM::PGMRAMRANGEGENANDLOOKUPCOUNT const RamRangeUnion = pVM->pgm.s.RamRangeUnion;
|
---|
1416 | Assert(pVM->pgm.s.RamRangeUnion.cLookupEntries < RT_ELEMENTS(pVM->pgm.s.aRamRangeLookup));
|
---|
1417 | cLookupEntries = pVM->pgm.s.RamRangeUnion.cLookupEntries;
|
---|
1418 | for (idxLookup = 0; idxLookup < cLookupEntries; idxLookup++)
|
---|
1419 | {
|
---|
1420 | uint32_t const idRamRange = PGMRAMRANGELOOKUPENTRY_GET_ID(pVM->pgm.s.aRamRangeLookup[idxLookup]);
|
---|
1421 | AssertContinue(idRamRange < RT_ELEMENTS(pVM->pgm.s.apRamRanges));
|
---|
1422 | PPGMRAMRANGE const pCur = pVM->pgm.s.apRamRanges[idRamRange];
|
---|
1423 | AssertContinue(pCur);
|
---|
1424 | Assert(pCur->GCPhys == PGMRAMRANGELOOKUPENTRY_GET_FIRST(pVM->pgm.s.aRamRangeLookup[idxLookup]));
|
---|
1425 |
|
---|
1426 | if ( pCur->GCPhysLast > GCPhysCur
|
---|
1427 | && !PGM_RAM_RANGE_IS_AD_HOC(pCur))
|
---|
1428 | {
|
---|
1429 | PPGMLIVESAVERAMPAGE paLSPages = pCur->paLSPages;
|
---|
1430 | uint32_t cPages = pCur->cb >> GUEST_PAGE_SHIFT;
|
---|
1431 | uint32_t iPage = GCPhysCur <= pCur->GCPhys ? 0 : (GCPhysCur - pCur->GCPhys) >> GUEST_PAGE_SHIFT;
|
---|
1432 | GCPhysCur = 0;
|
---|
1433 | for (; iPage < cPages; iPage++)
|
---|
1434 | {
|
---|
1435 | /* Do yield first. */
|
---|
1436 | if ( !fFinalPass
|
---|
1437 | #ifndef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1438 | && (iPage & 0x7ff) == 0x100
|
---|
1439 | #endif
|
---|
1440 | && PDMR3CritSectYield(pVM, &pVM->pgm.s.CritSectX)
|
---|
1441 | && pVM->pgm.s.RamRangeUnion.u64Combined != RamRangeUnion.u64Combined)
|
---|
1442 | {
|
---|
1443 | GCPhysCur = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
|
---|
1444 | break; /* restart */
|
---|
1445 | }
|
---|
1446 |
|
---|
1447 | /* Skip already ignored pages. */
|
---|
1448 | if (paLSPages[iPage].fIgnore)
|
---|
1449 | continue;
|
---|
1450 |
|
---|
1451 | if (RT_LIKELY(PGM_PAGE_GET_TYPE(&pCur->aPages[iPage]) == PGMPAGETYPE_RAM))
|
---|
1452 | {
|
---|
1453 | /*
|
---|
1454 | * A RAM page.
|
---|
1455 | */
|
---|
1456 | switch (PGM_PAGE_GET_STATE(&pCur->aPages[iPage]))
|
---|
1457 | {
|
---|
1458 | case PGM_PAGE_STATE_ALLOCATED:
|
---|
1459 | /** @todo Optimize this: Don't always re-enable write
|
---|
1460 | * monitoring if the page is known to be very busy. */
|
---|
1461 | if (PGM_PAGE_IS_WRITTEN_TO(&pCur->aPages[iPage]))
|
---|
1462 | {
|
---|
1463 | AssertMsg(paLSPages[iPage].fWriteMonitored,
|
---|
1464 | ("%RGp %R[pgmpage]\n", pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT), &pCur->aPages[iPage]));
|
---|
1465 | PGM_PAGE_CLEAR_WRITTEN_TO(pVM, &pCur->aPages[iPage]);
|
---|
1466 | Assert(pVM->pgm.s.cWrittenToPages > 0);
|
---|
1467 | pVM->pgm.s.cWrittenToPages--;
|
---|
1468 | }
|
---|
1469 | else
|
---|
1470 | {
|
---|
1471 | AssertMsg(!paLSPages[iPage].fWriteMonitored,
|
---|
1472 | ("%RGp %R[pgmpage]\n", pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT), &pCur->aPages[iPage]));
|
---|
1473 | pVM->pgm.s.LiveSave.Ram.cMonitoredPages++;
|
---|
1474 | }
|
---|
1475 |
|
---|
1476 | if (!paLSPages[iPage].fDirty)
|
---|
1477 | {
|
---|
1478 | pVM->pgm.s.LiveSave.Ram.cReadyPages--;
|
---|
1479 | if (paLSPages[iPage].fZero)
|
---|
1480 | pVM->pgm.s.LiveSave.Ram.cZeroPages--;
|
---|
1481 | pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
|
---|
1482 | if (++paLSPages[iPage].cDirtied > PGMLIVSAVEPAGE_MAX_DIRTIED)
|
---|
1483 | paLSPages[iPage].cDirtied = PGMLIVSAVEPAGE_MAX_DIRTIED;
|
---|
1484 | }
|
---|
1485 |
|
---|
1486 | pgmPhysPageWriteMonitor(pVM, &pCur->aPages[iPage],
|
---|
1487 | pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT));
|
---|
1488 | paLSPages[iPage].fWriteMonitored = 1;
|
---|
1489 | paLSPages[iPage].fWriteMonitoredJustNow = 1;
|
---|
1490 | paLSPages[iPage].fDirty = 1;
|
---|
1491 | paLSPages[iPage].fZero = 0;
|
---|
1492 | paLSPages[iPage].fShared = 0;
|
---|
1493 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1494 | paLSPages[iPage].u32Crc = UINT32_MAX; /* invalid */
|
---|
1495 | #endif
|
---|
1496 | break;
|
---|
1497 |
|
---|
1498 | case PGM_PAGE_STATE_WRITE_MONITORED:
|
---|
1499 | Assert(paLSPages[iPage].fWriteMonitored);
|
---|
1500 | if (PGM_PAGE_GET_WRITE_LOCKS(&pCur->aPages[iPage]) == 0)
|
---|
1501 | {
|
---|
1502 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1503 | if (paLSPages[iPage].fWriteMonitoredJustNow)
|
---|
1504 | pgmR3StateCalcCrc32ForRamPage(pVM, pCur, paLSPages, iPage);
|
---|
1505 | else
|
---|
1506 | pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "scan");
|
---|
1507 | #endif
|
---|
1508 | paLSPages[iPage].fWriteMonitoredJustNow = 0;
|
---|
1509 | }
|
---|
1510 | else
|
---|
1511 | {
|
---|
1512 | paLSPages[iPage].fWriteMonitoredJustNow = 1;
|
---|
1513 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1514 | paLSPages[iPage].u32Crc = UINT32_MAX; /* invalid */
|
---|
1515 | #endif
|
---|
1516 | if (!paLSPages[iPage].fDirty)
|
---|
1517 | {
|
---|
1518 | pVM->pgm.s.LiveSave.Ram.cReadyPages--;
|
---|
1519 | pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
|
---|
1520 | if (++paLSPages[iPage].cDirtied > PGMLIVSAVEPAGE_MAX_DIRTIED)
|
---|
1521 | paLSPages[iPage].cDirtied = PGMLIVSAVEPAGE_MAX_DIRTIED;
|
---|
1522 | }
|
---|
1523 | }
|
---|
1524 | break;
|
---|
1525 |
|
---|
1526 | case PGM_PAGE_STATE_ZERO:
|
---|
1527 | case PGM_PAGE_STATE_BALLOONED:
|
---|
1528 | if (!paLSPages[iPage].fZero)
|
---|
1529 | {
|
---|
1530 | if (!paLSPages[iPage].fDirty)
|
---|
1531 | {
|
---|
1532 | paLSPages[iPage].fDirty = 1;
|
---|
1533 | pVM->pgm.s.LiveSave.Ram.cReadyPages--;
|
---|
1534 | pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
|
---|
1535 | }
|
---|
1536 | paLSPages[iPage].fZero = 1;
|
---|
1537 | paLSPages[iPage].fShared = 0;
|
---|
1538 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1539 | paLSPages[iPage].u32Crc = PGM_STATE_CRC32_ZERO_PAGE;
|
---|
1540 | #endif
|
---|
1541 | }
|
---|
1542 | break;
|
---|
1543 |
|
---|
1544 | case PGM_PAGE_STATE_SHARED:
|
---|
1545 | if (!paLSPages[iPage].fShared)
|
---|
1546 | {
|
---|
1547 | if (!paLSPages[iPage].fDirty)
|
---|
1548 | {
|
---|
1549 | paLSPages[iPage].fDirty = 1;
|
---|
1550 | pVM->pgm.s.LiveSave.Ram.cReadyPages--;
|
---|
1551 | if (paLSPages[iPage].fZero)
|
---|
1552 | pVM->pgm.s.LiveSave.Ram.cZeroPages--;
|
---|
1553 | pVM->pgm.s.LiveSave.Ram.cDirtyPages++;
|
---|
1554 | }
|
---|
1555 | paLSPages[iPage].fZero = 0;
|
---|
1556 | paLSPages[iPage].fShared = 1;
|
---|
1557 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1558 | pgmR3StateCalcCrc32ForRamPage(pVM, pCur, paLSPages, iPage);
|
---|
1559 | #endif
|
---|
1560 | }
|
---|
1561 | break;
|
---|
1562 | }
|
---|
1563 | }
|
---|
1564 | else
|
---|
1565 | {
|
---|
1566 | /*
|
---|
1567 | * All other types => Ignore the page.
|
---|
1568 | */
|
---|
1569 | Assert(!paLSPages[iPage].fIgnore); /* skipped before switch */
|
---|
1570 | paLSPages[iPage].fIgnore = 1;
|
---|
1571 | if (paLSPages[iPage].fWriteMonitored)
|
---|
1572 | {
|
---|
1573 | /** @todo this doesn't hold water when we start monitoring MMIO2 and ROM shadow
|
---|
1574 | * pages! */
|
---|
1575 | if (RT_UNLIKELY(PGM_PAGE_GET_STATE(&pCur->aPages[iPage]) == PGM_PAGE_STATE_WRITE_MONITORED))
|
---|
1576 | {
|
---|
1577 | AssertMsgFailed(("%R[pgmpage]", &pCur->aPages[iPage])); /* shouldn't happen. */
|
---|
1578 | PGM_PAGE_SET_STATE(pVM, &pCur->aPages[iPage], PGM_PAGE_STATE_ALLOCATED);
|
---|
1579 | Assert(pVM->pgm.s.cMonitoredPages > 0);
|
---|
1580 | pVM->pgm.s.cMonitoredPages--;
|
---|
1581 | }
|
---|
1582 | if (PGM_PAGE_IS_WRITTEN_TO(&pCur->aPages[iPage]))
|
---|
1583 | {
|
---|
1584 | PGM_PAGE_CLEAR_WRITTEN_TO(pVM, &pCur->aPages[iPage]);
|
---|
1585 | Assert(pVM->pgm.s.cWrittenToPages > 0);
|
---|
1586 | pVM->pgm.s.cWrittenToPages--;
|
---|
1587 | }
|
---|
1588 | pVM->pgm.s.LiveSave.Ram.cMonitoredPages--;
|
---|
1589 | }
|
---|
1590 |
|
---|
1591 | /** @todo the counting doesn't quite work out here. fix later? */
|
---|
1592 | if (paLSPages[iPage].fDirty)
|
---|
1593 | pVM->pgm.s.LiveSave.Ram.cDirtyPages--;
|
---|
1594 | else
|
---|
1595 | {
|
---|
1596 | pVM->pgm.s.LiveSave.Ram.cReadyPages--;
|
---|
1597 | if (paLSPages[iPage].fZero)
|
---|
1598 | pVM->pgm.s.LiveSave.Ram.cZeroPages--;
|
---|
1599 | }
|
---|
1600 | pVM->pgm.s.LiveSave.cIgnoredPages++;
|
---|
1601 | }
|
---|
1602 | } /* for each page in range */
|
---|
1603 |
|
---|
1604 | if (GCPhysCur != 0)
|
---|
1605 | break; /* Yield + ramrange change */
|
---|
1606 | GCPhysCur = pCur->GCPhysLast;
|
---|
1607 | }
|
---|
1608 | } /* for each range */
|
---|
1609 |
|
---|
1610 | /* We must use the starting lookup count here to determine whether we've
|
---|
1611 | been thru all or not, since using the current count could lead us to
|
---|
1612 | skip the final range if one was umapped while we yielded the lock. */
|
---|
1613 | } while (idxLookup < cLookupEntries);
|
---|
1614 | PGM_UNLOCK(pVM);
|
---|
1615 | }
|
---|
1616 |
|
---|
1617 |
|
---|
1618 | /**
|
---|
1619 | * Save quiescent RAM pages.
|
---|
1620 | *
|
---|
1621 | * @returns VBox status code.
|
---|
1622 | * @param pVM The cross context VM structure.
|
---|
1623 | * @param pSSM The SSM handle.
|
---|
1624 | * @param fLiveSave Whether it's a live save or not.
|
---|
1625 | * @param uPass The pass number.
|
---|
1626 | */
|
---|
1627 | static int pgmR3SaveRamPages(PVM pVM, PSSMHANDLE pSSM, bool fLiveSave, uint32_t uPass)
|
---|
1628 | {
|
---|
1629 | NOREF(fLiveSave);
|
---|
1630 |
|
---|
1631 | /*
|
---|
1632 | * The RAM.
|
---|
1633 | */
|
---|
1634 | RTGCPHYS GCPhysLast = NIL_RTGCPHYS;
|
---|
1635 | RTGCPHYS GCPhysCur = 0;
|
---|
1636 | uint32_t idxLookup;
|
---|
1637 | uint32_t cRamRangeLookupEntries;
|
---|
1638 |
|
---|
1639 | PGM_LOCK_VOID(pVM);
|
---|
1640 | do
|
---|
1641 | {
|
---|
1642 | uint32_t const idRamRangesGen = pVM->pgm.s.RamRangeUnion.idGeneration;
|
---|
1643 | cRamRangeLookupEntries = RT_MIN(pVM->pgm.s.RamRangeUnion.cLookupEntries, RT_ELEMENTS(pVM->pgm.s.aRamRangeLookup));
|
---|
1644 | for (idxLookup = 0; idxLookup < cRamRangeLookupEntries; idxLookup++)
|
---|
1645 | {
|
---|
1646 | uint32_t const idRamRange = PGMRAMRANGELOOKUPENTRY_GET_ID(pVM->pgm.s.aRamRangeLookup[idxLookup]);
|
---|
1647 | AssertContinue(idRamRange < RT_ELEMENTS(pVM->pgm.s.apRamRanges));
|
---|
1648 | PPGMRAMRANGE const pCur = pVM->pgm.s.apRamRanges[idRamRange];
|
---|
1649 | AssertContinue(pCur);
|
---|
1650 | Assert(pCur->GCPhys == PGMRAMRANGELOOKUPENTRY_GET_FIRST(pVM->pgm.s.aRamRangeLookup[idxLookup]));
|
---|
1651 |
|
---|
1652 | if ( pCur->GCPhysLast > GCPhysCur
|
---|
1653 | && !PGM_RAM_RANGE_IS_AD_HOC(pCur))
|
---|
1654 | {
|
---|
1655 | PPGMLIVESAVERAMPAGE paLSPages = pCur->paLSPages;
|
---|
1656 | uint32_t cPages = pCur->cb >> GUEST_PAGE_SHIFT;
|
---|
1657 | uint32_t iPage = GCPhysCur <= pCur->GCPhys ? 0 : (GCPhysCur - pCur->GCPhys) >> GUEST_PAGE_SHIFT;
|
---|
1658 | GCPhysCur = 0;
|
---|
1659 | for (; iPage < cPages; iPage++)
|
---|
1660 | {
|
---|
1661 | /* Do yield first. */
|
---|
1662 | if ( uPass != SSM_PASS_FINAL
|
---|
1663 | && (iPage & 0x7ff) == 0x100
|
---|
1664 | && PDMR3CritSectYield(pVM, &pVM->pgm.s.CritSectX)
|
---|
1665 | && pVM->pgm.s.RamRangeUnion.idGeneration != idRamRangesGen)
|
---|
1666 | {
|
---|
1667 | GCPhysCur = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
|
---|
1668 | break; /* restart */
|
---|
1669 | }
|
---|
1670 |
|
---|
1671 | PPGMPAGE pCurPage = &pCur->aPages[iPage];
|
---|
1672 |
|
---|
1673 | /*
|
---|
1674 | * Only save pages that haven't changed since last scan and are dirty.
|
---|
1675 | */
|
---|
1676 | if ( uPass != SSM_PASS_FINAL
|
---|
1677 | && paLSPages)
|
---|
1678 | {
|
---|
1679 | if (!paLSPages[iPage].fDirty)
|
---|
1680 | continue;
|
---|
1681 | if (paLSPages[iPage].fWriteMonitoredJustNow)
|
---|
1682 | continue;
|
---|
1683 | if (paLSPages[iPage].fIgnore)
|
---|
1684 | continue;
|
---|
1685 | if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM) /* in case of recent remappings */
|
---|
1686 | continue;
|
---|
1687 | if ( PGM_PAGE_GET_STATE(pCurPage)
|
---|
1688 | != ( paLSPages[iPage].fZero
|
---|
1689 | ? PGM_PAGE_STATE_ZERO
|
---|
1690 | : paLSPages[iPage].fShared
|
---|
1691 | ? PGM_PAGE_STATE_SHARED
|
---|
1692 | : PGM_PAGE_STATE_WRITE_MONITORED))
|
---|
1693 | continue;
|
---|
1694 | if (PGM_PAGE_GET_WRITE_LOCKS(&pCur->aPages[iPage]) > 0)
|
---|
1695 | continue;
|
---|
1696 | }
|
---|
1697 | else
|
---|
1698 | {
|
---|
1699 | if ( paLSPages
|
---|
1700 | && !paLSPages[iPage].fDirty
|
---|
1701 | && !paLSPages[iPage].fIgnore)
|
---|
1702 | {
|
---|
1703 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1704 | if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM)
|
---|
1705 | pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "save#1");
|
---|
1706 | #endif
|
---|
1707 | continue;
|
---|
1708 | }
|
---|
1709 | if (PGM_PAGE_GET_TYPE(pCurPage) != PGMPAGETYPE_RAM)
|
---|
1710 | continue;
|
---|
1711 | }
|
---|
1712 |
|
---|
1713 | /*
|
---|
1714 | * Do the saving outside the PGM critsect since SSM may block on I/O.
|
---|
1715 | */
|
---|
1716 | int rc;
|
---|
1717 | RTGCPHYS GCPhys = pCur->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
|
---|
1718 | bool fZero = PGM_PAGE_IS_ZERO(pCurPage);
|
---|
1719 | bool fBallooned = PGM_PAGE_IS_BALLOONED(pCurPage);
|
---|
1720 | bool fSkipped = false;
|
---|
1721 |
|
---|
1722 | if (!fZero && !fBallooned)
|
---|
1723 | {
|
---|
1724 | /*
|
---|
1725 | * Copy the page and then save it outside the lock (since any
|
---|
1726 | * SSM call may block).
|
---|
1727 | */
|
---|
1728 | uint8_t abPage[GUEST_PAGE_SIZE];
|
---|
1729 | PGMPAGEMAPLOCK PgMpLck;
|
---|
1730 | void const *pvPage;
|
---|
1731 | rc = pgmPhysGCPhys2CCPtrInternalReadOnly(pVM, pCurPage, GCPhys, &pvPage, &PgMpLck);
|
---|
1732 | if (RT_SUCCESS(rc))
|
---|
1733 | {
|
---|
1734 | memcpy(abPage, pvPage, GUEST_PAGE_SIZE);
|
---|
1735 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1736 | if (paLSPages)
|
---|
1737 | pgmR3StateVerifyCrc32ForPage(abPage, pCur, paLSPages, iPage, "save#3");
|
---|
1738 | #endif
|
---|
1739 | pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
|
---|
1740 | }
|
---|
1741 | PGM_UNLOCK(pVM);
|
---|
1742 | AssertLogRelMsgRCReturn(rc, ("rc=%Rrc GCPhys=%RGp\n", rc, GCPhys), rc);
|
---|
1743 |
|
---|
1744 | /* Try save some memory when restoring. */
|
---|
1745 | if (!ASMMemIsZero(pvPage, GUEST_PAGE_SIZE))
|
---|
1746 | {
|
---|
1747 | if (GCPhys == GCPhysLast + GUEST_PAGE_SIZE)
|
---|
1748 | SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW);
|
---|
1749 | else
|
---|
1750 | {
|
---|
1751 | SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_RAW | PGM_STATE_REC_FLAG_ADDR);
|
---|
1752 | SSMR3PutGCPhys(pSSM, GCPhys);
|
---|
1753 | }
|
---|
1754 | rc = SSMR3PutMem(pSSM, abPage, GUEST_PAGE_SIZE);
|
---|
1755 | }
|
---|
1756 | else
|
---|
1757 | {
|
---|
1758 | if (GCPhys == GCPhysLast + GUEST_PAGE_SIZE)
|
---|
1759 | rc = SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_ZERO);
|
---|
1760 | else
|
---|
1761 | {
|
---|
1762 | SSMR3PutU8(pSSM, PGM_STATE_REC_RAM_ZERO | PGM_STATE_REC_FLAG_ADDR);
|
---|
1763 | rc = SSMR3PutGCPhys(pSSM, GCPhys);
|
---|
1764 | }
|
---|
1765 | }
|
---|
1766 | }
|
---|
1767 | else
|
---|
1768 | {
|
---|
1769 | /*
|
---|
1770 | * Dirty zero or ballooned page.
|
---|
1771 | */
|
---|
1772 | #ifdef PGMLIVESAVERAMPAGE_WITH_CRC32
|
---|
1773 | if (paLSPages)
|
---|
1774 | pgmR3StateVerifyCrc32ForRamPage(pVM, pCur, paLSPages, iPage, "save#2");
|
---|
1775 | #endif
|
---|
1776 | PGM_UNLOCK(pVM);
|
---|
1777 |
|
---|
1778 | uint8_t u8RecType = fBallooned ? PGM_STATE_REC_RAM_BALLOONED : PGM_STATE_REC_RAM_ZERO;
|
---|
1779 | if (GCPhys == GCPhysLast + GUEST_PAGE_SIZE)
|
---|
1780 | rc = SSMR3PutU8(pSSM, u8RecType);
|
---|
1781 | else
|
---|
1782 | {
|
---|
1783 | SSMR3PutU8(pSSM, u8RecType | PGM_STATE_REC_FLAG_ADDR);
|
---|
1784 | rc = SSMR3PutGCPhys(pSSM, GCPhys);
|
---|
1785 | }
|
---|
1786 | }
|
---|
1787 | if (RT_FAILURE(rc))
|
---|
1788 | return rc;
|
---|
1789 |
|
---|
1790 | PGM_LOCK_VOID(pVM);
|
---|
1791 | if (!fSkipped)
|
---|
1792 | GCPhysLast = GCPhys;
|
---|
1793 | if (paLSPages)
|
---|
1794 | {
|
---|
1795 | paLSPages[iPage].fDirty = 0;
|
---|
1796 | pVM->pgm.s.LiveSave.Ram.cReadyPages++;
|
---|
1797 | if (fZero)
|
---|
1798 | pVM->pgm.s.LiveSave.Ram.cZeroPages++;
|
---|
1799 | pVM->pgm.s.LiveSave.Ram.cDirtyPages--;
|
---|
1800 | pVM->pgm.s.LiveSave.cSavedPages++;
|
---|
1801 | }
|
---|
1802 | if (idRamRangesGen != pVM->pgm.s.RamRangeUnion.idGeneration)
|
---|
1803 | {
|
---|
1804 | GCPhysCur = GCPhys | GUEST_PAGE_OFFSET_MASK;
|
---|
1805 | break; /* restart */
|
---|
1806 | }
|
---|
1807 |
|
---|
1808 | } /* for each page in range */
|
---|
1809 |
|
---|
1810 | if (GCPhysCur != 0)
|
---|
1811 | break; /* Yield + ramrange change */
|
---|
1812 | GCPhysCur = pCur->GCPhysLast;
|
---|
1813 | }
|
---|
1814 | } /* for each range */
|
---|
1815 |
|
---|
1816 | /* We must use the starting lookup count here to determine whether we've
|
---|
1817 | been thru all or not, since using the current count could lead us to
|
---|
1818 | skip the final range if one was umapped while we yielded the lock. */
|
---|
1819 | } while (idxLookup < cRamRangeLookupEntries);
|
---|
1820 |
|
---|
1821 | PGM_UNLOCK(pVM);
|
---|
1822 |
|
---|
1823 | return VINF_SUCCESS;
|
---|
1824 | }
|
---|
1825 |
|
---|
1826 |
|
---|
1827 | /**
|
---|
1828 | * Cleans up RAM pages after a live save.
|
---|
1829 | *
|
---|
1830 | * @param pVM The cross context VM structure.
|
---|
1831 | */
|
---|
1832 | static void pgmR3DoneRamPages(PVM pVM)
|
---|
1833 | {
|
---|
1834 | /*
|
---|
1835 | * Free the tracking arrays and disable write monitoring.
|
---|
1836 | *
|
---|
1837 | * Play nice with the PGM lock in case we're called while the VM is still
|
---|
1838 | * running. This means we have to delay the freeing since we wish to use
|
---|
1839 | * paLSPages as an indicator of which RAM ranges which we need to scan for
|
---|
1840 | * write monitored pages.
|
---|
1841 | */
|
---|
1842 | void *pvToFree = NULL;
|
---|
1843 | uint32_t cMonitoredPages = 0;
|
---|
1844 | uint32_t idRamRangeMax;
|
---|
1845 | uint32_t idRamRange;
|
---|
1846 | PGM_LOCK_VOID(pVM);
|
---|
1847 | do
|
---|
1848 | {
|
---|
1849 | idRamRangeMax = RT_MIN(pVM->pgm.s.idRamRangeMax, RT_ELEMENTS(pVM->pgm.s.apRamRanges) - 1U);
|
---|
1850 | for (idRamRange = 0; idRamRange <= idRamRangeMax; idRamRange++)
|
---|
1851 | {
|
---|
1852 | PPGMRAMRANGE const pCur = pVM->pgm.s.apRamRanges[idRamRange];
|
---|
1853 | Assert(pCur || idRamRange == 0);
|
---|
1854 | if (!pCur) continue;
|
---|
1855 | Assert(pCur->idRange == idRamRange);
|
---|
1856 |
|
---|
1857 | if (pCur->paLSPages)
|
---|
1858 | {
|
---|
1859 | if (pvToFree)
|
---|
1860 | {
|
---|
1861 | uint32_t const idRamRangesGen = pVM->pgm.s.RamRangeUnion.idGeneration;
|
---|
1862 | PGM_UNLOCK(pVM);
|
---|
1863 | MMR3HeapFree(pvToFree);
|
---|
1864 | pvToFree = NULL;
|
---|
1865 | PGM_LOCK_VOID(pVM);
|
---|
1866 | if (idRamRangesGen != pVM->pgm.s.RamRangeUnion.idGeneration)
|
---|
1867 | break; /* start over again. */
|
---|
1868 | }
|
---|
1869 |
|
---|
1870 | pvToFree = pCur->paLSPages;
|
---|
1871 | pCur->paLSPages = NULL;
|
---|
1872 |
|
---|
1873 | uint32_t iPage = pCur->cb >> GUEST_PAGE_SHIFT;
|
---|
1874 | while (iPage--)
|
---|
1875 | {
|
---|
1876 | PPGMPAGE pPage = &pCur->aPages[iPage];
|
---|
1877 | PGM_PAGE_CLEAR_WRITTEN_TO(pVM, pPage);
|
---|
1878 | if (PGM_PAGE_GET_STATE(pPage) == PGM_PAGE_STATE_WRITE_MONITORED)
|
---|
1879 | {
|
---|
1880 | PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_ALLOCATED);
|
---|
1881 | cMonitoredPages++;
|
---|
1882 | }
|
---|
1883 | }
|
---|
1884 | }
|
---|
1885 | }
|
---|
1886 | } while (idRamRange <= idRamRangeMax);
|
---|
1887 |
|
---|
1888 | Assert(pVM->pgm.s.cMonitoredPages >= cMonitoredPages);
|
---|
1889 | if (pVM->pgm.s.cMonitoredPages < cMonitoredPages)
|
---|
1890 | pVM->pgm.s.cMonitoredPages = 0;
|
---|
1891 | else
|
---|
1892 | pVM->pgm.s.cMonitoredPages -= cMonitoredPages;
|
---|
1893 |
|
---|
1894 | PGM_UNLOCK(pVM);
|
---|
1895 |
|
---|
1896 | MMR3HeapFree(pvToFree);
|
---|
1897 | pvToFree = NULL;
|
---|
1898 | }
|
---|
1899 |
|
---|
1900 |
|
---|
1901 | /**
|
---|
1902 | * @callback_method_impl{FNSSMINTLIVEEXEC}
|
---|
1903 | */
|
---|
1904 | static DECLCALLBACK(int) pgmR3LiveExec(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
|
---|
1905 | {
|
---|
1906 | int rc;
|
---|
1907 |
|
---|
1908 | /*
|
---|
1909 | * Save the MMIO2 and ROM range IDs in pass 0.
|
---|
1910 | */
|
---|
1911 | if (uPass == 0)
|
---|
1912 | {
|
---|
1913 | rc = pgmR3SaveRamConfig(pVM, pSSM);
|
---|
1914 | if (RT_FAILURE(rc))
|
---|
1915 | return rc;
|
---|
1916 | rc = pgmR3SaveRomRanges(pVM, pSSM);
|
---|
1917 | if (RT_FAILURE(rc))
|
---|
1918 | return rc;
|
---|
1919 | rc = pgmR3SaveMmio2Ranges(pVM, pSSM);
|
---|
1920 | if (RT_FAILURE(rc))
|
---|
1921 | return rc;
|
---|
1922 | }
|
---|
1923 | /*
|
---|
1924 | * Reset the page-per-second estimate to avoid inflation by the initial
|
---|
1925 | * load of zero pages. pgmR3LiveVote ASSUMES this is done at pass 7.
|
---|
1926 | */
|
---|
1927 | else if (uPass == 7)
|
---|
1928 | {
|
---|
1929 | pVM->pgm.s.LiveSave.cSavedPages = 0;
|
---|
1930 | pVM->pgm.s.LiveSave.uSaveStartNS = RTTimeNanoTS();
|
---|
1931 | }
|
---|
1932 |
|
---|
1933 | /*
|
---|
1934 | * Do the scanning.
|
---|
1935 | */
|
---|
1936 | pgmR3ScanRomPages(pVM);
|
---|
1937 | pgmR3ScanMmio2Pages(pVM, uPass);
|
---|
1938 | pgmR3ScanRamPages(pVM, false /*fFinalPass*/);
|
---|
1939 | pgmR3PoolClearAll(pVM, true /*fFlushRemTlb*/); /** @todo this could perhaps be optimized a bit. */
|
---|
1940 |
|
---|
1941 | /*
|
---|
1942 | * Save the pages.
|
---|
1943 | */
|
---|
1944 | if (uPass == 0)
|
---|
1945 | rc = pgmR3SaveRomVirginPages( pVM, pSSM, true /*fLiveSave*/);
|
---|
1946 | else
|
---|
1947 | rc = VINF_SUCCESS;
|
---|
1948 | if (RT_SUCCESS(rc))
|
---|
1949 | rc = pgmR3SaveShadowedRomPages(pVM, pSSM, true /*fLiveSave*/, false /*fFinalPass*/);
|
---|
1950 | if (RT_SUCCESS(rc))
|
---|
1951 | rc = pgmR3SaveMmio2Pages( pVM, pSSM, true /*fLiveSave*/, uPass);
|
---|
1952 | if (RT_SUCCESS(rc))
|
---|
1953 | rc = pgmR3SaveRamPages( pVM, pSSM, true /*fLiveSave*/, uPass);
|
---|
1954 | SSMR3PutU8(pSSM, PGM_STATE_REC_END); /* (Ignore the rc, SSM takes care of it.) */
|
---|
1955 |
|
---|
1956 | return rc;
|
---|
1957 | }
|
---|
1958 |
|
---|
1959 |
|
---|
1960 | /**
|
---|
1961 | * @callback_method_impl{FNSSMINTLIVEVOTE}
|
---|
1962 | */
|
---|
1963 | static DECLCALLBACK(int) pgmR3LiveVote(PVM pVM, PSSMHANDLE pSSM, uint32_t uPass)
|
---|
1964 | {
|
---|
1965 | /*
|
---|
1966 | * Update and calculate parameters used in the decision making.
|
---|
1967 | */
|
---|
1968 | const uint32_t cHistoryEntries = RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory);
|
---|
1969 |
|
---|
1970 | /* update history. */
|
---|
1971 | PGM_LOCK_VOID(pVM);
|
---|
1972 | uint32_t const cWrittenToPages = pVM->pgm.s.cWrittenToPages;
|
---|
1973 | PGM_UNLOCK(pVM);
|
---|
1974 | uint32_t const cDirtyNow = pVM->pgm.s.LiveSave.Rom.cDirtyPages
|
---|
1975 | + pVM->pgm.s.LiveSave.Mmio2.cDirtyPages
|
---|
1976 | + pVM->pgm.s.LiveSave.Ram.cDirtyPages
|
---|
1977 | + cWrittenToPages;
|
---|
1978 | uint32_t i = pVM->pgm.s.LiveSave.iDirtyPagesHistory;
|
---|
1979 | pVM->pgm.s.LiveSave.acDirtyPagesHistory[i] = cDirtyNow;
|
---|
1980 | pVM->pgm.s.LiveSave.iDirtyPagesHistory = (i + 1) % cHistoryEntries;
|
---|
1981 |
|
---|
1982 | /* calc shortterm average (4 passes). */
|
---|
1983 | AssertCompile(RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory) > 4);
|
---|
1984 | uint64_t cTotal = pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
|
---|
1985 | cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 1) % cHistoryEntries];
|
---|
1986 | cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 2) % cHistoryEntries];
|
---|
1987 | cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[(i + cHistoryEntries - 3) % cHistoryEntries];
|
---|
1988 | uint32_t const cDirtyPagesShort = cTotal / 4;
|
---|
1989 | pVM->pgm.s.LiveSave.cDirtyPagesShort = cDirtyPagesShort;
|
---|
1990 |
|
---|
1991 | /* calc longterm average. */
|
---|
1992 | cTotal = 0;
|
---|
1993 | if (uPass < cHistoryEntries)
|
---|
1994 | for (i = 0; i < cHistoryEntries && i <= uPass; i++)
|
---|
1995 | cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
|
---|
1996 | else
|
---|
1997 | for (i = 0; i < cHistoryEntries; i++)
|
---|
1998 | cTotal += pVM->pgm.s.LiveSave.acDirtyPagesHistory[i];
|
---|
1999 | uint32_t const cDirtyPagesLong = cTotal / cHistoryEntries;
|
---|
2000 | pVM->pgm.s.LiveSave.cDirtyPagesLong = cDirtyPagesLong;
|
---|
2001 |
|
---|
2002 | /* estimate the speed */
|
---|
2003 | uint64_t cNsElapsed = RTTimeNanoTS() - pVM->pgm.s.LiveSave.uSaveStartNS;
|
---|
2004 | uint32_t cPagesPerSecond = (uint32_t)( (long double)pVM->pgm.s.LiveSave.cSavedPages
|
---|
2005 | / ((long double)cNsElapsed / 1000000000.0) );
|
---|
2006 | pVM->pgm.s.LiveSave.cPagesPerSecond = cPagesPerSecond;
|
---|
2007 |
|
---|
2008 | /*
|
---|
2009 | * Try make a decision.
|
---|
2010 | */
|
---|
2011 | if ( cDirtyPagesShort <= cDirtyPagesLong
|
---|
2012 | && ( cDirtyNow <= cDirtyPagesShort
|
---|
2013 | || cDirtyNow - cDirtyPagesShort < RT_MIN(cDirtyPagesShort / 8, 16)
|
---|
2014 | )
|
---|
2015 | )
|
---|
2016 | {
|
---|
2017 | if (uPass > 10)
|
---|
2018 | {
|
---|
2019 | uint32_t cMsLeftShort = (uint32_t)(cDirtyPagesShort / (long double)cPagesPerSecond * 1000.0);
|
---|
2020 | uint32_t cMsLeftLong = (uint32_t)(cDirtyPagesLong / (long double)cPagesPerSecond * 1000.0);
|
---|
2021 | uint32_t cMsMaxDowntime = SSMR3HandleMaxDowntime(pSSM);
|
---|
2022 | if (cMsMaxDowntime < 32)
|
---|
2023 | cMsMaxDowntime = 32;
|
---|
2024 | if ( ( cMsLeftLong <= cMsMaxDowntime
|
---|
2025 | && cMsLeftShort < cMsMaxDowntime)
|
---|
2026 | || cMsLeftShort < cMsMaxDowntime / 2
|
---|
2027 | )
|
---|
2028 | {
|
---|
2029 | Log(("pgmR3LiveVote: VINF_SUCCESS - pass=%d cDirtyPagesShort=%u|%ums cDirtyPagesLong=%u|%ums cMsMaxDowntime=%u\n",
|
---|
2030 | uPass, cDirtyPagesShort, cMsLeftShort, cDirtyPagesLong, cMsLeftLong, cMsMaxDowntime));
|
---|
2031 | return VINF_SUCCESS;
|
---|
2032 | }
|
---|
2033 | }
|
---|
2034 | else
|
---|
2035 | {
|
---|
2036 | if ( ( cDirtyPagesShort <= 128
|
---|
2037 | && cDirtyPagesLong <= 1024)
|
---|
2038 | || cDirtyPagesLong <= 256
|
---|
2039 | )
|
---|
2040 | {
|
---|
2041 | Log(("pgmR3LiveVote: VINF_SUCCESS - pass=%d cDirtyPagesShort=%u cDirtyPagesLong=%u\n", uPass, cDirtyPagesShort, cDirtyPagesLong));
|
---|
2042 | return VINF_SUCCESS;
|
---|
2043 | }
|
---|
2044 | }
|
---|
2045 | }
|
---|
2046 |
|
---|
2047 | /*
|
---|
2048 | * Come up with a completion percentage. Currently this is a simple
|
---|
2049 | * dirty page (long term) vs. total pages ratio + some pass trickery.
|
---|
2050 | */
|
---|
2051 | unsigned uPctDirty = (unsigned)( (long double)cDirtyPagesLong
|
---|
2052 | / (pVM->pgm.s.cAllPages - pVM->pgm.s.LiveSave.cIgnoredPages - pVM->pgm.s.cZeroPages) );
|
---|
2053 | if (uPctDirty <= 100)
|
---|
2054 | SSMR3HandleReportLivePercent(pSSM, RT_MIN(100 - uPctDirty, uPass * 2));
|
---|
2055 | else
|
---|
2056 | AssertMsgFailed(("uPctDirty=%u cDirtyPagesLong=%#x cAllPages=%#x cIgnoredPages=%#x cZeroPages=%#x\n",
|
---|
2057 | uPctDirty, cDirtyPagesLong, pVM->pgm.s.cAllPages, pVM->pgm.s.LiveSave.cIgnoredPages, pVM->pgm.s.cZeroPages));
|
---|
2058 |
|
---|
2059 | return VINF_SSM_VOTE_FOR_ANOTHER_PASS;
|
---|
2060 | }
|
---|
2061 |
|
---|
2062 |
|
---|
2063 | /**
|
---|
2064 | * @callback_method_impl{FNSSMINTLIVEPREP}
|
---|
2065 | *
|
---|
2066 | * This will attempt to allocate and initialize the tracking structures. It
|
---|
2067 | * will also prepare for write monitoring of pages and initialize PGM::LiveSave.
|
---|
2068 | * pgmR3SaveDone will do the cleanups.
|
---|
2069 | */
|
---|
2070 | static DECLCALLBACK(int) pgmR3LivePrep(PVM pVM, PSSMHANDLE pSSM)
|
---|
2071 | {
|
---|
2072 | /*
|
---|
2073 | * Indicate that we will be using the write monitoring.
|
---|
2074 | */
|
---|
2075 | PGM_LOCK_VOID(pVM);
|
---|
2076 | /** @todo find a way of mediating this when more users are added. */
|
---|
2077 | if (pVM->pgm.s.fPhysWriteMonitoringEngaged)
|
---|
2078 | {
|
---|
2079 | PGM_UNLOCK(pVM);
|
---|
2080 | AssertLogRelFailedReturn(VERR_PGM_WRITE_MONITOR_ENGAGED);
|
---|
2081 | }
|
---|
2082 | pVM->pgm.s.fPhysWriteMonitoringEngaged = true;
|
---|
2083 | PGM_UNLOCK(pVM);
|
---|
2084 |
|
---|
2085 | /*
|
---|
2086 | * Initialize the statistics.
|
---|
2087 | */
|
---|
2088 | pVM->pgm.s.LiveSave.Rom.cReadyPages = 0;
|
---|
2089 | pVM->pgm.s.LiveSave.Rom.cDirtyPages = 0;
|
---|
2090 | pVM->pgm.s.LiveSave.Mmio2.cReadyPages = 0;
|
---|
2091 | pVM->pgm.s.LiveSave.Mmio2.cDirtyPages = 0;
|
---|
2092 | pVM->pgm.s.LiveSave.Ram.cReadyPages = 0;
|
---|
2093 | pVM->pgm.s.LiveSave.Ram.cDirtyPages = 0;
|
---|
2094 | pVM->pgm.s.LiveSave.cIgnoredPages = 0;
|
---|
2095 | pVM->pgm.s.LiveSave.fActive = true;
|
---|
2096 | for (unsigned i = 0; i < RT_ELEMENTS(pVM->pgm.s.LiveSave.acDirtyPagesHistory); i++)
|
---|
2097 | pVM->pgm.s.LiveSave.acDirtyPagesHistory[i] = UINT32_MAX / 2;
|
---|
2098 | pVM->pgm.s.LiveSave.iDirtyPagesHistory = 0;
|
---|
2099 | pVM->pgm.s.LiveSave.cSavedPages = 0;
|
---|
2100 | pVM->pgm.s.LiveSave.uSaveStartNS = RTTimeNanoTS();
|
---|
2101 | pVM->pgm.s.LiveSave.cPagesPerSecond = 8192;
|
---|
2102 |
|
---|
2103 | /*
|
---|
2104 | * Per page type.
|
---|
2105 | */
|
---|
2106 | int rc = pgmR3PrepRomPages(pVM);
|
---|
2107 | if (RT_SUCCESS(rc))
|
---|
2108 | rc = pgmR3PrepMmio2Pages(pVM);
|
---|
2109 | if (RT_SUCCESS(rc))
|
---|
2110 | rc = pgmR3PrepRamPages(pVM);
|
---|
2111 |
|
---|
2112 | NOREF(pSSM);
|
---|
2113 | return rc;
|
---|
2114 | }
|
---|
2115 |
|
---|
2116 |
|
---|
2117 | /**
|
---|
2118 | * @callback_method_impl{FNSSMINTSAVEEXEC}
|
---|
2119 | */
|
---|
2120 | static DECLCALLBACK(int) pgmR3SaveExec(PVM pVM, PSSMHANDLE pSSM)
|
---|
2121 | {
|
---|
2122 | PPGM pPGM = &pVM->pgm.s;
|
---|
2123 |
|
---|
2124 | /*
|
---|
2125 | * Lock PGM and set the no-more-writes indicator.
|
---|
2126 | */
|
---|
2127 | PGM_LOCK_VOID(pVM);
|
---|
2128 | pVM->pgm.s.fNoMorePhysWrites = true;
|
---|
2129 |
|
---|
2130 | /*
|
---|
2131 | * Save basic data (required / unaffected by relocation).
|
---|
2132 | */
|
---|
2133 | int rc = SSMR3PutStructEx(pSSM, pPGM, sizeof(*pPGM), 0 /*fFlags*/, &s_aPGMFields[0], NULL /*pvUser*/);
|
---|
2134 |
|
---|
2135 | for (VMCPUID idCpu = 0; idCpu < pVM->cCpus && RT_SUCCESS(rc); idCpu++)
|
---|
2136 | rc = SSMR3PutStruct(pSSM, &pVM->apCpusR3[idCpu]->pgm.s, &s_aPGMCpuFields[0]);
|
---|
2137 |
|
---|
2138 | /*
|
---|
2139 | * Save the (remainder of the) memory.
|
---|
2140 | */
|
---|
2141 | if (RT_SUCCESS(rc))
|
---|
2142 | {
|
---|
2143 | if (pVM->pgm.s.LiveSave.fActive)
|
---|
2144 | {
|
---|
2145 | pgmR3ScanRomPages(pVM);
|
---|
2146 | pgmR3ScanMmio2Pages(pVM, SSM_PASS_FINAL);
|
---|
2147 | pgmR3ScanRamPages(pVM, true /*fFinalPass*/);
|
---|
2148 |
|
---|
2149 | rc = pgmR3SaveShadowedRomPages( pVM, pSSM, true /*fLiveSave*/, true /*fFinalPass*/);
|
---|
2150 | if (RT_SUCCESS(rc))
|
---|
2151 | rc = pgmR3SaveMmio2Pages( pVM, pSSM, true /*fLiveSave*/, SSM_PASS_FINAL);
|
---|
2152 | if (RT_SUCCESS(rc))
|
---|
2153 | rc = pgmR3SaveRamPages( pVM, pSSM, true /*fLiveSave*/, SSM_PASS_FINAL);
|
---|
2154 | }
|
---|
2155 | else
|
---|
2156 | {
|
---|
2157 | rc = pgmR3SaveRamConfig(pVM, pSSM);
|
---|
2158 | if (RT_SUCCESS(rc))
|
---|
2159 | rc = pgmR3SaveRomRanges(pVM, pSSM);
|
---|
2160 | if (RT_SUCCESS(rc))
|
---|
2161 | rc = pgmR3SaveMmio2Ranges(pVM, pSSM);
|
---|
2162 | if (RT_SUCCESS(rc))
|
---|
2163 | rc = pgmR3SaveRomVirginPages( pVM, pSSM, false /*fLiveSave*/);
|
---|
2164 | if (RT_SUCCESS(rc))
|
---|
2165 | rc = pgmR3SaveShadowedRomPages(pVM, pSSM, false /*fLiveSave*/, true /*fFinalPass*/);
|
---|
2166 | if (RT_SUCCESS(rc))
|
---|
2167 | rc = pgmR3SaveMmio2Pages( pVM, pSSM, false /*fLiveSave*/, SSM_PASS_FINAL);
|
---|
2168 | if (RT_SUCCESS(rc))
|
---|
2169 | rc = pgmR3SaveRamPages( pVM, pSSM, false /*fLiveSave*/, SSM_PASS_FINAL);
|
---|
2170 | }
|
---|
2171 | SSMR3PutU8(pSSM, PGM_STATE_REC_END); /* (Ignore the rc, SSM takes of it.) */
|
---|
2172 | }
|
---|
2173 |
|
---|
2174 | PGM_UNLOCK(pVM);
|
---|
2175 | return rc;
|
---|
2176 | }
|
---|
2177 |
|
---|
2178 |
|
---|
2179 | /**
|
---|
2180 | * @callback_method_impl{FNSSMINTSAVEDONE}
|
---|
2181 | */
|
---|
2182 | static DECLCALLBACK(int) pgmR3SaveDone(PVM pVM, PSSMHANDLE pSSM)
|
---|
2183 | {
|
---|
2184 | /*
|
---|
2185 | * Do per page type cleanups first.
|
---|
2186 | */
|
---|
2187 | if (pVM->pgm.s.LiveSave.fActive)
|
---|
2188 | {
|
---|
2189 | pgmR3DoneRomPages(pVM);
|
---|
2190 | pgmR3DoneMmio2Pages(pVM);
|
---|
2191 | pgmR3DoneRamPages(pVM);
|
---|
2192 | }
|
---|
2193 |
|
---|
2194 | /*
|
---|
2195 | * Clear the live save indicator and disengage write monitoring.
|
---|
2196 | */
|
---|
2197 | PGM_LOCK_VOID(pVM);
|
---|
2198 | pVM->pgm.s.LiveSave.fActive = false;
|
---|
2199 | /** @todo this is blindly assuming that we're the only user of write
|
---|
2200 | * monitoring. Fix this when more users are added. */
|
---|
2201 | pVM->pgm.s.fPhysWriteMonitoringEngaged = false;
|
---|
2202 | PGM_UNLOCK(pVM);
|
---|
2203 |
|
---|
2204 | NOREF(pSSM);
|
---|
2205 | return VINF_SUCCESS;
|
---|
2206 | }
|
---|
2207 |
|
---|
2208 |
|
---|
2209 | /**
|
---|
2210 | * @callback_method_impl{FNSSMINTLOADPREP}
|
---|
2211 | */
|
---|
2212 | static DECLCALLBACK(int) pgmR3LoadPrep(PVM pVM, PSSMHANDLE pSSM)
|
---|
2213 | {
|
---|
2214 | /*
|
---|
2215 | * Call the reset function to make sure all the memory is cleared.
|
---|
2216 | */
|
---|
2217 | PGMR3Reset(pVM);
|
---|
2218 | pVM->pgm.s.LiveSave.fActive = false;
|
---|
2219 | NOREF(pSSM);
|
---|
2220 | return VINF_SUCCESS;
|
---|
2221 | }
|
---|
2222 |
|
---|
2223 |
|
---|
2224 | /**
|
---|
2225 | * Load an ignored page.
|
---|
2226 | *
|
---|
2227 | * @returns VBox status code.
|
---|
2228 | * @param pSSM The saved state handle.
|
---|
2229 | */
|
---|
2230 | static int pgmR3LoadPageToDevNullOld(PSSMHANDLE pSSM)
|
---|
2231 | {
|
---|
2232 | uint8_t abPage[GUEST_PAGE_SIZE];
|
---|
2233 | return SSMR3GetMem(pSSM, &abPage[0], sizeof(abPage));
|
---|
2234 | }
|
---|
2235 |
|
---|
2236 |
|
---|
2237 | /**
|
---|
2238 | * Compares a page with an old save type value.
|
---|
2239 | *
|
---|
2240 | * @returns true if equal, false if not.
|
---|
2241 | * @param pPage The page to compare.
|
---|
2242 | * @param uOldType The old type value from the saved state.
|
---|
2243 | */
|
---|
2244 | DECLINLINE(bool) pgmR3CompareNewAndOldPageTypes(PPGMPAGE pPage, uint8_t uOldType)
|
---|
2245 | {
|
---|
2246 | uint8_t uOldPageType;
|
---|
2247 | switch (PGM_PAGE_GET_TYPE(pPage))
|
---|
2248 | {
|
---|
2249 | case PGMPAGETYPE_INVALID: uOldPageType = PGMPAGETYPE_OLD_INVALID; break;
|
---|
2250 | case PGMPAGETYPE_RAM: uOldPageType = PGMPAGETYPE_OLD_RAM; break;
|
---|
2251 | case PGMPAGETYPE_MMIO2: uOldPageType = PGMPAGETYPE_OLD_MMIO2; break;
|
---|
2252 | case PGMPAGETYPE_MMIO2_ALIAS_MMIO: uOldPageType = PGMPAGETYPE_OLD_MMIO2_ALIAS_MMIO; break;
|
---|
2253 | case PGMPAGETYPE_ROM_SHADOW: uOldPageType = PGMPAGETYPE_OLD_ROM_SHADOW; break;
|
---|
2254 | case PGMPAGETYPE_ROM: uOldPageType = PGMPAGETYPE_OLD_ROM; break;
|
---|
2255 | case PGMPAGETYPE_SPECIAL_ALIAS_MMIO: RT_FALL_THRU();
|
---|
2256 | case PGMPAGETYPE_MMIO: uOldPageType = PGMPAGETYPE_OLD_MMIO; break;
|
---|
2257 | default:
|
---|
2258 | AssertFailed();
|
---|
2259 | uOldPageType = PGMPAGETYPE_OLD_INVALID;
|
---|
2260 | break;
|
---|
2261 | }
|
---|
2262 | return uOldPageType == uOldType;
|
---|
2263 | }
|
---|
2264 |
|
---|
2265 |
|
---|
2266 | /**
|
---|
2267 | * Loads a page without any bits in the saved state, i.e. making sure it's
|
---|
2268 | * really zero.
|
---|
2269 | *
|
---|
2270 | * @returns VBox status code.
|
---|
2271 | * @param pVM The cross context VM structure.
|
---|
2272 | * @param uOldType The page type or PGMPAGETYPE_OLD_INVALID (old saved
|
---|
2273 | * state).
|
---|
2274 | * @param pPage The guest page tracking structure.
|
---|
2275 | * @param GCPhys The page address.
|
---|
2276 | * @param pRam The ram range (logging).
|
---|
2277 | */
|
---|
2278 | static int pgmR3LoadPageZeroOld(PVM pVM, uint8_t uOldType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
|
---|
2279 | {
|
---|
2280 | if ( uOldType != PGMPAGETYPE_OLD_INVALID
|
---|
2281 | && !pgmR3CompareNewAndOldPageTypes(pPage, uOldType))
|
---|
2282 | return VERR_SSM_UNEXPECTED_DATA;
|
---|
2283 |
|
---|
2284 | /* I think this should be sufficient. */
|
---|
2285 | if ( !PGM_PAGE_IS_ZERO(pPage)
|
---|
2286 | && !PGM_PAGE_IS_BALLOONED(pPage))
|
---|
2287 | return VERR_SSM_UNEXPECTED_DATA;
|
---|
2288 |
|
---|
2289 | NOREF(pVM);
|
---|
2290 | NOREF(GCPhys);
|
---|
2291 | NOREF(pRam);
|
---|
2292 | return VINF_SUCCESS;
|
---|
2293 | }
|
---|
2294 |
|
---|
2295 |
|
---|
2296 | /**
|
---|
2297 | * Loads a page from the saved state.
|
---|
2298 | *
|
---|
2299 | * @returns VBox status code.
|
---|
2300 | * @param pVM The cross context VM structure.
|
---|
2301 | * @param pSSM The SSM handle.
|
---|
2302 | * @param uOldType The page type or PGMPAGETYPE_OLD_INVALID (old saved
|
---|
2303 | * state).
|
---|
2304 | * @param pPage The guest page tracking structure.
|
---|
2305 | * @param GCPhys The page address.
|
---|
2306 | * @param pRam The ram range (logging).
|
---|
2307 | */
|
---|
2308 | static int pgmR3LoadPageBitsOld(PVM pVM, PSSMHANDLE pSSM, uint8_t uOldType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
|
---|
2309 | {
|
---|
2310 | /*
|
---|
2311 | * Match up the type, dealing with MMIO2 aliases (dropped).
|
---|
2312 | */
|
---|
2313 | AssertLogRelMsgReturn( uOldType == PGMPAGETYPE_INVALID
|
---|
2314 | || pgmR3CompareNewAndOldPageTypes(pPage, uOldType)
|
---|
2315 | /* kudge for the expanded PXE bios (r67885) - @bugref{5687}: */
|
---|
2316 | || ( uOldType == PGMPAGETYPE_OLD_RAM
|
---|
2317 | && GCPhys >= 0xed000
|
---|
2318 | && GCPhys <= 0xeffff
|
---|
2319 | && PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM)
|
---|
2320 | ,
|
---|
2321 | ("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc),
|
---|
2322 | VERR_SSM_UNEXPECTED_DATA);
|
---|
2323 |
|
---|
2324 | /*
|
---|
2325 | * Load the page.
|
---|
2326 | */
|
---|
2327 | PGMPAGEMAPLOCK PgMpLck;
|
---|
2328 | void *pvPage;
|
---|
2329 | int rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvPage, &PgMpLck);
|
---|
2330 | if (RT_SUCCESS(rc))
|
---|
2331 | {
|
---|
2332 | rc = SSMR3GetMem(pSSM, pvPage, GUEST_PAGE_SIZE);
|
---|
2333 | pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
|
---|
2334 | }
|
---|
2335 |
|
---|
2336 | return rc;
|
---|
2337 | }
|
---|
2338 |
|
---|
2339 |
|
---|
2340 | /**
|
---|
2341 | * Loads a page (counter part to pgmR3SavePage).
|
---|
2342 | *
|
---|
2343 | * @returns VBox status code, fully bitched errors.
|
---|
2344 | * @param pVM The cross context VM structure.
|
---|
2345 | * @param pSSM The SSM handle.
|
---|
2346 | * @param uOldType The page type.
|
---|
2347 | * @param pPage The page.
|
---|
2348 | * @param GCPhys The page address.
|
---|
2349 | * @param pRam The RAM range (for error messages).
|
---|
2350 | */
|
---|
2351 | static int pgmR3LoadPageOld(PVM pVM, PSSMHANDLE pSSM, uint8_t uOldType, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
|
---|
2352 | {
|
---|
2353 | uint8_t uState;
|
---|
2354 | int rc = SSMR3GetU8(pSSM, &uState);
|
---|
2355 | AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s rc=%Rrc\n", pPage, GCPhys, pRam->pszDesc, rc), rc);
|
---|
2356 | if (uState == 0 /* zero */)
|
---|
2357 | rc = pgmR3LoadPageZeroOld(pVM, uOldType, pPage, GCPhys, pRam);
|
---|
2358 | else if (uState == 1)
|
---|
2359 | rc = pgmR3LoadPageBitsOld(pVM, pSSM, uOldType, pPage, GCPhys, pRam);
|
---|
2360 | else
|
---|
2361 | rc = VERR_PGM_INVALID_SAVED_PAGE_STATE;
|
---|
2362 | AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] uState=%d uOldType=%d GCPhys=%RGp %s rc=%Rrc\n",
|
---|
2363 | pPage, uState, uOldType, GCPhys, pRam->pszDesc, rc),
|
---|
2364 | rc);
|
---|
2365 | return VINF_SUCCESS;
|
---|
2366 | }
|
---|
2367 |
|
---|
2368 |
|
---|
2369 | /**
|
---|
2370 | * Loads a shadowed ROM page.
|
---|
2371 | *
|
---|
2372 | * @returns VBox status code, errors are fully bitched.
|
---|
2373 | * @param pVM The cross context VM structure.
|
---|
2374 | * @param pSSM The saved state handle.
|
---|
2375 | * @param pPage The page.
|
---|
2376 | * @param GCPhys The page address.
|
---|
2377 | * @param pRam The RAM range (for error messages).
|
---|
2378 | */
|
---|
2379 | static int pgmR3LoadShadowedRomPageOld(PVM pVM, PSSMHANDLE pSSM, PPGMPAGE pPage, RTGCPHYS GCPhys, PPGMRAMRANGE pRam)
|
---|
2380 | {
|
---|
2381 | /*
|
---|
2382 | * Load and set the protection first, then load the two pages, the first
|
---|
2383 | * one is the active the other is the passive.
|
---|
2384 | */
|
---|
2385 | PPGMROMPAGE pRomPage = pgmR3GetRomPage(pVM, GCPhys);
|
---|
2386 | AssertLogRelMsgReturn(pRomPage, ("GCPhys=%RGp %s\n", GCPhys, pRam->pszDesc), VERR_PGM_SAVED_ROM_PAGE_NOT_FOUND);
|
---|
2387 |
|
---|
2388 | uint8_t uProt;
|
---|
2389 | int rc = SSMR3GetU8(pSSM, &uProt);
|
---|
2390 | AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] GCPhys=%#x %s\n", pPage, GCPhys, pRam->pszDesc), rc);
|
---|
2391 | PGMROMPROT enmProt = (PGMROMPROT)uProt;
|
---|
2392 | AssertLogRelMsgReturn( enmProt >= PGMROMPROT_INVALID
|
---|
2393 | && enmProt < PGMROMPROT_END,
|
---|
2394 | ("enmProt=%d pPage=%R[pgmpage] GCPhys=%#x %s\n", enmProt, pPage, GCPhys, pRam->pszDesc),
|
---|
2395 | VERR_SSM_UNEXPECTED_DATA);
|
---|
2396 |
|
---|
2397 | if (pRomPage->enmProt != enmProt)
|
---|
2398 | {
|
---|
2399 | rc = PGMR3PhysRomProtect(pVM, GCPhys, GUEST_PAGE_SIZE, enmProt);
|
---|
2400 | AssertLogRelRCReturn(rc, rc);
|
---|
2401 | AssertLogRelReturn(pRomPage->enmProt == enmProt, VERR_PGM_SAVED_ROM_PAGE_PROT);
|
---|
2402 | }
|
---|
2403 |
|
---|
2404 | PPGMPAGE pPageActive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Virgin : &pRomPage->Shadow;
|
---|
2405 | PPGMPAGE pPagePassive = PGMROMPROT_IS_ROM(enmProt) ? &pRomPage->Shadow : &pRomPage->Virgin;
|
---|
2406 | uint8_t u8ActiveType = PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM : PGMPAGETYPE_ROM_SHADOW;
|
---|
2407 | uint8_t u8PassiveType= PGMROMPROT_IS_ROM(enmProt) ? PGMPAGETYPE_ROM_SHADOW : PGMPAGETYPE_ROM;
|
---|
2408 |
|
---|
2409 | /** @todo this isn't entirely correct as long as pgmPhysGCPhys2CCPtrInternal is
|
---|
2410 | * used down the line (will the 2nd page will be written to the first
|
---|
2411 | * one because of a false TLB hit since the TLB is using GCPhys and
|
---|
2412 | * doesn't check the HCPhys of the desired page). */
|
---|
2413 | rc = pgmR3LoadPageOld(pVM, pSSM, u8ActiveType, pPage, GCPhys, pRam);
|
---|
2414 | if (RT_SUCCESS(rc))
|
---|
2415 | {
|
---|
2416 | *pPageActive = *pPage;
|
---|
2417 | rc = pgmR3LoadPageOld(pVM, pSSM, u8PassiveType, pPagePassive, GCPhys, pRam);
|
---|
2418 | }
|
---|
2419 | return rc;
|
---|
2420 | }
|
---|
2421 |
|
---|
2422 |
|
---|
2423 | /**
|
---|
2424 | * Ram range flags and bits for older versions of the saved state.
|
---|
2425 | *
|
---|
2426 | * @returns VBox status code.
|
---|
2427 | *
|
---|
2428 | * @param pVM The cross context VM structure.
|
---|
2429 | * @param pSSM The SSM handle.
|
---|
2430 | * @param uVersion The saved state version.
|
---|
2431 | */
|
---|
2432 | static int pgmR3LoadMemoryOld(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion)
|
---|
2433 | {
|
---|
2434 | /*
|
---|
2435 | * Ram range flags and bits.
|
---|
2436 | */
|
---|
2437 | uint32_t iSeqNo = 0;
|
---|
2438 | uint32_t const cRamRangeLookupEntries = RT_MIN(pVM->pgm.s.RamRangeUnion.cLookupEntries,
|
---|
2439 | RT_ELEMENTS(pVM->pgm.s.aRamRangeLookup));
|
---|
2440 | for (uint32_t idxLookup = 0; idxLookup < cRamRangeLookupEntries; idxLookup++)
|
---|
2441 | {
|
---|
2442 | uint32_t const idRamRange = PGMRAMRANGELOOKUPENTRY_GET_ID(pVM->pgm.s.aRamRangeLookup[idxLookup]);
|
---|
2443 | AssertContinue(idRamRange < RT_ELEMENTS(pVM->pgm.s.apRamRanges));
|
---|
2444 | PPGMRAMRANGE const pRam = pVM->pgm.s.apRamRanges[idRamRange];
|
---|
2445 | AssertContinue(pRam);
|
---|
2446 |
|
---|
2447 | /* Check the sequence number / separator. */
|
---|
2448 | uint32_t u32Sep;
|
---|
2449 | int rc = SSMR3GetU32(pSSM, &u32Sep);
|
---|
2450 | if (RT_FAILURE(rc))
|
---|
2451 | return rc;
|
---|
2452 | if (u32Sep == ~0U)
|
---|
2453 | break;
|
---|
2454 | if (u32Sep != iSeqNo)
|
---|
2455 | {
|
---|
2456 | AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
|
---|
2457 | return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
|
---|
2458 | }
|
---|
2459 | AssertLogRelReturn(pRam, VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2460 |
|
---|
2461 | /* Get the range details. */
|
---|
2462 | RTGCPHYS GCPhys;
|
---|
2463 | SSMR3GetGCPhys(pSSM, &GCPhys);
|
---|
2464 | RTGCPHYS GCPhysLast;
|
---|
2465 | SSMR3GetGCPhys(pSSM, &GCPhysLast);
|
---|
2466 | RTGCPHYS cb;
|
---|
2467 | SSMR3GetGCPhys(pSSM, &cb);
|
---|
2468 | uint8_t fHaveBits;
|
---|
2469 | rc = SSMR3GetU8(pSSM, &fHaveBits);
|
---|
2470 | if (RT_FAILURE(rc))
|
---|
2471 | return rc;
|
---|
2472 | if (fHaveBits & ~1)
|
---|
2473 | {
|
---|
2474 | AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
|
---|
2475 | return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
|
---|
2476 | }
|
---|
2477 | size_t cchDesc = 0;
|
---|
2478 | char szDesc[256];
|
---|
2479 | szDesc[0] = '\0';
|
---|
2480 | if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
|
---|
2481 | {
|
---|
2482 | rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
|
---|
2483 | if (RT_FAILURE(rc))
|
---|
2484 | return rc;
|
---|
2485 | /* Since we've modified the description strings in r45878, only compare
|
---|
2486 | them if the saved state is more recent. */
|
---|
2487 | if (uVersion != PGM_SAVED_STATE_VERSION_RR_DESC)
|
---|
2488 | cchDesc = strlen(szDesc);
|
---|
2489 | }
|
---|
2490 |
|
---|
2491 | /*
|
---|
2492 | * Match it up with the current range.
|
---|
2493 | *
|
---|
2494 | * Note there is a hack for dealing with the high BIOS mapping
|
---|
2495 | * in the old saved state format, this means we might not have
|
---|
2496 | * a 1:1 match on success.
|
---|
2497 | */
|
---|
2498 | if ( ( GCPhys != pRam->GCPhys
|
---|
2499 | || GCPhysLast != pRam->GCPhysLast
|
---|
2500 | || cb != pRam->cb
|
---|
2501 | || ( cchDesc
|
---|
2502 | && strcmp(szDesc, pRam->pszDesc)) )
|
---|
2503 | /* Hack for PDMDevHlpPhysReserve(pDevIns, 0xfff80000, 0x80000, "High ROM Region"); */
|
---|
2504 | && ( uVersion != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE
|
---|
2505 | || GCPhys != UINT32_C(0xfff80000)
|
---|
2506 | || GCPhysLast != UINT32_C(0xffffffff)
|
---|
2507 | || pRam->GCPhysLast != GCPhysLast
|
---|
2508 | || pRam->GCPhys < GCPhys
|
---|
2509 | || !fHaveBits)
|
---|
2510 | )
|
---|
2511 | {
|
---|
2512 | LogRel(("Ram range: %RGp-%RGp %RGp bytes %s %s\n"
|
---|
2513 | "State : %RGp-%RGp %RGp bytes %s %s\n",
|
---|
2514 | pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pbR3 ? "bits" : "nobits", pRam->pszDesc,
|
---|
2515 | GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits", szDesc));
|
---|
2516 | /*
|
---|
2517 | * If we're loading a state for debugging purpose, don't make a fuss if
|
---|
2518 | * the MMIO and ROM stuff isn't 100% right, just skip the mismatches.
|
---|
2519 | */
|
---|
2520 | if ( SSMR3HandleGetAfter(pSSM) != SSMAFTER_DEBUG_IT
|
---|
2521 | || GCPhys < 8 * _1M)
|
---|
2522 | return SSMR3SetCfgError(pSSM, RT_SRC_POS,
|
---|
2523 | N_("RAM range mismatch; saved={%RGp-%RGp %RGp bytes %s %s} config={%RGp-%RGp %RGp bytes %s %s}"),
|
---|
2524 | GCPhys, GCPhysLast, cb, fHaveBits ? "bits" : "nobits", szDesc,
|
---|
2525 | pRam->GCPhys, pRam->GCPhysLast, pRam->cb, pRam->pbR3 ? "bits" : "nobits", pRam->pszDesc);
|
---|
2526 |
|
---|
2527 | AssertMsgFailed(("debug skipping not implemented, sorry\n"));
|
---|
2528 | iSeqNo++;
|
---|
2529 | continue;
|
---|
2530 | }
|
---|
2531 |
|
---|
2532 | uint32_t cPages = (GCPhysLast - GCPhys + 1) >> GUEST_PAGE_SHIFT;
|
---|
2533 | if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
|
---|
2534 | {
|
---|
2535 | /*
|
---|
2536 | * Load the pages one by one.
|
---|
2537 | */
|
---|
2538 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
2539 | {
|
---|
2540 | RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT) + pRam->GCPhys;
|
---|
2541 | PPGMPAGE pPage = &pRam->aPages[iPage];
|
---|
2542 | uint8_t uOldType;
|
---|
2543 | rc = SSMR3GetU8(pSSM, &uOldType);
|
---|
2544 | AssertLogRelMsgRCReturn(rc, ("pPage=%R[pgmpage] iPage=%#x GCPhysPage=%#x %s\n", pPage, iPage, GCPhysPage, pRam->pszDesc), rc);
|
---|
2545 | if (uOldType == PGMPAGETYPE_OLD_ROM_SHADOW)
|
---|
2546 | rc = pgmR3LoadShadowedRomPageOld(pVM, pSSM, pPage, GCPhysPage, pRam);
|
---|
2547 | else
|
---|
2548 | rc = pgmR3LoadPageOld(pVM, pSSM, uOldType, pPage, GCPhysPage, pRam);
|
---|
2549 | AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
|
---|
2550 | }
|
---|
2551 | }
|
---|
2552 | else
|
---|
2553 | {
|
---|
2554 | /*
|
---|
2555 | * Old format.
|
---|
2556 | */
|
---|
2557 |
|
---|
2558 | /* Of the page flags, pick up MMIO2 and ROM/RESERVED for the !fHaveBits case.
|
---|
2559 | The rest is generally irrelevant and wrong since the stuff have to match registrations. */
|
---|
2560 | uint32_t fFlags = 0;
|
---|
2561 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
2562 | {
|
---|
2563 | uint16_t u16Flags;
|
---|
2564 | rc = SSMR3GetU16(pSSM, &u16Flags);
|
---|
2565 | AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
|
---|
2566 | fFlags |= u16Flags;
|
---|
2567 | }
|
---|
2568 |
|
---|
2569 | /* Load the bits */
|
---|
2570 | if ( !fHaveBits
|
---|
2571 | && GCPhysLast < UINT32_C(0xe0000000))
|
---|
2572 | {
|
---|
2573 | /*
|
---|
2574 | * Dynamic chunks.
|
---|
2575 | */
|
---|
2576 | const uint32_t cPagesInChunk = (1*1024*1024) >> GUEST_PAGE_SHIFT;
|
---|
2577 | AssertLogRelMsgReturn(cPages % cPagesInChunk == 0,
|
---|
2578 | ("cPages=%#x cPagesInChunk=%#x GCPhys=%RGp %s\n", cPages, cPagesInChunk, pRam->GCPhys, pRam->pszDesc),
|
---|
2579 | VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2580 |
|
---|
2581 | for (uint32_t iPage = 0; iPage < cPages; /* incremented by inner loop */ )
|
---|
2582 | {
|
---|
2583 | uint8_t fPresent;
|
---|
2584 | rc = SSMR3GetU8(pSSM, &fPresent);
|
---|
2585 | AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
|
---|
2586 | AssertLogRelMsgReturn(fPresent == (uint8_t)true || fPresent == (uint8_t)false,
|
---|
2587 | ("fPresent=%#x iPage=%#x GCPhys=%#x %s\n", fPresent, iPage, pRam->GCPhys, pRam->pszDesc),
|
---|
2588 | VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2589 |
|
---|
2590 | for (uint32_t iChunkPage = 0; iChunkPage < cPagesInChunk; iChunkPage++, iPage++)
|
---|
2591 | {
|
---|
2592 | RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT) + pRam->GCPhys;
|
---|
2593 | PPGMPAGE pPage = &pRam->aPages[iPage];
|
---|
2594 | if (fPresent)
|
---|
2595 | {
|
---|
2596 | if ( PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_MMIO
|
---|
2597 | || PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_SPECIAL_ALIAS_MMIO)
|
---|
2598 | rc = pgmR3LoadPageToDevNullOld(pSSM);
|
---|
2599 | else
|
---|
2600 | rc = pgmR3LoadPageBitsOld(pVM, pSSM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
|
---|
2601 | }
|
---|
2602 | else
|
---|
2603 | rc = pgmR3LoadPageZeroOld(pVM, PGMPAGETYPE_INVALID, pPage, GCPhysPage, pRam);
|
---|
2604 | AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhysPage=%#x %s\n", rc, iPage, GCPhysPage, pRam->pszDesc), rc);
|
---|
2605 | }
|
---|
2606 | }
|
---|
2607 | }
|
---|
2608 | else if (pRam->pbR3)
|
---|
2609 | {
|
---|
2610 | /*
|
---|
2611 | * MMIO2.
|
---|
2612 | */
|
---|
2613 | AssertLogRelMsgReturn((fFlags & 0x0f) == RT_BIT(3) /*MM_RAM_FLAGS_MMIO2*/,
|
---|
2614 | ("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
|
---|
2615 | VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2616 | AssertLogRelMsgReturn(pRam->pbR3,
|
---|
2617 | ("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc),
|
---|
2618 | VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2619 |
|
---|
2620 | rc = SSMR3GetMem(pSSM, pRam->pbR3, pRam->cb);
|
---|
2621 | AssertLogRelMsgRCReturn(rc, ("GCPhys=%#x %s\n", pRam->GCPhys, pRam->pszDesc), rc);
|
---|
2622 | }
|
---|
2623 | else if (GCPhysLast < UINT32_C(0xfff80000))
|
---|
2624 | {
|
---|
2625 | /*
|
---|
2626 | * PCI MMIO, no pages saved.
|
---|
2627 | */
|
---|
2628 | }
|
---|
2629 | else
|
---|
2630 | {
|
---|
2631 | /*
|
---|
2632 | * Load the 0xfff80000..0xffffffff BIOS range.
|
---|
2633 | * It starts with X reserved pages that we have to skip over since
|
---|
2634 | * the RAMRANGE create by the new code won't include those.
|
---|
2635 | */
|
---|
2636 | AssertLogRelMsgReturn( !(fFlags & RT_BIT(3) /*MM_RAM_FLAGS_MMIO2*/)
|
---|
2637 | && (fFlags & RT_BIT(0) /*MM_RAM_FLAGS_RESERVED*/),
|
---|
2638 | ("fFlags=%#x GCPhys=%#x %s\n", fFlags, pRam->GCPhys, pRam->pszDesc),
|
---|
2639 | VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2640 | AssertLogRelMsgReturn(GCPhys == UINT32_C(0xfff80000),
|
---|
2641 | ("GCPhys=%RGp pRamRange{GCPhys=%#x %s}\n", GCPhys, pRam->GCPhys, pRam->pszDesc),
|
---|
2642 | VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2643 |
|
---|
2644 | /* Skip wasted reserved pages before the ROM. */
|
---|
2645 | while (GCPhys < pRam->GCPhys)
|
---|
2646 | {
|
---|
2647 | rc = pgmR3LoadPageToDevNullOld(pSSM);
|
---|
2648 | AssertLogRelRCReturn(rc, rc);
|
---|
2649 | GCPhys += GUEST_PAGE_SIZE;
|
---|
2650 | }
|
---|
2651 |
|
---|
2652 | /* Load the bios pages. */
|
---|
2653 | cPages = pRam->cb >> GUEST_PAGE_SHIFT;
|
---|
2654 | for (uint32_t iPage = 0; iPage < cPages; iPage++)
|
---|
2655 | {
|
---|
2656 | RTGCPHYS const GCPhysPage = ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT) + pRam->GCPhys;
|
---|
2657 | PPGMPAGE pPage = &pRam->aPages[iPage];
|
---|
2658 |
|
---|
2659 | AssertLogRelMsgReturn(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM,
|
---|
2660 | ("GCPhys=%RGp pPage=%R[pgmpage]\n", GCPhys, GCPhys),
|
---|
2661 | VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2662 | rc = pgmR3LoadPageBitsOld(pVM, pSSM, PGMPAGETYPE_ROM, pPage, GCPhysPage, pRam);
|
---|
2663 | AssertLogRelMsgRCReturn(rc, ("rc=%Rrc iPage=%#x GCPhys=%#x %s\n", rc, iPage, pRam->GCPhys, pRam->pszDesc), rc);
|
---|
2664 | }
|
---|
2665 | }
|
---|
2666 | }
|
---|
2667 |
|
---|
2668 | iSeqNo++;
|
---|
2669 | }
|
---|
2670 |
|
---|
2671 | return VINF_SUCCESS;
|
---|
2672 | }
|
---|
2673 |
|
---|
2674 |
|
---|
2675 | /**
|
---|
2676 | * Worker for pgmR3Load and pgmR3LoadLocked.
|
---|
2677 | *
|
---|
2678 | * @returns VBox status code.
|
---|
2679 | *
|
---|
2680 | * @param pVM The cross context VM structure.
|
---|
2681 | * @param pSSM The SSM handle.
|
---|
2682 | * @param uVersion The PGM saved state unit version.
|
---|
2683 | * @param uPass The pass number.
|
---|
2684 | *
|
---|
2685 | * @todo This needs splitting up if more record types or code twists are
|
---|
2686 | * added...
|
---|
2687 | */
|
---|
2688 | static int pgmR3LoadMemory(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
|
---|
2689 | {
|
---|
2690 | NOREF(uPass);
|
---|
2691 |
|
---|
2692 | /*
|
---|
2693 | * Process page records until we hit the terminator.
|
---|
2694 | */
|
---|
2695 | RTGCPHYS GCPhys = NIL_RTGCPHYS;
|
---|
2696 | PPGMRAMRANGE pRamHint = NULL;
|
---|
2697 | uint8_t id = UINT8_MAX;
|
---|
2698 | uint32_t iPage = UINT32_MAX - 10;
|
---|
2699 | PPGMROMRANGE pRom = NULL;
|
---|
2700 | PPGMREGMMIO2RANGE pRegMmio2 = NULL;
|
---|
2701 | PPGMRAMRANGE pMmio2RamRange = NULL;
|
---|
2702 |
|
---|
2703 | /*
|
---|
2704 | * We batch up pages that should be freed instead of calling GMM for
|
---|
2705 | * each and every one of them. Note that we'll lose the pages in most
|
---|
2706 | * failure paths - this should probably be addressed one day.
|
---|
2707 | */
|
---|
2708 | uint32_t cPendingPages = 0;
|
---|
2709 | PGMMFREEPAGESREQ pReq;
|
---|
2710 | int rc = GMMR3FreePagesPrepare(pVM, &pReq, 128 /* batch size */, GMMACCOUNT_BASE);
|
---|
2711 | AssertLogRelRCReturn(rc, rc);
|
---|
2712 |
|
---|
2713 | for (;;)
|
---|
2714 | {
|
---|
2715 | /*
|
---|
2716 | * Get the record type and flags.
|
---|
2717 | */
|
---|
2718 | uint8_t u8;
|
---|
2719 | rc = SSMR3GetU8(pSSM, &u8);
|
---|
2720 | if (RT_FAILURE(rc))
|
---|
2721 | return rc;
|
---|
2722 | if (u8 == PGM_STATE_REC_END)
|
---|
2723 | {
|
---|
2724 | /*
|
---|
2725 | * Finish off any pages pending freeing.
|
---|
2726 | */
|
---|
2727 | if (cPendingPages)
|
---|
2728 | {
|
---|
2729 | Log(("pgmR3LoadMemory: GMMR3FreePagesPerform pVM=%p cPendingPages=%u\n", pVM, cPendingPages));
|
---|
2730 | rc = GMMR3FreePagesPerform(pVM, pReq, cPendingPages);
|
---|
2731 | AssertLogRelRCReturn(rc, rc);
|
---|
2732 | }
|
---|
2733 | GMMR3FreePagesCleanup(pReq);
|
---|
2734 | return VINF_SUCCESS;
|
---|
2735 | }
|
---|
2736 | AssertLogRelMsgReturn((u8 & ~PGM_STATE_REC_FLAG_ADDR) <= PGM_STATE_REC_LAST, ("%#x\n", u8), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2737 | switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
|
---|
2738 | {
|
---|
2739 | /*
|
---|
2740 | * RAM page.
|
---|
2741 | */
|
---|
2742 | case PGM_STATE_REC_RAM_ZERO:
|
---|
2743 | case PGM_STATE_REC_RAM_RAW:
|
---|
2744 | case PGM_STATE_REC_RAM_BALLOONED:
|
---|
2745 | {
|
---|
2746 | /*
|
---|
2747 | * Get the address and resolve it into a page descriptor.
|
---|
2748 | */
|
---|
2749 | if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
|
---|
2750 | GCPhys += GUEST_PAGE_SIZE;
|
---|
2751 | else
|
---|
2752 | {
|
---|
2753 | rc = SSMR3GetGCPhys(pSSM, &GCPhys);
|
---|
2754 | if (RT_FAILURE(rc))
|
---|
2755 | return rc;
|
---|
2756 | }
|
---|
2757 | AssertLogRelMsgReturn(!(GCPhys & GUEST_PAGE_OFFSET_MASK), ("%RGp\n", GCPhys), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
2758 |
|
---|
2759 | PPGMPAGE pPage;
|
---|
2760 | rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pPage, &pRamHint);
|
---|
2761 | if (RT_SUCCESS(rc))
|
---|
2762 | { /* likely */ }
|
---|
2763 | else if ( rc == VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS
|
---|
2764 | && GCPhys < _1M
|
---|
2765 | && GCPhys >= 640U*_1K
|
---|
2766 | && (u8 & ~PGM_STATE_REC_FLAG_ADDR) == PGM_STATE_REC_RAM_ZERO)
|
---|
2767 | {
|
---|
2768 | rc = VINF_SUCCESS; /* We've kicked out unused pages between 640K and 1MB, but older states may include them. */
|
---|
2769 | id = UINT8_MAX;
|
---|
2770 | break;
|
---|
2771 | }
|
---|
2772 | else
|
---|
2773 | AssertLogRelMsgFailedReturn(("rc=%Rrc %RGp u8=%#x\n", rc, GCPhys, u8), rc);
|
---|
2774 |
|
---|
2775 | /*
|
---|
2776 | * Take action according to the record type.
|
---|
2777 | */
|
---|
2778 | switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
|
---|
2779 | {
|
---|
2780 | case PGM_STATE_REC_RAM_ZERO:
|
---|
2781 | {
|
---|
2782 | if (PGM_PAGE_IS_ZERO(pPage))
|
---|
2783 | break;
|
---|
2784 |
|
---|
2785 | /* Ballooned pages must be unmarked (live snapshot and
|
---|
2786 | teleportation scenarios). */
|
---|
2787 | if (PGM_PAGE_IS_BALLOONED(pPage))
|
---|
2788 | {
|
---|
2789 | Assert(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM);
|
---|
2790 | if (uVersion == PGM_SAVED_STATE_VERSION_BALLOON_BROKEN)
|
---|
2791 | break;
|
---|
2792 | PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_ZERO);
|
---|
2793 | break;
|
---|
2794 | }
|
---|
2795 |
|
---|
2796 | AssertLogRelMsgReturn(PGM_PAGE_GET_STATE(pPage) == PGM_PAGE_STATE_ALLOCATED, ("GCPhys=%RGp %R[pgmpage]\n", GCPhys, pPage), VERR_PGM_UNEXPECTED_PAGE_STATE);
|
---|
2797 |
|
---|
2798 | /* If this is a ROM page, we must clear it and not try to
|
---|
2799 | * free it. Ditto if the VM is using RamPreAlloc (see
|
---|
2800 | * @bugref{6318}). */
|
---|
2801 | if ( PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM
|
---|
2802 | || PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_ROM_SHADOW
|
---|
2803 | || PGM_IS_IN_NEM_MODE(pVM)
|
---|
2804 | || pVM->pgm.s.fRamPreAlloc)
|
---|
2805 | {
|
---|
2806 | PGMPAGEMAPLOCK PgMpLck;
|
---|
2807 | void *pvDstPage;
|
---|
2808 | rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvDstPage, &PgMpLck);
|
---|
2809 | AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp %R[pgmpage] rc=%Rrc\n", GCPhys, pPage, rc), rc);
|
---|
2810 |
|
---|
2811 | RT_BZERO(pvDstPage, GUEST_PAGE_SIZE);
|
---|
2812 | pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
|
---|
2813 | }
|
---|
2814 | /* Free it only if it's not part of a previously
|
---|
2815 | allocated large page (no need to clear the page). */
|
---|
2816 | else if ( PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE
|
---|
2817 | && PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE_DISABLED)
|
---|
2818 | {
|
---|
2819 | rc = pgmPhysFreePage(pVM, pReq, &cPendingPages, pPage, GCPhys, (PGMPAGETYPE)PGM_PAGE_GET_TYPE(pPage));
|
---|
2820 | AssertRCReturn(rc, rc);
|
---|
2821 | }
|
---|
2822 | /** @todo handle large pages (see @bugref{5545}) */
|
---|
2823 | break;
|
---|
2824 | }
|
---|
2825 |
|
---|
2826 | case PGM_STATE_REC_RAM_BALLOONED:
|
---|
2827 | {
|
---|
2828 | Assert(PGM_PAGE_GET_TYPE(pPage) == PGMPAGETYPE_RAM);
|
---|
2829 | if (PGM_PAGE_IS_BALLOONED(pPage))
|
---|
2830 | break;
|
---|
2831 |
|
---|
2832 | /* We don't map ballooned pages in our shadow page tables, let's
|
---|
2833 | just free it if allocated and mark as ballooned. See @bugref{5515}. */
|
---|
2834 | if (PGM_PAGE_IS_ALLOCATED(pPage))
|
---|
2835 | {
|
---|
2836 | /** @todo handle large pages + ballooning when it works. (see @bugref{5515},
|
---|
2837 | * @bugref{5545}). */
|
---|
2838 | AssertLogRelMsgReturn( PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE
|
---|
2839 | && PGM_PAGE_GET_PDE_TYPE(pPage) != PGM_PAGE_PDE_TYPE_PDE_DISABLED,
|
---|
2840 | ("GCPhys=%RGp %R[pgmpage]\n", GCPhys, pPage), VERR_PGM_LOAD_UNEXPECTED_PAGE_TYPE);
|
---|
2841 |
|
---|
2842 | rc = pgmPhysFreePage(pVM, pReq, &cPendingPages, pPage, GCPhys, (PGMPAGETYPE)PGM_PAGE_GET_TYPE(pPage));
|
---|
2843 | AssertRCReturn(rc, rc);
|
---|
2844 | }
|
---|
2845 | Assert(PGM_PAGE_IS_ZERO(pPage));
|
---|
2846 | PGM_PAGE_SET_STATE(pVM, pPage, PGM_PAGE_STATE_BALLOONED);
|
---|
2847 | break;
|
---|
2848 | }
|
---|
2849 |
|
---|
2850 | case PGM_STATE_REC_RAM_RAW:
|
---|
2851 | {
|
---|
2852 | PGMPAGEMAPLOCK PgMpLck;
|
---|
2853 | void *pvDstPage;
|
---|
2854 | rc = pgmPhysGCPhys2CCPtrInternal(pVM, pPage, GCPhys, &pvDstPage, &PgMpLck);
|
---|
2855 | AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp %R[pgmpage] rc=%Rrc\n", GCPhys, pPage, rc), rc);
|
---|
2856 | rc = SSMR3GetMem(pSSM, pvDstPage, GUEST_PAGE_SIZE);
|
---|
2857 | pgmPhysReleaseInternalPageMappingLock(pVM, &PgMpLck);
|
---|
2858 | if (RT_FAILURE(rc))
|
---|
2859 | return rc;
|
---|
2860 | break;
|
---|
2861 | }
|
---|
2862 |
|
---|
2863 | default:
|
---|
2864 | AssertMsgFailedReturn(("%#x\n", u8), VERR_PGM_SAVED_REC_TYPE);
|
---|
2865 | }
|
---|
2866 | id = UINT8_MAX;
|
---|
2867 | break;
|
---|
2868 | }
|
---|
2869 |
|
---|
2870 | /*
|
---|
2871 | * MMIO2 page.
|
---|
2872 | */
|
---|
2873 | case PGM_STATE_REC_MMIO2_RAW:
|
---|
2874 | case PGM_STATE_REC_MMIO2_ZERO:
|
---|
2875 | {
|
---|
2876 | /*
|
---|
2877 | * Get the ID + page number and resolved that into a MMIO2 page.
|
---|
2878 | */
|
---|
2879 | if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
|
---|
2880 | iPage++;
|
---|
2881 | else
|
---|
2882 | {
|
---|
2883 | SSMR3GetU8(pSSM, &id);
|
---|
2884 | rc = SSMR3GetU32(pSSM, &iPage);
|
---|
2885 | if (RT_FAILURE(rc))
|
---|
2886 | return rc;
|
---|
2887 | }
|
---|
2888 | if ( !pRegMmio2
|
---|
2889 | || pRegMmio2->idSavedState != id)
|
---|
2890 | {
|
---|
2891 | pMmio2RamRange = NULL;
|
---|
2892 | uint32_t const cMmio2Ranges = RT_MIN(pVM->pgm.s.cMmio2Ranges, RT_ELEMENTS(pVM->pgm.s.aMmio2Ranges));
|
---|
2893 | for (uint32_t idx = 0; idx < cMmio2Ranges; idx++)
|
---|
2894 | if (pVM->pgm.s.aMmio2Ranges[idx].idSavedState == id)
|
---|
2895 | {
|
---|
2896 | pRegMmio2 = &pVM->pgm.s.aMmio2Ranges[idx];
|
---|
2897 | pMmio2RamRange = pVM->pgm.s.apMmio2RamRanges[idx];
|
---|
2898 | break;
|
---|
2899 | }
|
---|
2900 | AssertLogRelMsgReturn(pRegMmio2 && pMmio2RamRange, ("id=%#u iPage=%#x\n", id, iPage),
|
---|
2901 | VERR_PGM_SAVED_MMIO2_RANGE_NOT_FOUND);
|
---|
2902 | }
|
---|
2903 | AssertLogRelMsgReturn(iPage < (pMmio2RamRange->cb >> GUEST_PAGE_SHIFT),
|
---|
2904 | ("iPage=%#x cb=%RGp %s\n", iPage, pMmio2RamRange->cb, pMmio2RamRange->pszDesc),
|
---|
2905 | VERR_PGM_SAVED_MMIO2_PAGE_NOT_FOUND);
|
---|
2906 | void * const pvDstPage = &pMmio2RamRange->pbR3[(size_t)iPage << GUEST_PAGE_SHIFT];
|
---|
2907 |
|
---|
2908 | /*
|
---|
2909 | * Load the page bits.
|
---|
2910 | */
|
---|
2911 | if ((u8 & ~PGM_STATE_REC_FLAG_ADDR) == PGM_STATE_REC_MMIO2_ZERO)
|
---|
2912 | RT_BZERO(pvDstPage, GUEST_PAGE_SIZE);
|
---|
2913 | else
|
---|
2914 | {
|
---|
2915 | rc = SSMR3GetMem(pSSM, pvDstPage, GUEST_PAGE_SIZE);
|
---|
2916 | if (RT_FAILURE(rc))
|
---|
2917 | return rc;
|
---|
2918 | }
|
---|
2919 | GCPhys = NIL_RTGCPHYS;
|
---|
2920 | break;
|
---|
2921 | }
|
---|
2922 |
|
---|
2923 | /*
|
---|
2924 | * ROM pages.
|
---|
2925 | */
|
---|
2926 | case PGM_STATE_REC_ROM_VIRGIN:
|
---|
2927 | case PGM_STATE_REC_ROM_SHW_RAW:
|
---|
2928 | case PGM_STATE_REC_ROM_SHW_ZERO:
|
---|
2929 | case PGM_STATE_REC_ROM_PROT:
|
---|
2930 | {
|
---|
2931 | /*
|
---|
2932 | * Get the ID + page number and resolved that into a ROM page descriptor.
|
---|
2933 | */
|
---|
2934 | if (!(u8 & PGM_STATE_REC_FLAG_ADDR))
|
---|
2935 | iPage++;
|
---|
2936 | else
|
---|
2937 | {
|
---|
2938 | SSMR3GetU8(pSSM, &id);
|
---|
2939 | rc = SSMR3GetU32(pSSM, &iPage);
|
---|
2940 | if (RT_FAILURE(rc))
|
---|
2941 | return rc;
|
---|
2942 | }
|
---|
2943 | if ( !pRom
|
---|
2944 | || pRom->idSavedState != id)
|
---|
2945 | {
|
---|
2946 | uint32_t const cRomRanges = RT_MIN(pVM->pgm.s.cRomRanges, RT_ELEMENTS(pVM->pgm.s.apRomRanges));
|
---|
2947 | uint32_t idx;
|
---|
2948 | for (idx = 0; idx < cRomRanges; idx++)
|
---|
2949 | {
|
---|
2950 | pRom = pVM->pgm.s.apRomRanges[idx];
|
---|
2951 | if (pRom->idSavedState == id)
|
---|
2952 | break;
|
---|
2953 | }
|
---|
2954 | AssertLogRelMsgReturn(idx < cRomRanges, ("id=%#u iPage=%#x\n", id, iPage), VERR_PGM_SAVED_ROM_RANGE_NOT_FOUND);
|
---|
2955 | }
|
---|
2956 | AssertLogRelMsgReturn(iPage < (pRom->cb >> GUEST_PAGE_SHIFT),
|
---|
2957 | ("iPage=%#x cb=%RGp %s\n", iPage, pRom->cb, pRom->pszDesc),
|
---|
2958 | VERR_PGM_SAVED_ROM_PAGE_NOT_FOUND);
|
---|
2959 | PPGMROMPAGE pRomPage = &pRom->aPages[iPage];
|
---|
2960 | GCPhys = pRom->GCPhys + ((RTGCPHYS)iPage << GUEST_PAGE_SHIFT);
|
---|
2961 |
|
---|
2962 | /*
|
---|
2963 | * Get and set the protection.
|
---|
2964 | */
|
---|
2965 | uint8_t u8Prot;
|
---|
2966 | rc = SSMR3GetU8(pSSM, &u8Prot);
|
---|
2967 | if (RT_FAILURE(rc))
|
---|
2968 | return rc;
|
---|
2969 | PGMROMPROT enmProt = (PGMROMPROT)u8Prot;
|
---|
2970 | AssertLogRelMsgReturn(enmProt > PGMROMPROT_INVALID && enmProt < PGMROMPROT_END, ("GCPhys=%RGp enmProt=%d\n", GCPhys, enmProt), VERR_PGM_SAVED_ROM_PAGE_PROT);
|
---|
2971 |
|
---|
2972 | if (enmProt != pRomPage->enmProt)
|
---|
2973 | {
|
---|
2974 | if (RT_UNLIKELY(!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)))
|
---|
2975 | return SSMR3SetCfgError(pSSM, RT_SRC_POS,
|
---|
2976 | N_("Protection change of unshadowed ROM page: GCPhys=%RGp enmProt=%d %s"),
|
---|
2977 | GCPhys, enmProt, pRom->pszDesc);
|
---|
2978 | rc = PGMR3PhysRomProtect(pVM, GCPhys, GUEST_PAGE_SIZE, enmProt);
|
---|
2979 | AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp rc=%Rrc\n", GCPhys, rc), rc);
|
---|
2980 | AssertLogRelReturn(pRomPage->enmProt == enmProt, VERR_PGM_SAVED_ROM_PAGE_PROT);
|
---|
2981 | }
|
---|
2982 | if ((u8 & ~PGM_STATE_REC_FLAG_ADDR) == PGM_STATE_REC_ROM_PROT)
|
---|
2983 | break; /* done */
|
---|
2984 |
|
---|
2985 | /*
|
---|
2986 | * Get the right page descriptor.
|
---|
2987 | */
|
---|
2988 | PPGMPAGE pRealPage;
|
---|
2989 | switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
|
---|
2990 | {
|
---|
2991 | case PGM_STATE_REC_ROM_VIRGIN:
|
---|
2992 | if (!PGMROMPROT_IS_ROM(enmProt))
|
---|
2993 | pRealPage = &pRomPage->Virgin;
|
---|
2994 | else
|
---|
2995 | pRealPage = NULL;
|
---|
2996 | break;
|
---|
2997 |
|
---|
2998 | case PGM_STATE_REC_ROM_SHW_RAW:
|
---|
2999 | case PGM_STATE_REC_ROM_SHW_ZERO:
|
---|
3000 | if (RT_UNLIKELY(!(pRom->fFlags & PGMPHYS_ROM_FLAGS_SHADOWED)))
|
---|
3001 | return SSMR3SetCfgError(pSSM, RT_SRC_POS,
|
---|
3002 | N_("Shadowed / non-shadowed page type mismatch: GCPhys=%RGp enmProt=%d %s"),
|
---|
3003 | GCPhys, enmProt, pRom->pszDesc);
|
---|
3004 | if (PGMROMPROT_IS_ROM(enmProt))
|
---|
3005 | pRealPage = &pRomPage->Shadow;
|
---|
3006 | else
|
---|
3007 | pRealPage = NULL;
|
---|
3008 | break;
|
---|
3009 |
|
---|
3010 | default: AssertLogRelFailedReturn(VERR_IPE_NOT_REACHED_DEFAULT_CASE); /* shut up gcc */
|
---|
3011 | }
|
---|
3012 | #ifdef VBOX_WITH_PGM_NEM_MODE
|
---|
3013 | bool const fAltPage = pRealPage != NULL;
|
---|
3014 | #endif
|
---|
3015 | if (!pRealPage)
|
---|
3016 | {
|
---|
3017 | rc = pgmPhysGetPageWithHintEx(pVM, GCPhys, &pRealPage, &pRamHint);
|
---|
3018 | AssertLogRelMsgRCReturn(rc, ("rc=%Rrc %RGp\n", rc, GCPhys), rc);
|
---|
3019 | }
|
---|
3020 |
|
---|
3021 | /*
|
---|
3022 | * Make it writable and map it (if necessary).
|
---|
3023 | */
|
---|
3024 | void *pvDstPage = NULL;
|
---|
3025 | switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
|
---|
3026 | {
|
---|
3027 | case PGM_STATE_REC_ROM_SHW_ZERO:
|
---|
3028 | if ( PGM_PAGE_IS_ZERO(pRealPage)
|
---|
3029 | || PGM_PAGE_IS_BALLOONED(pRealPage))
|
---|
3030 | break;
|
---|
3031 | /** @todo implement zero page replacing. */
|
---|
3032 | RT_FALL_THRU();
|
---|
3033 | case PGM_STATE_REC_ROM_VIRGIN:
|
---|
3034 | case PGM_STATE_REC_ROM_SHW_RAW:
|
---|
3035 | #ifdef VBOX_WITH_PGM_NEM_MODE
|
---|
3036 | if (fAltPage && PGM_IS_IN_NEM_MODE(pVM))
|
---|
3037 | pvDstPage = &pRom->pbR3Alternate[iPage << GUEST_PAGE_SHIFT];
|
---|
3038 | else
|
---|
3039 | #endif
|
---|
3040 | {
|
---|
3041 | rc = pgmPhysPageMakeWritableAndMap(pVM, pRealPage, GCPhys, &pvDstPage);
|
---|
3042 | AssertLogRelMsgRCReturn(rc, ("GCPhys=%RGp rc=%Rrc\n", GCPhys, rc), rc);
|
---|
3043 | }
|
---|
3044 | break;
|
---|
3045 | }
|
---|
3046 |
|
---|
3047 | /*
|
---|
3048 | * Load the bits.
|
---|
3049 | */
|
---|
3050 | switch (u8 & ~PGM_STATE_REC_FLAG_ADDR)
|
---|
3051 | {
|
---|
3052 | case PGM_STATE_REC_ROM_SHW_ZERO:
|
---|
3053 | if (pvDstPage)
|
---|
3054 | RT_BZERO(pvDstPage, GUEST_PAGE_SIZE);
|
---|
3055 | break;
|
---|
3056 |
|
---|
3057 | case PGM_STATE_REC_ROM_VIRGIN:
|
---|
3058 | case PGM_STATE_REC_ROM_SHW_RAW:
|
---|
3059 | rc = SSMR3GetMem(pSSM, pvDstPage, GUEST_PAGE_SIZE);
|
---|
3060 | if (RT_FAILURE(rc))
|
---|
3061 | return rc;
|
---|
3062 | break;
|
---|
3063 | }
|
---|
3064 | GCPhys = NIL_RTGCPHYS;
|
---|
3065 | break;
|
---|
3066 | }
|
---|
3067 |
|
---|
3068 | /*
|
---|
3069 | * Unknown type.
|
---|
3070 | */
|
---|
3071 | default:
|
---|
3072 | AssertLogRelMsgFailedReturn(("%#x\n", u8), VERR_PGM_SAVED_REC_TYPE);
|
---|
3073 | }
|
---|
3074 | } /* forever */
|
---|
3075 | }
|
---|
3076 |
|
---|
3077 |
|
---|
3078 | /**
|
---|
3079 | * Worker for pgmR3Load.
|
---|
3080 | *
|
---|
3081 | * @returns VBox status code.
|
---|
3082 | *
|
---|
3083 | * @param pVM The cross context VM structure.
|
---|
3084 | * @param pSSM The SSM handle.
|
---|
3085 | * @param uVersion The saved state version.
|
---|
3086 | */
|
---|
3087 | static int pgmR3LoadFinalLocked(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion)
|
---|
3088 | {
|
---|
3089 | PPGM pPGM = &pVM->pgm.s;
|
---|
3090 | int rc;
|
---|
3091 | uint32_t u32Sep;
|
---|
3092 |
|
---|
3093 | /*
|
---|
3094 | * Load basic data (required / unaffected by relocation).
|
---|
3095 | */
|
---|
3096 | if (uVersion >= PGM_SAVED_STATE_VERSION_3_0_0)
|
---|
3097 | {
|
---|
3098 | if (uVersion > PGM_SAVED_STATE_VERSION_PRE_BALLOON)
|
---|
3099 | rc = SSMR3GetStructEx(pSSM, pPGM, sizeof(*pPGM), 0 /*fFlags*/, &s_aPGMFields[0], NULL /*pvUser*/);
|
---|
3100 | else
|
---|
3101 | rc = SSMR3GetStructEx(pSSM, pPGM, sizeof(*pPGM), 0 /*fFlags*/, &s_aPGMFieldsPreBalloon[0], NULL /*pvUser*/);
|
---|
3102 |
|
---|
3103 | AssertLogRelRCReturn(rc, rc);
|
---|
3104 |
|
---|
3105 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
3106 | {
|
---|
3107 | if (uVersion > PGM_SAVED_STATE_VERSION_PRE_PAE)
|
---|
3108 | rc = SSMR3GetStruct(pSSM, &pVM->apCpusR3[i]->pgm.s, &s_aPGMCpuFields[0]);
|
---|
3109 | else
|
---|
3110 | rc = SSMR3GetStruct(pSSM, &pVM->apCpusR3[i]->pgm.s, &s_aPGMCpuFieldsPrePae[0]);
|
---|
3111 | AssertLogRelRCReturn(rc, rc);
|
---|
3112 | }
|
---|
3113 | }
|
---|
3114 | else if (uVersion >= PGM_SAVED_STATE_VERSION_RR_DESC)
|
---|
3115 | {
|
---|
3116 | AssertRelease(pVM->cCpus == 1);
|
---|
3117 |
|
---|
3118 | PGMOLD pgmOld;
|
---|
3119 | rc = SSMR3GetStruct(pSSM, &pgmOld, &s_aPGMFields_Old[0]);
|
---|
3120 | AssertLogRelRCReturn(rc, rc);
|
---|
3121 |
|
---|
3122 | PVMCPU pVCpu0 = pVM->apCpusR3[0];
|
---|
3123 | pVCpu0->pgm.s.fA20Enabled = pgmOld.fA20Enabled;
|
---|
3124 | pVCpu0->pgm.s.GCPhysA20Mask = pgmOld.GCPhysA20Mask;
|
---|
3125 | pVCpu0->pgm.s.enmGuestMode = pgmOld.enmGuestMode;
|
---|
3126 | }
|
---|
3127 | else
|
---|
3128 | {
|
---|
3129 | AssertRelease(pVM->cCpus == 1);
|
---|
3130 |
|
---|
3131 | SSMR3Skip(pSSM, sizeof(bool));
|
---|
3132 | RTGCPTR GCPtrIgn;
|
---|
3133 | SSMR3GetGCPtr(pSSM, &GCPtrIgn);
|
---|
3134 | SSMR3Skip(pSSM, sizeof(uint32_t));
|
---|
3135 |
|
---|
3136 | uint32_t cbRamSizeIgnored;
|
---|
3137 | rc = SSMR3GetU32(pSSM, &cbRamSizeIgnored);
|
---|
3138 | if (RT_FAILURE(rc))
|
---|
3139 | return rc;
|
---|
3140 | PVMCPU pVCpu0 = pVM->apCpusR3[0];
|
---|
3141 | SSMR3GetGCPhys(pSSM, &pVCpu0->pgm.s.GCPhysA20Mask);
|
---|
3142 |
|
---|
3143 | uint32_t u32 = 0;
|
---|
3144 | SSMR3GetUInt(pSSM, &u32);
|
---|
3145 | pVCpu0->pgm.s.fA20Enabled = !!u32;
|
---|
3146 | SSMR3GetUInt(pSSM, &pVCpu0->pgm.s.fSyncFlags);
|
---|
3147 | RTUINT uGuestMode;
|
---|
3148 | SSMR3GetUInt(pSSM, &uGuestMode);
|
---|
3149 | pVCpu0->pgm.s.enmGuestMode = (PGMMODE)uGuestMode;
|
---|
3150 |
|
---|
3151 | /* check separator. */
|
---|
3152 | SSMR3GetU32(pSSM, &u32Sep);
|
---|
3153 | if (RT_FAILURE(rc))
|
---|
3154 | return rc;
|
---|
3155 | if (u32Sep != (uint32_t)~0)
|
---|
3156 | {
|
---|
3157 | AssertMsgFailed(("u32Sep=%#x (first)\n", u32Sep));
|
---|
3158 | return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
|
---|
3159 | }
|
---|
3160 | }
|
---|
3161 |
|
---|
3162 | /*
|
---|
3163 | * Fix the A20 mask.
|
---|
3164 | */
|
---|
3165 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
3166 | {
|
---|
3167 | PVMCPU pVCpu = pVM->apCpusR3[i];
|
---|
3168 | pVCpu->pgm.s.GCPhysA20Mask = ~((RTGCPHYS)!pVCpu->pgm.s.fA20Enabled << 20);
|
---|
3169 | pgmR3RefreshShadowModeAfterA20Change(pVCpu);
|
---|
3170 | }
|
---|
3171 |
|
---|
3172 | /*
|
---|
3173 | * The guest mappings - skipped now, see re-fixation in the caller.
|
---|
3174 | */
|
---|
3175 | if (uVersion <= PGM_SAVED_STATE_VERSION_PRE_PAE)
|
---|
3176 | {
|
---|
3177 | for (uint32_t i = 0; ; i++)
|
---|
3178 | {
|
---|
3179 | rc = SSMR3GetU32(pSSM, &u32Sep); /* sequence number */
|
---|
3180 | if (RT_FAILURE(rc))
|
---|
3181 | return rc;
|
---|
3182 | if (u32Sep == ~0U)
|
---|
3183 | break;
|
---|
3184 | AssertMsgReturn(u32Sep == i, ("u32Sep=%#x i=%#x\n", u32Sep, i), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
|
---|
3185 |
|
---|
3186 | char szDesc[256];
|
---|
3187 | rc = SSMR3GetStrZ(pSSM, szDesc, sizeof(szDesc));
|
---|
3188 | if (RT_FAILURE(rc))
|
---|
3189 | return rc;
|
---|
3190 | RTGCPTR GCPtrIgnore;
|
---|
3191 | SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* GCPtr */
|
---|
3192 | rc = SSMR3GetGCPtr(pSSM, &GCPtrIgnore); /* cPTs */
|
---|
3193 | if (RT_FAILURE(rc))
|
---|
3194 | return rc;
|
---|
3195 | }
|
---|
3196 | }
|
---|
3197 |
|
---|
3198 | /*
|
---|
3199 | * Load the RAM contents.
|
---|
3200 | */
|
---|
3201 | if (uVersion > PGM_SAVED_STATE_VERSION_3_0_0)
|
---|
3202 | {
|
---|
3203 | if (!pVM->pgm.s.LiveSave.fActive)
|
---|
3204 | {
|
---|
3205 | if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
|
---|
3206 | {
|
---|
3207 | rc = pgmR3LoadRamConfig(pVM, pSSM);
|
---|
3208 | if (RT_FAILURE(rc))
|
---|
3209 | return rc;
|
---|
3210 | }
|
---|
3211 | rc = pgmR3LoadRomRanges(pVM, pSSM);
|
---|
3212 | if (RT_FAILURE(rc))
|
---|
3213 | return rc;
|
---|
3214 | rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
|
---|
3215 | if (RT_FAILURE(rc))
|
---|
3216 | return rc;
|
---|
3217 | }
|
---|
3218 |
|
---|
3219 | rc = pgmR3LoadMemory(pVM, pSSM, uVersion, SSM_PASS_FINAL);
|
---|
3220 | }
|
---|
3221 | else
|
---|
3222 | rc = pgmR3LoadMemoryOld(pVM, pSSM, uVersion);
|
---|
3223 |
|
---|
3224 | /* Refresh balloon accounting. */
|
---|
3225 | if (pVM->pgm.s.cBalloonedPages)
|
---|
3226 | {
|
---|
3227 | Log(("pgmR3LoadFinalLocked: pVM=%p cBalloonedPages=%#x\n", pVM, pVM->pgm.s.cBalloonedPages));
|
---|
3228 | rc = GMMR3BalloonedPages(pVM, GMMBALLOONACTION_INFLATE, pVM->pgm.s.cBalloonedPages);
|
---|
3229 | AssertRCReturn(rc, rc);
|
---|
3230 | }
|
---|
3231 | return rc;
|
---|
3232 | }
|
---|
3233 |
|
---|
3234 |
|
---|
3235 | /**
|
---|
3236 | * @callback_method_impl{FNSSMINTLOADEXEC}
|
---|
3237 | */
|
---|
3238 | static DECLCALLBACK(int) pgmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
|
---|
3239 | {
|
---|
3240 | int rc;
|
---|
3241 |
|
---|
3242 | /*
|
---|
3243 | * Validate version.
|
---|
3244 | */
|
---|
3245 | if ( ( uPass != SSM_PASS_FINAL
|
---|
3246 | && uVersion != PGM_SAVED_STATE_VERSION
|
---|
3247 | && uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
|
---|
3248 | && uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
|
---|
3249 | && uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
|
---|
3250 | && uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
|
---|
3251 | || ( uVersion != PGM_SAVED_STATE_VERSION
|
---|
3252 | && uVersion != PGM_SAVED_STATE_VERSION_PRE_PAE
|
---|
3253 | && uVersion != PGM_SAVED_STATE_VERSION_BALLOON_BROKEN
|
---|
3254 | && uVersion != PGM_SAVED_STATE_VERSION_PRE_BALLOON
|
---|
3255 | && uVersion != PGM_SAVED_STATE_VERSION_NO_RAM_CFG
|
---|
3256 | && uVersion != PGM_SAVED_STATE_VERSION_3_0_0
|
---|
3257 | && uVersion != PGM_SAVED_STATE_VERSION_2_2_2
|
---|
3258 | && uVersion != PGM_SAVED_STATE_VERSION_RR_DESC
|
---|
3259 | && uVersion != PGM_SAVED_STATE_VERSION_OLD_PHYS_CODE)
|
---|
3260 | )
|
---|
3261 | {
|
---|
3262 | AssertMsgFailed(("pgmR3Load: Invalid version uVersion=%d (current %d)!\n", uVersion, PGM_SAVED_STATE_VERSION));
|
---|
3263 | return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
|
---|
3264 | }
|
---|
3265 |
|
---|
3266 | /*
|
---|
3267 | * Do the loading while owning the lock because a bunch of the functions
|
---|
3268 | * we're using requires this.
|
---|
3269 | */
|
---|
3270 | if (uPass != SSM_PASS_FINAL)
|
---|
3271 | {
|
---|
3272 | PGM_LOCK_VOID(pVM);
|
---|
3273 | if (uPass != 0)
|
---|
3274 | rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
|
---|
3275 | else
|
---|
3276 | {
|
---|
3277 | pVM->pgm.s.LiveSave.fActive = true;
|
---|
3278 | if (uVersion > PGM_SAVED_STATE_VERSION_NO_RAM_CFG)
|
---|
3279 | rc = pgmR3LoadRamConfig(pVM, pSSM);
|
---|
3280 | else
|
---|
3281 | rc = VINF_SUCCESS;
|
---|
3282 | if (RT_SUCCESS(rc))
|
---|
3283 | rc = pgmR3LoadRomRanges(pVM, pSSM);
|
---|
3284 | if (RT_SUCCESS(rc))
|
---|
3285 | rc = pgmR3LoadMmio2Ranges(pVM, pSSM);
|
---|
3286 | if (RT_SUCCESS(rc))
|
---|
3287 | rc = pgmR3LoadMemory(pVM, pSSM, uVersion, uPass);
|
---|
3288 | }
|
---|
3289 | PGM_UNLOCK(pVM);
|
---|
3290 | }
|
---|
3291 | else
|
---|
3292 | {
|
---|
3293 | PGM_LOCK_VOID(pVM);
|
---|
3294 | rc = pgmR3LoadFinalLocked(pVM, pSSM, uVersion);
|
---|
3295 | pVM->pgm.s.LiveSave.fActive = false;
|
---|
3296 | PGM_UNLOCK(pVM);
|
---|
3297 | if (RT_SUCCESS(rc))
|
---|
3298 | {
|
---|
3299 | /*
|
---|
3300 | * We require a full resync now.
|
---|
3301 | */
|
---|
3302 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
3303 | {
|
---|
3304 | PVMCPU pVCpu = pVM->apCpusR3[i];
|
---|
3305 | VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL);
|
---|
3306 | VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3);
|
---|
3307 | /** @todo For guest PAE, we might get the wrong
|
---|
3308 | * aGCPhysGstPaePDs values now. We should used the
|
---|
3309 | * saved ones... Postponing this since it nothing new
|
---|
3310 | * and PAE/PDPTR needs some general readjusting, see
|
---|
3311 | * @bugref{5880}. */
|
---|
3312 | }
|
---|
3313 |
|
---|
3314 | pgmR3HandlerPhysicalUpdateAll(pVM);
|
---|
3315 |
|
---|
3316 | /*
|
---|
3317 | * Change the paging mode (indirectly restores PGMCPU::GCPhysCR3).
|
---|
3318 | * (Requires the CPUM state to be restored already!)
|
---|
3319 | */
|
---|
3320 | if (CPUMR3IsStateRestorePending(pVM))
|
---|
3321 | return SSMR3SetLoadError(pSSM, VERR_WRONG_ORDER, RT_SRC_POS,
|
---|
3322 | N_("PGM was unexpectedly restored before CPUM"));
|
---|
3323 |
|
---|
3324 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
3325 | {
|
---|
3326 | PVMCPU pVCpu = pVM->apCpusR3[i];
|
---|
3327 |
|
---|
3328 | rc = PGMHCChangeMode(pVM, pVCpu, pVCpu->pgm.s.enmGuestMode, false /* fForce */);
|
---|
3329 | AssertLogRelRCReturn(rc, rc);
|
---|
3330 |
|
---|
3331 | #if !defined(VBOX_VMM_TARGET_ARMV8)
|
---|
3332 | /* Update the PSE, NX flags and validity masks. */
|
---|
3333 | pVCpu->pgm.s.fGst32BitPageSizeExtension = CPUMIsGuestPageSizeExtEnabled(pVCpu);
|
---|
3334 | PGMNotifyNxeChanged(pVCpu, CPUMIsGuestNXEnabled(pVCpu));
|
---|
3335 | #endif
|
---|
3336 | }
|
---|
3337 | }
|
---|
3338 | }
|
---|
3339 |
|
---|
3340 | return rc;
|
---|
3341 | }
|
---|
3342 |
|
---|
3343 |
|
---|
3344 | /**
|
---|
3345 | * @callback_method_impl{FNSSMINTLOADDONE}
|
---|
3346 | */
|
---|
3347 | static DECLCALLBACK(int) pgmR3LoadDone(PVM pVM, PSSMHANDLE pSSM)
|
---|
3348 | {
|
---|
3349 | pVM->pgm.s.fRestoreRomPagesOnReset = true;
|
---|
3350 | NOREF(pSSM);
|
---|
3351 | return VINF_SUCCESS;
|
---|
3352 | }
|
---|
3353 |
|
---|
3354 |
|
---|
3355 | /**
|
---|
3356 | * Registers the saved state callbacks with SSM.
|
---|
3357 | *
|
---|
3358 | * @returns VBox status code.
|
---|
3359 | * @param pVM The cross context VM structure.
|
---|
3360 | * @param cbRam The RAM size.
|
---|
3361 | */
|
---|
3362 | int pgmR3InitSavedState(PVM pVM, uint64_t cbRam)
|
---|
3363 | {
|
---|
3364 | return SSMR3RegisterInternal(pVM, "pgm", 1, PGM_SAVED_STATE_VERSION, (size_t)cbRam + sizeof(PGM),
|
---|
3365 | pgmR3LivePrep, pgmR3LiveExec, pgmR3LiveVote,
|
---|
3366 | NULL, pgmR3SaveExec, pgmR3SaveDone,
|
---|
3367 | pgmR3LoadPrep, pgmR3Load, pgmR3LoadDone);
|
---|
3368 | }
|
---|
3369 |
|
---|