1 | /* $Id: HMSVMR0.cpp 70413 2018-01-02 07:22:26Z vboxsync $ */
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2 | /** @file
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3 | * HM SVM (AMD-V) - Host Context Ring-0.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2013-2017 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 |
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19 | /*********************************************************************************************************************************
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20 | * Header Files *
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21 | *********************************************************************************************************************************/
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22 | #define LOG_GROUP LOG_GROUP_HM
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23 | #define VMCPU_INCL_CPUM_GST_CTX
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24 | #include <iprt/asm-amd64-x86.h>
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25 | #include <iprt/thread.h>
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26 |
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27 | #include <VBox/vmm/pdmapi.h>
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28 | #include <VBox/vmm/dbgf.h>
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29 | #include <VBox/vmm/iem.h>
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30 | #include <VBox/vmm/iom.h>
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31 | #include <VBox/vmm/tm.h>
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32 | #include <VBox/vmm/gim.h>
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33 | #include <VBox/vmm/apic.h>
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34 | #include "HMInternal.h"
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35 | #include <VBox/vmm/vm.h>
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36 | #include "HMSVMR0.h"
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37 | #include "dtrace/VBoxVMM.h"
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38 |
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39 | #define HMSVM_USE_IEM_EVENT_REFLECTION
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40 | #ifdef DEBUG_ramshankar
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41 | # define HMSVM_SYNC_FULL_GUEST_STATE
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42 | # define HMSVM_ALWAYS_TRAP_ALL_XCPTS
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43 | # define HMSVM_ALWAYS_TRAP_PF
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44 | # define HMSVM_ALWAYS_TRAP_TASK_SWITCH
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45 | #endif
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46 |
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47 |
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48 | /*********************************************************************************************************************************
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49 | * Defined Constants And Macros *
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50 | *********************************************************************************************************************************/
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51 | #ifdef VBOX_WITH_STATISTICS
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52 | # define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { \
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53 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitAll); \
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54 | if ((u64ExitCode) == SVM_EXIT_NPF) \
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55 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitReasonNpf); \
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56 | else \
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57 | STAM_COUNTER_INC(&pVCpu->hm.s.paStatExitReasonR0[(u64ExitCode) & MASK_EXITREASON_STAT]); \
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58 | } while (0)
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59 | #else
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60 | # define HMSVM_EXITCODE_STAM_COUNTER_INC(u64ExitCode) do { } while (0)
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61 | #endif
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62 |
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63 | /** If we decide to use a function table approach this can be useful to
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64 | * switch to a "static DECLCALLBACK(int)". */
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65 | #define HMSVM_EXIT_DECL static int
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66 |
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67 | /** Macro for checking and returning from the using function for
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68 | * \#VMEXIT intercepts that maybe caused during delivering of another
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69 | * event in the guest. */
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70 | #ifdef VBOX_WITH_NESTED_HWVIRT
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71 | # define HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY() \
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72 | do \
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73 | { \
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74 | int rc = hmR0SvmCheckExitDueToEventDelivery(pVCpu, pCtx, pSvmTransient); \
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75 | if (RT_LIKELY(rc == VINF_SUCCESS)) { /* continue #VMEXIT handling */ } \
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76 | else if ( rc == VINF_HM_DOUBLE_FAULT) { return VINF_SUCCESS; } \
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77 | else if ( rc == VINF_EM_RESET \
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78 | && HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_SHUTDOWN)) \
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79 | return VBOXSTRICTRC_TODO(IEMExecSvmVmexit(pVCpu, SVM_EXIT_SHUTDOWN, 0, 0)); \
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80 | else \
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81 | return rc; \
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82 | } while (0)
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83 | #else
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84 | # define HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY() \
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85 | do \
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86 | { \
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87 | int rc = hmR0SvmCheckExitDueToEventDelivery(pVCpu, pCtx, pSvmTransient); \
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88 | if (RT_LIKELY(rc == VINF_SUCCESS)) { /* continue #VMEXIT handling */ } \
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89 | else if ( rc == VINF_HM_DOUBLE_FAULT) { return VINF_SUCCESS; } \
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90 | else \
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91 | return rc; \
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92 | } while (0)
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93 | #endif
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94 |
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95 | /**
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96 | * Updates interrupt shadow for the current RIP.
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97 | */
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98 | #define HMSVM_UPDATE_INTR_SHADOW(pVCpu, pCtx) \
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99 | do { \
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100 | /* Update interrupt shadow. */ \
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101 | if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS) \
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102 | && pCtx->rip != EMGetInhibitInterruptsPC(pVCpu)) \
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103 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS); \
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104 | } while (0)
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105 |
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106 | /** Macro for upgrading a @a a_rc to VINF_EM_DBG_STEPPED after emulating an
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107 | * instruction that exited. */
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108 | #define HMSVM_CHECK_SINGLE_STEP(a_pVCpu, a_rc) \
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109 | do { \
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110 | if ((a_pVCpu)->hm.s.fSingleInstruction && (a_rc) == VINF_SUCCESS) \
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111 | (a_rc) = VINF_EM_DBG_STEPPED; \
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112 | } while (0)
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113 |
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114 | /** Assert that preemption is disabled or covered by thread-context hooks. */
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115 | #define HMSVM_ASSERT_PREEMPT_SAFE() Assert( VMMR0ThreadCtxHookIsEnabled(pVCpu) \
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116 | || !RTThreadPreemptIsEnabled(NIL_RTTHREAD));
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117 |
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118 | /** Assert that we haven't migrated CPUs when thread-context hooks are not
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119 | * used. */
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120 | #define HMSVM_ASSERT_CPU_SAFE() AssertMsg( VMMR0ThreadCtxHookIsEnabled(pVCpu) \
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121 | || pVCpu->hm.s.idEnteredCpu == RTMpCpuId(), \
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122 | ("Illegal migration! Entered on CPU %u Current %u\n", \
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123 | pVCpu->hm.s.idEnteredCpu, RTMpCpuId()));
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124 |
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125 | /** Assert that we're not executing a nested-guest. */
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126 | #ifdef VBOX_WITH_NESTED_HWVIRT
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127 | # define HMSVM_ASSERT_NOT_IN_NESTED_GUEST(a_pCtx) Assert(!CPUMIsGuestInSvmNestedHwVirtMode((a_pCtx)))
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128 | #else
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129 | # define HMSVM_ASSERT_NOT_IN_NESTED_GUEST(a_pCtx) do { NOREF((a_pCtx)); } while (0)
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130 | #endif
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131 |
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132 | /** Assert that we're executing a nested-guest. */
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133 | #ifdef VBOX_WITH_NESTED_HWVIRT
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134 | # define HMSVM_ASSERT_IN_NESTED_GUEST(a_pCtx) Assert(CPUMIsGuestInSvmNestedHwVirtMode((a_pCtx)))
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135 | #else
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136 | # define HMSVM_ASSERT_IN_NESTED_GUEST(a_pCtx) do { NOREF((a_pCtx)); } while (0)
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137 | #endif
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138 |
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139 | /**
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140 | * Exception bitmap mask for all contributory exceptions.
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141 | *
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142 | * Page fault is deliberately excluded here as it's conditional as to whether
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143 | * it's contributory or benign. Page faults are handled separately.
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144 | */
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145 | #define HMSVM_CONTRIBUTORY_XCPT_MASK ( RT_BIT(X86_XCPT_GP) | RT_BIT(X86_XCPT_NP) | RT_BIT(X86_XCPT_SS) | RT_BIT(X86_XCPT_TS) \
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146 | | RT_BIT(X86_XCPT_DE))
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147 |
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148 | /**
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149 | * Mandatory/unconditional guest control intercepts.
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150 | *
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151 | * SMIs can and do happen in normal operation. We need not intercept them
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152 | * while executing the guest or nested-guest.
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153 | */
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154 | #define HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS ( SVM_CTRL_INTERCEPT_INTR \
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155 | | SVM_CTRL_INTERCEPT_NMI \
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156 | | SVM_CTRL_INTERCEPT_INIT \
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157 | | SVM_CTRL_INTERCEPT_RDPMC \
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158 | | SVM_CTRL_INTERCEPT_CPUID \
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159 | | SVM_CTRL_INTERCEPT_RSM \
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160 | | SVM_CTRL_INTERCEPT_HLT \
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161 | | SVM_CTRL_INTERCEPT_IOIO_PROT \
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162 | | SVM_CTRL_INTERCEPT_MSR_PROT \
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163 | | SVM_CTRL_INTERCEPT_INVLPGA \
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164 | | SVM_CTRL_INTERCEPT_SHUTDOWN \
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165 | | SVM_CTRL_INTERCEPT_FERR_FREEZE \
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166 | | SVM_CTRL_INTERCEPT_VMRUN \
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167 | | SVM_CTRL_INTERCEPT_VMMCALL \
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168 | | SVM_CTRL_INTERCEPT_STGI \
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169 | | SVM_CTRL_INTERCEPT_CLGI \
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170 | | SVM_CTRL_INTERCEPT_SKINIT \
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171 | | SVM_CTRL_INTERCEPT_WBINVD \
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172 | | SVM_CTRL_INTERCEPT_MONITOR \
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173 | | SVM_CTRL_INTERCEPT_MWAIT \
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174 | | SVM_CTRL_INTERCEPT_XSETBV)
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175 |
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176 | /** @name VMCB Clean Bits.
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177 | *
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178 | * These flags are used for VMCB-state caching. A set VMCB Clean bit indicates
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179 | * AMD-V doesn't need to reload the corresponding value(s) from the VMCB in
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180 | * memory.
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181 | *
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182 | * @{ */
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183 | /** All intercepts vectors, TSC offset, PAUSE filter counter. */
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184 | #define HMSVM_VMCB_CLEAN_INTERCEPTS RT_BIT(0)
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185 | /** I/O permission bitmap, MSR permission bitmap. */
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186 | #define HMSVM_VMCB_CLEAN_IOPM_MSRPM RT_BIT(1)
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187 | /** ASID. */
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188 | #define HMSVM_VMCB_CLEAN_ASID RT_BIT(2)
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189 | /** TRP: V_TPR, V_IRQ, V_INTR_PRIO, V_IGN_TPR, V_INTR_MASKING,
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190 | V_INTR_VECTOR. */
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191 | #define HMSVM_VMCB_CLEAN_TPR RT_BIT(3)
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192 | /** Nested Paging: Nested CR3 (nCR3), PAT. */
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193 | #define HMSVM_VMCB_CLEAN_NP RT_BIT(4)
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194 | /** Control registers (CR0, CR3, CR4, EFER). */
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195 | #define HMSVM_VMCB_CLEAN_CRX_EFER RT_BIT(5)
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196 | /** Debug registers (DR6, DR7). */
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197 | #define HMSVM_VMCB_CLEAN_DRX RT_BIT(6)
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198 | /** GDT, IDT limit and base. */
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199 | #define HMSVM_VMCB_CLEAN_DT RT_BIT(7)
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200 | /** Segment register: CS, SS, DS, ES limit and base. */
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201 | #define HMSVM_VMCB_CLEAN_SEG RT_BIT(8)
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202 | /** CR2.*/
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203 | #define HMSVM_VMCB_CLEAN_CR2 RT_BIT(9)
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204 | /** Last-branch record (DbgCtlMsr, br_from, br_to, lastint_from, lastint_to) */
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205 | #define HMSVM_VMCB_CLEAN_LBR RT_BIT(10)
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206 | /** AVIC (AVIC APIC_BAR; AVIC APIC_BACKING_PAGE, AVIC
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207 | PHYSICAL_TABLE and AVIC LOGICAL_TABLE Pointers). */
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208 | #define HMSVM_VMCB_CLEAN_AVIC RT_BIT(11)
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209 | /** Mask of all valid VMCB Clean bits. */
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210 | #define HMSVM_VMCB_CLEAN_ALL ( HMSVM_VMCB_CLEAN_INTERCEPTS \
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211 | | HMSVM_VMCB_CLEAN_IOPM_MSRPM \
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212 | | HMSVM_VMCB_CLEAN_ASID \
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213 | | HMSVM_VMCB_CLEAN_TPR \
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214 | | HMSVM_VMCB_CLEAN_NP \
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215 | | HMSVM_VMCB_CLEAN_CRX_EFER \
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216 | | HMSVM_VMCB_CLEAN_DRX \
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217 | | HMSVM_VMCB_CLEAN_DT \
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218 | | HMSVM_VMCB_CLEAN_SEG \
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219 | | HMSVM_VMCB_CLEAN_CR2 \
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220 | | HMSVM_VMCB_CLEAN_LBR \
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221 | | HMSVM_VMCB_CLEAN_AVIC)
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222 | /** @} */
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223 |
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224 | /** @name SVM transient.
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225 | *
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226 | * A state structure for holding miscellaneous information across AMD-V
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227 | * VMRUN/\#VMEXIT operation, restored after the transition.
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228 | *
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229 | * @{ */
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230 | typedef struct SVMTRANSIENT
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231 | {
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232 | /** The host's rflags/eflags. */
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233 | RTCCUINTREG fEFlags;
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234 | #if HC_ARCH_BITS == 32
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235 | uint32_t u32Alignment0;
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236 | #endif
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237 |
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238 | /** The \#VMEXIT exit code (the EXITCODE field in the VMCB). */
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239 | uint64_t u64ExitCode;
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240 | /** The guest's TPR value used for TPR shadowing. */
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241 | uint8_t u8GuestTpr;
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242 | /** Alignment. */
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243 | uint8_t abAlignment0[7];
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244 |
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245 | /** Whether the guest FPU state was active at the time of \#VMEXIT. */
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246 | bool fWasGuestFPUStateActive;
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247 | /** Whether the guest debug state was active at the time of \#VMEXIT. */
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248 | bool fWasGuestDebugStateActive;
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249 | /** Whether the hyper debug state was active at the time of \#VMEXIT. */
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250 | bool fWasHyperDebugStateActive;
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251 | /** Whether the TSC offset mode needs to be updated. */
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252 | bool fUpdateTscOffsetting;
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253 | /** Whether the TSC_AUX MSR needs restoring on \#VMEXIT. */
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254 | bool fRestoreTscAuxMsr;
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255 | /** Whether the \#VMEXIT was caused by a page-fault during delivery of a
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256 | * contributary exception or a page-fault. */
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257 | bool fVectoringDoublePF;
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258 | /** Whether the \#VMEXIT was caused by a page-fault during delivery of an
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259 | * external interrupt or NMI. */
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260 | bool fVectoringPF;
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261 | } SVMTRANSIENT, *PSVMTRANSIENT;
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262 | AssertCompileMemberAlignment(SVMTRANSIENT, u64ExitCode, sizeof(uint64_t));
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263 | AssertCompileMemberAlignment(SVMTRANSIENT, fWasGuestFPUStateActive, sizeof(uint64_t));
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264 | /** @} */
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265 |
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266 | /**
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267 | * MSRPM (MSR permission bitmap) read permissions (for guest RDMSR).
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268 | */
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269 | typedef enum SVMMSREXITREAD
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270 | {
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271 | /** Reading this MSR causes a \#VMEXIT. */
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272 | SVMMSREXIT_INTERCEPT_READ = 0xb,
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273 | /** Reading this MSR does not cause a \#VMEXIT. */
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274 | SVMMSREXIT_PASSTHRU_READ
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275 | } SVMMSREXITREAD;
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276 |
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277 | /**
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278 | * MSRPM (MSR permission bitmap) write permissions (for guest WRMSR).
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279 | */
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280 | typedef enum SVMMSREXITWRITE
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281 | {
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282 | /** Writing to this MSR causes a \#VMEXIT. */
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283 | SVMMSREXIT_INTERCEPT_WRITE = 0xd,
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284 | /** Writing to this MSR does not cause a \#VMEXIT. */
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285 | SVMMSREXIT_PASSTHRU_WRITE
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286 | } SVMMSREXITWRITE;
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287 |
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288 | /**
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289 | * SVM \#VMEXIT handler.
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290 | *
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291 | * @returns VBox status code.
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292 | * @param pVCpu The cross context virtual CPU structure.
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293 | * @param pMixedCtx Pointer to the guest-CPU context.
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294 | * @param pSvmTransient Pointer to the SVM-transient structure.
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295 | */
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296 | typedef int FNSVMEXITHANDLER(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient);
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297 |
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298 |
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299 | /*********************************************************************************************************************************
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300 | * Internal Functions *
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301 | *********************************************************************************************************************************/
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302 | static void hmR0SvmSetMsrPermission(PSVMVMCB pVmcb, uint8_t *pbMsrBitmap, unsigned uMsr, SVMMSREXITREAD enmRead,
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303 | SVMMSREXITWRITE enmWrite);
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304 | static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu);
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305 | static void hmR0SvmLeave(PVMCPU pVCpu);
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306 |
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307 | /** @name \#VMEXIT handlers.
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308 | * @{
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309 | */
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310 | static FNSVMEXITHANDLER hmR0SvmExitIntr;
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311 | static FNSVMEXITHANDLER hmR0SvmExitWbinvd;
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312 | static FNSVMEXITHANDLER hmR0SvmExitInvd;
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313 | static FNSVMEXITHANDLER hmR0SvmExitCpuid;
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314 | static FNSVMEXITHANDLER hmR0SvmExitRdtsc;
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315 | static FNSVMEXITHANDLER hmR0SvmExitRdtscp;
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316 | static FNSVMEXITHANDLER hmR0SvmExitRdpmc;
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317 | static FNSVMEXITHANDLER hmR0SvmExitInvlpg;
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318 | static FNSVMEXITHANDLER hmR0SvmExitHlt;
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319 | static FNSVMEXITHANDLER hmR0SvmExitMonitor;
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320 | static FNSVMEXITHANDLER hmR0SvmExitMwait;
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321 | static FNSVMEXITHANDLER hmR0SvmExitShutdown;
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322 | static FNSVMEXITHANDLER hmR0SvmExitUnexpected;
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323 | static FNSVMEXITHANDLER hmR0SvmExitReadCRx;
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324 | static FNSVMEXITHANDLER hmR0SvmExitWriteCRx;
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325 | static FNSVMEXITHANDLER hmR0SvmExitMsr;
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326 | static FNSVMEXITHANDLER hmR0SvmExitReadDRx;
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327 | static FNSVMEXITHANDLER hmR0SvmExitWriteDRx;
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328 | static FNSVMEXITHANDLER hmR0SvmExitXsetbv;
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329 | static FNSVMEXITHANDLER hmR0SvmExitIOInstr;
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330 | static FNSVMEXITHANDLER hmR0SvmExitNestedPF;
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331 | static FNSVMEXITHANDLER hmR0SvmExitVIntr;
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332 | static FNSVMEXITHANDLER hmR0SvmExitTaskSwitch;
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333 | static FNSVMEXITHANDLER hmR0SvmExitVmmCall;
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334 | static FNSVMEXITHANDLER hmR0SvmExitPause;
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335 | static FNSVMEXITHANDLER hmR0SvmExitIret;
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336 | static FNSVMEXITHANDLER hmR0SvmExitXcptPF;
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337 | static FNSVMEXITHANDLER hmR0SvmExitXcptNM;
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338 | static FNSVMEXITHANDLER hmR0SvmExitXcptUD;
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339 | static FNSVMEXITHANDLER hmR0SvmExitXcptMF;
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340 | static FNSVMEXITHANDLER hmR0SvmExitXcptDB;
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341 | static FNSVMEXITHANDLER hmR0SvmExitXcptAC;
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342 | static FNSVMEXITHANDLER hmR0SvmExitXcptBP;
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343 | #if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) || defined(VBOX_WITH_NESTED_HWVIRT)
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344 | static FNSVMEXITHANDLER hmR0SvmExitXcptGeneric;
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345 | #endif
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346 | #ifdef VBOX_WITH_NESTED_HWVIRT
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347 | static FNSVMEXITHANDLER hmR0SvmExitXcptPFNested;
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348 | static FNSVMEXITHANDLER hmR0SvmExitClgi;
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349 | static FNSVMEXITHANDLER hmR0SvmExitStgi;
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350 | static FNSVMEXITHANDLER hmR0SvmExitVmload;
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351 | static FNSVMEXITHANDLER hmR0SvmExitVmsave;
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352 | static FNSVMEXITHANDLER hmR0SvmExitInvlpga;
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353 | static FNSVMEXITHANDLER hmR0SvmExitVmrun;
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354 | static FNSVMEXITHANDLER hmR0SvmNestedExitXcptDB;
|
---|
355 | static FNSVMEXITHANDLER hmR0SvmNestedExitXcptBP;
|
---|
356 | #endif
|
---|
357 | /** @} */
|
---|
358 |
|
---|
359 | static int hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient);
|
---|
360 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
361 | static int hmR0SvmHandleExitNested(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient);
|
---|
362 | #endif
|
---|
363 |
|
---|
364 |
|
---|
365 | /*********************************************************************************************************************************
|
---|
366 | * Global Variables *
|
---|
367 | *********************************************************************************************************************************/
|
---|
368 | /** Ring-0 memory object for the IO bitmap. */
|
---|
369 | RTR0MEMOBJ g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
|
---|
370 | /** Physical address of the IO bitmap. */
|
---|
371 | RTHCPHYS g_HCPhysIOBitmap = 0;
|
---|
372 | /** Pointer to the IO bitmap. */
|
---|
373 | R0PTRTYPE(void *) g_pvIOBitmap = NULL;
|
---|
374 |
|
---|
375 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
376 | /** Ring-0 memory object for the nested-guest MSRPM bitmap. */
|
---|
377 | RTR0MEMOBJ g_hMemObjNstGstMsrBitmap = NIL_RTR0MEMOBJ;
|
---|
378 | /** Physical address of the nested-guest MSRPM bitmap. */
|
---|
379 | RTHCPHYS g_HCPhysNstGstMsrBitmap = 0;
|
---|
380 | /** Pointer to the nested-guest MSRPM bitmap. */
|
---|
381 | R0PTRTYPE(void *) g_pvNstGstMsrBitmap = NULL;
|
---|
382 | #endif
|
---|
383 |
|
---|
384 | /**
|
---|
385 | * Sets up and activates AMD-V on the current CPU.
|
---|
386 | *
|
---|
387 | * @returns VBox status code.
|
---|
388 | * @param pCpu Pointer to the CPU info struct.
|
---|
389 | * @param pVM The cross context VM structure. Can be
|
---|
390 | * NULL after a resume!
|
---|
391 | * @param pvCpuPage Pointer to the global CPU page.
|
---|
392 | * @param HCPhysCpuPage Physical address of the global CPU page.
|
---|
393 | * @param fEnabledByHost Whether the host OS has already initialized AMD-V.
|
---|
394 | * @param pvArg Unused on AMD-V.
|
---|
395 | */
|
---|
396 | VMMR0DECL(int) SVMR0EnableCpu(PHMGLOBALCPUINFO pCpu, PVM pVM, void *pvCpuPage, RTHCPHYS HCPhysCpuPage, bool fEnabledByHost,
|
---|
397 | void *pvArg)
|
---|
398 | {
|
---|
399 | Assert(!fEnabledByHost);
|
---|
400 | Assert(HCPhysCpuPage && HCPhysCpuPage != NIL_RTHCPHYS);
|
---|
401 | Assert(RT_ALIGN_T(HCPhysCpuPage, _4K, RTHCPHYS) == HCPhysCpuPage);
|
---|
402 | Assert(pvCpuPage); NOREF(pvCpuPage);
|
---|
403 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
404 |
|
---|
405 | NOREF(pvArg);
|
---|
406 | NOREF(fEnabledByHost);
|
---|
407 |
|
---|
408 | /* Paranoid: Disable interrupt as, in theory, interrupt handlers might mess with EFER. */
|
---|
409 | RTCCUINTREG fEFlags = ASMIntDisableFlags();
|
---|
410 |
|
---|
411 | /*
|
---|
412 | * We must turn on AMD-V and setup the host state physical address, as those MSRs are per CPU.
|
---|
413 | */
|
---|
414 | uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
|
---|
415 | if (u64HostEfer & MSR_K6_EFER_SVME)
|
---|
416 | {
|
---|
417 | /* If the VBOX_HWVIRTEX_IGNORE_SVM_IN_USE is active, then we blindly use AMD-V. */
|
---|
418 | if ( pVM
|
---|
419 | && pVM->hm.s.svm.fIgnoreInUseError)
|
---|
420 | {
|
---|
421 | pCpu->fIgnoreAMDVInUseError = true;
|
---|
422 | }
|
---|
423 |
|
---|
424 | if (!pCpu->fIgnoreAMDVInUseError)
|
---|
425 | {
|
---|
426 | ASMSetFlags(fEFlags);
|
---|
427 | return VERR_SVM_IN_USE;
|
---|
428 | }
|
---|
429 | }
|
---|
430 |
|
---|
431 | /* Turn on AMD-V in the EFER MSR. */
|
---|
432 | ASMWrMsr(MSR_K6_EFER, u64HostEfer | MSR_K6_EFER_SVME);
|
---|
433 |
|
---|
434 | /* Write the physical page address where the CPU will store the host state while executing the VM. */
|
---|
435 | ASMWrMsr(MSR_K8_VM_HSAVE_PA, HCPhysCpuPage);
|
---|
436 |
|
---|
437 | /* Restore interrupts. */
|
---|
438 | ASMSetFlags(fEFlags);
|
---|
439 |
|
---|
440 | /*
|
---|
441 | * Theoretically, other hypervisors may have used ASIDs, ideally we should flush all non-zero ASIDs
|
---|
442 | * when enabling SVM. AMD doesn't have an SVM instruction to flush all ASIDs (flushing is done
|
---|
443 | * upon VMRUN). Therefore, flag that we need to flush the TLB entirely with before executing any
|
---|
444 | * guest code.
|
---|
445 | */
|
---|
446 | pCpu->fFlushAsidBeforeUse = true;
|
---|
447 |
|
---|
448 | /*
|
---|
449 | * Ensure each VCPU scheduled on this CPU gets a new ASID on resume. See @bugref{6255}.
|
---|
450 | */
|
---|
451 | ++pCpu->cTlbFlushes;
|
---|
452 |
|
---|
453 | return VINF_SUCCESS;
|
---|
454 | }
|
---|
455 |
|
---|
456 |
|
---|
457 | /**
|
---|
458 | * Deactivates AMD-V on the current CPU.
|
---|
459 | *
|
---|
460 | * @returns VBox status code.
|
---|
461 | * @param pCpu Pointer to the CPU info struct.
|
---|
462 | * @param pvCpuPage Pointer to the global CPU page.
|
---|
463 | * @param HCPhysCpuPage Physical address of the global CPU page.
|
---|
464 | */
|
---|
465 | VMMR0DECL(int) SVMR0DisableCpu(PHMGLOBALCPUINFO pCpu, void *pvCpuPage, RTHCPHYS HCPhysCpuPage)
|
---|
466 | {
|
---|
467 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
468 | AssertReturn( HCPhysCpuPage
|
---|
469 | && HCPhysCpuPage != NIL_RTHCPHYS, VERR_INVALID_PARAMETER);
|
---|
470 | AssertReturn(pvCpuPage, VERR_INVALID_PARAMETER);
|
---|
471 | NOREF(pCpu);
|
---|
472 |
|
---|
473 | /* Paranoid: Disable interrupts as, in theory, interrupt handlers might mess with EFER. */
|
---|
474 | RTCCUINTREG fEFlags = ASMIntDisableFlags();
|
---|
475 |
|
---|
476 | /* Turn off AMD-V in the EFER MSR. */
|
---|
477 | uint64_t u64HostEfer = ASMRdMsr(MSR_K6_EFER);
|
---|
478 | ASMWrMsr(MSR_K6_EFER, u64HostEfer & ~MSR_K6_EFER_SVME);
|
---|
479 |
|
---|
480 | /* Invalidate host state physical address. */
|
---|
481 | ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
|
---|
482 |
|
---|
483 | /* Restore interrupts. */
|
---|
484 | ASMSetFlags(fEFlags);
|
---|
485 |
|
---|
486 | return VINF_SUCCESS;
|
---|
487 | }
|
---|
488 |
|
---|
489 |
|
---|
490 | /**
|
---|
491 | * Does global AMD-V initialization (called during module initialization).
|
---|
492 | *
|
---|
493 | * @returns VBox status code.
|
---|
494 | */
|
---|
495 | VMMR0DECL(int) SVMR0GlobalInit(void)
|
---|
496 | {
|
---|
497 | /*
|
---|
498 | * Allocate 12 KB for the IO bitmap. Since this is non-optional and we always intercept all IO accesses, it's done
|
---|
499 | * once globally here instead of per-VM.
|
---|
500 | */
|
---|
501 | Assert(g_hMemObjIOBitmap == NIL_RTR0MEMOBJ);
|
---|
502 | int rc = RTR0MemObjAllocCont(&g_hMemObjIOBitmap, SVM_IOPM_PAGES << X86_PAGE_4K_SHIFT, false /* fExecutable */);
|
---|
503 | if (RT_FAILURE(rc))
|
---|
504 | return rc;
|
---|
505 |
|
---|
506 | g_pvIOBitmap = RTR0MemObjAddress(g_hMemObjIOBitmap);
|
---|
507 | g_HCPhysIOBitmap = RTR0MemObjGetPagePhysAddr(g_hMemObjIOBitmap, 0 /* iPage */);
|
---|
508 |
|
---|
509 | /* Set all bits to intercept all IO accesses. */
|
---|
510 | ASMMemFill32(g_pvIOBitmap, SVM_IOPM_PAGES << X86_PAGE_4K_SHIFT, UINT32_C(0xffffffff));
|
---|
511 |
|
---|
512 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
513 | /*
|
---|
514 | * Allocate 8 KB for the MSR permission bitmap for the nested-guest.
|
---|
515 | */
|
---|
516 | Assert(g_hMemObjNstGstMsrBitmap == NIL_RTR0MEMOBJ);
|
---|
517 | rc = RTR0MemObjAllocCont(&g_hMemObjNstGstMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT, false /* fExecutable */);
|
---|
518 | if (RT_FAILURE(rc))
|
---|
519 | return rc;
|
---|
520 |
|
---|
521 | g_pvNstGstMsrBitmap = RTR0MemObjAddress(g_hMemObjNstGstMsrBitmap);
|
---|
522 | g_HCPhysNstGstMsrBitmap = RTR0MemObjGetPagePhysAddr(g_hMemObjNstGstMsrBitmap, 0 /* iPage */);
|
---|
523 |
|
---|
524 | /* Set all bits to intercept all MSR accesses. */
|
---|
525 | ASMMemFill32(g_pvNstGstMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT, UINT32_C(0xffffffff));
|
---|
526 | #endif
|
---|
527 |
|
---|
528 | return VINF_SUCCESS;
|
---|
529 | }
|
---|
530 |
|
---|
531 |
|
---|
532 | /**
|
---|
533 | * Does global AMD-V termination (called during module termination).
|
---|
534 | */
|
---|
535 | VMMR0DECL(void) SVMR0GlobalTerm(void)
|
---|
536 | {
|
---|
537 | if (g_hMemObjIOBitmap != NIL_RTR0MEMOBJ)
|
---|
538 | {
|
---|
539 | RTR0MemObjFree(g_hMemObjIOBitmap, true /* fFreeMappings */);
|
---|
540 | g_pvIOBitmap = NULL;
|
---|
541 | g_HCPhysIOBitmap = 0;
|
---|
542 | g_hMemObjIOBitmap = NIL_RTR0MEMOBJ;
|
---|
543 | }
|
---|
544 |
|
---|
545 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
546 | if (g_hMemObjNstGstMsrBitmap != NIL_RTR0MEMOBJ)
|
---|
547 | {
|
---|
548 | RTR0MemObjFree(g_hMemObjNstGstMsrBitmap, true /* fFreeMappings */);
|
---|
549 | g_pvNstGstMsrBitmap = NULL;
|
---|
550 | g_HCPhysNstGstMsrBitmap = 0;
|
---|
551 | g_hMemObjNstGstMsrBitmap = NIL_RTR0MEMOBJ;
|
---|
552 | }
|
---|
553 | #endif
|
---|
554 | }
|
---|
555 |
|
---|
556 |
|
---|
557 | /**
|
---|
558 | * Frees any allocated per-VCPU structures for a VM.
|
---|
559 | *
|
---|
560 | * @param pVM The cross context VM structure.
|
---|
561 | */
|
---|
562 | DECLINLINE(void) hmR0SvmFreeStructs(PVM pVM)
|
---|
563 | {
|
---|
564 | for (uint32_t i = 0; i < pVM->cCpus; i++)
|
---|
565 | {
|
---|
566 | PVMCPU pVCpu = &pVM->aCpus[i];
|
---|
567 | AssertPtr(pVCpu);
|
---|
568 |
|
---|
569 | if (pVCpu->hm.s.svm.hMemObjVmcbHost != NIL_RTR0MEMOBJ)
|
---|
570 | {
|
---|
571 | RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcbHost, false);
|
---|
572 | pVCpu->hm.s.svm.HCPhysVmcbHost = 0;
|
---|
573 | pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
|
---|
574 | }
|
---|
575 |
|
---|
576 | if (pVCpu->hm.s.svm.hMemObjVmcb != NIL_RTR0MEMOBJ)
|
---|
577 | {
|
---|
578 | RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjVmcb, false);
|
---|
579 | pVCpu->hm.s.svm.pVmcb = NULL;
|
---|
580 | pVCpu->hm.s.svm.HCPhysVmcb = 0;
|
---|
581 | pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
|
---|
582 | }
|
---|
583 |
|
---|
584 | if (pVCpu->hm.s.svm.hMemObjMsrBitmap != NIL_RTR0MEMOBJ)
|
---|
585 | {
|
---|
586 | RTR0MemObjFree(pVCpu->hm.s.svm.hMemObjMsrBitmap, false);
|
---|
587 | pVCpu->hm.s.svm.pvMsrBitmap = NULL;
|
---|
588 | pVCpu->hm.s.svm.HCPhysMsrBitmap = 0;
|
---|
589 | pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
|
---|
590 | }
|
---|
591 | }
|
---|
592 | }
|
---|
593 |
|
---|
594 |
|
---|
595 | /**
|
---|
596 | * Does per-VM AMD-V initialization.
|
---|
597 | *
|
---|
598 | * @returns VBox status code.
|
---|
599 | * @param pVM The cross context VM structure.
|
---|
600 | */
|
---|
601 | VMMR0DECL(int) SVMR0InitVM(PVM pVM)
|
---|
602 | {
|
---|
603 | int rc = VERR_INTERNAL_ERROR_5;
|
---|
604 |
|
---|
605 | /*
|
---|
606 | * Check for an AMD CPU erratum which requires us to flush the TLB before every world-switch.
|
---|
607 | */
|
---|
608 | uint32_t u32Family;
|
---|
609 | uint32_t u32Model;
|
---|
610 | uint32_t u32Stepping;
|
---|
611 | if (HMAmdIsSubjectToErratum170(&u32Family, &u32Model, &u32Stepping))
|
---|
612 | {
|
---|
613 | Log4(("SVMR0InitVM: AMD cpu with erratum 170 family %#x model %#x stepping %#x\n", u32Family, u32Model, u32Stepping));
|
---|
614 | pVM->hm.s.svm.fAlwaysFlushTLB = true;
|
---|
615 | }
|
---|
616 |
|
---|
617 | /*
|
---|
618 | * Initialize the R0 memory objects up-front so we can properly cleanup on allocation failures.
|
---|
619 | */
|
---|
620 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
621 | {
|
---|
622 | PVMCPU pVCpu = &pVM->aCpus[i];
|
---|
623 | pVCpu->hm.s.svm.hMemObjVmcbHost = NIL_RTR0MEMOBJ;
|
---|
624 | pVCpu->hm.s.svm.hMemObjVmcb = NIL_RTR0MEMOBJ;
|
---|
625 | pVCpu->hm.s.svm.hMemObjMsrBitmap = NIL_RTR0MEMOBJ;
|
---|
626 | }
|
---|
627 |
|
---|
628 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
629 | {
|
---|
630 | PVMCPU pVCpu = &pVM->aCpus[i];
|
---|
631 |
|
---|
632 | /*
|
---|
633 | * Allocate one page for the host-context VM control block (VMCB). This is used for additional host-state (such as
|
---|
634 | * FS, GS, Kernel GS Base, etc.) apart from the host-state save area specified in MSR_K8_VM_HSAVE_PA.
|
---|
635 | */
|
---|
636 | rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcbHost, SVM_VMCB_PAGES << PAGE_SHIFT, false /* fExecutable */);
|
---|
637 | if (RT_FAILURE(rc))
|
---|
638 | goto failure_cleanup;
|
---|
639 |
|
---|
640 | void *pvVmcbHost = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcbHost);
|
---|
641 | pVCpu->hm.s.svm.HCPhysVmcbHost = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcbHost, 0 /* iPage */);
|
---|
642 | Assert(pVCpu->hm.s.svm.HCPhysVmcbHost < _4G);
|
---|
643 | ASMMemZeroPage(pvVmcbHost);
|
---|
644 |
|
---|
645 | /*
|
---|
646 | * Allocate one page for the guest-state VMCB.
|
---|
647 | */
|
---|
648 | rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjVmcb, SVM_VMCB_PAGES << PAGE_SHIFT, false /* fExecutable */);
|
---|
649 | if (RT_FAILURE(rc))
|
---|
650 | goto failure_cleanup;
|
---|
651 |
|
---|
652 | pVCpu->hm.s.svm.pVmcb = (PSVMVMCB)RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjVmcb);
|
---|
653 | pVCpu->hm.s.svm.HCPhysVmcb = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjVmcb, 0 /* iPage */);
|
---|
654 | Assert(pVCpu->hm.s.svm.HCPhysVmcb < _4G);
|
---|
655 | ASMMemZeroPage(pVCpu->hm.s.svm.pVmcb);
|
---|
656 |
|
---|
657 | /*
|
---|
658 | * Allocate two pages (8 KB) for the MSR permission bitmap. There doesn't seem to be a way to convince
|
---|
659 | * SVM to not require one.
|
---|
660 | */
|
---|
661 | rc = RTR0MemObjAllocCont(&pVCpu->hm.s.svm.hMemObjMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT,
|
---|
662 | false /* fExecutable */);
|
---|
663 | if (RT_FAILURE(rc))
|
---|
664 | goto failure_cleanup;
|
---|
665 |
|
---|
666 | pVCpu->hm.s.svm.pvMsrBitmap = RTR0MemObjAddress(pVCpu->hm.s.svm.hMemObjMsrBitmap);
|
---|
667 | pVCpu->hm.s.svm.HCPhysMsrBitmap = RTR0MemObjGetPagePhysAddr(pVCpu->hm.s.svm.hMemObjMsrBitmap, 0 /* iPage */);
|
---|
668 | /* Set all bits to intercept all MSR accesses (changed later on). */
|
---|
669 | ASMMemFill32(pVCpu->hm.s.svm.pvMsrBitmap, SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT, UINT32_C(0xffffffff));
|
---|
670 | }
|
---|
671 |
|
---|
672 | return VINF_SUCCESS;
|
---|
673 |
|
---|
674 | failure_cleanup:
|
---|
675 | hmR0SvmFreeStructs(pVM);
|
---|
676 | return rc;
|
---|
677 | }
|
---|
678 |
|
---|
679 |
|
---|
680 | /**
|
---|
681 | * Does per-VM AMD-V termination.
|
---|
682 | *
|
---|
683 | * @returns VBox status code.
|
---|
684 | * @param pVM The cross context VM structure.
|
---|
685 | */
|
---|
686 | VMMR0DECL(int) SVMR0TermVM(PVM pVM)
|
---|
687 | {
|
---|
688 | hmR0SvmFreeStructs(pVM);
|
---|
689 | return VINF_SUCCESS;
|
---|
690 | }
|
---|
691 |
|
---|
692 |
|
---|
693 | /**
|
---|
694 | * Returns whether the VMCB Clean Bits feature is supported.
|
---|
695 | *
|
---|
696 | * @return @c true if supported, @c false otherwise.
|
---|
697 | * @param pVCpu The cross context virtual CPU structure.
|
---|
698 | * @param pCtx Pointer to the guest-CPU context.
|
---|
699 | */
|
---|
700 | DECLINLINE(bool) hmR0SvmSupportsVmcbCleanBits(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
701 | {
|
---|
702 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
703 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
704 | if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
705 | {
|
---|
706 | return (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN)
|
---|
707 | && pVM->cpum.ro.GuestFeatures.fSvmVmcbClean;
|
---|
708 | }
|
---|
709 | #else
|
---|
710 | RT_NOREF(pCtx);
|
---|
711 | #endif
|
---|
712 | return RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN);
|
---|
713 | }
|
---|
714 |
|
---|
715 |
|
---|
716 | /**
|
---|
717 | * Returns whether the decode assists feature is supported.
|
---|
718 | *
|
---|
719 | * @return @c true if supported, @c false otherwise.
|
---|
720 | * @param pVCpu The cross context virtual CPU structure.
|
---|
721 | * @param pCtx Pointer to the guest-CPU context.
|
---|
722 | */
|
---|
723 | DECLINLINE(bool) hmR0SvmSupportsDecodeAssists(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
724 | {
|
---|
725 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
726 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
727 | if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
728 | {
|
---|
729 | return (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_DECODE_ASSISTS)
|
---|
730 | && pVM->cpum.ro.GuestFeatures.fSvmDecodeAssists;
|
---|
731 | }
|
---|
732 | #else
|
---|
733 | RT_NOREF(pCtx);
|
---|
734 | #endif
|
---|
735 | return RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_DECODE_ASSISTS);
|
---|
736 | }
|
---|
737 |
|
---|
738 |
|
---|
739 | /**
|
---|
740 | * Returns whether the NRIP_SAVE feature is supported.
|
---|
741 | *
|
---|
742 | * @return @c true if supported, @c false otherwise.
|
---|
743 | * @param pVCpu The cross context virtual CPU structure.
|
---|
744 | * @param pCtx Pointer to the guest-CPU context.
|
---|
745 | */
|
---|
746 | DECLINLINE(bool) hmR0SvmSupportsNextRipSave(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
747 | {
|
---|
748 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
749 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
750 | if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
751 | {
|
---|
752 | return (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_NRIP_SAVE)
|
---|
753 | && pVM->cpum.ro.GuestFeatures.fSvmNextRipSave;
|
---|
754 | }
|
---|
755 | #else
|
---|
756 | RT_NOREF(pCtx);
|
---|
757 | #endif
|
---|
758 | return RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_NRIP_SAVE);
|
---|
759 | }
|
---|
760 |
|
---|
761 |
|
---|
762 | /**
|
---|
763 | * Sets the permission bits for the specified MSR in the MSRPM.
|
---|
764 | *
|
---|
765 | * @param pVmcb Pointer to the VM control block.
|
---|
766 | * @param pbMsrBitmap Pointer to the MSR bitmap.
|
---|
767 | * @param uMsr The MSR for which the access permissions are being set.
|
---|
768 | * @param enmRead MSR read permissions.
|
---|
769 | * @param enmWrite MSR write permissions.
|
---|
770 | */
|
---|
771 | static void hmR0SvmSetMsrPermission(PSVMVMCB pVmcb, uint8_t *pbMsrBitmap, unsigned uMsr, SVMMSREXITREAD enmRead,
|
---|
772 | SVMMSREXITWRITE enmWrite)
|
---|
773 | {
|
---|
774 | uint16_t offMsrpm;
|
---|
775 | uint32_t uMsrpmBit;
|
---|
776 | int rc = HMSvmGetMsrpmOffsetAndBit(uMsr, &offMsrpm, &uMsrpmBit);
|
---|
777 | AssertRC(rc);
|
---|
778 |
|
---|
779 | Assert(uMsrpmBit < 0x3fff);
|
---|
780 | Assert(offMsrpm < SVM_MSRPM_PAGES << X86_PAGE_4K_SHIFT);
|
---|
781 |
|
---|
782 | pbMsrBitmap += offMsrpm;
|
---|
783 | if (enmRead == SVMMSREXIT_INTERCEPT_READ)
|
---|
784 | ASMBitSet(pbMsrBitmap, uMsrpmBit);
|
---|
785 | else
|
---|
786 | ASMBitClear(pbMsrBitmap, uMsrpmBit);
|
---|
787 |
|
---|
788 | if (enmWrite == SVMMSREXIT_INTERCEPT_WRITE)
|
---|
789 | ASMBitSet(pbMsrBitmap, uMsrpmBit + 1);
|
---|
790 | else
|
---|
791 | ASMBitClear(pbMsrBitmap, uMsrpmBit + 1);
|
---|
792 |
|
---|
793 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_IOPM_MSRPM;
|
---|
794 | }
|
---|
795 |
|
---|
796 |
|
---|
797 | /**
|
---|
798 | * Sets up AMD-V for the specified VM.
|
---|
799 | * This function is only called once per-VM during initalization.
|
---|
800 | *
|
---|
801 | * @returns VBox status code.
|
---|
802 | * @param pVM The cross context VM structure.
|
---|
803 | */
|
---|
804 | VMMR0DECL(int) SVMR0SetupVM(PVM pVM)
|
---|
805 | {
|
---|
806 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
807 | AssertReturn(pVM, VERR_INVALID_PARAMETER);
|
---|
808 | Assert(pVM->hm.s.svm.fSupported);
|
---|
809 |
|
---|
810 | bool const fPauseFilter = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER);
|
---|
811 | bool const fPauseFilterThreshold = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER_THRESHOLD);
|
---|
812 | bool const fUsePauseFilter = fPauseFilter && pVM->hm.s.svm.cPauseFilter && pVM->hm.s.svm.cPauseFilterThresholdTicks;
|
---|
813 |
|
---|
814 | bool const fLbrVirt = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_LBR_VIRT);
|
---|
815 | bool const fUseLbrVirt = fLbrVirt; /** @todo CFGM etc. */
|
---|
816 |
|
---|
817 | bool const fVirtVmsaveVmload = RT_BOOL(pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_VIRT_VMSAVE_VMLOAD);
|
---|
818 | bool const fUseVirtVmsaveVmload = fVirtVmsaveVmload && pVM->hm.s.svm.fVirtVmsaveVmload && pVM->hm.s.fNestedPaging;
|
---|
819 |
|
---|
820 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
---|
821 | {
|
---|
822 | PVMCPU pVCpu = &pVM->aCpus[i];
|
---|
823 | PSVMVMCB pVmcb = pVM->aCpus[i].hm.s.svm.pVmcb;
|
---|
824 |
|
---|
825 | AssertMsgReturn(pVmcb, ("Invalid pVmcb for vcpu[%u]\n", i), VERR_SVM_INVALID_PVMCB);
|
---|
826 |
|
---|
827 | /* Initialize the #VMEXIT history array with end-of-array markers (UINT16_MAX). */
|
---|
828 | Assert(!pVCpu->hm.s.idxExitHistoryFree);
|
---|
829 | HMCPU_EXIT_HISTORY_RESET(pVCpu);
|
---|
830 |
|
---|
831 | /* Always trap #AC for reasons of security. */
|
---|
832 | pVmcb->ctrl.u32InterceptXcpt |= RT_BIT_32(X86_XCPT_AC);
|
---|
833 |
|
---|
834 | /* Always trap #DB for reasons of security. */
|
---|
835 | pVmcb->ctrl.u32InterceptXcpt |= RT_BIT_32(X86_XCPT_DB);
|
---|
836 |
|
---|
837 | /* Trap exceptions unconditionally (debug purposes). */
|
---|
838 | #ifdef HMSVM_ALWAYS_TRAP_PF
|
---|
839 | pVmcb->ctrl.u32InterceptXcpt |= RT_BIT(X86_XCPT_PF);
|
---|
840 | #endif
|
---|
841 | #ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
|
---|
842 | /* If you add any exceptions here, make sure to update hmR0SvmHandleExit(). */
|
---|
843 | pVmcb->ctrl.u32InterceptXcpt |= 0
|
---|
844 | | RT_BIT(X86_XCPT_BP)
|
---|
845 | | RT_BIT(X86_XCPT_DE)
|
---|
846 | | RT_BIT(X86_XCPT_NM)
|
---|
847 | | RT_BIT(X86_XCPT_UD)
|
---|
848 | | RT_BIT(X86_XCPT_NP)
|
---|
849 | | RT_BIT(X86_XCPT_SS)
|
---|
850 | | RT_BIT(X86_XCPT_GP)
|
---|
851 | | RT_BIT(X86_XCPT_PF)
|
---|
852 | | RT_BIT(X86_XCPT_MF)
|
---|
853 | ;
|
---|
854 | #endif
|
---|
855 |
|
---|
856 | /* Set up unconditional intercepts and conditions. */
|
---|
857 | pVmcb->ctrl.u64InterceptCtrl = HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS;
|
---|
858 |
|
---|
859 | /* CR0, CR4 reads must be intercepted, our shadow values are not necessarily the same as the guest's. */
|
---|
860 | pVmcb->ctrl.u16InterceptRdCRx = RT_BIT(0) | RT_BIT(4);
|
---|
861 |
|
---|
862 | /* CR0, CR4 writes must be intercepted for the same reasons as above. */
|
---|
863 | pVmcb->ctrl.u16InterceptWrCRx = RT_BIT(0) | RT_BIT(4);
|
---|
864 |
|
---|
865 | /* Intercept all DRx reads and writes by default. Changed later on. */
|
---|
866 | pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
|
---|
867 | pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
|
---|
868 |
|
---|
869 | /* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
|
---|
870 | pVmcb->ctrl.IntCtrl.n.u1VIntrMasking = 1;
|
---|
871 |
|
---|
872 | /* Ignore the priority in the virtual TPR. This is necessary for delivering PIC style (ExtInt) interrupts
|
---|
873 | and we currently deliver both PIC and APIC interrupts alike. See hmR0SvmInjectPendingEvent() */
|
---|
874 | pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR = 1;
|
---|
875 |
|
---|
876 | /* Set IO and MSR bitmap permission bitmap physical addresses. */
|
---|
877 | pVmcb->ctrl.u64IOPMPhysAddr = g_HCPhysIOBitmap;
|
---|
878 | pVmcb->ctrl.u64MSRPMPhysAddr = pVCpu->hm.s.svm.HCPhysMsrBitmap;
|
---|
879 |
|
---|
880 | /* LBR virtualization. */
|
---|
881 | if (fUseLbrVirt)
|
---|
882 | {
|
---|
883 | pVmcb->ctrl.LbrVirt.n.u1LbrVirt = fUseLbrVirt;
|
---|
884 | pVmcb->guest.u64DBGCTL = MSR_IA32_DEBUGCTL_LBR;
|
---|
885 | }
|
---|
886 | else
|
---|
887 | Assert(pVmcb->ctrl.LbrVirt.n.u1LbrVirt == 0);
|
---|
888 |
|
---|
889 | /* Virtualized VMSAVE/VMLOAD. */
|
---|
890 | pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload = fUseVirtVmsaveVmload;
|
---|
891 | if (!fUseVirtVmsaveVmload)
|
---|
892 | {
|
---|
893 | pVmcb->ctrl.u64InterceptCtrl |= SVM_CTRL_INTERCEPT_VMSAVE
|
---|
894 | | SVM_CTRL_INTERCEPT_VMLOAD;
|
---|
895 | }
|
---|
896 |
|
---|
897 | /* Initially all VMCB clean bits MBZ indicating that everything should be loaded from the VMCB in memory. */
|
---|
898 | Assert(pVmcb->ctrl.u32VmcbCleanBits == 0);
|
---|
899 |
|
---|
900 | /* The host ASID MBZ, for the guest start with 1. */
|
---|
901 | pVmcb->ctrl.TLBCtrl.n.u32ASID = 1;
|
---|
902 |
|
---|
903 | /*
|
---|
904 | * Setup the PAT MSR (applicable for Nested Paging only).
|
---|
905 | * The default value should be 0x0007040600070406ULL, but we want to treat all guest memory as WB,
|
---|
906 | * so choose type 6 for all PAT slots.
|
---|
907 | */
|
---|
908 | pVmcb->guest.u64GPAT = UINT64_C(0x0006060606060606);
|
---|
909 |
|
---|
910 | /* Setup Nested Paging. This doesn't change throughout the execution time of the VM. */
|
---|
911 | pVmcb->ctrl.NestedPaging.n.u1NestedPaging = pVM->hm.s.fNestedPaging;
|
---|
912 |
|
---|
913 | /* Without Nested Paging, we need additionally intercepts. */
|
---|
914 | if (!pVM->hm.s.fNestedPaging)
|
---|
915 | {
|
---|
916 | /* CR3 reads/writes must be intercepted; our shadow values differ from the guest values. */
|
---|
917 | pVmcb->ctrl.u16InterceptRdCRx |= RT_BIT(3);
|
---|
918 | pVmcb->ctrl.u16InterceptWrCRx |= RT_BIT(3);
|
---|
919 |
|
---|
920 | /* Intercept INVLPG and task switches (may change CR3, EFLAGS, LDT). */
|
---|
921 | pVmcb->ctrl.u64InterceptCtrl |= SVM_CTRL_INTERCEPT_INVLPG
|
---|
922 | | SVM_CTRL_INTERCEPT_TASK_SWITCH;
|
---|
923 |
|
---|
924 | /* Page faults must be intercepted to implement shadow paging. */
|
---|
925 | pVmcb->ctrl.u32InterceptXcpt |= RT_BIT(X86_XCPT_PF);
|
---|
926 | }
|
---|
927 |
|
---|
928 | #ifdef HMSVM_ALWAYS_TRAP_TASK_SWITCH
|
---|
929 | pVmcb->ctrl.u64InterceptCtrl |= SVM_CTRL_INTERCEPT_TASK_SWITCH;
|
---|
930 | #endif
|
---|
931 |
|
---|
932 | /* Apply the exceptions intercepts needed by the GIM provider. */
|
---|
933 | if (pVCpu->hm.s.fGIMTrapXcptUD)
|
---|
934 | pVmcb->ctrl.u32InterceptXcpt |= RT_BIT(X86_XCPT_UD);
|
---|
935 |
|
---|
936 | /* Setup Pause Filter for guest pause-loop (spinlock) exiting. */
|
---|
937 | if (fUsePauseFilter)
|
---|
938 | {
|
---|
939 | pVmcb->ctrl.u16PauseFilterCount = pVM->hm.s.svm.cPauseFilter;
|
---|
940 | if (fPauseFilterThreshold)
|
---|
941 | pVmcb->ctrl.u16PauseFilterThreshold = pVM->hm.s.svm.cPauseFilterThresholdTicks;
|
---|
942 | }
|
---|
943 |
|
---|
944 | /*
|
---|
945 | * The following MSRs are saved/restored automatically during the world-switch.
|
---|
946 | * Don't intercept guest read/write accesses to these MSRs.
|
---|
947 | */
|
---|
948 | uint8_t *pbMsrBitmap = (uint8_t *)pVCpu->hm.s.svm.pvMsrBitmap;
|
---|
949 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
950 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_CSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
951 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K6_STAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
952 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_SF_MASK, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
953 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_FS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
954 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
955 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_KERNEL_GS_BASE, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
956 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_IA32_SYSENTER_CS, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
957 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_IA32_SYSENTER_ESP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
958 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_IA32_SYSENTER_EIP, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
959 | }
|
---|
960 |
|
---|
961 | return VINF_SUCCESS;
|
---|
962 | }
|
---|
963 |
|
---|
964 |
|
---|
965 | /**
|
---|
966 | * Gets a pointer to the currently active guest or nested-guest VMCB.
|
---|
967 | *
|
---|
968 | * @returns Pointer to the current context VMCB.
|
---|
969 | * @param pVCpu The cross context virtual CPU structure.
|
---|
970 | * @param pCtx Pointer to the guest-CPU context.
|
---|
971 | */
|
---|
972 | DECLINLINE(PSVMVMCB) hmR0SvmGetCurrentVmcb(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
973 | {
|
---|
974 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
975 | if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
976 | return pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
|
---|
977 | #else
|
---|
978 | RT_NOREF(pCtx);
|
---|
979 | #endif
|
---|
980 | return pVCpu->hm.s.svm.pVmcb;
|
---|
981 | }
|
---|
982 |
|
---|
983 |
|
---|
984 | /**
|
---|
985 | * Invalidates a guest page by guest virtual address.
|
---|
986 | *
|
---|
987 | * @returns VBox status code.
|
---|
988 | * @param pVM The cross context VM structure.
|
---|
989 | * @param pVCpu The cross context virtual CPU structure.
|
---|
990 | * @param GCVirt Guest virtual address of the page to invalidate.
|
---|
991 | */
|
---|
992 | VMMR0DECL(int) SVMR0InvalidatePage(PVM pVM, PVMCPU pVCpu, RTGCPTR GCVirt)
|
---|
993 | {
|
---|
994 | AssertReturn(pVM, VERR_INVALID_PARAMETER);
|
---|
995 | Assert(pVM->hm.s.svm.fSupported);
|
---|
996 |
|
---|
997 | bool fFlushPending = pVM->hm.s.svm.fAlwaysFlushTLB || VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_TLB_FLUSH);
|
---|
998 |
|
---|
999 | /* Skip it if a TLB flush is already pending. */
|
---|
1000 | if (!fFlushPending)
|
---|
1001 | {
|
---|
1002 | Log4(("SVMR0InvalidatePage %RGv\n", GCVirt));
|
---|
1003 |
|
---|
1004 | PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
|
---|
1005 | PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
1006 | AssertMsgReturn(pVmcb, ("Invalid pVmcb!\n"), VERR_SVM_INVALID_PVMCB);
|
---|
1007 |
|
---|
1008 | #if HC_ARCH_BITS == 32
|
---|
1009 | /* If we get a flush in 64-bit guest mode, then force a full TLB flush. INVLPGA takes only 32-bit addresses. */
|
---|
1010 | if (CPUMIsGuestInLongMode(pVCpu))
|
---|
1011 | VMCPU_FF_SET(pVCpu, VMCPU_FF_TLB_FLUSH);
|
---|
1012 | else
|
---|
1013 | #endif
|
---|
1014 | {
|
---|
1015 | SVMR0InvlpgA(GCVirt, pVmcb->ctrl.TLBCtrl.n.u32ASID);
|
---|
1016 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbInvlpgVirt);
|
---|
1017 | }
|
---|
1018 | }
|
---|
1019 | return VINF_SUCCESS;
|
---|
1020 | }
|
---|
1021 |
|
---|
1022 |
|
---|
1023 | /**
|
---|
1024 | * Flushes the appropriate tagged-TLB entries.
|
---|
1025 | *
|
---|
1026 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1027 | * @param pCtx Pointer to the guest-CPU or nested-guest-CPU context.
|
---|
1028 | * @param pVmcb Pointer to the VM control block.
|
---|
1029 | */
|
---|
1030 | static void hmR0SvmFlushTaggedTlb(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMVMCB pVmcb)
|
---|
1031 | {
|
---|
1032 | #ifndef VBOX_WITH_NESTED_HWVIRT
|
---|
1033 | RT_NOREF(pCtx);
|
---|
1034 | #endif
|
---|
1035 |
|
---|
1036 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
1037 | PHMGLOBALCPUINFO pCpu = hmR0GetCurrentCpu();
|
---|
1038 |
|
---|
1039 | /*
|
---|
1040 | * Force a TLB flush for the first world switch if the current CPU differs from the one we ran on last.
|
---|
1041 | * This can happen both for start & resume due to long jumps back to ring-3.
|
---|
1042 | *
|
---|
1043 | * We also force a TLB flush every time when executing a nested-guest VCPU as there is no correlation
|
---|
1044 | * between it and the physical CPU.
|
---|
1045 | *
|
---|
1046 | * If the TLB flush count changed, another VM (VCPU rather) has hit the ASID limit while flushing the TLB,
|
---|
1047 | * so we cannot reuse the ASIDs without flushing.
|
---|
1048 | */
|
---|
1049 | bool fNewAsid = false;
|
---|
1050 | Assert(pCpu->idCpu != NIL_RTCPUID);
|
---|
1051 | if ( pVCpu->hm.s.idLastCpu != pCpu->idCpu
|
---|
1052 | || pVCpu->hm.s.cTlbFlushes != pCpu->cTlbFlushes
|
---|
1053 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
1054 | || CPUMIsGuestInSvmNestedHwVirtMode(pCtx)
|
---|
1055 | #endif
|
---|
1056 | )
|
---|
1057 | {
|
---|
1058 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlbWorldSwitch);
|
---|
1059 | pVCpu->hm.s.fForceTLBFlush = true;
|
---|
1060 | fNewAsid = true;
|
---|
1061 | }
|
---|
1062 |
|
---|
1063 | /* Set TLB flush state as checked until we return from the world switch. */
|
---|
1064 | ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true);
|
---|
1065 |
|
---|
1066 | /* Check for explicit TLB flushes. */
|
---|
1067 | if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_TLB_FLUSH))
|
---|
1068 | {
|
---|
1069 | pVCpu->hm.s.fForceTLBFlush = true;
|
---|
1070 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushTlb);
|
---|
1071 | }
|
---|
1072 |
|
---|
1073 | /*
|
---|
1074 | * If the AMD CPU erratum 170, We need to flush the entire TLB for each world switch. Sad.
|
---|
1075 | * This Host CPU requirement takes precedence.
|
---|
1076 | */
|
---|
1077 | if (pVM->hm.s.svm.fAlwaysFlushTLB)
|
---|
1078 | {
|
---|
1079 | pCpu->uCurrentAsid = 1;
|
---|
1080 | pVCpu->hm.s.uCurrentAsid = 1;
|
---|
1081 | pVCpu->hm.s.cTlbFlushes = pCpu->cTlbFlushes;
|
---|
1082 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
|
---|
1083 |
|
---|
1084 | /* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
|
---|
1085 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
|
---|
1086 |
|
---|
1087 | /* Keep track of last CPU ID even when flushing all the time. */
|
---|
1088 | if (fNewAsid)
|
---|
1089 | pVCpu->hm.s.idLastCpu = pCpu->idCpu;
|
---|
1090 | }
|
---|
1091 | else
|
---|
1092 | {
|
---|
1093 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_NOTHING;
|
---|
1094 | if (pVCpu->hm.s.fForceTLBFlush)
|
---|
1095 | {
|
---|
1096 | /* Clear the VMCB Clean Bit for NP while flushing the TLB. See @bugref{7152}. */
|
---|
1097 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
|
---|
1098 |
|
---|
1099 | if (fNewAsid)
|
---|
1100 | {
|
---|
1101 | ++pCpu->uCurrentAsid;
|
---|
1102 |
|
---|
1103 | bool fHitASIDLimit = false;
|
---|
1104 | if (pCpu->uCurrentAsid >= pVM->hm.s.uMaxAsid)
|
---|
1105 | {
|
---|
1106 | pCpu->uCurrentAsid = 1; /* Wraparound at 1; host uses 0 */
|
---|
1107 | pCpu->cTlbFlushes++; /* All VCPUs that run on this host CPU must use a new ASID. */
|
---|
1108 | fHitASIDLimit = true;
|
---|
1109 | }
|
---|
1110 |
|
---|
1111 | if ( fHitASIDLimit
|
---|
1112 | || pCpu->fFlushAsidBeforeUse)
|
---|
1113 | {
|
---|
1114 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
|
---|
1115 | pCpu->fFlushAsidBeforeUse = false;
|
---|
1116 | }
|
---|
1117 |
|
---|
1118 | pVCpu->hm.s.uCurrentAsid = pCpu->uCurrentAsid;
|
---|
1119 | pVCpu->hm.s.idLastCpu = pCpu->idCpu;
|
---|
1120 | pVCpu->hm.s.cTlbFlushes = pCpu->cTlbFlushes;
|
---|
1121 | }
|
---|
1122 | else
|
---|
1123 | {
|
---|
1124 | if (pVM->hm.s.svm.u32Features & X86_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID)
|
---|
1125 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_SINGLE_CONTEXT;
|
---|
1126 | else
|
---|
1127 | pVmcb->ctrl.TLBCtrl.n.u8TLBFlush = SVM_TLB_FLUSH_ENTIRE;
|
---|
1128 | }
|
---|
1129 |
|
---|
1130 | pVCpu->hm.s.fForceTLBFlush = false;
|
---|
1131 | }
|
---|
1132 | }
|
---|
1133 |
|
---|
1134 | /* Update VMCB with the ASID. */
|
---|
1135 | if (pVmcb->ctrl.TLBCtrl.n.u32ASID != pVCpu->hm.s.uCurrentAsid)
|
---|
1136 | {
|
---|
1137 | pVmcb->ctrl.TLBCtrl.n.u32ASID = pVCpu->hm.s.uCurrentAsid;
|
---|
1138 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_ASID;
|
---|
1139 | }
|
---|
1140 |
|
---|
1141 | AssertMsg(pVCpu->hm.s.idLastCpu == pCpu->idCpu,
|
---|
1142 | ("vcpu idLastCpu=%u pcpu idCpu=%u\n", pVCpu->hm.s.idLastCpu, pCpu->idCpu));
|
---|
1143 | AssertMsg(pVCpu->hm.s.cTlbFlushes == pCpu->cTlbFlushes,
|
---|
1144 | ("Flush count mismatch for cpu %u (%u vs %u)\n", pCpu->idCpu, pVCpu->hm.s.cTlbFlushes, pCpu->cTlbFlushes));
|
---|
1145 | AssertMsg(pCpu->uCurrentAsid >= 1 && pCpu->uCurrentAsid < pVM->hm.s.uMaxAsid,
|
---|
1146 | ("cpu%d uCurrentAsid = %x\n", pCpu->idCpu, pCpu->uCurrentAsid));
|
---|
1147 | AssertMsg(pVCpu->hm.s.uCurrentAsid >= 1 && pVCpu->hm.s.uCurrentAsid < pVM->hm.s.uMaxAsid,
|
---|
1148 | ("cpu%d VM uCurrentAsid = %x\n", pCpu->idCpu, pVCpu->hm.s.uCurrentAsid));
|
---|
1149 |
|
---|
1150 | #ifdef VBOX_WITH_STATISTICS
|
---|
1151 | if (pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_NOTHING)
|
---|
1152 | STAM_COUNTER_INC(&pVCpu->hm.s.StatNoFlushTlbWorldSwitch);
|
---|
1153 | else if ( pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT
|
---|
1154 | || pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_SINGLE_CONTEXT_RETAIN_GLOBALS)
|
---|
1155 | {
|
---|
1156 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushAsid);
|
---|
1157 | }
|
---|
1158 | else
|
---|
1159 | {
|
---|
1160 | Assert(pVmcb->ctrl.TLBCtrl.n.u8TLBFlush == SVM_TLB_FLUSH_ENTIRE);
|
---|
1161 | STAM_COUNTER_INC(&pVCpu->hm.s.StatFlushEntire);
|
---|
1162 | }
|
---|
1163 | #endif
|
---|
1164 | }
|
---|
1165 |
|
---|
1166 |
|
---|
1167 | /** @name 64-bit guest on 32-bit host OS helper functions.
|
---|
1168 | *
|
---|
1169 | * The host CPU is still 64-bit capable but the host OS is running in 32-bit
|
---|
1170 | * mode (code segment, paging). These wrappers/helpers perform the necessary
|
---|
1171 | * bits for the 32->64 switcher.
|
---|
1172 | *
|
---|
1173 | * @{ */
|
---|
1174 | #if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS)
|
---|
1175 | /**
|
---|
1176 | * Prepares for and executes VMRUN (64-bit guests on a 32-bit host).
|
---|
1177 | *
|
---|
1178 | * @returns VBox status code.
|
---|
1179 | * @param HCPhysVmcbHost Physical address of host VMCB.
|
---|
1180 | * @param HCPhysVmcb Physical address of the VMCB.
|
---|
1181 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1182 | * @param pVM The cross context VM structure.
|
---|
1183 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1184 | */
|
---|
1185 | DECLASM(int) SVMR0VMSwitcherRun64(RTHCPHYS HCPhysVmcbHost, RTHCPHYS HCPhysVmcb, PCPUMCTX pCtx, PVM pVM, PVMCPU pVCpu)
|
---|
1186 | {
|
---|
1187 | uint32_t aParam[8];
|
---|
1188 | aParam[0] = RT_LO_U32(HCPhysVmcbHost); /* Param 1: HCPhysVmcbHost - Lo. */
|
---|
1189 | aParam[1] = RT_HI_U32(HCPhysVmcbHost); /* Param 1: HCPhysVmcbHost - Hi. */
|
---|
1190 | aParam[2] = RT_LO_U32(HCPhysVmcb); /* Param 2: HCPhysVmcb - Lo. */
|
---|
1191 | aParam[3] = RT_HI_U32(HCPhysVmcb); /* Param 2: HCPhysVmcb - Hi. */
|
---|
1192 | aParam[4] = VM_RC_ADDR(pVM, pVM);
|
---|
1193 | aParam[5] = 0;
|
---|
1194 | aParam[6] = VM_RC_ADDR(pVM, pVCpu);
|
---|
1195 | aParam[7] = 0;
|
---|
1196 |
|
---|
1197 | return SVMR0Execute64BitsHandler(pVM, pVCpu, pCtx, HM64ON32OP_SVMRCVMRun64, RT_ELEMENTS(aParam), &aParam[0]);
|
---|
1198 | }
|
---|
1199 |
|
---|
1200 |
|
---|
1201 | /**
|
---|
1202 | * Executes the specified VMRUN handler in 64-bit mode.
|
---|
1203 | *
|
---|
1204 | * @returns VBox status code.
|
---|
1205 | * @param pVM The cross context VM structure.
|
---|
1206 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1207 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1208 | * @param enmOp The operation to perform.
|
---|
1209 | * @param cParams Number of parameters.
|
---|
1210 | * @param paParam Array of 32-bit parameters.
|
---|
1211 | */
|
---|
1212 | VMMR0DECL(int) SVMR0Execute64BitsHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, HM64ON32OP enmOp,
|
---|
1213 | uint32_t cParams, uint32_t *paParam)
|
---|
1214 | {
|
---|
1215 | AssertReturn(pVM->hm.s.pfnHost32ToGuest64R0, VERR_HM_NO_32_TO_64_SWITCHER);
|
---|
1216 | Assert(enmOp > HM64ON32OP_INVALID && enmOp < HM64ON32OP_END);
|
---|
1217 |
|
---|
1218 | NOREF(pCtx);
|
---|
1219 |
|
---|
1220 | /* Disable interrupts. */
|
---|
1221 | RTHCUINTREG uOldEFlags = ASMIntDisableFlags();
|
---|
1222 |
|
---|
1223 | #ifdef VBOX_WITH_VMMR0_DISABLE_LAPIC_NMI
|
---|
1224 | RTCPUID idHostCpu = RTMpCpuId();
|
---|
1225 | CPUMR0SetLApic(pVCpu, idHostCpu);
|
---|
1226 | #endif
|
---|
1227 |
|
---|
1228 | CPUMSetHyperESP(pVCpu, VMMGetStackRC(pVCpu));
|
---|
1229 | CPUMSetHyperEIP(pVCpu, enmOp);
|
---|
1230 | for (int i = (int)cParams - 1; i >= 0; i--)
|
---|
1231 | CPUMPushHyper(pVCpu, paParam[i]);
|
---|
1232 |
|
---|
1233 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatWorldSwitch3264, z);
|
---|
1234 | /* Call the switcher. */
|
---|
1235 | int rc = pVM->hm.s.pfnHost32ToGuest64R0(pVM, RT_OFFSETOF(VM, aCpus[pVCpu->idCpu].cpum) - RT_OFFSETOF(VM, cpum));
|
---|
1236 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatWorldSwitch3264, z);
|
---|
1237 |
|
---|
1238 | /* Restore interrupts. */
|
---|
1239 | ASMSetFlags(uOldEFlags);
|
---|
1240 | return rc;
|
---|
1241 | }
|
---|
1242 |
|
---|
1243 | #endif /* HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) */
|
---|
1244 | /** @} */
|
---|
1245 |
|
---|
1246 |
|
---|
1247 | /**
|
---|
1248 | * Adds an exception to the intercept exception bitmap in the VMCB and updates
|
---|
1249 | * the corresponding VMCB Clean bit.
|
---|
1250 | *
|
---|
1251 | * @param pVmcb Pointer to the VM control block.
|
---|
1252 | * @param u32Xcpt The value of the exception (X86_XCPT_*).
|
---|
1253 | */
|
---|
1254 | DECLINLINE(void) hmR0SvmAddXcptIntercept(PSVMVMCB pVmcb, uint32_t u32Xcpt)
|
---|
1255 | {
|
---|
1256 | if (!(pVmcb->ctrl.u32InterceptXcpt & RT_BIT(u32Xcpt)))
|
---|
1257 | {
|
---|
1258 | pVmcb->ctrl.u32InterceptXcpt |= RT_BIT(u32Xcpt);
|
---|
1259 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
1260 | }
|
---|
1261 | }
|
---|
1262 |
|
---|
1263 |
|
---|
1264 | /**
|
---|
1265 | * Removes an exception from the intercept-exception bitmap in the VMCB and
|
---|
1266 | * updates the corresponding VMCB Clean bit.
|
---|
1267 | *
|
---|
1268 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1269 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1270 | * @param pVmcb Pointer to the VM control block.
|
---|
1271 | * @param u32Xcpt The value of the exception (X86_XCPT_*).
|
---|
1272 | *
|
---|
1273 | * @remarks This takes into account if we're executing a nested-guest and only
|
---|
1274 | * removes the exception intercept if both the guest -and- nested-guest
|
---|
1275 | * are not intercepting it.
|
---|
1276 | */
|
---|
1277 | DECLINLINE(void) hmR0SvmRemoveXcptIntercept(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMVMCB pVmcb, uint32_t u32Xcpt)
|
---|
1278 | {
|
---|
1279 | Assert(u32Xcpt != X86_XCPT_DB);
|
---|
1280 | Assert(u32Xcpt != X86_XCPT_AC);
|
---|
1281 | #ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
|
---|
1282 | if (pVmcb->ctrl.u32InterceptXcpt & RT_BIT(u32Xcpt))
|
---|
1283 | {
|
---|
1284 | bool fRemoveXcpt = true;
|
---|
1285 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
1286 | /* Only remove the intercept if the nested-guest is also not intercepting it! */
|
---|
1287 | if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
1288 | {
|
---|
1289 | Assert(pCtx->hwvirt.svm.fHMCachedVmcb); NOREF(pCtx);
|
---|
1290 | PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = &pVCpu->hm.s.svm.NstGstVmcbCache;
|
---|
1291 | fRemoveXcpt = !(pVmcbNstGstCache->u32InterceptXcpt & RT_BIT(u32Xcpt));
|
---|
1292 | }
|
---|
1293 | #else
|
---|
1294 | RT_NOREF2(pVCpu, pCtx);
|
---|
1295 | #endif
|
---|
1296 | if (fRemoveXcpt)
|
---|
1297 | {
|
---|
1298 | pVmcb->ctrl.u32InterceptXcpt &= ~RT_BIT(u32Xcpt);
|
---|
1299 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
1300 | }
|
---|
1301 | }
|
---|
1302 | #else
|
---|
1303 | RT_NOREF3(pVCpu, pCtx, pVmcb);
|
---|
1304 | #endif
|
---|
1305 | }
|
---|
1306 |
|
---|
1307 |
|
---|
1308 | /**
|
---|
1309 | * Loads the guest (or nested-guest) CR0 control register into the guest-state
|
---|
1310 | * area in the VMCB.
|
---|
1311 | *
|
---|
1312 | * Although the guest CR0 is a separate field in the VMCB we have to consider
|
---|
1313 | * the FPU state itself which is shared between the host and the guest.
|
---|
1314 | *
|
---|
1315 | * @returns VBox status code.
|
---|
1316 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1317 | * @param pVmcb Pointer to the VM control block.
|
---|
1318 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1319 | *
|
---|
1320 | * @remarks No-long-jump zone!!!
|
---|
1321 | */
|
---|
1322 | static void hmR0SvmLoadSharedCR0(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1323 | {
|
---|
1324 | uint64_t u64GuestCR0 = pCtx->cr0;
|
---|
1325 |
|
---|
1326 | /* Always enable caching. */
|
---|
1327 | u64GuestCR0 &= ~(X86_CR0_CD | X86_CR0_NW);
|
---|
1328 |
|
---|
1329 | /*
|
---|
1330 | * When Nested Paging is not available use shadow page tables and intercept #PFs (the latter done in SVMR0SetupVM()).
|
---|
1331 | */
|
---|
1332 | if (!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging)
|
---|
1333 | {
|
---|
1334 | u64GuestCR0 |= X86_CR0_PG; /* When Nested Paging is not available, use shadow page tables. */
|
---|
1335 | u64GuestCR0 |= X86_CR0_WP; /* Guest CPL 0 writes to its read-only pages should cause a #PF #VMEXIT. */
|
---|
1336 | }
|
---|
1337 |
|
---|
1338 | /*
|
---|
1339 | * Guest FPU bits.
|
---|
1340 | */
|
---|
1341 | bool fInterceptNM = false;
|
---|
1342 | bool fInterceptMF = false;
|
---|
1343 | u64GuestCR0 |= X86_CR0_NE; /* Use internal x87 FPU exceptions handling rather than external interrupts. */
|
---|
1344 | if (CPUMIsGuestFPUStateActive(pVCpu))
|
---|
1345 | {
|
---|
1346 | /* Catch floating point exceptions if we need to report them to the guest in a different way. */
|
---|
1347 | if (!(pCtx->cr0 & X86_CR0_NE))
|
---|
1348 | {
|
---|
1349 | Log4(("hmR0SvmLoadSharedCR0: Intercepting Guest CR0.MP Old-style FPU handling!!!\n"));
|
---|
1350 | fInterceptMF = true;
|
---|
1351 | }
|
---|
1352 | }
|
---|
1353 | else
|
---|
1354 | {
|
---|
1355 | fInterceptNM = true; /* Guest FPU inactive, #VMEXIT on #NM for lazy FPU loading. */
|
---|
1356 | u64GuestCR0 |= X86_CR0_TS /* Guest can task switch quickly and do lazy FPU syncing. */
|
---|
1357 | | X86_CR0_MP; /* FWAIT/WAIT should not ignore CR0.TS and should generate #NM. */
|
---|
1358 | }
|
---|
1359 |
|
---|
1360 | /*
|
---|
1361 | * Update the exception intercept bitmap.
|
---|
1362 | */
|
---|
1363 | if (fInterceptNM)
|
---|
1364 | hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_NM);
|
---|
1365 | else
|
---|
1366 | hmR0SvmRemoveXcptIntercept(pVCpu, pCtx, pVmcb, X86_XCPT_NM);
|
---|
1367 |
|
---|
1368 | if (fInterceptMF)
|
---|
1369 | hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_MF);
|
---|
1370 | else
|
---|
1371 | hmR0SvmRemoveXcptIntercept(pVCpu, pCtx, pVmcb, X86_XCPT_MF);
|
---|
1372 |
|
---|
1373 | pVmcb->guest.u64CR0 = u64GuestCR0;
|
---|
1374 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1375 | }
|
---|
1376 |
|
---|
1377 |
|
---|
1378 | /**
|
---|
1379 | * Loads the guest/nested-guest control registers (CR2, CR3, CR4) into the VMCB.
|
---|
1380 | *
|
---|
1381 | * @returns VBox status code.
|
---|
1382 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1383 | * @param pVmcb Pointer to the VM control block.
|
---|
1384 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1385 | *
|
---|
1386 | * @remarks No-long-jump zone!!!
|
---|
1387 | */
|
---|
1388 | static int hmR0SvmLoadGuestControlRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1389 | {
|
---|
1390 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
1391 |
|
---|
1392 | /*
|
---|
1393 | * Guest CR2.
|
---|
1394 | */
|
---|
1395 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR2))
|
---|
1396 | {
|
---|
1397 | pVmcb->guest.u64CR2 = pCtx->cr2;
|
---|
1398 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CR2;
|
---|
1399 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR2);
|
---|
1400 | }
|
---|
1401 |
|
---|
1402 | /*
|
---|
1403 | * Guest CR3.
|
---|
1404 | */
|
---|
1405 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR3))
|
---|
1406 | {
|
---|
1407 | if (pVM->hm.s.fNestedPaging)
|
---|
1408 | {
|
---|
1409 | PGMMODE enmShwPagingMode;
|
---|
1410 | #if HC_ARCH_BITS == 32
|
---|
1411 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
1412 | enmShwPagingMode = PGMMODE_AMD64_NX;
|
---|
1413 | else
|
---|
1414 | #endif
|
---|
1415 | enmShwPagingMode = PGMGetHostMode(pVM);
|
---|
1416 |
|
---|
1417 | pVmcb->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVCpu, enmShwPagingMode);
|
---|
1418 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_NP;
|
---|
1419 | Assert(pVmcb->ctrl.u64NestedPagingCR3);
|
---|
1420 | pVmcb->guest.u64CR3 = pCtx->cr3;
|
---|
1421 | }
|
---|
1422 | else
|
---|
1423 | {
|
---|
1424 | pVmcb->guest.u64CR3 = PGMGetHyperCR3(pVCpu);
|
---|
1425 | Log4(("hmR0SvmLoadGuestControlRegs: CR3=%#RX64 (HyperCR3=%#RX64)\n", pCtx->cr3, pVmcb->guest.u64CR3));
|
---|
1426 | }
|
---|
1427 |
|
---|
1428 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1429 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR3);
|
---|
1430 | }
|
---|
1431 |
|
---|
1432 | /*
|
---|
1433 | * Guest CR4.
|
---|
1434 | * ASSUMES this is done everytime we get in from ring-3! (XCR0)
|
---|
1435 | */
|
---|
1436 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR4))
|
---|
1437 | {
|
---|
1438 | uint64_t u64GuestCR4 = pCtx->cr4;
|
---|
1439 | Assert(RT_HI_U32(u64GuestCR4) == 0);
|
---|
1440 | if (!pVM->hm.s.fNestedPaging)
|
---|
1441 | {
|
---|
1442 | switch (pVCpu->hm.s.enmShadowMode)
|
---|
1443 | {
|
---|
1444 | case PGMMODE_REAL:
|
---|
1445 | case PGMMODE_PROTECTED: /* Protected mode, no paging. */
|
---|
1446 | AssertFailed();
|
---|
1447 | return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
|
---|
1448 |
|
---|
1449 | case PGMMODE_32_BIT: /* 32-bit paging. */
|
---|
1450 | u64GuestCR4 &= ~X86_CR4_PAE;
|
---|
1451 | break;
|
---|
1452 |
|
---|
1453 | case PGMMODE_PAE: /* PAE paging. */
|
---|
1454 | case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
|
---|
1455 | /** Must use PAE paging as we could use physical memory > 4 GB */
|
---|
1456 | u64GuestCR4 |= X86_CR4_PAE;
|
---|
1457 | break;
|
---|
1458 |
|
---|
1459 | case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
|
---|
1460 | case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
|
---|
1461 | #ifdef VBOX_ENABLE_64_BITS_GUESTS
|
---|
1462 | break;
|
---|
1463 | #else
|
---|
1464 | AssertFailed();
|
---|
1465 | return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
|
---|
1466 | #endif
|
---|
1467 |
|
---|
1468 | default: /* shut up gcc */
|
---|
1469 | AssertFailed();
|
---|
1470 | return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
|
---|
1471 | }
|
---|
1472 | }
|
---|
1473 |
|
---|
1474 | pVmcb->guest.u64CR4 = u64GuestCR4;
|
---|
1475 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1476 |
|
---|
1477 | /* Whether to save/load/restore XCR0 during world switch depends on CR4.OSXSAVE and host+guest XCR0. */
|
---|
1478 | pVCpu->hm.s.fLoadSaveGuestXcr0 = (u64GuestCR4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
|
---|
1479 |
|
---|
1480 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR4);
|
---|
1481 | }
|
---|
1482 |
|
---|
1483 | return VINF_SUCCESS;
|
---|
1484 | }
|
---|
1485 |
|
---|
1486 |
|
---|
1487 | /**
|
---|
1488 | * Loads the guest segment registers into the VMCB.
|
---|
1489 | *
|
---|
1490 | * @returns VBox status code.
|
---|
1491 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1492 | * @param pVmcb Pointer to the VM control block.
|
---|
1493 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1494 | *
|
---|
1495 | * @remarks No-long-jump zone!!!
|
---|
1496 | */
|
---|
1497 | static void hmR0SvmLoadGuestSegmentRegs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1498 | {
|
---|
1499 | /* Guest Segment registers: CS, SS, DS, ES, FS, GS. */
|
---|
1500 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS))
|
---|
1501 | {
|
---|
1502 | HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, CS, cs);
|
---|
1503 | HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, SS, ss);
|
---|
1504 | HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, DS, ds);
|
---|
1505 | HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, ES, es);
|
---|
1506 | HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, FS, fs);
|
---|
1507 | HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, GS, gs);
|
---|
1508 |
|
---|
1509 | pVmcb->guest.u8CPL = pCtx->ss.Attr.n.u2Dpl;
|
---|
1510 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_SEG;
|
---|
1511 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS);
|
---|
1512 | }
|
---|
1513 |
|
---|
1514 | /* Guest TR. */
|
---|
1515 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_TR))
|
---|
1516 | {
|
---|
1517 | HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, TR, tr);
|
---|
1518 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_TR);
|
---|
1519 | }
|
---|
1520 |
|
---|
1521 | /* Guest LDTR. */
|
---|
1522 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_LDTR))
|
---|
1523 | {
|
---|
1524 | HMSVM_SEG_REG_COPY_TO_VMCB(pCtx, &pVmcb->guest, LDTR, ldtr);
|
---|
1525 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_LDTR);
|
---|
1526 | }
|
---|
1527 |
|
---|
1528 | /* Guest GDTR. */
|
---|
1529 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_GDTR))
|
---|
1530 | {
|
---|
1531 | pVmcb->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
|
---|
1532 | pVmcb->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
|
---|
1533 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
|
---|
1534 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_GDTR);
|
---|
1535 | }
|
---|
1536 |
|
---|
1537 | /* Guest IDTR. */
|
---|
1538 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_IDTR))
|
---|
1539 | {
|
---|
1540 | pVmcb->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
|
---|
1541 | pVmcb->guest.IDTR.u64Base = pCtx->idtr.pIdt;
|
---|
1542 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DT;
|
---|
1543 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_IDTR);
|
---|
1544 | }
|
---|
1545 | }
|
---|
1546 |
|
---|
1547 |
|
---|
1548 | /**
|
---|
1549 | * Loads the guest MSRs into the VMCB.
|
---|
1550 | *
|
---|
1551 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1552 | * @param pVmcb Pointer to the VM control block.
|
---|
1553 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1554 | *
|
---|
1555 | * @remarks No-long-jump zone!!!
|
---|
1556 | */
|
---|
1557 | static void hmR0SvmLoadGuestMsrs(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1558 | {
|
---|
1559 | /* Guest Sysenter MSRs. */
|
---|
1560 | pVmcb->guest.u64SysEnterCS = pCtx->SysEnter.cs;
|
---|
1561 | pVmcb->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
|
---|
1562 | pVmcb->guest.u64SysEnterESP = pCtx->SysEnter.esp;
|
---|
1563 |
|
---|
1564 | /*
|
---|
1565 | * Guest EFER MSR.
|
---|
1566 | * AMD-V requires guest EFER.SVME to be set. Weird.
|
---|
1567 | * See AMD spec. 15.5.1 "Basic Operation" | "Canonicalization and Consistency Checks".
|
---|
1568 | */
|
---|
1569 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_EFER_MSR))
|
---|
1570 | {
|
---|
1571 | pVmcb->guest.u64EFER = pCtx->msrEFER | MSR_K6_EFER_SVME;
|
---|
1572 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1573 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_EFER_MSR);
|
---|
1574 | }
|
---|
1575 |
|
---|
1576 | /* 64-bit MSRs. */
|
---|
1577 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
1578 | {
|
---|
1579 | pVmcb->guest.FS.u64Base = pCtx->fs.u64Base;
|
---|
1580 | pVmcb->guest.GS.u64Base = pCtx->gs.u64Base;
|
---|
1581 | }
|
---|
1582 | else
|
---|
1583 | {
|
---|
1584 | /* If the guest isn't in 64-bit mode, clear MSR_K6_LME bit from guest EFER otherwise AMD-V expects amd64 shadow paging. */
|
---|
1585 | if (pCtx->msrEFER & MSR_K6_EFER_LME)
|
---|
1586 | {
|
---|
1587 | pVmcb->guest.u64EFER &= ~MSR_K6_EFER_LME;
|
---|
1588 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_CRX_EFER;
|
---|
1589 | }
|
---|
1590 | }
|
---|
1591 |
|
---|
1592 | /** @todo The following are used in 64-bit only (SYSCALL/SYSRET) but they might
|
---|
1593 | * be writable in 32-bit mode. Clarify with AMD spec. */
|
---|
1594 | pVmcb->guest.u64STAR = pCtx->msrSTAR;
|
---|
1595 | pVmcb->guest.u64LSTAR = pCtx->msrLSTAR;
|
---|
1596 | pVmcb->guest.u64CSTAR = pCtx->msrCSTAR;
|
---|
1597 | pVmcb->guest.u64SFMASK = pCtx->msrSFMASK;
|
---|
1598 | pVmcb->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE;
|
---|
1599 | }
|
---|
1600 |
|
---|
1601 |
|
---|
1602 | /**
|
---|
1603 | * Loads the guest (or nested-guest) debug state into the VMCB and programs the
|
---|
1604 | * necessary intercepts accordingly.
|
---|
1605 | *
|
---|
1606 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1607 | * @param pVmcb Pointer to the VM control block.
|
---|
1608 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1609 | *
|
---|
1610 | * @remarks No-long-jump zone!!!
|
---|
1611 | * @remarks Requires EFLAGS to be up-to-date in the VMCB!
|
---|
1612 | */
|
---|
1613 | static void hmR0SvmLoadSharedDebugState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1614 | {
|
---|
1615 | bool fInterceptMovDRx = false;
|
---|
1616 |
|
---|
1617 | /*
|
---|
1618 | * Anyone single stepping on the host side? If so, we'll have to use the
|
---|
1619 | * trap flag in the guest EFLAGS since AMD-V doesn't have a trap flag on
|
---|
1620 | * the VMM level like the VT-x implementations does.
|
---|
1621 | */
|
---|
1622 | bool const fStepping = pVCpu->hm.s.fSingleInstruction || DBGFIsStepping(pVCpu);
|
---|
1623 | if (fStepping)
|
---|
1624 | {
|
---|
1625 | pVCpu->hm.s.fClearTrapFlag = true;
|
---|
1626 | pVmcb->guest.u64RFlags |= X86_EFL_TF;
|
---|
1627 | fInterceptMovDRx = true; /* Need clean DR6, no guest mess. */
|
---|
1628 | }
|
---|
1629 |
|
---|
1630 | if ( fStepping
|
---|
1631 | || (CPUMGetHyperDR7(pVCpu) & X86_DR7_ENABLED_MASK))
|
---|
1632 | {
|
---|
1633 | /*
|
---|
1634 | * Use the combined guest and host DRx values found in the hypervisor
|
---|
1635 | * register set because the debugger has breakpoints active or someone
|
---|
1636 | * is single stepping on the host side.
|
---|
1637 | *
|
---|
1638 | * Note! DBGF expects a clean DR6 state before executing guest code.
|
---|
1639 | */
|
---|
1640 | #if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
|
---|
1641 | if ( CPUMIsGuestInLongModeEx(pCtx)
|
---|
1642 | && !CPUMIsHyperDebugStateActivePending(pVCpu))
|
---|
1643 | {
|
---|
1644 | CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
|
---|
1645 | Assert(!CPUMIsGuestDebugStateActivePending(pVCpu));
|
---|
1646 | Assert(CPUMIsHyperDebugStateActivePending(pVCpu));
|
---|
1647 | }
|
---|
1648 | else
|
---|
1649 | #endif
|
---|
1650 | if (!CPUMIsHyperDebugStateActive(pVCpu))
|
---|
1651 | {
|
---|
1652 | CPUMR0LoadHyperDebugState(pVCpu, false /* include DR6 */);
|
---|
1653 | Assert(!CPUMIsGuestDebugStateActive(pVCpu));
|
---|
1654 | Assert(CPUMIsHyperDebugStateActive(pVCpu));
|
---|
1655 | }
|
---|
1656 |
|
---|
1657 | /* Update DR6 & DR7. (The other DRx values are handled by CPUM one way or the other.) */
|
---|
1658 | if ( pVmcb->guest.u64DR6 != X86_DR6_INIT_VAL
|
---|
1659 | || pVmcb->guest.u64DR7 != CPUMGetHyperDR7(pVCpu))
|
---|
1660 | {
|
---|
1661 | pVmcb->guest.u64DR7 = CPUMGetHyperDR7(pVCpu);
|
---|
1662 | pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
|
---|
1663 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
|
---|
1664 | pVCpu->hm.s.fUsingHyperDR7 = true;
|
---|
1665 | }
|
---|
1666 |
|
---|
1667 | /** @todo If we cared, we could optimize to allow the guest to read registers
|
---|
1668 | * with the same values. */
|
---|
1669 | fInterceptMovDRx = true;
|
---|
1670 | Log5(("hmR0SvmLoadSharedDebugState: Loaded hyper DRx\n"));
|
---|
1671 | }
|
---|
1672 | else
|
---|
1673 | {
|
---|
1674 | /*
|
---|
1675 | * Update DR6, DR7 with the guest values if necessary.
|
---|
1676 | */
|
---|
1677 | if ( pVmcb->guest.u64DR7 != pCtx->dr[7]
|
---|
1678 | || pVmcb->guest.u64DR6 != pCtx->dr[6])
|
---|
1679 | {
|
---|
1680 | pVmcb->guest.u64DR7 = pCtx->dr[7];
|
---|
1681 | pVmcb->guest.u64DR6 = pCtx->dr[6];
|
---|
1682 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
|
---|
1683 | pVCpu->hm.s.fUsingHyperDR7 = false;
|
---|
1684 | }
|
---|
1685 |
|
---|
1686 | /*
|
---|
1687 | * If the guest has enabled debug registers, we need to load them prior to
|
---|
1688 | * executing guest code so they'll trigger at the right time.
|
---|
1689 | */
|
---|
1690 | if (pCtx->dr[7] & (X86_DR7_ENABLED_MASK | X86_DR7_GD)) /** @todo Why GD? */
|
---|
1691 | {
|
---|
1692 | #if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
|
---|
1693 | if ( CPUMIsGuestInLongModeEx(pCtx)
|
---|
1694 | && !CPUMIsGuestDebugStateActivePending(pVCpu))
|
---|
1695 | {
|
---|
1696 | CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
|
---|
1697 | STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
|
---|
1698 | Assert(!CPUMIsHyperDebugStateActivePending(pVCpu));
|
---|
1699 | Assert(CPUMIsGuestDebugStateActivePending(pVCpu));
|
---|
1700 | }
|
---|
1701 | else
|
---|
1702 | #endif
|
---|
1703 | if (!CPUMIsGuestDebugStateActive(pVCpu))
|
---|
1704 | {
|
---|
1705 | CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
|
---|
1706 | STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxArmed);
|
---|
1707 | Assert(!CPUMIsHyperDebugStateActive(pVCpu));
|
---|
1708 | Assert(CPUMIsGuestDebugStateActive(pVCpu));
|
---|
1709 | }
|
---|
1710 | Log5(("hmR0SvmLoadSharedDebugState: Loaded guest DRx\n"));
|
---|
1711 | }
|
---|
1712 | /*
|
---|
1713 | * If no debugging enabled, we'll lazy load DR0-3. We don't need to
|
---|
1714 | * intercept #DB as DR6 is updated in the VMCB.
|
---|
1715 | *
|
---|
1716 | * Note! If we cared and dared, we could skip intercepting \#DB here.
|
---|
1717 | * However, \#DB shouldn't be performance critical, so we'll play safe
|
---|
1718 | * and keep the code similar to the VT-x code and always intercept it.
|
---|
1719 | */
|
---|
1720 | #if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
|
---|
1721 | else if ( !CPUMIsGuestDebugStateActivePending(pVCpu)
|
---|
1722 | && !CPUMIsGuestDebugStateActive(pVCpu))
|
---|
1723 | #else
|
---|
1724 | else if (!CPUMIsGuestDebugStateActive(pVCpu))
|
---|
1725 | #endif
|
---|
1726 | {
|
---|
1727 | fInterceptMovDRx = true;
|
---|
1728 | }
|
---|
1729 | }
|
---|
1730 |
|
---|
1731 | Assert(pVmcb->ctrl.u32InterceptXcpt & RT_BIT_32(X86_XCPT_DB));
|
---|
1732 | if (fInterceptMovDRx)
|
---|
1733 | {
|
---|
1734 | if ( pVmcb->ctrl.u16InterceptRdDRx != 0xffff
|
---|
1735 | || pVmcb->ctrl.u16InterceptWrDRx != 0xffff)
|
---|
1736 | {
|
---|
1737 | pVmcb->ctrl.u16InterceptRdDRx = 0xffff;
|
---|
1738 | pVmcb->ctrl.u16InterceptWrDRx = 0xffff;
|
---|
1739 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
1740 | }
|
---|
1741 | }
|
---|
1742 | else
|
---|
1743 | {
|
---|
1744 | if ( pVmcb->ctrl.u16InterceptRdDRx
|
---|
1745 | || pVmcb->ctrl.u16InterceptWrDRx)
|
---|
1746 | {
|
---|
1747 | pVmcb->ctrl.u16InterceptRdDRx = 0;
|
---|
1748 | pVmcb->ctrl.u16InterceptWrDRx = 0;
|
---|
1749 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
1750 | }
|
---|
1751 | }
|
---|
1752 | Log4(("hmR0SvmLoadSharedDebugState: DR6=%#RX64 DR7=%#RX64\n", pCtx->dr[6], pCtx->dr[7]));
|
---|
1753 | }
|
---|
1754 |
|
---|
1755 |
|
---|
1756 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
1757 | /**
|
---|
1758 | * Loads the nested-guest APIC state (currently just the TPR).
|
---|
1759 | *
|
---|
1760 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1761 | * @param pVmcbNstGst Pointer to the nested-guest VM control block.
|
---|
1762 | */
|
---|
1763 | static void hmR0SvmLoadGuestApicStateNested(PVMCPU pVCpu, PSVMVMCB pVmcbNstGst)
|
---|
1764 | {
|
---|
1765 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE))
|
---|
1766 | {
|
---|
1767 | /* Always enable V_INTR_MASKING as we do not want to allow access to the physical APIC TPR. */
|
---|
1768 | pVmcbNstGst->ctrl.IntCtrl.n.u1VIntrMasking = 1;
|
---|
1769 | pVCpu->hm.s.svm.fSyncVTpr = false;
|
---|
1770 | pVmcbNstGst->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_TPR;
|
---|
1771 |
|
---|
1772 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
1773 | }
|
---|
1774 | }
|
---|
1775 | #endif
|
---|
1776 |
|
---|
1777 | /**
|
---|
1778 | * Loads the guest APIC state (currently just the TPR).
|
---|
1779 | *
|
---|
1780 | * @returns VBox status code.
|
---|
1781 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1782 | * @param pVmcb Pointer to the VM control block.
|
---|
1783 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1784 | */
|
---|
1785 | static int hmR0SvmLoadGuestApicState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1786 | {
|
---|
1787 | if (!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE))
|
---|
1788 | return VINF_SUCCESS;
|
---|
1789 |
|
---|
1790 | int rc = VINF_SUCCESS;
|
---|
1791 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
1792 | if ( PDMHasApic(pVM)
|
---|
1793 | && APICIsEnabled(pVCpu))
|
---|
1794 | {
|
---|
1795 | bool fPendingIntr;
|
---|
1796 | uint8_t u8Tpr;
|
---|
1797 | rc = APICGetTpr(pVCpu, &u8Tpr, &fPendingIntr, NULL /* pu8PendingIrq */);
|
---|
1798 | AssertRCReturn(rc, rc);
|
---|
1799 |
|
---|
1800 | /* Assume that we need to trap all TPR accesses and thus need not check on
|
---|
1801 | every #VMEXIT if we should update the TPR. */
|
---|
1802 | Assert(pVmcb->ctrl.IntCtrl.n.u1VIntrMasking);
|
---|
1803 | pVCpu->hm.s.svm.fSyncVTpr = false;
|
---|
1804 |
|
---|
1805 | /* 32-bit guests uses LSTAR MSR for patching guest code which touches the TPR. */
|
---|
1806 | if (pVM->hm.s.fTPRPatchingActive)
|
---|
1807 | {
|
---|
1808 | pCtx->msrLSTAR = u8Tpr;
|
---|
1809 | uint8_t *pbMsrBitmap = (uint8_t *)pVCpu->hm.s.svm.pvMsrBitmap;
|
---|
1810 |
|
---|
1811 | /* If there are interrupts pending, intercept LSTAR writes, otherwise don't intercept reads or writes. */
|
---|
1812 | if (fPendingIntr)
|
---|
1813 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_INTERCEPT_WRITE);
|
---|
1814 | else
|
---|
1815 | {
|
---|
1816 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_LSTAR, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
1817 | pVCpu->hm.s.svm.fSyncVTpr = true;
|
---|
1818 | }
|
---|
1819 | }
|
---|
1820 | else
|
---|
1821 | {
|
---|
1822 | /* Bits 3-0 of the VTPR field correspond to bits 7-4 of the TPR (which is the Task-Priority Class). */
|
---|
1823 | pVmcb->ctrl.IntCtrl.n.u8VTPR = (u8Tpr >> 4);
|
---|
1824 |
|
---|
1825 | /* If there are interrupts pending, intercept CR8 writes to evaluate ASAP if we can deliver the interrupt to the guest. */
|
---|
1826 | if (fPendingIntr)
|
---|
1827 | pVmcb->ctrl.u16InterceptWrCRx |= RT_BIT(8);
|
---|
1828 | else
|
---|
1829 | {
|
---|
1830 | pVmcb->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
|
---|
1831 | pVCpu->hm.s.svm.fSyncVTpr = true;
|
---|
1832 | }
|
---|
1833 |
|
---|
1834 | pVmcb->ctrl.u32VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS | HMSVM_VMCB_CLEAN_TPR);
|
---|
1835 | }
|
---|
1836 | }
|
---|
1837 |
|
---|
1838 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
1839 | return rc;
|
---|
1840 | }
|
---|
1841 |
|
---|
1842 |
|
---|
1843 | /**
|
---|
1844 | * Loads the exception interrupts required for guest (or nested-guest) execution in
|
---|
1845 | * the VMCB.
|
---|
1846 | *
|
---|
1847 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1848 | * @param pVmcb Pointer to the VM control block.
|
---|
1849 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1850 | */
|
---|
1851 | static void hmR0SvmLoadGuestXcptIntercepts(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
1852 | {
|
---|
1853 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_XCPT_INTERCEPTS))
|
---|
1854 | {
|
---|
1855 | /* Trap #UD for GIM provider (e.g. for hypercalls). */
|
---|
1856 | if (pVCpu->hm.s.fGIMTrapXcptUD)
|
---|
1857 | hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_UD);
|
---|
1858 | else
|
---|
1859 | hmR0SvmRemoveXcptIntercept(pVCpu, pCtx, pVmcb, X86_XCPT_UD);
|
---|
1860 |
|
---|
1861 | /* Trap #BP for INT3 debug breakpoints set by the VM debugger. */
|
---|
1862 | if (pVCpu->CTX_SUFF(pVM)->dbgf.ro.cEnabledInt3Breakpoints)
|
---|
1863 | hmR0SvmAddXcptIntercept(pVmcb, X86_XCPT_BP);
|
---|
1864 | else
|
---|
1865 | hmR0SvmRemoveXcptIntercept(pVCpu, pCtx, pVmcb, X86_XCPT_BP);
|
---|
1866 |
|
---|
1867 | /* The remaining intercepts are handled elsewhere, e.g. in hmR0SvmLoadSharedCR0(). */
|
---|
1868 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_XCPT_INTERCEPTS);
|
---|
1869 | }
|
---|
1870 | }
|
---|
1871 |
|
---|
1872 |
|
---|
1873 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
1874 | /**
|
---|
1875 | * Loads the intercepts required for nested-guest execution in the VMCB.
|
---|
1876 | *
|
---|
1877 | * This merges the guest and nested-guest intercepts in a way that if the outer
|
---|
1878 | * guest intercepts an exception we need to intercept it in the nested-guest as
|
---|
1879 | * well and handle it accordingly.
|
---|
1880 | *
|
---|
1881 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1882 | * @param pVmcbNstGst Pointer to the nested-guest VM control block.
|
---|
1883 | * @param pCtx Pointer to the guest-CPU context.
|
---|
1884 | */
|
---|
1885 | static void hmR0SvmLoadGuestXcptInterceptsNested(PVMCPU pVCpu, PSVMVMCB pVmcbNstGst, PCPUMCTX pCtx)
|
---|
1886 | {
|
---|
1887 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_XCPT_INTERCEPTS))
|
---|
1888 | {
|
---|
1889 | /* First, load the guest intercepts into the guest VMCB. */
|
---|
1890 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
1891 | Assert(!(pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_VINTR));
|
---|
1892 | hmR0SvmLoadGuestXcptIntercepts(pVCpu, pVmcb, pCtx);
|
---|
1893 |
|
---|
1894 | /* Next, merge the intercepts into the nested-guest VMCB. */
|
---|
1895 | pVmcbNstGst->ctrl.u16InterceptRdCRx |= pVmcb->ctrl.u16InterceptRdCRx;
|
---|
1896 | pVmcbNstGst->ctrl.u16InterceptWrCRx |= pVmcb->ctrl.u16InterceptWrCRx;
|
---|
1897 |
|
---|
1898 | /* Always intercept CR0, CR4 reads and writes as we alter them. */
|
---|
1899 | pVmcbNstGst->ctrl.u16InterceptRdCRx |= RT_BIT(0) | RT_BIT(4);
|
---|
1900 | pVmcbNstGst->ctrl.u16InterceptWrCRx |= RT_BIT(0) | RT_BIT(4);
|
---|
1901 |
|
---|
1902 | /* Always intercept CR3 reads and writes without nested-paging as we load shadow page tables. */
|
---|
1903 | if (!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging)
|
---|
1904 | {
|
---|
1905 | pVmcbNstGst->ctrl.u16InterceptRdCRx |= RT_BIT(3);
|
---|
1906 | pVmcbNstGst->ctrl.u16InterceptWrCRx |= RT_BIT(3);
|
---|
1907 | }
|
---|
1908 |
|
---|
1909 | /** @todo Figure out debugging with nested-guests, till then just intercept
|
---|
1910 | * all DR[0-15] accesses. */
|
---|
1911 | pVmcbNstGst->ctrl.u16InterceptRdDRx |= 0xffff;
|
---|
1912 | pVmcbNstGst->ctrl.u16InterceptWrDRx |= 0xffff;
|
---|
1913 |
|
---|
1914 | pVmcbNstGst->ctrl.u32InterceptXcpt |= pVmcb->ctrl.u32InterceptXcpt;
|
---|
1915 | pVmcbNstGst->ctrl.u64InterceptCtrl |= pVmcb->ctrl.u64InterceptCtrl
|
---|
1916 | | HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS;
|
---|
1917 | /*
|
---|
1918 | * Remove control intercepts that we don't need while executing the nested-guest.
|
---|
1919 | *
|
---|
1920 | * VMMCALL when not intercepted raises a \#UD exception in the guest. However,
|
---|
1921 | * other SVM instructions like VMSAVE when not intercept can cause havoc on the
|
---|
1922 | * host as they can write to any location in physical memory, hence they always
|
---|
1923 | * need to be intercepted (see below).
|
---|
1924 | */
|
---|
1925 | Assert( (pVmcbNstGst->ctrl.u64InterceptCtrl & HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS)
|
---|
1926 | == HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS);
|
---|
1927 | pVmcbNstGst->ctrl.u64InterceptCtrl &= ~SVM_CTRL_INTERCEPT_VMMCALL;
|
---|
1928 |
|
---|
1929 | /*
|
---|
1930 | * If we don't expose Virtualized-VMSAVE/VMLOAD feature to the outer guest, we
|
---|
1931 | * need to intercept VMSAVE/VMLOAD instructions executed by the nested-guest.
|
---|
1932 | */
|
---|
1933 | if (!pVCpu->CTX_SUFF(pVM)->cpum.ro.GuestFeatures.fSvmVirtVmsaveVmload)
|
---|
1934 | {
|
---|
1935 | pVmcbNstGst->ctrl.u64InterceptCtrl |= SVM_CTRL_INTERCEPT_VMSAVE
|
---|
1936 | | SVM_CTRL_INTERCEPT_VMLOAD;
|
---|
1937 | }
|
---|
1938 |
|
---|
1939 | /* Finally, update the VMCB clean bits. */
|
---|
1940 | pVmcbNstGst->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
1941 |
|
---|
1942 | Assert(!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_XCPT_INTERCEPTS));
|
---|
1943 | }
|
---|
1944 | }
|
---|
1945 | #endif
|
---|
1946 |
|
---|
1947 |
|
---|
1948 | /**
|
---|
1949 | * Sets up the appropriate function to run guest code.
|
---|
1950 | *
|
---|
1951 | * @returns VBox status code.
|
---|
1952 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1953 | *
|
---|
1954 | * @remarks No-long-jump zone!!!
|
---|
1955 | */
|
---|
1956 | static int hmR0SvmSetupVMRunHandler(PVMCPU pVCpu)
|
---|
1957 | {
|
---|
1958 | if (CPUMIsGuestInLongMode(pVCpu))
|
---|
1959 | {
|
---|
1960 | #ifndef VBOX_ENABLE_64_BITS_GUESTS
|
---|
1961 | return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
|
---|
1962 | #endif
|
---|
1963 | Assert(pVCpu->CTX_SUFF(pVM)->hm.s.fAllow64BitGuests); /* Guaranteed by hmR3InitFinalizeR0(). */
|
---|
1964 | #if HC_ARCH_BITS == 32
|
---|
1965 | /* 32-bit host. We need to switch to 64-bit before running the 64-bit guest. */
|
---|
1966 | pVCpu->hm.s.svm.pfnVMRun = SVMR0VMSwitcherRun64;
|
---|
1967 | #else
|
---|
1968 | /* 64-bit host or hybrid host. */
|
---|
1969 | pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun64;
|
---|
1970 | #endif
|
---|
1971 | }
|
---|
1972 | else
|
---|
1973 | {
|
---|
1974 | /* Guest is not in long mode, use the 32-bit handler. */
|
---|
1975 | pVCpu->hm.s.svm.pfnVMRun = SVMR0VMRun;
|
---|
1976 | }
|
---|
1977 | return VINF_SUCCESS;
|
---|
1978 | }
|
---|
1979 |
|
---|
1980 |
|
---|
1981 | /**
|
---|
1982 | * Enters the AMD-V session.
|
---|
1983 | *
|
---|
1984 | * @returns VBox status code.
|
---|
1985 | * @param pVM The cross context VM structure.
|
---|
1986 | * @param pVCpu The cross context virtual CPU structure.
|
---|
1987 | * @param pCpu Pointer to the CPU info struct.
|
---|
1988 | */
|
---|
1989 | VMMR0DECL(int) SVMR0Enter(PVM pVM, PVMCPU pVCpu, PHMGLOBALCPUINFO pCpu)
|
---|
1990 | {
|
---|
1991 | AssertPtr(pVM);
|
---|
1992 | AssertPtr(pVCpu);
|
---|
1993 | Assert(pVM->hm.s.svm.fSupported);
|
---|
1994 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
1995 | NOREF(pVM); NOREF(pCpu);
|
---|
1996 |
|
---|
1997 | LogFlowFunc(("pVM=%p pVCpu=%p\n", pVM, pVCpu));
|
---|
1998 | Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT | HM_CHANGED_HOST_GUEST_SHARED_STATE));
|
---|
1999 |
|
---|
2000 | pVCpu->hm.s.fLeaveDone = false;
|
---|
2001 | return VINF_SUCCESS;
|
---|
2002 | }
|
---|
2003 |
|
---|
2004 |
|
---|
2005 | /**
|
---|
2006 | * Thread-context callback for AMD-V.
|
---|
2007 | *
|
---|
2008 | * @param enmEvent The thread-context event.
|
---|
2009 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2010 | * @param fGlobalInit Whether global VT-x/AMD-V init. is used.
|
---|
2011 | * @thread EMT(pVCpu)
|
---|
2012 | */
|
---|
2013 | VMMR0DECL(void) SVMR0ThreadCtxCallback(RTTHREADCTXEVENT enmEvent, PVMCPU pVCpu, bool fGlobalInit)
|
---|
2014 | {
|
---|
2015 | NOREF(fGlobalInit);
|
---|
2016 |
|
---|
2017 | switch (enmEvent)
|
---|
2018 | {
|
---|
2019 | case RTTHREADCTXEVENT_OUT:
|
---|
2020 | {
|
---|
2021 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
2022 | Assert(VMMR0ThreadCtxHookIsEnabled(pVCpu));
|
---|
2023 | VMCPU_ASSERT_EMT(pVCpu);
|
---|
2024 |
|
---|
2025 | /* No longjmps (log-flush, locks) in this fragile context. */
|
---|
2026 | VMMRZCallRing3Disable(pVCpu);
|
---|
2027 |
|
---|
2028 | if (!pVCpu->hm.s.fLeaveDone)
|
---|
2029 | {
|
---|
2030 | hmR0SvmLeave(pVCpu);
|
---|
2031 | pVCpu->hm.s.fLeaveDone = true;
|
---|
2032 | }
|
---|
2033 |
|
---|
2034 | /* Leave HM context, takes care of local init (term). */
|
---|
2035 | int rc = HMR0LeaveCpu(pVCpu);
|
---|
2036 | AssertRC(rc); NOREF(rc);
|
---|
2037 |
|
---|
2038 | /* Restore longjmp state. */
|
---|
2039 | VMMRZCallRing3Enable(pVCpu);
|
---|
2040 | STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatSwitchPreempt);
|
---|
2041 | break;
|
---|
2042 | }
|
---|
2043 |
|
---|
2044 | case RTTHREADCTXEVENT_IN:
|
---|
2045 | {
|
---|
2046 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
2047 | Assert(VMMR0ThreadCtxHookIsEnabled(pVCpu));
|
---|
2048 | VMCPU_ASSERT_EMT(pVCpu);
|
---|
2049 |
|
---|
2050 | /* No longjmps (log-flush, locks) in this fragile context. */
|
---|
2051 | VMMRZCallRing3Disable(pVCpu);
|
---|
2052 |
|
---|
2053 | /*
|
---|
2054 | * Initialize the bare minimum state required for HM. This takes care of
|
---|
2055 | * initializing AMD-V if necessary (onlined CPUs, local init etc.)
|
---|
2056 | */
|
---|
2057 | int rc = HMR0EnterCpu(pVCpu);
|
---|
2058 | AssertRC(rc); NOREF(rc);
|
---|
2059 | Assert(HMCPU_CF_IS_SET(pVCpu, HM_CHANGED_HOST_CONTEXT | HM_CHANGED_HOST_GUEST_SHARED_STATE));
|
---|
2060 |
|
---|
2061 | pVCpu->hm.s.fLeaveDone = false;
|
---|
2062 |
|
---|
2063 | /* Restore longjmp state. */
|
---|
2064 | VMMRZCallRing3Enable(pVCpu);
|
---|
2065 | break;
|
---|
2066 | }
|
---|
2067 |
|
---|
2068 | default:
|
---|
2069 | break;
|
---|
2070 | }
|
---|
2071 | }
|
---|
2072 |
|
---|
2073 |
|
---|
2074 | /**
|
---|
2075 | * Saves the host state.
|
---|
2076 | *
|
---|
2077 | * @returns VBox status code.
|
---|
2078 | * @param pVM The cross context VM structure.
|
---|
2079 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2080 | *
|
---|
2081 | * @remarks No-long-jump zone!!!
|
---|
2082 | */
|
---|
2083 | VMMR0DECL(int) SVMR0SaveHostState(PVM pVM, PVMCPU pVCpu)
|
---|
2084 | {
|
---|
2085 | NOREF(pVM);
|
---|
2086 | NOREF(pVCpu);
|
---|
2087 | /* Nothing to do here. AMD-V does this for us automatically during the world-switch. */
|
---|
2088 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT);
|
---|
2089 | return VINF_SUCCESS;
|
---|
2090 | }
|
---|
2091 |
|
---|
2092 |
|
---|
2093 | /**
|
---|
2094 | * Loads the guest state into the VMCB.
|
---|
2095 | *
|
---|
2096 | * The CPU state will be loaded from these fields on every successful VM-entry.
|
---|
2097 | * Also sets up the appropriate VMRUN function to execute guest code based on
|
---|
2098 | * the guest CPU mode.
|
---|
2099 | *
|
---|
2100 | * @returns VBox status code.
|
---|
2101 | * @param pVM The cross context VM structure.
|
---|
2102 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2103 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2104 | *
|
---|
2105 | * @remarks No-long-jump zone!!!
|
---|
2106 | */
|
---|
2107 | static int hmR0SvmLoadGuestState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2108 | {
|
---|
2109 | HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
|
---|
2110 |
|
---|
2111 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
2112 | AssertMsgReturn(pVmcb, ("Invalid pVmcb\n"), VERR_SVM_INVALID_PVMCB);
|
---|
2113 |
|
---|
2114 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestState, x);
|
---|
2115 |
|
---|
2116 | int rc = hmR0SvmLoadGuestControlRegs(pVCpu, pVmcb, pCtx);
|
---|
2117 | AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestControlRegs! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
|
---|
2118 |
|
---|
2119 | hmR0SvmLoadGuestSegmentRegs(pVCpu, pVmcb, pCtx);
|
---|
2120 | hmR0SvmLoadGuestMsrs(pVCpu, pVmcb, pCtx);
|
---|
2121 |
|
---|
2122 | pVmcb->guest.u64RIP = pCtx->rip;
|
---|
2123 | pVmcb->guest.u64RSP = pCtx->rsp;
|
---|
2124 | pVmcb->guest.u64RFlags = pCtx->eflags.u32;
|
---|
2125 | pVmcb->guest.u64RAX = pCtx->rax;
|
---|
2126 |
|
---|
2127 | rc = hmR0SvmLoadGuestApicState(pVCpu, pVmcb, pCtx);
|
---|
2128 | AssertLogRelMsgRCReturn(rc, ("hmR0SvmLoadGuestApicState! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
|
---|
2129 |
|
---|
2130 | hmR0SvmLoadGuestXcptIntercepts(pVCpu, pVmcb, pCtx);
|
---|
2131 |
|
---|
2132 | rc = hmR0SvmSetupVMRunHandler(pVCpu);
|
---|
2133 | AssertLogRelMsgRCReturn(rc, ("hmR0SvmSetupVMRunHandler! rc=%Rrc (pVM=%p pVCpu=%p)\n", rc, pVM, pVCpu), rc);
|
---|
2134 |
|
---|
2135 | /* Clear any unused and reserved bits. */
|
---|
2136 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_RIP /* Unused (loaded unconditionally). */
|
---|
2137 | | HM_CHANGED_GUEST_RSP
|
---|
2138 | | HM_CHANGED_GUEST_RFLAGS
|
---|
2139 | | HM_CHANGED_GUEST_SYSENTER_CS_MSR
|
---|
2140 | | HM_CHANGED_GUEST_SYSENTER_EIP_MSR
|
---|
2141 | | HM_CHANGED_GUEST_SYSENTER_ESP_MSR
|
---|
2142 | | HM_CHANGED_GUEST_LAZY_MSRS /* Unused. */
|
---|
2143 | | HM_CHANGED_SVM_RESERVED1 /* Reserved. */
|
---|
2144 | | HM_CHANGED_SVM_RESERVED2
|
---|
2145 | | HM_CHANGED_SVM_RESERVED3
|
---|
2146 | | HM_CHANGED_SVM_RESERVED4);
|
---|
2147 |
|
---|
2148 | /* All the guest state bits should be loaded except maybe the host context and/or shared host/guest bits. */
|
---|
2149 | AssertMsg( !HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_ALL_GUEST)
|
---|
2150 | || HMCPU_CF_IS_PENDING_ONLY(pVCpu, HM_CHANGED_HOST_CONTEXT | HM_CHANGED_HOST_GUEST_SHARED_STATE),
|
---|
2151 | ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
|
---|
2152 |
|
---|
2153 | Log4(("hmR0SvmLoadGuestState: CS:RIP=%04x:%RX64 EFL=%#x CR0=%#RX32 CR3=%#RX32 CR4=%#RX32 ESP=%#RX32 EBP=%#RX32\n",
|
---|
2154 | pCtx->cs.Sel, pCtx->rip, pCtx->eflags.u, pCtx->cr0, pCtx->cr3, pCtx->cr4, pCtx->esp, pCtx->ebp));
|
---|
2155 | Log4(("hmR0SvmLoadGuestState: SS={%04x base=%016RX64 limit=%08x flags=%08x}\n", pCtx->ss.Sel, pCtx->ss.u64Base,
|
---|
2156 | pCtx->ss.u32Limit, pCtx->ss.Attr.u));
|
---|
2157 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestState, x);
|
---|
2158 | return rc;
|
---|
2159 | }
|
---|
2160 |
|
---|
2161 |
|
---|
2162 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
2163 | /**
|
---|
2164 | * Caches the nested-guest VMCB fields before we modify them for execution using
|
---|
2165 | * hardware-assisted SVM.
|
---|
2166 | *
|
---|
2167 | * @returns true if the VMCB was previously already cached, false otherwise.
|
---|
2168 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2169 | *
|
---|
2170 | * @sa HMSvmNstGstVmExitNotify.
|
---|
2171 | */
|
---|
2172 | static bool hmR0SvmVmRunCacheVmcb(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2173 | {
|
---|
2174 | PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
|
---|
2175 | PCSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
|
---|
2176 | PCSVMVMCBSTATESAVE pVmcbNstGstState = &pVmcbNstGst->guest;
|
---|
2177 | PSVMNESTEDVMCBCACHE pNstGstVmcbCache = &pVCpu->hm.s.svm.NstGstVmcbCache;
|
---|
2178 |
|
---|
2179 | /*
|
---|
2180 | * Cache the nested-guest programmed VMCB fields if we have not cached it yet.
|
---|
2181 | * Otherwise we risk re-caching the values we may have modified, see @bugref{7243#c44}.
|
---|
2182 | *
|
---|
2183 | * Nested-paging CR3 is not saved back into the VMCB on #VMEXIT, hence no need to
|
---|
2184 | * cache and restore it, see AMD spec. 15.25.4 "Nested Paging and VMRUN/#VMEXIT".
|
---|
2185 | */
|
---|
2186 | bool const fWasCached = pCtx->hwvirt.svm.fHMCachedVmcb;
|
---|
2187 | if (!fWasCached)
|
---|
2188 | {
|
---|
2189 | pNstGstVmcbCache->u16InterceptRdCRx = pVmcbNstGstCtrl->u16InterceptRdCRx;
|
---|
2190 | pNstGstVmcbCache->u16InterceptWrCRx = pVmcbNstGstCtrl->u16InterceptWrCRx;
|
---|
2191 | pNstGstVmcbCache->u16InterceptRdDRx = pVmcbNstGstCtrl->u16InterceptRdDRx;
|
---|
2192 | pNstGstVmcbCache->u16InterceptWrDRx = pVmcbNstGstCtrl->u16InterceptWrDRx;
|
---|
2193 | pNstGstVmcbCache->u32InterceptXcpt = pVmcbNstGstCtrl->u32InterceptXcpt;
|
---|
2194 | pNstGstVmcbCache->u64InterceptCtrl = pVmcbNstGstCtrl->u64InterceptCtrl;
|
---|
2195 | pNstGstVmcbCache->u64CR0 = pVmcbNstGstState->u64CR0;
|
---|
2196 | pNstGstVmcbCache->u64CR3 = pVmcbNstGstState->u64CR3;
|
---|
2197 | pNstGstVmcbCache->u64CR4 = pVmcbNstGstState->u64CR4;
|
---|
2198 | pNstGstVmcbCache->u64EFER = pVmcbNstGstState->u64EFER;
|
---|
2199 | pNstGstVmcbCache->u64DBGCTL = pVmcbNstGstState->u64DBGCTL;
|
---|
2200 | pNstGstVmcbCache->u64IOPMPhysAddr = pVmcbNstGstCtrl->u64IOPMPhysAddr;
|
---|
2201 | pNstGstVmcbCache->u64MSRPMPhysAddr = pVmcbNstGstCtrl->u64MSRPMPhysAddr;
|
---|
2202 | pNstGstVmcbCache->u64TSCOffset = pVmcbNstGstCtrl->u64TSCOffset;
|
---|
2203 | pNstGstVmcbCache->u32VmcbCleanBits = pVmcbNstGstCtrl->u32VmcbCleanBits;
|
---|
2204 | pNstGstVmcbCache->fVIntrMasking = pVmcbNstGstCtrl->IntCtrl.n.u1VIntrMasking;
|
---|
2205 | pNstGstVmcbCache->TLBCtrl = pVmcbNstGstCtrl->TLBCtrl;
|
---|
2206 | pNstGstVmcbCache->u1NestedPaging = pVmcbNstGstCtrl->NestedPaging.n.u1NestedPaging;
|
---|
2207 | pNstGstVmcbCache->u1LbrVirt = pVmcbNstGstCtrl->LbrVirt.n.u1LbrVirt;
|
---|
2208 | pCtx->hwvirt.svm.fHMCachedVmcb = true;
|
---|
2209 | Log4(("hmR0SvmVmRunCacheVmcb: Cached VMCB fields\n"));
|
---|
2210 | }
|
---|
2211 |
|
---|
2212 | return fWasCached;
|
---|
2213 | }
|
---|
2214 |
|
---|
2215 |
|
---|
2216 | /**
|
---|
2217 | * Sets up the nested-guest VMCB for execution using hardware-assisted SVM.
|
---|
2218 | *
|
---|
2219 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2220 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2221 | */
|
---|
2222 | static void hmR0SvmVmRunSetupVmcb(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2223 | {
|
---|
2224 | PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
|
---|
2225 | PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
|
---|
2226 |
|
---|
2227 | /*
|
---|
2228 | * First cache the nested-guest VMCB fields we may potentially modify.
|
---|
2229 | */
|
---|
2230 | bool const fVmcbCached = hmR0SvmVmRunCacheVmcb(pVCpu, pCtx);
|
---|
2231 | if (!fVmcbCached)
|
---|
2232 | {
|
---|
2233 | /*
|
---|
2234 | * The IOPM of the nested-guest can be ignored because the the guest always
|
---|
2235 | * intercepts all IO port accesses. Thus, we'll swap to the guest IOPM rather
|
---|
2236 | * into the nested-guest one and swap it back on the #VMEXIT.
|
---|
2237 | */
|
---|
2238 | pVmcbNstGstCtrl->u64IOPMPhysAddr = g_HCPhysIOBitmap;
|
---|
2239 |
|
---|
2240 | /*
|
---|
2241 | * Load the host-physical address into the MSRPM rather than the nested-guest
|
---|
2242 | * physical address (currently we trap all MSRs in the nested-guest).
|
---|
2243 | */
|
---|
2244 | pVmcbNstGstCtrl->u64MSRPMPhysAddr = g_HCPhysNstGstMsrBitmap;
|
---|
2245 |
|
---|
2246 | /*
|
---|
2247 | * Use the same nested-paging as the "outer" guest. We can't dynamically
|
---|
2248 | * switch off nested-paging suddenly while executing a VM (see assertion at the
|
---|
2249 | * end of Trap0eHandler in PGMAllBth.h).
|
---|
2250 | */
|
---|
2251 | pVmcbNstGstCtrl->NestedPaging.n.u1NestedPaging = pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging;
|
---|
2252 |
|
---|
2253 | /* For now copy the LBR info. from outer guest VMCB. */
|
---|
2254 | /** @todo fix this later. */
|
---|
2255 | PCSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
2256 | pVmcbNstGstCtrl->LbrVirt.n.u1LbrVirt = pVmcb->ctrl.LbrVirt.n.u1LbrVirt;
|
---|
2257 | pVmcbNstGst->guest.u64DBGCTL = pVmcb->guest.u64DBGCTL;
|
---|
2258 | }
|
---|
2259 | else
|
---|
2260 | {
|
---|
2261 | Assert(pVmcbNstGstCtrl->u64IOPMPhysAddr == g_HCPhysIOBitmap);
|
---|
2262 | Assert(pVmcbNstGstCtrl->u64MSRPMPhysAddr = g_HCPhysNstGstMsrBitmap);
|
---|
2263 | Assert(RT_BOOL(pVmcbNstGstCtrl->NestedPaging.n.u1NestedPaging) == pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
|
---|
2264 | }
|
---|
2265 | }
|
---|
2266 |
|
---|
2267 |
|
---|
2268 | /**
|
---|
2269 | * Loads the nested-guest state into the VMCB.
|
---|
2270 | *
|
---|
2271 | * @returns VBox status code.
|
---|
2272 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2273 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2274 | *
|
---|
2275 | * @remarks No-long-jump zone!!!
|
---|
2276 | */
|
---|
2277 | static int hmR0SvmLoadGuestStateNested(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
2278 | {
|
---|
2279 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatLoadGuestState, x);
|
---|
2280 |
|
---|
2281 | PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
|
---|
2282 | Assert(pVmcbNstGst);
|
---|
2283 |
|
---|
2284 | hmR0SvmVmRunSetupVmcb(pVCpu, pCtx);
|
---|
2285 |
|
---|
2286 | int rc = hmR0SvmLoadGuestControlRegs(pVCpu, pVmcbNstGst, pCtx);
|
---|
2287 | AssertRCReturn(rc, rc);
|
---|
2288 |
|
---|
2289 | hmR0SvmLoadGuestSegmentRegs(pVCpu, pVmcbNstGst, pCtx);
|
---|
2290 | hmR0SvmLoadGuestMsrs(pVCpu, pVmcbNstGst, pCtx);
|
---|
2291 | hmR0SvmLoadGuestApicStateNested(pVCpu, pVmcbNstGst);
|
---|
2292 |
|
---|
2293 | pVmcbNstGst->guest.u64RIP = pCtx->rip;
|
---|
2294 | pVmcbNstGst->guest.u64RSP = pCtx->rsp;
|
---|
2295 | pVmcbNstGst->guest.u64RFlags = pCtx->eflags.u32;
|
---|
2296 | pVmcbNstGst->guest.u64RAX = pCtx->rax;
|
---|
2297 |
|
---|
2298 | hmR0SvmLoadGuestXcptInterceptsNested(pVCpu, pVmcbNstGst, pCtx);
|
---|
2299 |
|
---|
2300 | rc = hmR0SvmSetupVMRunHandler(pVCpu);
|
---|
2301 | AssertRCReturn(rc, rc);
|
---|
2302 |
|
---|
2303 | /* Clear any unused and reserved bits. */
|
---|
2304 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_RIP /* Unused (loaded unconditionally). */
|
---|
2305 | | HM_CHANGED_GUEST_RSP
|
---|
2306 | | HM_CHANGED_GUEST_RFLAGS
|
---|
2307 | | HM_CHANGED_GUEST_SYSENTER_CS_MSR
|
---|
2308 | | HM_CHANGED_GUEST_SYSENTER_EIP_MSR
|
---|
2309 | | HM_CHANGED_GUEST_SYSENTER_ESP_MSR
|
---|
2310 | | HM_CHANGED_GUEST_LAZY_MSRS /* Unused. */
|
---|
2311 | | HM_CHANGED_SVM_RESERVED1 /* Reserved. */
|
---|
2312 | | HM_CHANGED_SVM_RESERVED2
|
---|
2313 | | HM_CHANGED_SVM_RESERVED3
|
---|
2314 | | HM_CHANGED_SVM_RESERVED4);
|
---|
2315 |
|
---|
2316 | /* All the guest state bits should be loaded except maybe the host context and/or shared host/guest bits. */
|
---|
2317 | AssertMsg( !HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_ALL_GUEST)
|
---|
2318 | || HMCPU_CF_IS_PENDING_ONLY(pVCpu, HM_CHANGED_HOST_CONTEXT | HM_CHANGED_HOST_GUEST_SHARED_STATE),
|
---|
2319 | ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
|
---|
2320 |
|
---|
2321 | Log4(("hmR0SvmLoadGuestStateNested: CS:RIP=%04x:%RX64 EFL=%#x CR0=%#RX32 CR3=%#RX32 (HyperCR3=%#RX64) CR4=%#RX32 "
|
---|
2322 | "ESP=%#RX32 EBP=%#RX32 rc=%d\n", pCtx->cs.Sel, pCtx->rip, pCtx->eflags.u, pCtx->cr0, pCtx->cr3,
|
---|
2323 | pVmcbNstGst->guest.u64CR3, pCtx->cr4, pCtx->esp, pCtx->ebp, rc));
|
---|
2324 | Log4(("hmR0SvmLoadGuestStateNested: SS={%04x base=%016RX64 limit=%08x flags=%08x}\n", pCtx->ss.Sel, pCtx->ss.u64Base,
|
---|
2325 | pCtx->ss.u32Limit, pCtx->ss.Attr.u));
|
---|
2326 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatLoadGuestState, x);
|
---|
2327 |
|
---|
2328 | return rc;
|
---|
2329 | }
|
---|
2330 | #endif
|
---|
2331 |
|
---|
2332 |
|
---|
2333 | /**
|
---|
2334 | * Loads the state shared between the host and guest or nested-guest into the
|
---|
2335 | * VMCB.
|
---|
2336 | *
|
---|
2337 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2338 | * @param pVmcb Pointer to the VM control block.
|
---|
2339 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2340 | *
|
---|
2341 | * @remarks No-long-jump zone!!!
|
---|
2342 | */
|
---|
2343 | static void hmR0SvmLoadSharedState(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx)
|
---|
2344 | {
|
---|
2345 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
2346 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2347 |
|
---|
2348 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0))
|
---|
2349 | {
|
---|
2350 | hmR0SvmLoadSharedCR0(pVCpu, pVmcb, pCtx);
|
---|
2351 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
2352 | }
|
---|
2353 |
|
---|
2354 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_DEBUG))
|
---|
2355 | {
|
---|
2356 | /** @todo Figure out stepping with nested-guest. */
|
---|
2357 | if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
2358 | hmR0SvmLoadSharedDebugState(pVCpu, pVmcb, pCtx);
|
---|
2359 | else
|
---|
2360 | {
|
---|
2361 | pVmcb->guest.u64DR6 = pCtx->dr[6];
|
---|
2362 | pVmcb->guest.u64DR7 = pCtx->dr[7];
|
---|
2363 | Log4(("hmR0SvmLoadSharedState: DR6=%#RX64 DR7=%#RX64\n", pCtx->dr[6], pCtx->dr[7]));
|
---|
2364 | }
|
---|
2365 |
|
---|
2366 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_DEBUG);
|
---|
2367 | }
|
---|
2368 |
|
---|
2369 | /* Unused on AMD-V. */
|
---|
2370 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_GUEST_LAZY_MSRS);
|
---|
2371 |
|
---|
2372 | AssertMsg(!HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE),
|
---|
2373 | ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
|
---|
2374 | }
|
---|
2375 |
|
---|
2376 |
|
---|
2377 | /**
|
---|
2378 | * Saves the guest (or nested-guest) state from the VMCB into the guest-CPU context.
|
---|
2379 | *
|
---|
2380 | * Currently there is no residual state left in the CPU that is not updated in the
|
---|
2381 | * VMCB.
|
---|
2382 | *
|
---|
2383 | * @returns VBox status code.
|
---|
2384 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2385 | * @param pMixedCtx Pointer to the guest-CPU context. The data may be
|
---|
2386 | * out-of-sync. Make sure to update the required fields
|
---|
2387 | * before using them.
|
---|
2388 | * @param pVmcb Pointer to the VM control block.
|
---|
2389 | */
|
---|
2390 | static void hmR0SvmSaveGuestState(PVMCPU pVCpu, PCPUMCTX pMixedCtx, PCSVMVMCB pVmcb)
|
---|
2391 | {
|
---|
2392 | Assert(VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2393 |
|
---|
2394 | pMixedCtx->rip = pVmcb->guest.u64RIP;
|
---|
2395 | pMixedCtx->rsp = pVmcb->guest.u64RSP;
|
---|
2396 | pMixedCtx->eflags.u32 = pVmcb->guest.u64RFlags;
|
---|
2397 | pMixedCtx->rax = pVmcb->guest.u64RAX;
|
---|
2398 |
|
---|
2399 | /*
|
---|
2400 | * Guest interrupt shadow.
|
---|
2401 | */
|
---|
2402 | if (pVmcb->ctrl.IntShadow.n.u1IntShadow)
|
---|
2403 | EMSetInhibitInterruptsPC(pVCpu, pMixedCtx->rip);
|
---|
2404 | else if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
|
---|
2405 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
|
---|
2406 |
|
---|
2407 | /*
|
---|
2408 | * Guest Control registers: CR2, CR3 (handled at the end) - accesses to other control registers are always intercepted.
|
---|
2409 | */
|
---|
2410 | pMixedCtx->cr2 = pVmcb->guest.u64CR2;
|
---|
2411 |
|
---|
2412 | /*
|
---|
2413 | * Guest MSRs.
|
---|
2414 | */
|
---|
2415 | pMixedCtx->msrSTAR = pVmcb->guest.u64STAR; /* legacy syscall eip, cs & ss */
|
---|
2416 | pMixedCtx->msrLSTAR = pVmcb->guest.u64LSTAR; /* 64-bit mode syscall rip */
|
---|
2417 | pMixedCtx->msrCSTAR = pVmcb->guest.u64CSTAR; /* compatibility mode syscall rip */
|
---|
2418 | pMixedCtx->msrSFMASK = pVmcb->guest.u64SFMASK; /* syscall flag mask */
|
---|
2419 | pMixedCtx->msrKERNELGSBASE = pVmcb->guest.u64KernelGSBase; /* swapgs exchange value */
|
---|
2420 | pMixedCtx->SysEnter.cs = pVmcb->guest.u64SysEnterCS;
|
---|
2421 | pMixedCtx->SysEnter.eip = pVmcb->guest.u64SysEnterEIP;
|
---|
2422 | pMixedCtx->SysEnter.esp = pVmcb->guest.u64SysEnterESP;
|
---|
2423 |
|
---|
2424 | /*
|
---|
2425 | * Guest segment registers (includes FS, GS base MSRs for 64-bit guests).
|
---|
2426 | */
|
---|
2427 | HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, CS, cs);
|
---|
2428 | HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, SS, ss);
|
---|
2429 | HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, DS, ds);
|
---|
2430 | HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, ES, es);
|
---|
2431 | HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, FS, fs);
|
---|
2432 | HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, GS, gs);
|
---|
2433 |
|
---|
2434 | /*
|
---|
2435 | * Correct the hidden CS granularity bit. Haven't seen it being wrong in any other
|
---|
2436 | * register (yet).
|
---|
2437 | */
|
---|
2438 | /** @todo SELM might need to be fixed as it too should not care about the
|
---|
2439 | * granularity bit. See @bugref{6785}. */
|
---|
2440 | if ( !pMixedCtx->cs.Attr.n.u1Granularity
|
---|
2441 | && pMixedCtx->cs.Attr.n.u1Present
|
---|
2442 | && pMixedCtx->cs.u32Limit > UINT32_C(0xfffff))
|
---|
2443 | {
|
---|
2444 | Assert((pMixedCtx->cs.u32Limit & 0xfff) == 0xfff);
|
---|
2445 | pMixedCtx->cs.Attr.n.u1Granularity = 1;
|
---|
2446 | }
|
---|
2447 |
|
---|
2448 | #ifdef VBOX_STRICT
|
---|
2449 | # define HMSVM_ASSERT_SEG_GRANULARITY(reg) \
|
---|
2450 | AssertMsg( !pMixedCtx->reg.Attr.n.u1Present \
|
---|
2451 | || ( pMixedCtx->reg.Attr.n.u1Granularity \
|
---|
2452 | ? (pMixedCtx->reg.u32Limit & 0xfff) == 0xfff \
|
---|
2453 | : pMixedCtx->reg.u32Limit <= UINT32_C(0xfffff)), \
|
---|
2454 | ("Invalid Segment Attributes Limit=%#RX32 Attr=%#RX32 Base=%#RX64\n", pMixedCtx->reg.u32Limit, \
|
---|
2455 | pMixedCtx->reg.Attr.u, pMixedCtx->reg.u64Base))
|
---|
2456 |
|
---|
2457 | HMSVM_ASSERT_SEG_GRANULARITY(cs);
|
---|
2458 | HMSVM_ASSERT_SEG_GRANULARITY(ss);
|
---|
2459 | HMSVM_ASSERT_SEG_GRANULARITY(ds);
|
---|
2460 | HMSVM_ASSERT_SEG_GRANULARITY(es);
|
---|
2461 | HMSVM_ASSERT_SEG_GRANULARITY(fs);
|
---|
2462 | HMSVM_ASSERT_SEG_GRANULARITY(gs);
|
---|
2463 |
|
---|
2464 | # undef HMSVM_ASSERT_SEL_GRANULARITY
|
---|
2465 | #endif
|
---|
2466 |
|
---|
2467 | /*
|
---|
2468 | * Sync the hidden SS DPL field. AMD CPUs have a separate CPL field in the VMCB and uses that
|
---|
2469 | * and thus it's possible that when the CPL changes during guest execution that the SS DPL
|
---|
2470 | * isn't updated by AMD-V. Observed on some AMD Fusion CPUs with 64-bit guests.
|
---|
2471 | * See AMD spec. 15.5.1 "Basic operation".
|
---|
2472 | */
|
---|
2473 | Assert(!(pVmcb->guest.u8CPL & ~0x3));
|
---|
2474 | uint8_t const uCpl = pVmcb->guest.u8CPL;
|
---|
2475 | if (pMixedCtx->ss.Attr.n.u2Dpl != uCpl)
|
---|
2476 | {
|
---|
2477 | Log4(("hmR0SvmSaveGuestState: CPL differs. SS.DPL=%u, CPL=%u, overwriting SS.DPL!\n", pMixedCtx->ss.Attr.n.u2Dpl, uCpl));
|
---|
2478 | pMixedCtx->ss.Attr.n.u2Dpl = pVmcb->guest.u8CPL & 0x3;
|
---|
2479 | }
|
---|
2480 |
|
---|
2481 | /*
|
---|
2482 | * Guest TR.
|
---|
2483 | * Fixup TR attributes so it's compatible with Intel. Important when saved-states are used
|
---|
2484 | * between Intel and AMD. See @bugref{6208#c39}.
|
---|
2485 | * ASSUME that it's normally correct and that we're in 32-bit or 64-bit mode.
|
---|
2486 | */
|
---|
2487 | HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, TR, tr);
|
---|
2488 | if (pMixedCtx->tr.Attr.n.u4Type != X86_SEL_TYPE_SYS_386_TSS_BUSY)
|
---|
2489 | {
|
---|
2490 | if ( pMixedCtx->tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_386_TSS_AVAIL
|
---|
2491 | || CPUMIsGuestInLongModeEx(pMixedCtx))
|
---|
2492 | pMixedCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_386_TSS_BUSY;
|
---|
2493 | else if (pMixedCtx->tr.Attr.n.u4Type == X86_SEL_TYPE_SYS_286_TSS_AVAIL)
|
---|
2494 | pMixedCtx->tr.Attr.n.u4Type = X86_SEL_TYPE_SYS_286_TSS_BUSY;
|
---|
2495 | }
|
---|
2496 |
|
---|
2497 | /*
|
---|
2498 | * Guest Descriptor-Table registers.
|
---|
2499 | */
|
---|
2500 | HMSVM_SEG_REG_COPY_FROM_VMCB(pMixedCtx, &pVmcb->guest, LDTR, ldtr);
|
---|
2501 | pMixedCtx->gdtr.cbGdt = pVmcb->guest.GDTR.u32Limit;
|
---|
2502 | pMixedCtx->gdtr.pGdt = pVmcb->guest.GDTR.u64Base;
|
---|
2503 |
|
---|
2504 | pMixedCtx->idtr.cbIdt = pVmcb->guest.IDTR.u32Limit;
|
---|
2505 | pMixedCtx->idtr.pIdt = pVmcb->guest.IDTR.u64Base;
|
---|
2506 |
|
---|
2507 | /*
|
---|
2508 | * Guest Debug registers.
|
---|
2509 | */
|
---|
2510 | if (!pVCpu->hm.s.fUsingHyperDR7)
|
---|
2511 | {
|
---|
2512 | pMixedCtx->dr[6] = pVmcb->guest.u64DR6;
|
---|
2513 | pMixedCtx->dr[7] = pVmcb->guest.u64DR7;
|
---|
2514 | }
|
---|
2515 | else
|
---|
2516 | {
|
---|
2517 | Assert(pVmcb->guest.u64DR7 == CPUMGetHyperDR7(pVCpu));
|
---|
2518 | CPUMSetHyperDR6(pVCpu, pVmcb->guest.u64DR6);
|
---|
2519 | }
|
---|
2520 |
|
---|
2521 | /*
|
---|
2522 | * With Nested Paging, CR3 changes are not intercepted. Therefore, sync. it now.
|
---|
2523 | * This is done as the very last step of syncing the guest state, as PGMUpdateCR3() may cause longjmp's to ring-3.
|
---|
2524 | */
|
---|
2525 | if ( pVmcb->ctrl.NestedPaging.n.u1NestedPaging
|
---|
2526 | && pMixedCtx->cr3 != pVmcb->guest.u64CR3)
|
---|
2527 | {
|
---|
2528 | CPUMSetGuestCR3(pVCpu, pVmcb->guest.u64CR3);
|
---|
2529 | PGMUpdateCR3(pVCpu, pVmcb->guest.u64CR3);
|
---|
2530 | }
|
---|
2531 |
|
---|
2532 | if (CPUMIsGuestInSvmNestedHwVirtMode(pMixedCtx))
|
---|
2533 | {
|
---|
2534 | Log4(("hmR0SvmSaveGuestState: CS:RIP=%04x:%RX64 EFL=%#x CR0=%#RX32 CR3=%#RX32 CR4=%#RX32 ESP=%#RX32 EBP=%#RX32\n",
|
---|
2535 | pMixedCtx->cs.Sel, pMixedCtx->rip, pMixedCtx->eflags.u, pMixedCtx->cr0, pMixedCtx->cr3, pMixedCtx->cr4,
|
---|
2536 | pMixedCtx->esp, pMixedCtx->ebp));
|
---|
2537 | Log4(("hmR0SvmSaveGuestState: SS={%04x base=%016RX64 limit=%08x flags=%08x}\n", pMixedCtx->ss.Sel, pMixedCtx->ss.u64Base,
|
---|
2538 | pMixedCtx->ss.u32Limit, pMixedCtx->ss.Attr.u));
|
---|
2539 | Log4(("hmR0SvmSaveGuestState: DBGCTL BR_FROM=%#RX64 BR_TO=%#RX64 XcptFrom=%#RX64 XcptTo=%#RX64\n",
|
---|
2540 | pVmcb->guest.u64BR_FROM, pVmcb->guest.u64BR_TO,pVmcb->guest.u64LASTEXCPFROM, pVmcb->guest.u64LASTEXCPTO));
|
---|
2541 | }
|
---|
2542 | }
|
---|
2543 |
|
---|
2544 |
|
---|
2545 | /**
|
---|
2546 | * Does the necessary state syncing before returning to ring-3 for any reason
|
---|
2547 | * (longjmp, preemption, voluntary exits to ring-3) from AMD-V.
|
---|
2548 | *
|
---|
2549 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2550 | *
|
---|
2551 | * @remarks No-long-jmp zone!!!
|
---|
2552 | */
|
---|
2553 | static void hmR0SvmLeave(PVMCPU pVCpu)
|
---|
2554 | {
|
---|
2555 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
2556 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2557 | Assert(VMMR0IsLogFlushDisabled(pVCpu));
|
---|
2558 |
|
---|
2559 | /*
|
---|
2560 | * !!! IMPORTANT !!!
|
---|
2561 | * If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
|
---|
2562 | */
|
---|
2563 |
|
---|
2564 | /* Restore host FPU state if necessary and resync on next R0 reentry .*/
|
---|
2565 | if (CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu))
|
---|
2566 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0); /** @todo r=ramshankar: This shouldn't be necessary, it's set in HMR0EnterCpu. */
|
---|
2567 |
|
---|
2568 | /*
|
---|
2569 | * Restore host debug registers if necessary and resync on next R0 reentry.
|
---|
2570 | */
|
---|
2571 | #ifdef VBOX_STRICT
|
---|
2572 | if (CPUMIsHyperDebugStateActive(pVCpu))
|
---|
2573 | {
|
---|
2574 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb; /** @todo nested-guest. */
|
---|
2575 | Assert(pVmcb->ctrl.u16InterceptRdDRx == 0xffff);
|
---|
2576 | Assert(pVmcb->ctrl.u16InterceptWrDRx == 0xffff);
|
---|
2577 | }
|
---|
2578 | #endif
|
---|
2579 | if (CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */))
|
---|
2580 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);/** @todo r=ramshankar: This shouldn't be necessary, it's set in HMR0EnterCpu. */
|
---|
2581 |
|
---|
2582 | Assert(!CPUMIsHyperDebugStateActive(pVCpu));
|
---|
2583 | Assert(!CPUMIsGuestDebugStateActive(pVCpu));
|
---|
2584 |
|
---|
2585 | STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatEntry);
|
---|
2586 | STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatLoadGuestState);
|
---|
2587 | STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit1);
|
---|
2588 | STAM_PROFILE_ADV_SET_STOPPED(&pVCpu->hm.s.StatExit2);
|
---|
2589 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
|
---|
2590 |
|
---|
2591 | VMCPU_CMPXCHG_STATE(pVCpu, VMCPUSTATE_STARTED_HM, VMCPUSTATE_STARTED_EXEC);
|
---|
2592 | }
|
---|
2593 |
|
---|
2594 |
|
---|
2595 | /**
|
---|
2596 | * Leaves the AMD-V session.
|
---|
2597 | *
|
---|
2598 | * @returns VBox status code.
|
---|
2599 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2600 | */
|
---|
2601 | static int hmR0SvmLeaveSession(PVMCPU pVCpu)
|
---|
2602 | {
|
---|
2603 | HM_DISABLE_PREEMPT();
|
---|
2604 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2605 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
2606 |
|
---|
2607 | /* When thread-context hooks are used, we can avoid doing the leave again if we had been preempted before
|
---|
2608 | and done this from the SVMR0ThreadCtxCallback(). */
|
---|
2609 | if (!pVCpu->hm.s.fLeaveDone)
|
---|
2610 | {
|
---|
2611 | hmR0SvmLeave(pVCpu);
|
---|
2612 | pVCpu->hm.s.fLeaveDone = true;
|
---|
2613 | }
|
---|
2614 |
|
---|
2615 | /*
|
---|
2616 | * !!! IMPORTANT !!!
|
---|
2617 | * If you modify code here, make sure to check whether hmR0SvmCallRing3Callback() needs to be updated too.
|
---|
2618 | */
|
---|
2619 |
|
---|
2620 | /** @todo eliminate the need for calling VMMR0ThreadCtxHookDisable here! */
|
---|
2621 | /* Deregister hook now that we've left HM context before re-enabling preemption. */
|
---|
2622 | VMMR0ThreadCtxHookDisable(pVCpu);
|
---|
2623 |
|
---|
2624 | /* Leave HM context. This takes care of local init (term). */
|
---|
2625 | int rc = HMR0LeaveCpu(pVCpu);
|
---|
2626 |
|
---|
2627 | HM_RESTORE_PREEMPT();
|
---|
2628 | return rc;
|
---|
2629 | }
|
---|
2630 |
|
---|
2631 |
|
---|
2632 | /**
|
---|
2633 | * Does the necessary state syncing before doing a longjmp to ring-3.
|
---|
2634 | *
|
---|
2635 | * @returns VBox status code.
|
---|
2636 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2637 | *
|
---|
2638 | * @remarks No-long-jmp zone!!!
|
---|
2639 | */
|
---|
2640 | static int hmR0SvmLongJmpToRing3(PVMCPU pVCpu)
|
---|
2641 | {
|
---|
2642 | return hmR0SvmLeaveSession(pVCpu);
|
---|
2643 | }
|
---|
2644 |
|
---|
2645 |
|
---|
2646 | /**
|
---|
2647 | * VMMRZCallRing3() callback wrapper which saves the guest state (or restores
|
---|
2648 | * any remaining host state) before we longjump to ring-3 and possibly get
|
---|
2649 | * preempted.
|
---|
2650 | *
|
---|
2651 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2652 | * @param enmOperation The operation causing the ring-3 longjump.
|
---|
2653 | * @param pvUser The user argument (pointer to the possibly
|
---|
2654 | * out-of-date guest-CPU context).
|
---|
2655 | */
|
---|
2656 | static DECLCALLBACK(int) hmR0SvmCallRing3Callback(PVMCPU pVCpu, VMMCALLRING3 enmOperation, void *pvUser)
|
---|
2657 | {
|
---|
2658 | RT_NOREF_PV(pvUser);
|
---|
2659 |
|
---|
2660 | if (enmOperation == VMMCALLRING3_VM_R0_ASSERTION)
|
---|
2661 | {
|
---|
2662 | /*
|
---|
2663 | * !!! IMPORTANT !!!
|
---|
2664 | * If you modify code here, make sure to check whether hmR0SvmLeave() and hmR0SvmLeaveSession() needs
|
---|
2665 | * to be updated too. This is a stripped down version which gets out ASAP trying to not trigger any assertion.
|
---|
2666 | */
|
---|
2667 | VMMRZCallRing3RemoveNotification(pVCpu);
|
---|
2668 | VMMRZCallRing3Disable(pVCpu);
|
---|
2669 | HM_DISABLE_PREEMPT();
|
---|
2670 |
|
---|
2671 | /* Restore host FPU state if necessary and resync on next R0 reentry. */
|
---|
2672 | CPUMR0FpuStateMaybeSaveGuestAndRestoreHost(pVCpu);
|
---|
2673 |
|
---|
2674 | /* Restore host debug registers if necessary and resync on next R0 reentry. */
|
---|
2675 | CPUMR0DebugStateMaybeSaveGuestAndRestoreHost(pVCpu, false /* save DR6 */);
|
---|
2676 |
|
---|
2677 | /* Deregister the hook now that we've left HM context before re-enabling preemption. */
|
---|
2678 | /** @todo eliminate the need for calling VMMR0ThreadCtxHookDisable here! */
|
---|
2679 | VMMR0ThreadCtxHookDisable(pVCpu);
|
---|
2680 |
|
---|
2681 | /* Leave HM context. This takes care of local init (term). */
|
---|
2682 | HMR0LeaveCpu(pVCpu);
|
---|
2683 |
|
---|
2684 | HM_RESTORE_PREEMPT();
|
---|
2685 | return VINF_SUCCESS;
|
---|
2686 | }
|
---|
2687 |
|
---|
2688 | Assert(pVCpu);
|
---|
2689 | Assert(pvUser);
|
---|
2690 | Assert(VMMRZCallRing3IsEnabled(pVCpu));
|
---|
2691 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
2692 |
|
---|
2693 | VMMRZCallRing3Disable(pVCpu);
|
---|
2694 | Assert(VMMR0IsLogFlushDisabled(pVCpu));
|
---|
2695 |
|
---|
2696 | Log4(("hmR0SvmCallRing3Callback->hmR0SvmLongJmpToRing3\n"));
|
---|
2697 | int rc = hmR0SvmLongJmpToRing3(pVCpu);
|
---|
2698 | AssertRCReturn(rc, rc);
|
---|
2699 |
|
---|
2700 | VMMRZCallRing3Enable(pVCpu);
|
---|
2701 | return VINF_SUCCESS;
|
---|
2702 | }
|
---|
2703 |
|
---|
2704 |
|
---|
2705 | /**
|
---|
2706 | * Take necessary actions before going back to ring-3.
|
---|
2707 | *
|
---|
2708 | * An action requires us to go back to ring-3. This function does the necessary
|
---|
2709 | * steps before we can safely return to ring-3. This is not the same as longjmps
|
---|
2710 | * to ring-3, this is voluntary.
|
---|
2711 | *
|
---|
2712 | * @returns VBox status code.
|
---|
2713 | * @param pVM The cross context VM structure.
|
---|
2714 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2715 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2716 | * @param rcExit The reason for exiting to ring-3. Can be
|
---|
2717 | * VINF_VMM_UNKNOWN_RING3_CALL.
|
---|
2718 | */
|
---|
2719 | static int hmR0SvmExitToRing3(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, int rcExit)
|
---|
2720 | {
|
---|
2721 | Assert(pVM);
|
---|
2722 | Assert(pVCpu);
|
---|
2723 | Assert(pCtx);
|
---|
2724 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
2725 |
|
---|
2726 | /* Please, no longjumps here (any logging shouldn't flush jump back to ring-3). NO LOGGING BEFORE THIS POINT! */
|
---|
2727 | VMMRZCallRing3Disable(pVCpu);
|
---|
2728 | Log4(("hmR0SvmExitToRing3: VCPU[%u]: rcExit=%d LocalFF=%#RX32 GlobalFF=%#RX32\n", pVCpu->idCpu, rcExit,
|
---|
2729 | pVCpu->fLocalForcedActions, pVM->fGlobalForcedActions));
|
---|
2730 |
|
---|
2731 | /* We need to do this only while truly exiting the "inner loop" back to ring-3 and -not- for any longjmp to ring3. */
|
---|
2732 | if (pVCpu->hm.s.Event.fPending)
|
---|
2733 | {
|
---|
2734 | hmR0SvmPendingEventToTrpmTrap(pVCpu);
|
---|
2735 | Assert(!pVCpu->hm.s.Event.fPending);
|
---|
2736 | }
|
---|
2737 |
|
---|
2738 | /* Sync. the necessary state for going back to ring-3. */
|
---|
2739 | hmR0SvmLeaveSession(pVCpu);
|
---|
2740 | STAM_COUNTER_DEC(&pVCpu->hm.s.StatSwitchLongJmpToR3);
|
---|
2741 |
|
---|
2742 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
|
---|
2743 | CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_SYSENTER_MSR
|
---|
2744 | | CPUM_CHANGED_LDTR
|
---|
2745 | | CPUM_CHANGED_GDTR
|
---|
2746 | | CPUM_CHANGED_IDTR
|
---|
2747 | | CPUM_CHANGED_TR
|
---|
2748 | | CPUM_CHANGED_HIDDEN_SEL_REGS);
|
---|
2749 | if ( pVM->hm.s.fNestedPaging
|
---|
2750 | && CPUMIsGuestPagingEnabledEx(pCtx))
|
---|
2751 | {
|
---|
2752 | CPUMSetChangedFlags(pVCpu, CPUM_CHANGED_GLOBAL_TLB_FLUSH);
|
---|
2753 | }
|
---|
2754 |
|
---|
2755 | /* On our way back from ring-3 reload the guest state if there is a possibility of it being changed. */
|
---|
2756 | if (rcExit != VINF_EM_RAW_INTERRUPT)
|
---|
2757 | HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
|
---|
2758 |
|
---|
2759 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchExitToR3);
|
---|
2760 |
|
---|
2761 | /* We do -not- want any longjmp notifications after this! We must return to ring-3 ASAP. */
|
---|
2762 | VMMRZCallRing3RemoveNotification(pVCpu);
|
---|
2763 | VMMRZCallRing3Enable(pVCpu);
|
---|
2764 |
|
---|
2765 | /*
|
---|
2766 | * If we're emulating an instruction, we shouldn't have any TRPM traps pending
|
---|
2767 | * and if we're injecting an event we should have a TRPM trap pending.
|
---|
2768 | */
|
---|
2769 | AssertReturnStmt(rcExit != VINF_EM_RAW_INJECT_TRPM_EVENT || TRPMHasTrap(pVCpu),
|
---|
2770 | pVCpu->hm.s.u32HMError = rcExit,
|
---|
2771 | VERR_SVM_IPE_5);
|
---|
2772 | AssertReturnStmt(rcExit != VINF_EM_RAW_EMULATE_INSTR || !TRPMHasTrap(pVCpu),
|
---|
2773 | pVCpu->hm.s.u32HMError = rcExit,
|
---|
2774 | VERR_SVM_IPE_4);
|
---|
2775 |
|
---|
2776 | return rcExit;
|
---|
2777 | }
|
---|
2778 |
|
---|
2779 |
|
---|
2780 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
2781 | /**
|
---|
2782 | * Updates the use of TSC offsetting mode for the CPU and adjusts the necessary
|
---|
2783 | * intercepts for the nested-guest.
|
---|
2784 | *
|
---|
2785 | * @param pVM The cross context VM structure.
|
---|
2786 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2787 | * @param pCtx Pointer to the nested guest-CPU context.
|
---|
2788 | * @param pVmcbNstGst Pointer to the nested-guest VM control block.
|
---|
2789 | *
|
---|
2790 | * @remarks No-long-jump zone!!!
|
---|
2791 | */
|
---|
2792 | static void hmR0SvmUpdateTscOffsettingNested(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMVMCB pVmcbNstGst)
|
---|
2793 | {
|
---|
2794 | Assert(CPUMIsGuestInSvmNestedHwVirtMode(pCtx));
|
---|
2795 |
|
---|
2796 | bool fParavirtTsc;
|
---|
2797 | uint64_t uTscOffset;
|
---|
2798 | bool fCanUseRealTsc = TMCpuTickCanUseRealTSC(pVM, pVCpu, &uTscOffset, &fParavirtTsc);
|
---|
2799 |
|
---|
2800 | PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = &pVCpu->hm.s.svm.NstGstVmcbCache;
|
---|
2801 | PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
|
---|
2802 |
|
---|
2803 | /*
|
---|
2804 | * Only avoid intercepting if we determined the host TSC (++) is stable enough
|
---|
2805 | * to not intercept -and- the nested-hypervisor itself does not want to intercept it.
|
---|
2806 | */
|
---|
2807 | if ( fCanUseRealTsc
|
---|
2808 | && !(pVmcbNstGstCache->u64InterceptCtrl & (SVM_CTRL_INTERCEPT_RDTSC | SVM_CTRL_INTERCEPT_RDTSCP)))
|
---|
2809 | {
|
---|
2810 | pVmcbNstGstCtrl->u64InterceptCtrl &= ~SVM_CTRL_INTERCEPT_RDTSC;
|
---|
2811 | pVmcbNstGstCtrl->u64InterceptCtrl &= ~SVM_CTRL_INTERCEPT_RDTSCP;
|
---|
2812 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
|
---|
2813 | }
|
---|
2814 | else
|
---|
2815 | {
|
---|
2816 | pVmcbNstGstCtrl->u64InterceptCtrl |= SVM_CTRL_INTERCEPT_RDTSC;
|
---|
2817 | pVmcbNstGstCtrl->u64InterceptCtrl |= SVM_CTRL_INTERCEPT_RDTSCP;
|
---|
2818 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
|
---|
2819 | }
|
---|
2820 |
|
---|
2821 | /* Apply the nested-guest VMCB's TSC offset over the guest one. */
|
---|
2822 | uTscOffset = CPUMApplyNestedGuestTscOffset(pVCpu, uTscOffset);
|
---|
2823 |
|
---|
2824 | /* Update the nested-guest VMCB with the combined TSC offset (of guest and nested-guest). */
|
---|
2825 | pVmcbNstGstCtrl->u64TSCOffset = uTscOffset;
|
---|
2826 |
|
---|
2827 | /* Finally update the VMCB clean bits since we touched the intercepts as well as the TSC offset. */
|
---|
2828 | pVmcbNstGstCtrl->u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
2829 |
|
---|
2830 | if (fParavirtTsc)
|
---|
2831 | {
|
---|
2832 | /* Currently neither Hyper-V nor KVM need to update their paravirt. TSC
|
---|
2833 | information before every VM-entry, hence disable it for performance sake. */
|
---|
2834 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscParavirt);
|
---|
2835 | }
|
---|
2836 | }
|
---|
2837 | #endif
|
---|
2838 |
|
---|
2839 |
|
---|
2840 | /**
|
---|
2841 | * Updates the use of TSC offsetting mode for the CPU and adjusts the necessary
|
---|
2842 | * intercepts.
|
---|
2843 | *
|
---|
2844 | * @param pVM The cross context VM structure.
|
---|
2845 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2846 | * @param pVmcb Pointer to the VM control block.
|
---|
2847 | *
|
---|
2848 | * @remarks No-long-jump zone!!!
|
---|
2849 | */
|
---|
2850 | static void hmR0SvmUpdateTscOffsetting(PVM pVM, PVMCPU pVCpu, PSVMVMCB pVmcb)
|
---|
2851 | {
|
---|
2852 | bool fParavirtTsc;
|
---|
2853 | bool fCanUseRealTsc = TMCpuTickCanUseRealTSC(pVM, pVCpu, &pVmcb->ctrl.u64TSCOffset, &fParavirtTsc);
|
---|
2854 | if (fCanUseRealTsc)
|
---|
2855 | {
|
---|
2856 | pVmcb->ctrl.u64InterceptCtrl &= ~SVM_CTRL_INTERCEPT_RDTSC;
|
---|
2857 | pVmcb->ctrl.u64InterceptCtrl &= ~SVM_CTRL_INTERCEPT_RDTSCP;
|
---|
2858 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscOffset);
|
---|
2859 | }
|
---|
2860 | else
|
---|
2861 | {
|
---|
2862 | pVmcb->ctrl.u64InterceptCtrl |= SVM_CTRL_INTERCEPT_RDTSC;
|
---|
2863 | pVmcb->ctrl.u64InterceptCtrl |= SVM_CTRL_INTERCEPT_RDTSCP;
|
---|
2864 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscIntercept);
|
---|
2865 | }
|
---|
2866 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
2867 |
|
---|
2868 | /** @todo later optimize this to be done elsewhere and not before every
|
---|
2869 | * VM-entry. */
|
---|
2870 | if (fParavirtTsc)
|
---|
2871 | {
|
---|
2872 | /* Currently neither Hyper-V nor KVM need to update their paravirt. TSC
|
---|
2873 | information before every VM-entry, hence disable it for performance sake. */
|
---|
2874 | #if 0
|
---|
2875 | int rc = GIMR0UpdateParavirtTsc(pVM, 0 /* u64Offset */);
|
---|
2876 | AssertRC(rc);
|
---|
2877 | #endif
|
---|
2878 | STAM_COUNTER_INC(&pVCpu->hm.s.StatTscParavirt);
|
---|
2879 | }
|
---|
2880 | }
|
---|
2881 |
|
---|
2882 |
|
---|
2883 | /**
|
---|
2884 | * Sets an event as a pending event to be injected into the guest.
|
---|
2885 | *
|
---|
2886 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2887 | * @param pEvent Pointer to the SVM event.
|
---|
2888 | * @param GCPtrFaultAddress The fault-address (CR2) in case it's a
|
---|
2889 | * page-fault.
|
---|
2890 | *
|
---|
2891 | * @remarks Statistics counter assumes this is a guest event being reflected to
|
---|
2892 | * the guest i.e. 'StatInjectPendingReflect' is incremented always.
|
---|
2893 | */
|
---|
2894 | DECLINLINE(void) hmR0SvmSetPendingEvent(PVMCPU pVCpu, PSVMEVENT pEvent, RTGCUINTPTR GCPtrFaultAddress)
|
---|
2895 | {
|
---|
2896 | Assert(!pVCpu->hm.s.Event.fPending);
|
---|
2897 | Assert(pEvent->n.u1Valid);
|
---|
2898 |
|
---|
2899 | pVCpu->hm.s.Event.u64IntInfo = pEvent->u;
|
---|
2900 | pVCpu->hm.s.Event.fPending = true;
|
---|
2901 | pVCpu->hm.s.Event.GCPtrFaultAddress = GCPtrFaultAddress;
|
---|
2902 |
|
---|
2903 | Log4(("hmR0SvmSetPendingEvent: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
|
---|
2904 | pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
|
---|
2905 | }
|
---|
2906 |
|
---|
2907 |
|
---|
2908 | /**
|
---|
2909 | * Sets an invalid-opcode (\#UD) exception as pending-for-injection into the VM.
|
---|
2910 | *
|
---|
2911 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2912 | */
|
---|
2913 | DECLINLINE(void) hmR0SvmSetPendingXcptUD(PVMCPU pVCpu)
|
---|
2914 | {
|
---|
2915 | SVMEVENT Event;
|
---|
2916 | Event.u = 0;
|
---|
2917 | Event.n.u1Valid = 1;
|
---|
2918 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
2919 | Event.n.u8Vector = X86_XCPT_UD;
|
---|
2920 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
2921 | }
|
---|
2922 |
|
---|
2923 |
|
---|
2924 | /**
|
---|
2925 | * Sets a debug (\#DB) exception as pending-for-injection into the VM.
|
---|
2926 | *
|
---|
2927 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2928 | */
|
---|
2929 | DECLINLINE(void) hmR0SvmSetPendingXcptDB(PVMCPU pVCpu)
|
---|
2930 | {
|
---|
2931 | SVMEVENT Event;
|
---|
2932 | Event.u = 0;
|
---|
2933 | Event.n.u1Valid = 1;
|
---|
2934 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
2935 | Event.n.u8Vector = X86_XCPT_DB;
|
---|
2936 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
2937 | }
|
---|
2938 |
|
---|
2939 |
|
---|
2940 | /**
|
---|
2941 | * Sets a page fault (\#PF) exception as pending-for-injection into the VM.
|
---|
2942 | *
|
---|
2943 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2944 | * @param pCtx Pointer to the guest-CPU context.
|
---|
2945 | * @param u32ErrCode The error-code for the page-fault.
|
---|
2946 | * @param uFaultAddress The page fault address (CR2).
|
---|
2947 | *
|
---|
2948 | * @remarks This updates the guest CR2 with @a uFaultAddress!
|
---|
2949 | */
|
---|
2950 | DECLINLINE(void) hmR0SvmSetPendingXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t u32ErrCode, RTGCUINTPTR uFaultAddress)
|
---|
2951 | {
|
---|
2952 | SVMEVENT Event;
|
---|
2953 | Event.u = 0;
|
---|
2954 | Event.n.u1Valid = 1;
|
---|
2955 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
2956 | Event.n.u8Vector = X86_XCPT_PF;
|
---|
2957 | Event.n.u1ErrorCodeValid = 1;
|
---|
2958 | Event.n.u32ErrorCode = u32ErrCode;
|
---|
2959 |
|
---|
2960 | /* Update CR2 of the guest. */
|
---|
2961 | if (pCtx->cr2 != uFaultAddress)
|
---|
2962 | {
|
---|
2963 | pCtx->cr2 = uFaultAddress;
|
---|
2964 | /* The VMCB clean bit for CR2 will be updated while re-loading the guest state. */
|
---|
2965 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR2);
|
---|
2966 | }
|
---|
2967 |
|
---|
2968 | hmR0SvmSetPendingEvent(pVCpu, &Event, uFaultAddress);
|
---|
2969 | }
|
---|
2970 |
|
---|
2971 |
|
---|
2972 | /**
|
---|
2973 | * Sets a device-not-available (\#NM) exception as pending-for-injection into
|
---|
2974 | * the VM.
|
---|
2975 | *
|
---|
2976 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2977 | */
|
---|
2978 | DECLINLINE(void) hmR0SvmSetPendingXcptNM(PVMCPU pVCpu)
|
---|
2979 | {
|
---|
2980 | SVMEVENT Event;
|
---|
2981 | Event.u = 0;
|
---|
2982 | Event.n.u1Valid = 1;
|
---|
2983 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
2984 | Event.n.u8Vector = X86_XCPT_NM;
|
---|
2985 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
2986 | }
|
---|
2987 |
|
---|
2988 |
|
---|
2989 | /**
|
---|
2990 | * Sets a math-fault (\#MF) exception as pending-for-injection into the VM.
|
---|
2991 | *
|
---|
2992 | * @param pVCpu The cross context virtual CPU structure.
|
---|
2993 | */
|
---|
2994 | DECLINLINE(void) hmR0SvmSetPendingXcptMF(PVMCPU pVCpu)
|
---|
2995 | {
|
---|
2996 | SVMEVENT Event;
|
---|
2997 | Event.u = 0;
|
---|
2998 | Event.n.u1Valid = 1;
|
---|
2999 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3000 | Event.n.u8Vector = X86_XCPT_MF;
|
---|
3001 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3002 | }
|
---|
3003 |
|
---|
3004 |
|
---|
3005 | /**
|
---|
3006 | * Sets a double fault (\#DF) exception as pending-for-injection into the VM.
|
---|
3007 | *
|
---|
3008 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3009 | */
|
---|
3010 | DECLINLINE(void) hmR0SvmSetPendingXcptDF(PVMCPU pVCpu)
|
---|
3011 | {
|
---|
3012 | SVMEVENT Event;
|
---|
3013 | Event.u = 0;
|
---|
3014 | Event.n.u1Valid = 1;
|
---|
3015 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3016 | Event.n.u8Vector = X86_XCPT_DF;
|
---|
3017 | Event.n.u1ErrorCodeValid = 1;
|
---|
3018 | Event.n.u32ErrorCode = 0;
|
---|
3019 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3020 | }
|
---|
3021 |
|
---|
3022 |
|
---|
3023 | /**
|
---|
3024 | * Injects an event into the guest upon VMRUN by updating the relevant field
|
---|
3025 | * in the VMCB.
|
---|
3026 | *
|
---|
3027 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3028 | * @param pVmcb Pointer to the guest VM control block.
|
---|
3029 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3030 | * @param pEvent Pointer to the event.
|
---|
3031 | *
|
---|
3032 | * @remarks No-long-jump zone!!!
|
---|
3033 | * @remarks Requires CR0!
|
---|
3034 | */
|
---|
3035 | DECLINLINE(void) hmR0SvmInjectEventVmcb(PVMCPU pVCpu, PSVMVMCB pVmcb, PCPUMCTX pCtx, PSVMEVENT pEvent)
|
---|
3036 | {
|
---|
3037 | NOREF(pVCpu); NOREF(pCtx);
|
---|
3038 |
|
---|
3039 | Assert(!pVmcb->ctrl.EventInject.n.u1Valid);
|
---|
3040 | pVmcb->ctrl.EventInject.u = pEvent->u;
|
---|
3041 | STAM_COUNTER_INC(&pVCpu->hm.s.paStatInjectedIrqsR0[pEvent->n.u8Vector & MASK_INJECT_IRQ_STAT]);
|
---|
3042 |
|
---|
3043 | Log4(("hmR0SvmInjectEventVmcb: u=%#RX64 u8Vector=%#x Type=%#x ErrorCodeValid=%RTbool ErrorCode=%#RX32\n", pEvent->u,
|
---|
3044 | pEvent->n.u8Vector, (uint8_t)pEvent->n.u3Type, !!pEvent->n.u1ErrorCodeValid, pEvent->n.u32ErrorCode));
|
---|
3045 | }
|
---|
3046 |
|
---|
3047 |
|
---|
3048 |
|
---|
3049 | /**
|
---|
3050 | * Converts any TRPM trap into a pending HM event. This is typically used when
|
---|
3051 | * entering from ring-3 (not longjmp returns).
|
---|
3052 | *
|
---|
3053 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3054 | */
|
---|
3055 | static void hmR0SvmTrpmTrapToPendingEvent(PVMCPU pVCpu)
|
---|
3056 | {
|
---|
3057 | Assert(TRPMHasTrap(pVCpu));
|
---|
3058 | Assert(!pVCpu->hm.s.Event.fPending);
|
---|
3059 |
|
---|
3060 | uint8_t uVector;
|
---|
3061 | TRPMEVENT enmTrpmEvent;
|
---|
3062 | RTGCUINT uErrCode;
|
---|
3063 | RTGCUINTPTR GCPtrFaultAddress;
|
---|
3064 | uint8_t cbInstr;
|
---|
3065 |
|
---|
3066 | int rc = TRPMQueryTrapAll(pVCpu, &uVector, &enmTrpmEvent, &uErrCode, &GCPtrFaultAddress, &cbInstr);
|
---|
3067 | AssertRC(rc);
|
---|
3068 |
|
---|
3069 | SVMEVENT Event;
|
---|
3070 | Event.u = 0;
|
---|
3071 | Event.n.u1Valid = 1;
|
---|
3072 | Event.n.u8Vector = uVector;
|
---|
3073 |
|
---|
3074 | /* Refer AMD spec. 15.20 "Event Injection" for the format. */
|
---|
3075 | if (enmTrpmEvent == TRPM_TRAP)
|
---|
3076 | {
|
---|
3077 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
3078 | switch (uVector)
|
---|
3079 | {
|
---|
3080 | case X86_XCPT_NMI:
|
---|
3081 | {
|
---|
3082 | Event.n.u3Type = SVM_EVENT_NMI;
|
---|
3083 | break;
|
---|
3084 | }
|
---|
3085 |
|
---|
3086 | case X86_XCPT_PF:
|
---|
3087 | case X86_XCPT_DF:
|
---|
3088 | case X86_XCPT_TS:
|
---|
3089 | case X86_XCPT_NP:
|
---|
3090 | case X86_XCPT_SS:
|
---|
3091 | case X86_XCPT_GP:
|
---|
3092 | case X86_XCPT_AC:
|
---|
3093 | {
|
---|
3094 | Event.n.u1ErrorCodeValid = 1;
|
---|
3095 | Event.n.u32ErrorCode = uErrCode;
|
---|
3096 | break;
|
---|
3097 | }
|
---|
3098 | }
|
---|
3099 | }
|
---|
3100 | else if (enmTrpmEvent == TRPM_HARDWARE_INT)
|
---|
3101 | Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
|
---|
3102 | else if (enmTrpmEvent == TRPM_SOFTWARE_INT)
|
---|
3103 | Event.n.u3Type = SVM_EVENT_SOFTWARE_INT;
|
---|
3104 | else
|
---|
3105 | AssertMsgFailed(("Invalid TRPM event type %d\n", enmTrpmEvent));
|
---|
3106 |
|
---|
3107 | rc = TRPMResetTrap(pVCpu);
|
---|
3108 | AssertRC(rc);
|
---|
3109 |
|
---|
3110 | Log4(("TRPM->HM event: u=%#RX64 u8Vector=%#x uErrorCodeValid=%RTbool uErrorCode=%#RX32\n", Event.u, Event.n.u8Vector,
|
---|
3111 | !!Event.n.u1ErrorCodeValid, Event.n.u32ErrorCode));
|
---|
3112 |
|
---|
3113 | hmR0SvmSetPendingEvent(pVCpu, &Event, GCPtrFaultAddress);
|
---|
3114 | }
|
---|
3115 |
|
---|
3116 |
|
---|
3117 | /**
|
---|
3118 | * Converts any pending SVM event into a TRPM trap. Typically used when leaving
|
---|
3119 | * AMD-V to execute any instruction.
|
---|
3120 | *
|
---|
3121 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3122 | */
|
---|
3123 | static void hmR0SvmPendingEventToTrpmTrap(PVMCPU pVCpu)
|
---|
3124 | {
|
---|
3125 | Assert(pVCpu->hm.s.Event.fPending);
|
---|
3126 | Assert(TRPMQueryTrap(pVCpu, NULL /* pu8TrapNo */, NULL /* pEnmType */) == VERR_TRPM_NO_ACTIVE_TRAP);
|
---|
3127 |
|
---|
3128 | SVMEVENT Event;
|
---|
3129 | Event.u = pVCpu->hm.s.Event.u64IntInfo;
|
---|
3130 |
|
---|
3131 | uint8_t uVector = Event.n.u8Vector;
|
---|
3132 | uint8_t uVectorType = Event.n.u3Type;
|
---|
3133 | TRPMEVENT enmTrapType = HMSvmEventToTrpmEventType(&Event);
|
---|
3134 |
|
---|
3135 | Log4(("HM event->TRPM: uVector=%#x enmTrapType=%d\n", uVector, uVectorType));
|
---|
3136 |
|
---|
3137 | int rc = TRPMAssertTrap(pVCpu, uVector, enmTrapType);
|
---|
3138 | AssertRC(rc);
|
---|
3139 |
|
---|
3140 | if (Event.n.u1ErrorCodeValid)
|
---|
3141 | TRPMSetErrorCode(pVCpu, Event.n.u32ErrorCode);
|
---|
3142 |
|
---|
3143 | if ( uVectorType == SVM_EVENT_EXCEPTION
|
---|
3144 | && uVector == X86_XCPT_PF)
|
---|
3145 | {
|
---|
3146 | TRPMSetFaultAddress(pVCpu, pVCpu->hm.s.Event.GCPtrFaultAddress);
|
---|
3147 | Assert(pVCpu->hm.s.Event.GCPtrFaultAddress == CPUMGetGuestCR2(pVCpu));
|
---|
3148 | }
|
---|
3149 | else if (uVectorType == SVM_EVENT_SOFTWARE_INT)
|
---|
3150 | {
|
---|
3151 | AssertMsg( uVectorType == SVM_EVENT_SOFTWARE_INT
|
---|
3152 | || (uVector == X86_XCPT_BP || uVector == X86_XCPT_OF),
|
---|
3153 | ("Invalid vector: uVector=%#x uVectorType=%#x\n", uVector, uVectorType));
|
---|
3154 | TRPMSetInstrLength(pVCpu, pVCpu->hm.s.Event.cbInstr);
|
---|
3155 | }
|
---|
3156 | pVCpu->hm.s.Event.fPending = false;
|
---|
3157 | }
|
---|
3158 |
|
---|
3159 |
|
---|
3160 | /**
|
---|
3161 | * Checks if the guest (or nested-guest) has an interrupt shadow active right
|
---|
3162 | * now.
|
---|
3163 | *
|
---|
3164 | * @returns @c true if the interrupt shadow is active, @c false otherwise.
|
---|
3165 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3166 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3167 | *
|
---|
3168 | * @remarks No-long-jump zone!!!
|
---|
3169 | * @remarks Has side-effects with VMCPU_FF_INHIBIT_INTERRUPTS force-flag.
|
---|
3170 | */
|
---|
3171 | DECLINLINE(bool) hmR0SvmIsIntrShadowActive(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
3172 | {
|
---|
3173 | /*
|
---|
3174 | * Instructions like STI and MOV SS inhibit interrupts till the next instruction completes. Check if we should
|
---|
3175 | * inhibit interrupts or clear any existing interrupt-inhibition.
|
---|
3176 | */
|
---|
3177 | if (VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS))
|
---|
3178 | {
|
---|
3179 | if (pCtx->rip != EMGetInhibitInterruptsPC(pVCpu))
|
---|
3180 | {
|
---|
3181 | /*
|
---|
3182 | * We can clear the inhibit force flag as even if we go back to the recompiler without executing guest code in
|
---|
3183 | * AMD-V, the flag's condition to be cleared is met and thus the cleared state is correct.
|
---|
3184 | */
|
---|
3185 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS);
|
---|
3186 | return false;
|
---|
3187 | }
|
---|
3188 | return true;
|
---|
3189 | }
|
---|
3190 | return false;
|
---|
3191 | }
|
---|
3192 |
|
---|
3193 |
|
---|
3194 | /**
|
---|
3195 | * Sets the virtual interrupt intercept control in the VMCB.
|
---|
3196 | *
|
---|
3197 | * @param pVmcb Pointer to the VM control block.
|
---|
3198 | */
|
---|
3199 | DECLINLINE(void) hmR0SvmSetVirtIntrIntercept(PSVMVMCB pVmcb)
|
---|
3200 | {
|
---|
3201 | /*
|
---|
3202 | * When AVIC isn't supported, indicate that a virtual interrupt is pending and to
|
---|
3203 | * cause a #VMEXIT when the guest is ready to accept interrupts. At #VMEXIT, we
|
---|
3204 | * then get the interrupt from the APIC (updating ISR at the right time) and
|
---|
3205 | * inject the interrupt.
|
---|
3206 | *
|
---|
3207 | * With AVIC is supported, we could make use of the asynchronously delivery without
|
---|
3208 | * #VMEXIT and we would be passing the AVIC page to SVM.
|
---|
3209 | */
|
---|
3210 | if (!(pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_VINTR))
|
---|
3211 | {
|
---|
3212 | Assert(pVmcb->ctrl.IntCtrl.n.u1VIrqPending == 0);
|
---|
3213 | pVmcb->ctrl.IntCtrl.n.u1VIrqPending = 1;
|
---|
3214 | pVmcb->ctrl.u64InterceptCtrl |= SVM_CTRL_INTERCEPT_VINTR;
|
---|
3215 | pVmcb->ctrl.u32VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS | HMSVM_VMCB_CLEAN_TPR);
|
---|
3216 | Log4(("Set VINTR intercept\n"));
|
---|
3217 | }
|
---|
3218 | }
|
---|
3219 |
|
---|
3220 |
|
---|
3221 | /**
|
---|
3222 | * Clears the virtual interrupt intercept control in the VMCB as
|
---|
3223 | * we are figured the guest is unable process any interrupts
|
---|
3224 | * at this point of time.
|
---|
3225 | *
|
---|
3226 | * @param pVmcb Pointer to the VM control block.
|
---|
3227 | */
|
---|
3228 | DECLINLINE(void) hmR0SvmClearVirtIntrIntercept(PSVMVMCB pVmcb)
|
---|
3229 | {
|
---|
3230 | if (pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_VINTR)
|
---|
3231 | {
|
---|
3232 | Assert(pVmcb->ctrl.IntCtrl.n.u1VIrqPending == 1);
|
---|
3233 | pVmcb->ctrl.IntCtrl.n.u1VIrqPending = 0;
|
---|
3234 | pVmcb->ctrl.u64InterceptCtrl &= ~SVM_CTRL_INTERCEPT_VINTR;
|
---|
3235 | pVmcb->ctrl.u32VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS | HMSVM_VMCB_CLEAN_TPR);
|
---|
3236 | Log4(("Cleared VINTR intercept\n"));
|
---|
3237 | }
|
---|
3238 | }
|
---|
3239 |
|
---|
3240 |
|
---|
3241 | /**
|
---|
3242 | * Sets the IRET intercept control in the VMCB which instructs AMD-V to cause a
|
---|
3243 | * \#VMEXIT as soon as a guest starts executing an IRET. This is used to unblock
|
---|
3244 | * virtual NMIs.
|
---|
3245 | *
|
---|
3246 | * @param pVmcb Pointer to the VM control block.
|
---|
3247 | */
|
---|
3248 | DECLINLINE(void) hmR0SvmSetIretIntercept(PSVMVMCB pVmcb)
|
---|
3249 | {
|
---|
3250 | if (!(pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_IRET))
|
---|
3251 | {
|
---|
3252 | pVmcb->ctrl.u64InterceptCtrl |= SVM_CTRL_INTERCEPT_IRET;
|
---|
3253 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
3254 |
|
---|
3255 | Log4(("Setting IRET intercept\n"));
|
---|
3256 | }
|
---|
3257 | }
|
---|
3258 |
|
---|
3259 |
|
---|
3260 | /**
|
---|
3261 | * Clears the IRET intercept control in the VMCB.
|
---|
3262 | *
|
---|
3263 | * @param pVmcb Pointer to the VM control block.
|
---|
3264 | */
|
---|
3265 | DECLINLINE(void) hmR0SvmClearIretIntercept(PSVMVMCB pVmcb)
|
---|
3266 | {
|
---|
3267 | if (pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_IRET)
|
---|
3268 | {
|
---|
3269 | pVmcb->ctrl.u64InterceptCtrl &= ~SVM_CTRL_INTERCEPT_IRET;
|
---|
3270 | pVmcb->ctrl.u32VmcbCleanBits &= ~(HMSVM_VMCB_CLEAN_INTERCEPTS);
|
---|
3271 |
|
---|
3272 | Log4(("Clearing IRET intercept\n"));
|
---|
3273 | }
|
---|
3274 | }
|
---|
3275 |
|
---|
3276 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
3277 |
|
---|
3278 |
|
---|
3279 | /**
|
---|
3280 | * Evaluates the event to be delivered to the nested-guest and sets it as the
|
---|
3281 | * pending event.
|
---|
3282 | *
|
---|
3283 | * @returns VBox strict status code.
|
---|
3284 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3285 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3286 | */
|
---|
3287 | static VBOXSTRICTRC hmR0SvmEvaluatePendingEventNested(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
3288 | {
|
---|
3289 | Log4Func(("\n"));
|
---|
3290 |
|
---|
3291 | Assert(!pVCpu->hm.s.Event.fPending);
|
---|
3292 |
|
---|
3293 | bool const fGif = pCtx->hwvirt.svm.fGif;
|
---|
3294 | if (fGif)
|
---|
3295 | {
|
---|
3296 | PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
|
---|
3297 |
|
---|
3298 | bool const fIntShadow = hmR0SvmIsIntrShadowActive(pVCpu, pCtx);
|
---|
3299 |
|
---|
3300 | /*
|
---|
3301 | * Check if the nested-guest can receive NMIs.
|
---|
3302 | * NMIs are higher priority than regular interrupts.
|
---|
3303 | */
|
---|
3304 | /** @todo SMI. SMIs take priority over NMIs. */
|
---|
3305 | if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI))
|
---|
3306 | {
|
---|
3307 | bool const fBlockNmi = VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
3308 | if (fBlockNmi)
|
---|
3309 | hmR0SvmSetIretIntercept(pVmcbNstGst);
|
---|
3310 | else if (fIntShadow)
|
---|
3311 | {
|
---|
3312 | /** @todo Figure this out, how we shall manage virt. intercept if the
|
---|
3313 | * nested-guest already has one set and/or if we really need it? */
|
---|
3314 | //hmR0SvmSetVirtIntrIntercept(pVmcbNstGst);
|
---|
3315 | }
|
---|
3316 | else
|
---|
3317 | {
|
---|
3318 | Log4(("Pending NMI\n"));
|
---|
3319 |
|
---|
3320 | SVMEVENT Event;
|
---|
3321 | Event.u = 0;
|
---|
3322 | Event.n.u1Valid = 1;
|
---|
3323 | Event.n.u8Vector = X86_XCPT_NMI;
|
---|
3324 | Event.n.u3Type = SVM_EVENT_NMI;
|
---|
3325 |
|
---|
3326 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3327 | hmR0SvmSetIretIntercept(pVmcbNstGst);
|
---|
3328 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
|
---|
3329 | return VINF_SUCCESS;
|
---|
3330 | }
|
---|
3331 | }
|
---|
3332 |
|
---|
3333 | /*
|
---|
3334 | * Check if the nested-guest can receive external interrupts (generated by
|
---|
3335 | * the guest's PIC/APIC).
|
---|
3336 | *
|
---|
3337 | * External intercepts, NMI, SMI etc. from the physical CPU are -always- intercepted
|
---|
3338 | * when executing using hardware-assisted SVM, see HMSVM_MANDATORY_GUEST_CTRL_INTERCEPTS.
|
---|
3339 | *
|
---|
3340 | * External interrupts that are generated for the outer guest may be intercepted
|
---|
3341 | * depending on how the nested-guest VMCB was programmed by guest software.
|
---|
3342 | *
|
---|
3343 | * Physical interrupts always take priority over virtual interrupts,
|
---|
3344 | * see AMD spec. 15.21.4 "Injecting Virtual (INTR) Interrupts".
|
---|
3345 | */
|
---|
3346 | PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = &pVCpu->hm.s.svm.NstGstVmcbCache;
|
---|
3347 | if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC)
|
---|
3348 | && !fIntShadow
|
---|
3349 | && !pVCpu->hm.s.fSingleInstruction
|
---|
3350 | && CPUMCanSvmNstGstTakePhysIntr(pVCpu, pCtx))
|
---|
3351 | {
|
---|
3352 | if (pVmcbNstGstCache->u64InterceptCtrl & SVM_CTRL_INTERCEPT_INTR)
|
---|
3353 | {
|
---|
3354 | Log4(("Intercepting external interrupt -> #VMEXIT\n"));
|
---|
3355 | return IEMExecSvmVmexit(pVCpu, SVM_EXIT_INTR, 0, 0);
|
---|
3356 | }
|
---|
3357 |
|
---|
3358 | uint8_t u8Interrupt;
|
---|
3359 | int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
|
---|
3360 | if (RT_SUCCESS(rc))
|
---|
3361 | {
|
---|
3362 | Log4(("Injecting external interrupt u8Interrupt=%#x\n", u8Interrupt));
|
---|
3363 |
|
---|
3364 | SVMEVENT Event;
|
---|
3365 | Event.u = 0;
|
---|
3366 | Event.n.u1Valid = 1;
|
---|
3367 | Event.n.u8Vector = u8Interrupt;
|
---|
3368 | Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
|
---|
3369 |
|
---|
3370 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3371 | }
|
---|
3372 | else if (rc == VERR_APIC_INTR_MASKED_BY_TPR)
|
---|
3373 | {
|
---|
3374 | /*
|
---|
3375 | * AMD-V has no TPR thresholding feature. TPR and the force-flag will be
|
---|
3376 | * updated eventually when the TPR is written by the guest.
|
---|
3377 | */
|
---|
3378 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
|
---|
3379 | }
|
---|
3380 | else
|
---|
3381 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
|
---|
3382 | }
|
---|
3383 |
|
---|
3384 | /*
|
---|
3385 | * Check if the nested-guest is intercepting virtual (using V_IRQ and related fields)
|
---|
3386 | * interrupt injection. The virtual interrupt injection itself, if any, will be done
|
---|
3387 | * by the physical CPU.
|
---|
3388 | */
|
---|
3389 | if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NESTED_GUEST)
|
---|
3390 | && (pVmcbNstGstCache->u64InterceptCtrl & SVM_CTRL_INTERCEPT_VINTR)
|
---|
3391 | && CPUMCanSvmNstGstTakeVirtIntr(pCtx))
|
---|
3392 | {
|
---|
3393 | Log4(("Intercepting virtual interrupt -> #VMEXIT\n"));
|
---|
3394 | return IEMExecSvmVmexit(pVCpu, SVM_EXIT_VINTR, 0, 0);
|
---|
3395 | }
|
---|
3396 | }
|
---|
3397 |
|
---|
3398 | return VINF_SUCCESS;
|
---|
3399 | }
|
---|
3400 | #endif
|
---|
3401 |
|
---|
3402 |
|
---|
3403 | /**
|
---|
3404 | * Evaluates the event to be delivered to the guest and sets it as the pending
|
---|
3405 | * event.
|
---|
3406 | *
|
---|
3407 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3408 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3409 | *
|
---|
3410 | * @remarks Don't use this function when we are actively executing a
|
---|
3411 | * nested-guest, use hmR0SvmEvaluatePendingEventNested instead.
|
---|
3412 | */
|
---|
3413 | static void hmR0SvmEvaluatePendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
3414 | {
|
---|
3415 | HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
|
---|
3416 | Assert(!pVCpu->hm.s.Event.fPending);
|
---|
3417 |
|
---|
3418 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
3419 | bool const fGif = pCtx->hwvirt.svm.fGif;
|
---|
3420 | #else
|
---|
3421 | bool const fGif = true;
|
---|
3422 | #endif
|
---|
3423 | Log4Func(("fGif=%RTbool\n", fGif));
|
---|
3424 |
|
---|
3425 | /*
|
---|
3426 | * If the global interrupt flag (GIF) isn't set, even NMIs and other events are blocked.
|
---|
3427 | * See AMD spec. Table 15-10. "Effect of the GIF on Interrupt Handling".
|
---|
3428 | */
|
---|
3429 | if (fGif)
|
---|
3430 | {
|
---|
3431 | bool const fIntShadow = hmR0SvmIsIntrShadowActive(pVCpu, pCtx);
|
---|
3432 | bool const fBlockInt = !(pCtx->eflags.u32 & X86_EFL_IF);
|
---|
3433 | bool const fBlockNmi = VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
3434 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
3435 |
|
---|
3436 | Log4Func(("fGif=%RTbool fBlockInt=%RTbool fIntShadow=%RTbool APIC/PIC_Pending=%RTbool\n", fGif, fBlockInt, fIntShadow,
|
---|
3437 | VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC)));
|
---|
3438 |
|
---|
3439 | /** @todo SMI. SMIs take priority over NMIs. */
|
---|
3440 | if (VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_NMI)) /* NMI. NMIs take priority over regular interrupts. */
|
---|
3441 | {
|
---|
3442 | if (fBlockNmi)
|
---|
3443 | hmR0SvmSetIretIntercept(pVmcb);
|
---|
3444 | else if (fIntShadow)
|
---|
3445 | hmR0SvmSetVirtIntrIntercept(pVmcb);
|
---|
3446 | else
|
---|
3447 | {
|
---|
3448 | Log4(("Pending NMI\n"));
|
---|
3449 |
|
---|
3450 | SVMEVENT Event;
|
---|
3451 | Event.u = 0;
|
---|
3452 | Event.n.u1Valid = 1;
|
---|
3453 | Event.n.u8Vector = X86_XCPT_NMI;
|
---|
3454 | Event.n.u3Type = SVM_EVENT_NMI;
|
---|
3455 |
|
---|
3456 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3457 | hmR0SvmSetIretIntercept(pVmcb);
|
---|
3458 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_INTERRUPT_NMI);
|
---|
3459 | return;
|
---|
3460 | }
|
---|
3461 | }
|
---|
3462 | else if ( VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_INTERRUPT_APIC | VMCPU_FF_INTERRUPT_PIC)
|
---|
3463 | && !pVCpu->hm.s.fSingleInstruction)
|
---|
3464 | {
|
---|
3465 | /*
|
---|
3466 | * Check if the guest can receive external interrupts (PIC/APIC). Once PDMGetInterrupt() returns
|
---|
3467 | * a valid interrupt we -must- deliver the interrupt. We can no longer re-request it from the APIC.
|
---|
3468 | */
|
---|
3469 | if ( !fBlockInt
|
---|
3470 | && !fIntShadow)
|
---|
3471 | {
|
---|
3472 | uint8_t u8Interrupt;
|
---|
3473 | int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
|
---|
3474 | if (RT_SUCCESS(rc))
|
---|
3475 | {
|
---|
3476 | Log4(("Injecting external interrupt u8Interrupt=%#x\n", u8Interrupt));
|
---|
3477 |
|
---|
3478 | SVMEVENT Event;
|
---|
3479 | Event.u = 0;
|
---|
3480 | Event.n.u1Valid = 1;
|
---|
3481 | Event.n.u8Vector = u8Interrupt;
|
---|
3482 | Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
|
---|
3483 |
|
---|
3484 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
3485 | }
|
---|
3486 | else if (rc == VERR_APIC_INTR_MASKED_BY_TPR)
|
---|
3487 | {
|
---|
3488 | /*
|
---|
3489 | * AMD-V has no TPR thresholding feature. TPR and the force-flag will be
|
---|
3490 | * updated eventually when the TPR is written by the guest.
|
---|
3491 | */
|
---|
3492 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchTprMaskedIrq);
|
---|
3493 | }
|
---|
3494 | else
|
---|
3495 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchGuestIrq);
|
---|
3496 | }
|
---|
3497 | else
|
---|
3498 | hmR0SvmSetVirtIntrIntercept(pVmcb);
|
---|
3499 | }
|
---|
3500 | }
|
---|
3501 | }
|
---|
3502 |
|
---|
3503 |
|
---|
3504 | /**
|
---|
3505 | * Injects any pending events into the guest or nested-guest.
|
---|
3506 | *
|
---|
3507 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3508 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3509 | * @param pVmcb Pointer to the VM control block.
|
---|
3510 | */
|
---|
3511 | static void hmR0SvmInjectPendingEvent(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMVMCB pVmcb)
|
---|
3512 | {
|
---|
3513 | Assert(!TRPMHasTrap(pVCpu));
|
---|
3514 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
3515 |
|
---|
3516 | bool const fIsNestedGuest = CPUMIsGuestInSvmNestedHwVirtMode(pCtx);
|
---|
3517 | bool const fIntShadow = hmR0SvmIsIntrShadowActive(pVCpu, pCtx);
|
---|
3518 | bool const fBlockInt = !fIsNestedGuest ? !(pCtx->eflags.u32 & X86_EFL_IF) : CPUMCanSvmNstGstTakePhysIntr(pVCpu, pCtx);
|
---|
3519 |
|
---|
3520 | if (pVCpu->hm.s.Event.fPending)
|
---|
3521 | {
|
---|
3522 | SVMEVENT Event;
|
---|
3523 | Event.u = pVCpu->hm.s.Event.u64IntInfo;
|
---|
3524 | Assert(Event.n.u1Valid);
|
---|
3525 |
|
---|
3526 | /*
|
---|
3527 | * Validate event injection pre-conditions.
|
---|
3528 | */
|
---|
3529 | if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
|
---|
3530 | {
|
---|
3531 | Assert(!fBlockInt);
|
---|
3532 | Assert(!fIntShadow);
|
---|
3533 | }
|
---|
3534 | else if (Event.n.u3Type == SVM_EVENT_NMI)
|
---|
3535 | Assert(!fIntShadow);
|
---|
3536 | NOREF(fBlockInt);
|
---|
3537 |
|
---|
3538 | /*
|
---|
3539 | * Inject it (update VMCB for injection by the hardware).
|
---|
3540 | */
|
---|
3541 | Log4(("Injecting pending HM event\n"));
|
---|
3542 | hmR0SvmInjectEventVmcb(pVCpu, pVmcb, pCtx, &Event);
|
---|
3543 | pVCpu->hm.s.Event.fPending = false;
|
---|
3544 |
|
---|
3545 | if (Event.n.u3Type == SVM_EVENT_EXTERNAL_IRQ)
|
---|
3546 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectInterrupt);
|
---|
3547 | else
|
---|
3548 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectXcpt);
|
---|
3549 | }
|
---|
3550 | else
|
---|
3551 | {
|
---|
3552 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
3553 | /*
|
---|
3554 | * If IEM emulated VMRUN and injected an event, it would not clear the EVENTINJ::Valid bit
|
---|
3555 | * as a physical CPU clears it in the VMCB as part of the #VMEXIT (if the AMD spec. is to
|
---|
3556 | * believed, real behavior might differ). Regardless, IEM does it only on #VMEXIT for now
|
---|
3557 | * and since we are continuing nested-guest execution using hardware-assisted SVM, we need
|
---|
3558 | * to clear this field otherwise we will inject the event twice, see @bugref{7243#78}.
|
---|
3559 | */
|
---|
3560 | if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
3561 | pVmcb->ctrl.EventInject.n.u1Valid = 0;
|
---|
3562 | #endif
|
---|
3563 | Assert(pVmcb->ctrl.EventInject.n.u1Valid == 0);
|
---|
3564 | }
|
---|
3565 |
|
---|
3566 | /*
|
---|
3567 | * Update the guest interrupt shadow in the guest or nested-guest VMCB.
|
---|
3568 | *
|
---|
3569 | * For nested-guests: We need to update it too for the scenario where IEM executes
|
---|
3570 | * the nested-guest but execution later continues here with an interrupt shadow active.
|
---|
3571 | */
|
---|
3572 | pVmcb->ctrl.IntShadow.n.u1IntShadow = fIntShadow;
|
---|
3573 | }
|
---|
3574 |
|
---|
3575 |
|
---|
3576 | /**
|
---|
3577 | * Reports world-switch error and dumps some useful debug info.
|
---|
3578 | *
|
---|
3579 | * @param pVM The cross context VM structure.
|
---|
3580 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3581 | * @param rcVMRun The return code from VMRUN (or
|
---|
3582 | * VERR_SVM_INVALID_GUEST_STATE for invalid
|
---|
3583 | * guest-state).
|
---|
3584 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3585 | */
|
---|
3586 | static void hmR0SvmReportWorldSwitchError(PVM pVM, PVMCPU pVCpu, int rcVMRun, PCPUMCTX pCtx)
|
---|
3587 | {
|
---|
3588 | NOREF(pCtx);
|
---|
3589 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
3590 | HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
|
---|
3591 | PCSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
3592 |
|
---|
3593 | if (rcVMRun == VERR_SVM_INVALID_GUEST_STATE)
|
---|
3594 | {
|
---|
3595 | hmR0DumpRegs(pVM, pVCpu, pCtx); NOREF(pVM);
|
---|
3596 | #ifdef VBOX_STRICT
|
---|
3597 | Log4(("ctrl.u32VmcbCleanBits %#RX32\n", pVmcb->ctrl.u32VmcbCleanBits));
|
---|
3598 | Log4(("ctrl.u16InterceptRdCRx %#x\n", pVmcb->ctrl.u16InterceptRdCRx));
|
---|
3599 | Log4(("ctrl.u16InterceptWrCRx %#x\n", pVmcb->ctrl.u16InterceptWrCRx));
|
---|
3600 | Log4(("ctrl.u16InterceptRdDRx %#x\n", pVmcb->ctrl.u16InterceptRdDRx));
|
---|
3601 | Log4(("ctrl.u16InterceptWrDRx %#x\n", pVmcb->ctrl.u16InterceptWrDRx));
|
---|
3602 | Log4(("ctrl.u32InterceptXcpt %#x\n", pVmcb->ctrl.u32InterceptXcpt));
|
---|
3603 | Log4(("ctrl.u64InterceptCtrl %#RX64\n", pVmcb->ctrl.u64InterceptCtrl));
|
---|
3604 | Log4(("ctrl.u64IOPMPhysAddr %#RX64\n", pVmcb->ctrl.u64IOPMPhysAddr));
|
---|
3605 | Log4(("ctrl.u64MSRPMPhysAddr %#RX64\n", pVmcb->ctrl.u64MSRPMPhysAddr));
|
---|
3606 | Log4(("ctrl.u64TSCOffset %#RX64\n", pVmcb->ctrl.u64TSCOffset));
|
---|
3607 |
|
---|
3608 | Log4(("ctrl.TLBCtrl.u32ASID %#x\n", pVmcb->ctrl.TLBCtrl.n.u32ASID));
|
---|
3609 | Log4(("ctrl.TLBCtrl.u8TLBFlush %#x\n", pVmcb->ctrl.TLBCtrl.n.u8TLBFlush));
|
---|
3610 | Log4(("ctrl.TLBCtrl.u24Reserved %#x\n", pVmcb->ctrl.TLBCtrl.n.u24Reserved));
|
---|
3611 |
|
---|
3612 | Log4(("ctrl.IntCtrl.u8VTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u8VTPR));
|
---|
3613 | Log4(("ctrl.IntCtrl.u1VIrqPending %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIrqPending));
|
---|
3614 | Log4(("ctrl.IntCtrl.u1VGif %#x\n", pVmcb->ctrl.IntCtrl.n.u1VGif));
|
---|
3615 | Log4(("ctrl.IntCtrl.u6Reserved0 %#x\n", pVmcb->ctrl.IntCtrl.n.u6Reserved0));
|
---|
3616 | Log4(("ctrl.IntCtrl.u4VIntrPrio %#x\n", pVmcb->ctrl.IntCtrl.n.u4VIntrPrio));
|
---|
3617 | Log4(("ctrl.IntCtrl.u1IgnoreTPR %#x\n", pVmcb->ctrl.IntCtrl.n.u1IgnoreTPR));
|
---|
3618 | Log4(("ctrl.IntCtrl.u3Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u3Reserved));
|
---|
3619 | Log4(("ctrl.IntCtrl.u1VIntrMasking %#x\n", pVmcb->ctrl.IntCtrl.n.u1VIntrMasking));
|
---|
3620 | Log4(("ctrl.IntCtrl.u6Reserved1 %#x\n", pVmcb->ctrl.IntCtrl.n.u6Reserved1));
|
---|
3621 | Log4(("ctrl.IntCtrl.u8VIntrVector %#x\n", pVmcb->ctrl.IntCtrl.n.u8VIntrVector));
|
---|
3622 | Log4(("ctrl.IntCtrl.u24Reserved %#x\n", pVmcb->ctrl.IntCtrl.n.u24Reserved));
|
---|
3623 |
|
---|
3624 | Log4(("ctrl.IntShadow.u1IntShadow %#x\n", pVmcb->ctrl.IntShadow.n.u1IntShadow));
|
---|
3625 | Log4(("ctrl.IntShadow.u1GuestIntMask %#x\n", pVmcb->ctrl.IntShadow.n.u1GuestIntMask));
|
---|
3626 | Log4(("ctrl.u64ExitCode %#RX64\n", pVmcb->ctrl.u64ExitCode));
|
---|
3627 | Log4(("ctrl.u64ExitInfo1 %#RX64\n", pVmcb->ctrl.u64ExitInfo1));
|
---|
3628 | Log4(("ctrl.u64ExitInfo2 %#RX64\n", pVmcb->ctrl.u64ExitInfo2));
|
---|
3629 | Log4(("ctrl.ExitIntInfo.u8Vector %#x\n", pVmcb->ctrl.ExitIntInfo.n.u8Vector));
|
---|
3630 | Log4(("ctrl.ExitIntInfo.u3Type %#x\n", pVmcb->ctrl.ExitIntInfo.n.u3Type));
|
---|
3631 | Log4(("ctrl.ExitIntInfo.u1ErrorCodeValid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
|
---|
3632 | Log4(("ctrl.ExitIntInfo.u19Reserved %#x\n", pVmcb->ctrl.ExitIntInfo.n.u19Reserved));
|
---|
3633 | Log4(("ctrl.ExitIntInfo.u1Valid %#x\n", pVmcb->ctrl.ExitIntInfo.n.u1Valid));
|
---|
3634 | Log4(("ctrl.ExitIntInfo.u32ErrorCode %#x\n", pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
|
---|
3635 | Log4(("ctrl.NestedPaging.u1NestedPaging %#x\n", pVmcb->ctrl.NestedPaging.n.u1NestedPaging));
|
---|
3636 | Log4(("ctrl.NestedPaging.u1Sev %#x\n", pVmcb->ctrl.NestedPaging.n.u1Sev));
|
---|
3637 | Log4(("ctrl.NestedPaging.u1SevEs %#x\n", pVmcb->ctrl.NestedPaging.n.u1SevEs));
|
---|
3638 | Log4(("ctrl.EventInject.u8Vector %#x\n", pVmcb->ctrl.EventInject.n.u8Vector));
|
---|
3639 | Log4(("ctrl.EventInject.u3Type %#x\n", pVmcb->ctrl.EventInject.n.u3Type));
|
---|
3640 | Log4(("ctrl.EventInject.u1ErrorCodeValid %#x\n", pVmcb->ctrl.EventInject.n.u1ErrorCodeValid));
|
---|
3641 | Log4(("ctrl.EventInject.u19Reserved %#x\n", pVmcb->ctrl.EventInject.n.u19Reserved));
|
---|
3642 | Log4(("ctrl.EventInject.u1Valid %#x\n", pVmcb->ctrl.EventInject.n.u1Valid));
|
---|
3643 | Log4(("ctrl.EventInject.u32ErrorCode %#x\n", pVmcb->ctrl.EventInject.n.u32ErrorCode));
|
---|
3644 |
|
---|
3645 | Log4(("ctrl.u64NestedPagingCR3 %#RX64\n", pVmcb->ctrl.u64NestedPagingCR3));
|
---|
3646 |
|
---|
3647 | Log4(("ctrl.LbrVirt.u1LbrVirt %#x\n", pVmcb->ctrl.LbrVirt.n.u1LbrVirt));
|
---|
3648 | Log4(("ctrl.LbrVirt.u1VirtVmsaveVmload %#x\n", pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload));
|
---|
3649 |
|
---|
3650 | Log4(("guest.CS.u16Sel %RTsel\n", pVmcb->guest.CS.u16Sel));
|
---|
3651 | Log4(("guest.CS.u16Attr %#x\n", pVmcb->guest.CS.u16Attr));
|
---|
3652 | Log4(("guest.CS.u32Limit %#RX32\n", pVmcb->guest.CS.u32Limit));
|
---|
3653 | Log4(("guest.CS.u64Base %#RX64\n", pVmcb->guest.CS.u64Base));
|
---|
3654 | Log4(("guest.DS.u16Sel %#RTsel\n", pVmcb->guest.DS.u16Sel));
|
---|
3655 | Log4(("guest.DS.u16Attr %#x\n", pVmcb->guest.DS.u16Attr));
|
---|
3656 | Log4(("guest.DS.u32Limit %#RX32\n", pVmcb->guest.DS.u32Limit));
|
---|
3657 | Log4(("guest.DS.u64Base %#RX64\n", pVmcb->guest.DS.u64Base));
|
---|
3658 | Log4(("guest.ES.u16Sel %RTsel\n", pVmcb->guest.ES.u16Sel));
|
---|
3659 | Log4(("guest.ES.u16Attr %#x\n", pVmcb->guest.ES.u16Attr));
|
---|
3660 | Log4(("guest.ES.u32Limit %#RX32\n", pVmcb->guest.ES.u32Limit));
|
---|
3661 | Log4(("guest.ES.u64Base %#RX64\n", pVmcb->guest.ES.u64Base));
|
---|
3662 | Log4(("guest.FS.u16Sel %RTsel\n", pVmcb->guest.FS.u16Sel));
|
---|
3663 | Log4(("guest.FS.u16Attr %#x\n", pVmcb->guest.FS.u16Attr));
|
---|
3664 | Log4(("guest.FS.u32Limit %#RX32\n", pVmcb->guest.FS.u32Limit));
|
---|
3665 | Log4(("guest.FS.u64Base %#RX64\n", pVmcb->guest.FS.u64Base));
|
---|
3666 | Log4(("guest.GS.u16Sel %RTsel\n", pVmcb->guest.GS.u16Sel));
|
---|
3667 | Log4(("guest.GS.u16Attr %#x\n", pVmcb->guest.GS.u16Attr));
|
---|
3668 | Log4(("guest.GS.u32Limit %#RX32\n", pVmcb->guest.GS.u32Limit));
|
---|
3669 | Log4(("guest.GS.u64Base %#RX64\n", pVmcb->guest.GS.u64Base));
|
---|
3670 |
|
---|
3671 | Log4(("guest.GDTR.u32Limit %#RX32\n", pVmcb->guest.GDTR.u32Limit));
|
---|
3672 | Log4(("guest.GDTR.u64Base %#RX64\n", pVmcb->guest.GDTR.u64Base));
|
---|
3673 |
|
---|
3674 | Log4(("guest.LDTR.u16Sel %RTsel\n", pVmcb->guest.LDTR.u16Sel));
|
---|
3675 | Log4(("guest.LDTR.u16Attr %#x\n", pVmcb->guest.LDTR.u16Attr));
|
---|
3676 | Log4(("guest.LDTR.u32Limit %#RX32\n", pVmcb->guest.LDTR.u32Limit));
|
---|
3677 | Log4(("guest.LDTR.u64Base %#RX64\n", pVmcb->guest.LDTR.u64Base));
|
---|
3678 |
|
---|
3679 | Log4(("guest.IDTR.u32Limit %#RX32\n", pVmcb->guest.IDTR.u32Limit));
|
---|
3680 | Log4(("guest.IDTR.u64Base %#RX64\n", pVmcb->guest.IDTR.u64Base));
|
---|
3681 |
|
---|
3682 | Log4(("guest.TR.u16Sel %RTsel\n", pVmcb->guest.TR.u16Sel));
|
---|
3683 | Log4(("guest.TR.u16Attr %#x\n", pVmcb->guest.TR.u16Attr));
|
---|
3684 | Log4(("guest.TR.u32Limit %#RX32\n", pVmcb->guest.TR.u32Limit));
|
---|
3685 | Log4(("guest.TR.u64Base %#RX64\n", pVmcb->guest.TR.u64Base));
|
---|
3686 |
|
---|
3687 | Log4(("guest.u8CPL %#x\n", pVmcb->guest.u8CPL));
|
---|
3688 | Log4(("guest.u64CR0 %#RX64\n", pVmcb->guest.u64CR0));
|
---|
3689 | Log4(("guest.u64CR2 %#RX64\n", pVmcb->guest.u64CR2));
|
---|
3690 | Log4(("guest.u64CR3 %#RX64\n", pVmcb->guest.u64CR3));
|
---|
3691 | Log4(("guest.u64CR4 %#RX64\n", pVmcb->guest.u64CR4));
|
---|
3692 | Log4(("guest.u64DR6 %#RX64\n", pVmcb->guest.u64DR6));
|
---|
3693 | Log4(("guest.u64DR7 %#RX64\n", pVmcb->guest.u64DR7));
|
---|
3694 |
|
---|
3695 | Log4(("guest.u64RIP %#RX64\n", pVmcb->guest.u64RIP));
|
---|
3696 | Log4(("guest.u64RSP %#RX64\n", pVmcb->guest.u64RSP));
|
---|
3697 | Log4(("guest.u64RAX %#RX64\n", pVmcb->guest.u64RAX));
|
---|
3698 | Log4(("guest.u64RFlags %#RX64\n", pVmcb->guest.u64RFlags));
|
---|
3699 |
|
---|
3700 | Log4(("guest.u64SysEnterCS %#RX64\n", pVmcb->guest.u64SysEnterCS));
|
---|
3701 | Log4(("guest.u64SysEnterEIP %#RX64\n", pVmcb->guest.u64SysEnterEIP));
|
---|
3702 | Log4(("guest.u64SysEnterESP %#RX64\n", pVmcb->guest.u64SysEnterESP));
|
---|
3703 |
|
---|
3704 | Log4(("guest.u64EFER %#RX64\n", pVmcb->guest.u64EFER));
|
---|
3705 | Log4(("guest.u64STAR %#RX64\n", pVmcb->guest.u64STAR));
|
---|
3706 | Log4(("guest.u64LSTAR %#RX64\n", pVmcb->guest.u64LSTAR));
|
---|
3707 | Log4(("guest.u64CSTAR %#RX64\n", pVmcb->guest.u64CSTAR));
|
---|
3708 | Log4(("guest.u64SFMASK %#RX64\n", pVmcb->guest.u64SFMASK));
|
---|
3709 | Log4(("guest.u64KernelGSBase %#RX64\n", pVmcb->guest.u64KernelGSBase));
|
---|
3710 | Log4(("guest.u64GPAT %#RX64\n", pVmcb->guest.u64GPAT));
|
---|
3711 | Log4(("guest.u64DBGCTL %#RX64\n", pVmcb->guest.u64DBGCTL));
|
---|
3712 | Log4(("guest.u64BR_FROM %#RX64\n", pVmcb->guest.u64BR_FROM));
|
---|
3713 | Log4(("guest.u64BR_TO %#RX64\n", pVmcb->guest.u64BR_TO));
|
---|
3714 | Log4(("guest.u64LASTEXCPFROM %#RX64\n", pVmcb->guest.u64LASTEXCPFROM));
|
---|
3715 | Log4(("guest.u64LASTEXCPTO %#RX64\n", pVmcb->guest.u64LASTEXCPTO));
|
---|
3716 | #endif /* VBOX_STRICT */
|
---|
3717 | }
|
---|
3718 | else
|
---|
3719 | Log4(("hmR0SvmReportWorldSwitchError: rcVMRun=%d\n", rcVMRun));
|
---|
3720 |
|
---|
3721 | NOREF(pVmcb);
|
---|
3722 | }
|
---|
3723 |
|
---|
3724 |
|
---|
3725 | /**
|
---|
3726 | * Check per-VM and per-VCPU force flag actions that require us to go back to
|
---|
3727 | * ring-3 for one reason or another.
|
---|
3728 | *
|
---|
3729 | * @returns VBox status code (information status code included).
|
---|
3730 | * @retval VINF_SUCCESS if we don't have any actions that require going back to
|
---|
3731 | * ring-3.
|
---|
3732 | * @retval VINF_PGM_SYNC_CR3 if we have pending PGM CR3 sync.
|
---|
3733 | * @retval VINF_EM_PENDING_REQUEST if we have pending requests (like hardware
|
---|
3734 | * interrupts)
|
---|
3735 | * @retval VINF_PGM_POOL_FLUSH_PENDING if PGM is doing a pool flush and requires
|
---|
3736 | * all EMTs to be in ring-3.
|
---|
3737 | * @retval VINF_EM_RAW_TO_R3 if there is pending DMA requests.
|
---|
3738 | * @retval VINF_EM_NO_MEMORY PGM is out of memory, we need to return
|
---|
3739 | * to the EM loop.
|
---|
3740 | *
|
---|
3741 | * @param pVM The cross context VM structure.
|
---|
3742 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3743 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3744 | */
|
---|
3745 | static int hmR0SvmCheckForceFlags(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
3746 | {
|
---|
3747 | Assert(VMMRZCallRing3IsEnabled(pVCpu));
|
---|
3748 |
|
---|
3749 | /* On AMD-V we don't need to update CR3, PAE PDPES lazily. See hmR0SvmSaveGuestState(). */
|
---|
3750 | Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_CR3));
|
---|
3751 | Assert(!VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_UPDATE_PAE_PDPES));
|
---|
3752 |
|
---|
3753 | /* Update pending interrupts into the APIC's IRR. */
|
---|
3754 | if (VMCPU_FF_TEST_AND_CLEAR(pVCpu, VMCPU_FF_UPDATE_APIC))
|
---|
3755 | APICUpdatePendingInterrupts(pVCpu);
|
---|
3756 |
|
---|
3757 | if ( VM_FF_IS_PENDING(pVM, !pVCpu->hm.s.fSingleInstruction
|
---|
3758 | ? VM_FF_HP_R0_PRE_HM_MASK : VM_FF_HP_R0_PRE_HM_STEP_MASK)
|
---|
3759 | || VMCPU_FF_IS_PENDING(pVCpu, !pVCpu->hm.s.fSingleInstruction
|
---|
3760 | ? VMCPU_FF_HP_R0_PRE_HM_MASK : VMCPU_FF_HP_R0_PRE_HM_STEP_MASK) )
|
---|
3761 | {
|
---|
3762 | /* Pending PGM C3 sync. */
|
---|
3763 | if (VMCPU_FF_IS_PENDING(pVCpu,VMCPU_FF_PGM_SYNC_CR3 | VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL))
|
---|
3764 | {
|
---|
3765 | int rc = PGMSyncCR3(pVCpu, pCtx->cr0, pCtx->cr3, pCtx->cr4, VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_PGM_SYNC_CR3));
|
---|
3766 | if (rc != VINF_SUCCESS)
|
---|
3767 | {
|
---|
3768 | Log4(("hmR0SvmCheckForceFlags: PGMSyncCR3 forcing us back to ring-3. rc=%d\n", rc));
|
---|
3769 | return rc;
|
---|
3770 | }
|
---|
3771 | }
|
---|
3772 |
|
---|
3773 | /* Pending HM-to-R3 operations (critsects, timers, EMT rendezvous etc.) */
|
---|
3774 | /* -XXX- what was that about single stepping? */
|
---|
3775 | if ( VM_FF_IS_PENDING(pVM, VM_FF_HM_TO_R3_MASK)
|
---|
3776 | || VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
|
---|
3777 | {
|
---|
3778 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
|
---|
3779 | int rc = RT_UNLIKELY(VM_FF_IS_PENDING(pVM, VM_FF_PGM_NO_MEMORY)) ? VINF_EM_NO_MEMORY : VINF_EM_RAW_TO_R3;
|
---|
3780 | Log4(("hmR0SvmCheckForceFlags: HM_TO_R3 forcing us back to ring-3. rc=%d\n", rc));
|
---|
3781 | return rc;
|
---|
3782 | }
|
---|
3783 |
|
---|
3784 | /* Pending VM request packets, such as hardware interrupts. */
|
---|
3785 | if ( VM_FF_IS_PENDING(pVM, VM_FF_REQUEST)
|
---|
3786 | || VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_REQUEST))
|
---|
3787 | {
|
---|
3788 | Log4(("hmR0SvmCheckForceFlags: Pending VM request forcing us back to ring-3\n"));
|
---|
3789 | return VINF_EM_PENDING_REQUEST;
|
---|
3790 | }
|
---|
3791 |
|
---|
3792 | /* Pending PGM pool flushes. */
|
---|
3793 | if (VM_FF_IS_PENDING(pVM, VM_FF_PGM_POOL_FLUSH_PENDING))
|
---|
3794 | {
|
---|
3795 | Log4(("hmR0SvmCheckForceFlags: PGM pool flush pending forcing us back to ring-3\n"));
|
---|
3796 | return VINF_PGM_POOL_FLUSH_PENDING;
|
---|
3797 | }
|
---|
3798 |
|
---|
3799 | /* Pending DMA requests. */
|
---|
3800 | if (VM_FF_IS_PENDING(pVM, VM_FF_PDM_DMA))
|
---|
3801 | {
|
---|
3802 | Log4(("hmR0SvmCheckForceFlags: Pending DMA request forcing us back to ring-3\n"));
|
---|
3803 | return VINF_EM_RAW_TO_R3;
|
---|
3804 | }
|
---|
3805 | }
|
---|
3806 |
|
---|
3807 | return VINF_SUCCESS;
|
---|
3808 | }
|
---|
3809 |
|
---|
3810 |
|
---|
3811 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
3812 | /**
|
---|
3813 | * Does the preparations before executing nested-guest code in AMD-V.
|
---|
3814 | *
|
---|
3815 | * @returns VBox status code (informational status codes included).
|
---|
3816 | * @retval VINF_SUCCESS if we can proceed with running the guest.
|
---|
3817 | * @retval VINF_* scheduling changes, we have to go back to ring-3.
|
---|
3818 | *
|
---|
3819 | * @param pVM The cross context VM structure.
|
---|
3820 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3821 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3822 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
3823 | *
|
---|
3824 | * @remarks Same caveats regarding longjumps as hmR0SvmPreRunGuest applies.
|
---|
3825 | * @sa hmR0SvmPreRunGuest.
|
---|
3826 | */
|
---|
3827 | static int hmR0SvmPreRunGuestNested(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
3828 | {
|
---|
3829 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
3830 |
|
---|
3831 | if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
3832 | {
|
---|
3833 | #ifdef VBOX_WITH_NESTED_HWVIRT_ONLY_IN_IEM
|
---|
3834 | Log2(("hmR0SvmPreRunGuest: Rescheduling to IEM due to nested-hwvirt or forced IEM exec -> VINF_EM_RESCHEDULE_REM\n"));
|
---|
3835 | return VINF_EM_RESCHEDULE_REM;
|
---|
3836 | #endif
|
---|
3837 | }
|
---|
3838 | else
|
---|
3839 | return VINF_SVM_VMEXIT;
|
---|
3840 |
|
---|
3841 | /* Check force flag actions that might require us to go back to ring-3. */
|
---|
3842 | int rc = hmR0SvmCheckForceFlags(pVM, pVCpu, pCtx);
|
---|
3843 | if (rc != VINF_SUCCESS)
|
---|
3844 | return rc;
|
---|
3845 |
|
---|
3846 | if (TRPMHasTrap(pVCpu))
|
---|
3847 | hmR0SvmTrpmTrapToPendingEvent(pVCpu);
|
---|
3848 | else if (!pVCpu->hm.s.Event.fPending)
|
---|
3849 | {
|
---|
3850 | VBOXSTRICTRC rcStrict = hmR0SvmEvaluatePendingEventNested(pVCpu, pCtx);
|
---|
3851 | if (rcStrict != VINF_SUCCESS)
|
---|
3852 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
3853 | }
|
---|
3854 |
|
---|
3855 | /*
|
---|
3856 | * On the oldest AMD-V systems, we may not get enough information to reinject an NMI.
|
---|
3857 | * Just do it in software, see @bugref{8411}.
|
---|
3858 | * NB: If we could continue a task switch exit we wouldn't need to do this.
|
---|
3859 | */
|
---|
3860 | if (RT_UNLIKELY( !pVM->hm.s.svm.u32Features
|
---|
3861 | && pVCpu->hm.s.Event.fPending
|
---|
3862 | && SVM_EVENT_GET_TYPE(pVCpu->hm.s.Event.u64IntInfo) == SVM_EVENT_NMI))
|
---|
3863 | {
|
---|
3864 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
3865 | }
|
---|
3866 |
|
---|
3867 | /*
|
---|
3868 | * Load the nested-guest state.
|
---|
3869 | */
|
---|
3870 | rc = hmR0SvmLoadGuestStateNested(pVCpu, pCtx);
|
---|
3871 | AssertRCReturn(rc, rc);
|
---|
3872 | STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadFull); /** @todo Get new STAM counter for this? */
|
---|
3873 |
|
---|
3874 | /* Ensure we've cached (and hopefully modified) the VMCB for execution using hardware SVM. */
|
---|
3875 | Assert(pCtx->hwvirt.svm.fHMCachedVmcb);
|
---|
3876 |
|
---|
3877 | /*
|
---|
3878 | * No longjmps to ring-3 from this point on!!!
|
---|
3879 | * Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
|
---|
3880 | * This also disables flushing of the R0-logger instance (if any).
|
---|
3881 | */
|
---|
3882 | VMMRZCallRing3Disable(pVCpu);
|
---|
3883 |
|
---|
3884 | /*
|
---|
3885 | * We disable interrupts so that we don't miss any interrupts that would flag preemption (IPI/timers etc.)
|
---|
3886 | * when thread-context hooks aren't used and we've been running with preemption disabled for a while.
|
---|
3887 | *
|
---|
3888 | * We need to check for force-flags that could've possible been altered since we last checked them (e.g.
|
---|
3889 | * by PDMGetInterrupt() leaving the PDM critical section, see @bugref{6398}).
|
---|
3890 | *
|
---|
3891 | * We also check a couple of other force-flags as a last opportunity to get the EMT back to ring-3 before
|
---|
3892 | * executing guest code.
|
---|
3893 | */
|
---|
3894 | pSvmTransient->fEFlags = ASMIntDisableFlags();
|
---|
3895 | if ( VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS | VM_FF_TM_VIRTUAL_SYNC)
|
---|
3896 | || VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
|
---|
3897 | {
|
---|
3898 | ASMSetFlags(pSvmTransient->fEFlags);
|
---|
3899 | VMMRZCallRing3Enable(pVCpu);
|
---|
3900 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
|
---|
3901 | return VINF_EM_RAW_TO_R3;
|
---|
3902 | }
|
---|
3903 | if (RTThreadPreemptIsPending(NIL_RTTHREAD))
|
---|
3904 | {
|
---|
3905 | ASMSetFlags(pSvmTransient->fEFlags);
|
---|
3906 | VMMRZCallRing3Enable(pVCpu);
|
---|
3907 | STAM_COUNTER_INC(&pVCpu->hm.s.StatPendingHostIrq);
|
---|
3908 | return VINF_EM_RAW_INTERRUPT;
|
---|
3909 | }
|
---|
3910 |
|
---|
3911 | /*
|
---|
3912 | * If we are injecting an NMI, we must set VMCPU_FF_BLOCK_NMIS only when we are going to execute
|
---|
3913 | * guest code for certain (no exits to ring-3). Otherwise, we could re-read the flag on re-entry into
|
---|
3914 | * AMD-V and conclude that NMI inhibition is active when we have not even delivered the NMI.
|
---|
3915 | *
|
---|
3916 | * With VT-x, this is handled by the Guest interruptibility information VMCS field which will set the
|
---|
3917 | * VMCS field after actually delivering the NMI which we read on VM-exit to determine the state.
|
---|
3918 | */
|
---|
3919 | if (pVCpu->hm.s.Event.fPending)
|
---|
3920 | {
|
---|
3921 | SVMEVENT Event;
|
---|
3922 | Event.u = pVCpu->hm.s.Event.u64IntInfo;
|
---|
3923 | if ( Event.n.u1Valid
|
---|
3924 | && Event.n.u3Type == SVM_EVENT_NMI
|
---|
3925 | && Event.n.u8Vector == X86_XCPT_NMI
|
---|
3926 | && !VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
|
---|
3927 | {
|
---|
3928 | VMCPU_FF_SET(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
3929 | }
|
---|
3930 | }
|
---|
3931 |
|
---|
3932 | return VINF_SUCCESS;
|
---|
3933 | }
|
---|
3934 | #endif
|
---|
3935 |
|
---|
3936 |
|
---|
3937 | /**
|
---|
3938 | * Does the preparations before executing guest code in AMD-V.
|
---|
3939 | *
|
---|
3940 | * This may cause longjmps to ring-3 and may even result in rescheduling to the
|
---|
3941 | * recompiler. We must be cautious what we do here regarding committing
|
---|
3942 | * guest-state information into the VMCB assuming we assuredly execute the guest
|
---|
3943 | * in AMD-V. If we fall back to the recompiler after updating the VMCB and
|
---|
3944 | * clearing the common-state (TRPM/forceflags), we must undo those changes so
|
---|
3945 | * that the recompiler can (and should) use them when it resumes guest
|
---|
3946 | * execution. Otherwise such operations must be done when we can no longer
|
---|
3947 | * exit to ring-3.
|
---|
3948 | *
|
---|
3949 | * @returns VBox status code (informational status codes included).
|
---|
3950 | * @retval VINF_SUCCESS if we can proceed with running the guest.
|
---|
3951 | * @retval VINF_* scheduling changes, we have to go back to ring-3.
|
---|
3952 | *
|
---|
3953 | * @param pVM The cross context VM structure.
|
---|
3954 | * @param pVCpu The cross context virtual CPU structure.
|
---|
3955 | * @param pCtx Pointer to the guest-CPU context.
|
---|
3956 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
3957 | */
|
---|
3958 | static int hmR0SvmPreRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
3959 | {
|
---|
3960 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
3961 | HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
|
---|
3962 |
|
---|
3963 | /* Check force flag actions that might require us to go back to ring-3. */
|
---|
3964 | int rc = hmR0SvmCheckForceFlags(pVM, pVCpu, pCtx);
|
---|
3965 | if (rc != VINF_SUCCESS)
|
---|
3966 | return rc;
|
---|
3967 |
|
---|
3968 | if (TRPMHasTrap(pVCpu))
|
---|
3969 | hmR0SvmTrpmTrapToPendingEvent(pVCpu);
|
---|
3970 | else if (!pVCpu->hm.s.Event.fPending)
|
---|
3971 | hmR0SvmEvaluatePendingEvent(pVCpu, pCtx);
|
---|
3972 |
|
---|
3973 | /*
|
---|
3974 | * On the oldest AMD-V systems, we may not get enough information to reinject an NMI.
|
---|
3975 | * Just do it in software, see @bugref{8411}.
|
---|
3976 | * NB: If we could continue a task switch exit we wouldn't need to do this.
|
---|
3977 | */
|
---|
3978 | if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending && (((pVCpu->hm.s.Event.u64IntInfo >> 8) & 7) == SVM_EVENT_NMI)))
|
---|
3979 | if (RT_UNLIKELY(!pVM->hm.s.svm.u32Features))
|
---|
3980 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
3981 |
|
---|
3982 | #ifdef HMSVM_SYNC_FULL_GUEST_STATE
|
---|
3983 | HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
|
---|
3984 | #endif
|
---|
3985 |
|
---|
3986 | /* Load the guest bits that are not shared with the host in any way since we can longjmp or get preempted. */
|
---|
3987 | rc = hmR0SvmLoadGuestState(pVM, pVCpu, pCtx);
|
---|
3988 | AssertRCReturn(rc, rc);
|
---|
3989 | STAM_COUNTER_INC(&pVCpu->hm.s.StatLoadFull);
|
---|
3990 |
|
---|
3991 | /*
|
---|
3992 | * If we're not intercepting TPR changes in the guest, save the guest TPR before the world-switch
|
---|
3993 | * so we can update it on the way back if the guest changed the TPR.
|
---|
3994 | */
|
---|
3995 | if (pVCpu->hm.s.svm.fSyncVTpr)
|
---|
3996 | {
|
---|
3997 | if (pVM->hm.s.fTPRPatchingActive)
|
---|
3998 | pSvmTransient->u8GuestTpr = pCtx->msrLSTAR;
|
---|
3999 | else
|
---|
4000 | {
|
---|
4001 | PCSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
4002 | pSvmTransient->u8GuestTpr = pVmcb->ctrl.IntCtrl.n.u8VTPR;
|
---|
4003 | }
|
---|
4004 | }
|
---|
4005 |
|
---|
4006 | /*
|
---|
4007 | * No longjmps to ring-3 from this point on!!!
|
---|
4008 | * Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
|
---|
4009 | * This also disables flushing of the R0-logger instance (if any).
|
---|
4010 | */
|
---|
4011 | VMMRZCallRing3Disable(pVCpu);
|
---|
4012 |
|
---|
4013 | /*
|
---|
4014 | * We disable interrupts so that we don't miss any interrupts that would flag preemption (IPI/timers etc.)
|
---|
4015 | * when thread-context hooks aren't used and we've been running with preemption disabled for a while.
|
---|
4016 | *
|
---|
4017 | * We need to check for force-flags that could've possible been altered since we last checked them (e.g.
|
---|
4018 | * by PDMGetInterrupt() leaving the PDM critical section, see @bugref{6398}).
|
---|
4019 | *
|
---|
4020 | * We also check a couple of other force-flags as a last opportunity to get the EMT back to ring-3 before
|
---|
4021 | * executing guest code.
|
---|
4022 | */
|
---|
4023 | pSvmTransient->fEFlags = ASMIntDisableFlags();
|
---|
4024 | if ( VM_FF_IS_PENDING(pVM, VM_FF_EMT_RENDEZVOUS | VM_FF_TM_VIRTUAL_SYNC)
|
---|
4025 | || VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_HM_TO_R3_MASK))
|
---|
4026 | {
|
---|
4027 | ASMSetFlags(pSvmTransient->fEFlags);
|
---|
4028 | VMMRZCallRing3Enable(pVCpu);
|
---|
4029 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHmToR3FF);
|
---|
4030 | return VINF_EM_RAW_TO_R3;
|
---|
4031 | }
|
---|
4032 | if (RTThreadPreemptIsPending(NIL_RTTHREAD))
|
---|
4033 | {
|
---|
4034 | ASMSetFlags(pSvmTransient->fEFlags);
|
---|
4035 | VMMRZCallRing3Enable(pVCpu);
|
---|
4036 | STAM_COUNTER_INC(&pVCpu->hm.s.StatPendingHostIrq);
|
---|
4037 | return VINF_EM_RAW_INTERRUPT;
|
---|
4038 | }
|
---|
4039 |
|
---|
4040 | /*
|
---|
4041 | * If we are injecting an NMI, we must set VMCPU_FF_BLOCK_NMIS only when we are going to execute
|
---|
4042 | * guest code for certain (no exits to ring-3). Otherwise, we could re-read the flag on re-entry into
|
---|
4043 | * AMD-V and conclude that NMI inhibition is active when we have not even delivered the NMI.
|
---|
4044 | *
|
---|
4045 | * With VT-x, this is handled by the Guest interruptibility information VMCS field which will set the
|
---|
4046 | * VMCS field after actually delivering the NMI which we read on VM-exit to determine the state.
|
---|
4047 | */
|
---|
4048 | if (pVCpu->hm.s.Event.fPending)
|
---|
4049 | {
|
---|
4050 | SVMEVENT Event;
|
---|
4051 | Event.u = pVCpu->hm.s.Event.u64IntInfo;
|
---|
4052 | if ( Event.n.u1Valid
|
---|
4053 | && Event.n.u3Type == SVM_EVENT_NMI
|
---|
4054 | && Event.n.u8Vector == X86_XCPT_NMI
|
---|
4055 | && !VMCPU_FF_IS_PENDING(pVCpu, VMCPU_FF_BLOCK_NMIS))
|
---|
4056 | {
|
---|
4057 | VMCPU_FF_SET(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
4058 | }
|
---|
4059 | }
|
---|
4060 |
|
---|
4061 | return VINF_SUCCESS;
|
---|
4062 | }
|
---|
4063 |
|
---|
4064 |
|
---|
4065 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
4066 | /**
|
---|
4067 | * Prepares to run nested-guest code in AMD-V and we've committed to doing so. This
|
---|
4068 | * means there is no backing out to ring-3 or anywhere else at this point.
|
---|
4069 | *
|
---|
4070 | * @param pVM The cross context VM structure.
|
---|
4071 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4072 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4073 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
4074 | *
|
---|
4075 | * @remarks Called with preemption disabled.
|
---|
4076 | * @remarks No-long-jump zone!!!
|
---|
4077 | */
|
---|
4078 | static void hmR0SvmPreRunGuestCommittedNested(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4079 | {
|
---|
4080 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
4081 | Assert(VMMR0IsLogFlushDisabled(pVCpu));
|
---|
4082 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
4083 | HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
|
---|
4084 |
|
---|
4085 | VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
|
---|
4086 | VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC); /* Indicate the start of guest execution. */
|
---|
4087 |
|
---|
4088 | PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
|
---|
4089 | hmR0SvmInjectPendingEvent(pVCpu, pCtx, pVmcbNstGst);
|
---|
4090 |
|
---|
4091 | if ( pVCpu->hm.s.fPreloadGuestFpu
|
---|
4092 | && !CPUMIsGuestFPUStateActive(pVCpu))
|
---|
4093 | {
|
---|
4094 | CPUMR0LoadGuestFPU(pVM, pVCpu); /* (Ignore rc, no need to set HM_CHANGED_HOST_CONTEXT for SVM.) */
|
---|
4095 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
4096 | }
|
---|
4097 |
|
---|
4098 | /* Load the state shared between host and nested-guest (FPU, debug). */
|
---|
4099 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE))
|
---|
4100 | hmR0SvmLoadSharedState(pVCpu, pVmcbNstGst, pCtx);
|
---|
4101 |
|
---|
4102 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT); /* Preemption might set this, nothing to do on AMD-V. */
|
---|
4103 | AssertMsg(!HMCPU_CF_VALUE(pVCpu), ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
|
---|
4104 |
|
---|
4105 | /* Setup TSC offsetting. */
|
---|
4106 | RTCPUID idCurrentCpu = hmR0GetCurrentCpu()->idCpu;
|
---|
4107 | if ( pSvmTransient->fUpdateTscOffsetting
|
---|
4108 | || idCurrentCpu != pVCpu->hm.s.idLastCpu)
|
---|
4109 | {
|
---|
4110 | hmR0SvmUpdateTscOffsettingNested(pVM, pVCpu, pCtx, pVmcbNstGst);
|
---|
4111 | pSvmTransient->fUpdateTscOffsetting = false;
|
---|
4112 | }
|
---|
4113 |
|
---|
4114 | /* If we've migrating CPUs, mark the VMCB Clean bits as dirty. */
|
---|
4115 | if (idCurrentCpu != pVCpu->hm.s.idLastCpu)
|
---|
4116 | pVmcbNstGst->ctrl.u32VmcbCleanBits = 0;
|
---|
4117 |
|
---|
4118 | /* Store status of the shared guest-host state at the time of VMRUN. */
|
---|
4119 | #if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
|
---|
4120 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
4121 | {
|
---|
4122 | pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActivePending(pVCpu);
|
---|
4123 | pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActivePending(pVCpu);
|
---|
4124 | }
|
---|
4125 | else
|
---|
4126 | #endif
|
---|
4127 | {
|
---|
4128 | pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActive(pVCpu);
|
---|
4129 | pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActive(pVCpu);
|
---|
4130 | }
|
---|
4131 | pSvmTransient->fWasGuestFPUStateActive = CPUMIsGuestFPUStateActive(pVCpu);
|
---|
4132 |
|
---|
4133 | /* The TLB flushing would've already been setup by the nested-hypervisor. */
|
---|
4134 | ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true); /* Used for TLB flushing, set this across the world switch. */
|
---|
4135 | hmR0SvmFlushTaggedTlb(pVCpu, pCtx, pVmcbNstGst);
|
---|
4136 | Assert(hmR0GetCurrentCpu()->idCpu == pVCpu->hm.s.idLastCpu);
|
---|
4137 |
|
---|
4138 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatEntry, &pVCpu->hm.s.StatInGC, x);
|
---|
4139 |
|
---|
4140 | TMNotifyStartOfExecution(pVCpu); /* Finally, notify TM to resume its clocks as we're about
|
---|
4141 | to start executing. */
|
---|
4142 |
|
---|
4143 | /*
|
---|
4144 | * Save the current Host TSC_AUX and write the guest TSC_AUX to the host, so that
|
---|
4145 | * RDTSCPs (that don't cause exits) reads the guest MSR. See @bugref{3324}.
|
---|
4146 | *
|
---|
4147 | * This should be done -after- any RDTSCPs for obtaining the host timestamp (TM, STAM etc).
|
---|
4148 | */
|
---|
4149 | uint8_t *pbMsrBitmap = (uint8_t *)pCtx->hwvirt.svm.CTX_SUFF(pvMsrBitmap);
|
---|
4150 | if ( (pVM->hm.s.cpuid.u32AMDFeatureEDX & X86_CPUID_EXT_FEATURE_EDX_RDTSCP)
|
---|
4151 | && !(pVmcbNstGst->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_RDTSCP))
|
---|
4152 | {
|
---|
4153 | hmR0SvmSetMsrPermission(pVmcbNstGst, pbMsrBitmap, MSR_K8_TSC_AUX, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
4154 | pVCpu->hm.s.u64HostTscAux = ASMRdMsr(MSR_K8_TSC_AUX);
|
---|
4155 | uint64_t u64GuestTscAux = CPUMR0GetGuestTscAux(pVCpu);
|
---|
4156 | if (u64GuestTscAux != pVCpu->hm.s.u64HostTscAux)
|
---|
4157 | ASMWrMsr(MSR_K8_TSC_AUX, u64GuestTscAux);
|
---|
4158 | pSvmTransient->fRestoreTscAuxMsr = true;
|
---|
4159 | }
|
---|
4160 | else
|
---|
4161 | {
|
---|
4162 | hmR0SvmSetMsrPermission(pVmcbNstGst, pbMsrBitmap, MSR_K8_TSC_AUX, SVMMSREXIT_INTERCEPT_READ, SVMMSREXIT_INTERCEPT_WRITE);
|
---|
4163 | pSvmTransient->fRestoreTscAuxMsr = false;
|
---|
4164 | }
|
---|
4165 |
|
---|
4166 | /*
|
---|
4167 | * If VMCB Clean bits isn't supported by the CPU or exposed by the guest,
|
---|
4168 | * mark all state-bits as dirty indicating to the CPU to re-load from VMCB.
|
---|
4169 | */
|
---|
4170 | bool const fSupportsVmcbCleanBits = hmR0SvmSupportsVmcbCleanBits(pVCpu, pCtx);
|
---|
4171 | if (!fSupportsVmcbCleanBits)
|
---|
4172 | pVmcbNstGst->ctrl.u32VmcbCleanBits = 0;
|
---|
4173 | }
|
---|
4174 | #endif
|
---|
4175 |
|
---|
4176 |
|
---|
4177 | /**
|
---|
4178 | * Prepares to run guest code in AMD-V and we've committed to doing so. This
|
---|
4179 | * means there is no backing out to ring-3 or anywhere else at this
|
---|
4180 | * point.
|
---|
4181 | *
|
---|
4182 | * @param pVM The cross context VM structure.
|
---|
4183 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4184 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4185 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
4186 | *
|
---|
4187 | * @remarks Called with preemption disabled.
|
---|
4188 | * @remarks No-long-jump zone!!!
|
---|
4189 | */
|
---|
4190 | static void hmR0SvmPreRunGuestCommitted(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4191 | {
|
---|
4192 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
4193 | Assert(VMMR0IsLogFlushDisabled(pVCpu));
|
---|
4194 | Assert(!RTThreadPreemptIsEnabled(NIL_RTTHREAD));
|
---|
4195 | HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
|
---|
4196 |
|
---|
4197 | VMCPU_ASSERT_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
|
---|
4198 | VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_EXEC); /* Indicate the start of guest execution. */
|
---|
4199 |
|
---|
4200 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
4201 | hmR0SvmInjectPendingEvent(pVCpu, pCtx, pVmcb);
|
---|
4202 |
|
---|
4203 | if ( pVCpu->hm.s.fPreloadGuestFpu
|
---|
4204 | && !CPUMIsGuestFPUStateActive(pVCpu))
|
---|
4205 | {
|
---|
4206 | CPUMR0LoadGuestFPU(pVM, pVCpu); /* (Ignore rc, no need to set HM_CHANGED_HOST_CONTEXT for SVM.) */
|
---|
4207 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
4208 | }
|
---|
4209 |
|
---|
4210 | /* Load the state shared between host and guest (FPU, debug). */
|
---|
4211 | if (HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_HOST_GUEST_SHARED_STATE))
|
---|
4212 | hmR0SvmLoadSharedState(pVCpu, pVmcb, pCtx);
|
---|
4213 |
|
---|
4214 | HMCPU_CF_CLEAR(pVCpu, HM_CHANGED_HOST_CONTEXT); /* Preemption might set this, nothing to do on AMD-V. */
|
---|
4215 | AssertMsg(!HMCPU_CF_VALUE(pVCpu), ("fContextUseFlags=%#RX32\n", HMCPU_CF_VALUE(pVCpu)));
|
---|
4216 |
|
---|
4217 | /* Setup TSC offsetting. */
|
---|
4218 | RTCPUID idCurrentCpu = hmR0GetCurrentCpu()->idCpu;
|
---|
4219 | if ( pSvmTransient->fUpdateTscOffsetting
|
---|
4220 | || idCurrentCpu != pVCpu->hm.s.idLastCpu)
|
---|
4221 | {
|
---|
4222 | hmR0SvmUpdateTscOffsetting(pVM, pVCpu, pVmcb);
|
---|
4223 | pSvmTransient->fUpdateTscOffsetting = false;
|
---|
4224 | }
|
---|
4225 |
|
---|
4226 | /* If we've migrating CPUs, mark the VMCB Clean bits as dirty. */
|
---|
4227 | if (idCurrentCpu != pVCpu->hm.s.idLastCpu)
|
---|
4228 | pVmcb->ctrl.u32VmcbCleanBits = 0;
|
---|
4229 |
|
---|
4230 | /* Store status of the shared guest-host state at the time of VMRUN. */
|
---|
4231 | #if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
|
---|
4232 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
4233 | {
|
---|
4234 | pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActivePending(pVCpu);
|
---|
4235 | pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActivePending(pVCpu);
|
---|
4236 | }
|
---|
4237 | else
|
---|
4238 | #endif
|
---|
4239 | {
|
---|
4240 | pSvmTransient->fWasGuestDebugStateActive = CPUMIsGuestDebugStateActive(pVCpu);
|
---|
4241 | pSvmTransient->fWasHyperDebugStateActive = CPUMIsHyperDebugStateActive(pVCpu);
|
---|
4242 | }
|
---|
4243 | pSvmTransient->fWasGuestFPUStateActive = CPUMIsGuestFPUStateActive(pVCpu);
|
---|
4244 |
|
---|
4245 | /* Flush the appropriate tagged-TLB entries. */
|
---|
4246 | ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, true); /* Used for TLB flushing, set this across the world switch. */
|
---|
4247 | hmR0SvmFlushTaggedTlb(pVCpu, pCtx, pVmcb);
|
---|
4248 | Assert(hmR0GetCurrentCpu()->idCpu == pVCpu->hm.s.idLastCpu);
|
---|
4249 |
|
---|
4250 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatEntry, &pVCpu->hm.s.StatInGC, x);
|
---|
4251 |
|
---|
4252 | TMNotifyStartOfExecution(pVCpu); /* Finally, notify TM to resume its clocks as we're about
|
---|
4253 | to start executing. */
|
---|
4254 |
|
---|
4255 | /*
|
---|
4256 | * Save the current Host TSC_AUX and write the guest TSC_AUX to the host, so that
|
---|
4257 | * RDTSCPs (that don't cause exits) reads the guest MSR. See @bugref{3324}.
|
---|
4258 | *
|
---|
4259 | * This should be done -after- any RDTSCPs for obtaining the host timestamp (TM, STAM etc).
|
---|
4260 | */
|
---|
4261 | uint8_t *pbMsrBitmap = (uint8_t *)pVCpu->hm.s.svm.pvMsrBitmap;
|
---|
4262 | if ( (pVM->hm.s.cpuid.u32AMDFeatureEDX & X86_CPUID_EXT_FEATURE_EDX_RDTSCP)
|
---|
4263 | && !(pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_RDTSCP))
|
---|
4264 | {
|
---|
4265 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_TSC_AUX, SVMMSREXIT_PASSTHRU_READ, SVMMSREXIT_PASSTHRU_WRITE);
|
---|
4266 | pVCpu->hm.s.u64HostTscAux = ASMRdMsr(MSR_K8_TSC_AUX);
|
---|
4267 | uint64_t u64GuestTscAux = CPUMR0GetGuestTscAux(pVCpu);
|
---|
4268 | if (u64GuestTscAux != pVCpu->hm.s.u64HostTscAux)
|
---|
4269 | ASMWrMsr(MSR_K8_TSC_AUX, u64GuestTscAux);
|
---|
4270 | pSvmTransient->fRestoreTscAuxMsr = true;
|
---|
4271 | }
|
---|
4272 | else
|
---|
4273 | {
|
---|
4274 | hmR0SvmSetMsrPermission(pVmcb, pbMsrBitmap, MSR_K8_TSC_AUX, SVMMSREXIT_INTERCEPT_READ, SVMMSREXIT_INTERCEPT_WRITE);
|
---|
4275 | pSvmTransient->fRestoreTscAuxMsr = false;
|
---|
4276 | }
|
---|
4277 |
|
---|
4278 | /* If VMCB Clean bits isn't supported by the CPU, simply mark all state-bits as dirty, indicating (re)load-from-VMCB. */
|
---|
4279 | bool const fSupportsVmcbCleanBits = hmR0SvmSupportsVmcbCleanBits(pVCpu, pCtx);
|
---|
4280 | if (!fSupportsVmcbCleanBits)
|
---|
4281 | pVmcb->ctrl.u32VmcbCleanBits = 0;
|
---|
4282 | }
|
---|
4283 |
|
---|
4284 |
|
---|
4285 | /**
|
---|
4286 | * Wrapper for running the guest code in AMD-V.
|
---|
4287 | *
|
---|
4288 | * @returns VBox strict status code.
|
---|
4289 | * @param pVM The cross context VM structure.
|
---|
4290 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4291 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4292 | *
|
---|
4293 | * @remarks No-long-jump zone!!!
|
---|
4294 | */
|
---|
4295 | DECLINLINE(int) hmR0SvmRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
4296 | {
|
---|
4297 | /*
|
---|
4298 | * 64-bit Windows uses XMM registers in the kernel as the Microsoft compiler expresses floating-point operations
|
---|
4299 | * using SSE instructions. Some XMM registers (XMM6-XMM15) are callee-saved and thus the need for this XMM wrapper.
|
---|
4300 | * Refer MSDN docs. "Configuring Programs for 64-bit / x64 Software Conventions / Register Usage" for details.
|
---|
4301 | */
|
---|
4302 | #ifdef VBOX_WITH_KERNEL_USING_XMM
|
---|
4303 | return hmR0SVMRunWrapXMM(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu,
|
---|
4304 | pVCpu->hm.s.svm.pfnVMRun);
|
---|
4305 | #else
|
---|
4306 | return pVCpu->hm.s.svm.pfnVMRun(pVCpu->hm.s.svm.HCPhysVmcbHost, pVCpu->hm.s.svm.HCPhysVmcb, pCtx, pVM, pVCpu);
|
---|
4307 | #endif
|
---|
4308 | }
|
---|
4309 |
|
---|
4310 |
|
---|
4311 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
4312 | /**
|
---|
4313 | * Wrapper for running the nested-guest code in AMD-V.
|
---|
4314 | *
|
---|
4315 | * @returns VBox strict status code.
|
---|
4316 | * @param pVM The cross context VM structure.
|
---|
4317 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4318 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4319 | *
|
---|
4320 | * @remarks No-long-jump zone!!!
|
---|
4321 | */
|
---|
4322 | DECLINLINE(int) hmR0SvmRunGuestNested(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
4323 | {
|
---|
4324 | /*
|
---|
4325 | * 64-bit Windows uses XMM registers in the kernel as the Microsoft compiler expresses floating-point operations
|
---|
4326 | * using SSE instructions. Some XMM registers (XMM6-XMM15) are callee-saved and thus the need for this XMM wrapper.
|
---|
4327 | * Refer MSDN docs. "Configuring Programs for 64-bit / x64 Software Conventions / Register Usage" for details.
|
---|
4328 | */
|
---|
4329 | #ifdef VBOX_WITH_KERNEL_USING_XMM
|
---|
4330 | return hmR0SVMRunWrapXMM(pVCpu->hm.s.svm.HCPhysVmcbHost, pCtx->hwvirt.svm.HCPhysVmcb, pCtx, pVM, pVCpu,
|
---|
4331 | pVCpu->hm.s.svm.pfnVMRun);
|
---|
4332 | #else
|
---|
4333 | return pVCpu->hm.s.svm.pfnVMRun(pVCpu->hm.s.svm.HCPhysVmcbHost, pCtx->hwvirt.svm.HCPhysVmcb, pCtx, pVM, pVCpu);
|
---|
4334 | #endif
|
---|
4335 | }
|
---|
4336 |
|
---|
4337 |
|
---|
4338 | /**
|
---|
4339 | * Performs some essential restoration of state after running nested-guest code in
|
---|
4340 | * AMD-V.
|
---|
4341 | *
|
---|
4342 | * @param pVM The cross context VM structure.
|
---|
4343 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4344 | * @param pMixedCtx Pointer to the nested-guest-CPU context. The data maybe
|
---|
4345 | * out-of-sync. Make sure to update the required fields
|
---|
4346 | * before using them.
|
---|
4347 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
4348 | * @param rcVMRun Return code of VMRUN.
|
---|
4349 | *
|
---|
4350 | * @remarks Called with interrupts disabled.
|
---|
4351 | * @remarks No-long-jump zone!!! This function will however re-enable longjmps
|
---|
4352 | * unconditionally when it is safe to do so.
|
---|
4353 | */
|
---|
4354 | static void hmR0SvmPostRunGuestNested(PVM pVM, PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient, int rcVMRun)
|
---|
4355 | {
|
---|
4356 | RT_NOREF(pVM);
|
---|
4357 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
4358 |
|
---|
4359 | ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, false); /* See HMInvalidatePageOnAllVCpus(): used for TLB flushing. */
|
---|
4360 | ASMAtomicIncU32(&pVCpu->hm.s.cWorldSwitchExits); /* Initialized in vmR3CreateUVM(): used for EMT poking. */
|
---|
4361 |
|
---|
4362 | /* TSC read must be done early for maximum accuracy. */
|
---|
4363 | PSVMVMCB pVmcbNstGst = pMixedCtx->hwvirt.svm.CTX_SUFF(pVmcb);
|
---|
4364 | PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
|
---|
4365 | PCSVMNESTEDVMCBCACHE pVmcbNstGstCache = &pVCpu->hm.s.svm.NstGstVmcbCache;
|
---|
4366 | if (!(pVmcbNstGstCtrl->u64InterceptCtrl & SVM_CTRL_INTERCEPT_RDTSC))
|
---|
4367 | {
|
---|
4368 | /*
|
---|
4369 | * Undo what we did in hmR0SvmUpdateTscOffsettingNested() but don't restore the
|
---|
4370 | * nested-guest VMCB TSC offset here. It shall eventually be restored on #VMEXIT
|
---|
4371 | * later by HMSvmNstGstVmExitNotify().
|
---|
4372 | */
|
---|
4373 | TMCpuTickSetLastSeen(pVCpu, ASMReadTSC() + pVmcbNstGstCtrl->u64TSCOffset - pVmcbNstGstCache->u64TSCOffset);
|
---|
4374 | }
|
---|
4375 |
|
---|
4376 | if (pSvmTransient->fRestoreTscAuxMsr)
|
---|
4377 | {
|
---|
4378 | uint64_t u64GuestTscAuxMsr = ASMRdMsr(MSR_K8_TSC_AUX);
|
---|
4379 | CPUMR0SetGuestTscAux(pVCpu, u64GuestTscAuxMsr);
|
---|
4380 | if (u64GuestTscAuxMsr != pVCpu->hm.s.u64HostTscAux)
|
---|
4381 | ASMWrMsr(MSR_K8_TSC_AUX, pVCpu->hm.s.u64HostTscAux);
|
---|
4382 | }
|
---|
4383 |
|
---|
4384 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatInGC, &pVCpu->hm.s.StatExit1, x);
|
---|
4385 | TMNotifyEndOfExecution(pVCpu); /* Notify TM that the guest is no longer running. */
|
---|
4386 | VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
|
---|
4387 |
|
---|
4388 | Assert(!(ASMGetFlags() & X86_EFL_IF));
|
---|
4389 | ASMSetFlags(pSvmTransient->fEFlags); /* Enable interrupts. */
|
---|
4390 | VMMRZCallRing3Enable(pVCpu); /* It is now safe to do longjmps to ring-3!!! */
|
---|
4391 |
|
---|
4392 | /* Mark the VMCB-state cache as unmodified by VMM. */
|
---|
4393 | pVmcbNstGstCtrl->u32VmcbCleanBits = HMSVM_VMCB_CLEAN_ALL;
|
---|
4394 |
|
---|
4395 | /* If VMRUN failed, we can bail out early. This does -not- cover SVM_EXIT_INVALID. */
|
---|
4396 | if (RT_UNLIKELY(rcVMRun != VINF_SUCCESS))
|
---|
4397 | {
|
---|
4398 | Log4(("VMRUN failure: rcVMRun=%Rrc\n", rcVMRun));
|
---|
4399 | return;
|
---|
4400 | }
|
---|
4401 |
|
---|
4402 | pSvmTransient->u64ExitCode = pVmcbNstGstCtrl->u64ExitCode; /* Save the #VMEXIT reason. */
|
---|
4403 | HMCPU_EXIT_HISTORY_ADD(pVCpu, pVmcbNstGstCtrl->u64ExitCode);/* Update the #VMEXIT history array. */
|
---|
4404 | pSvmTransient->fVectoringDoublePF = false; /* Vectoring double page-fault needs to be determined later. */
|
---|
4405 | pSvmTransient->fVectoringPF = false; /* Vectoring page-fault needs to be determined later. */
|
---|
4406 |
|
---|
4407 | Assert(!pVCpu->hm.s.svm.fSyncVTpr);
|
---|
4408 | hmR0SvmSaveGuestState(pVCpu, pMixedCtx, pVmcbNstGst); /* Save the nested-guest state from the VMCB to the
|
---|
4409 | guest-CPU context. */
|
---|
4410 | }
|
---|
4411 | #endif
|
---|
4412 |
|
---|
4413 | /**
|
---|
4414 | * Performs some essential restoration of state after running guest code in
|
---|
4415 | * AMD-V.
|
---|
4416 | *
|
---|
4417 | * @param pVM The cross context VM structure.
|
---|
4418 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4419 | * @param pMixedCtx Pointer to the guest-CPU context. The data maybe
|
---|
4420 | * out-of-sync. Make sure to update the required fields
|
---|
4421 | * before using them.
|
---|
4422 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
4423 | * @param rcVMRun Return code of VMRUN.
|
---|
4424 | *
|
---|
4425 | * @remarks Called with interrupts disabled.
|
---|
4426 | * @remarks No-long-jump zone!!! This function will however re-enable longjmps
|
---|
4427 | * unconditionally when it is safe to do so.
|
---|
4428 | */
|
---|
4429 | static void hmR0SvmPostRunGuest(PVM pVM, PVMCPU pVCpu, PCPUMCTX pMixedCtx, PSVMTRANSIENT pSvmTransient, int rcVMRun)
|
---|
4430 | {
|
---|
4431 | Assert(!VMMRZCallRing3IsEnabled(pVCpu));
|
---|
4432 |
|
---|
4433 | ASMAtomicWriteBool(&pVCpu->hm.s.fCheckedTLBFlush, false); /* See HMInvalidatePageOnAllVCpus(): used for TLB flushing. */
|
---|
4434 | ASMAtomicIncU32(&pVCpu->hm.s.cWorldSwitchExits); /* Initialized in vmR3CreateUVM(): used for EMT poking. */
|
---|
4435 |
|
---|
4436 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
4437 | pVmcb->ctrl.u32VmcbCleanBits = HMSVM_VMCB_CLEAN_ALL; /* Mark the VMCB-state cache as unmodified by VMM. */
|
---|
4438 |
|
---|
4439 | /* TSC read must be done early for maximum accuracy. */
|
---|
4440 | if (!(pVmcb->ctrl.u64InterceptCtrl & SVM_CTRL_INTERCEPT_RDTSC))
|
---|
4441 | TMCpuTickSetLastSeen(pVCpu, ASMReadTSC() + pVmcb->ctrl.u64TSCOffset);
|
---|
4442 |
|
---|
4443 | if (pSvmTransient->fRestoreTscAuxMsr)
|
---|
4444 | {
|
---|
4445 | uint64_t u64GuestTscAuxMsr = ASMRdMsr(MSR_K8_TSC_AUX);
|
---|
4446 | CPUMR0SetGuestTscAux(pVCpu, u64GuestTscAuxMsr);
|
---|
4447 | if (u64GuestTscAuxMsr != pVCpu->hm.s.u64HostTscAux)
|
---|
4448 | ASMWrMsr(MSR_K8_TSC_AUX, pVCpu->hm.s.u64HostTscAux);
|
---|
4449 | }
|
---|
4450 |
|
---|
4451 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatInGC, &pVCpu->hm.s.StatExit1, x);
|
---|
4452 | TMNotifyEndOfExecution(pVCpu); /* Notify TM that the guest is no longer running. */
|
---|
4453 | VMCPU_SET_STATE(pVCpu, VMCPUSTATE_STARTED_HM);
|
---|
4454 |
|
---|
4455 | Assert(!(ASMGetFlags() & X86_EFL_IF));
|
---|
4456 | ASMSetFlags(pSvmTransient->fEFlags); /* Enable interrupts. */
|
---|
4457 | VMMRZCallRing3Enable(pVCpu); /* It is now safe to do longjmps to ring-3!!! */
|
---|
4458 |
|
---|
4459 | /* If VMRUN failed, we can bail out early. This does -not- cover SVM_EXIT_INVALID. */
|
---|
4460 | if (RT_UNLIKELY(rcVMRun != VINF_SUCCESS))
|
---|
4461 | {
|
---|
4462 | Log4(("VMRUN failure: rcVMRun=%Rrc\n", rcVMRun));
|
---|
4463 | return;
|
---|
4464 | }
|
---|
4465 |
|
---|
4466 | pSvmTransient->u64ExitCode = pVmcb->ctrl.u64ExitCode; /* Save the #VMEXIT reason. */
|
---|
4467 | HMCPU_EXIT_HISTORY_ADD(pVCpu, pVmcb->ctrl.u64ExitCode); /* Update the #VMEXIT history array. */
|
---|
4468 | pSvmTransient->fVectoringDoublePF = false; /* Vectoring double page-fault needs to be determined later. */
|
---|
4469 | pSvmTransient->fVectoringPF = false; /* Vectoring page-fault needs to be determined later. */
|
---|
4470 |
|
---|
4471 | hmR0SvmSaveGuestState(pVCpu, pMixedCtx, pVmcb); /* Save the guest state from the VMCB to the guest-CPU context. */
|
---|
4472 |
|
---|
4473 | if (RT_LIKELY(pSvmTransient->u64ExitCode != SVM_EXIT_INVALID))
|
---|
4474 | {
|
---|
4475 | if (pVCpu->hm.s.svm.fSyncVTpr)
|
---|
4476 | {
|
---|
4477 | /* TPR patching (for 32-bit guests) uses LSTAR MSR for holding the TPR value, otherwise uses the VTPR. */
|
---|
4478 | if ( pVM->hm.s.fTPRPatchingActive
|
---|
4479 | && (pMixedCtx->msrLSTAR & 0xff) != pSvmTransient->u8GuestTpr)
|
---|
4480 | {
|
---|
4481 | int rc = APICSetTpr(pVCpu, pMixedCtx->msrLSTAR & 0xff);
|
---|
4482 | AssertRC(rc);
|
---|
4483 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
4484 | }
|
---|
4485 | else if (pSvmTransient->u8GuestTpr != pVmcb->ctrl.IntCtrl.n.u8VTPR)
|
---|
4486 | {
|
---|
4487 | int rc = APICSetTpr(pVCpu, pVmcb->ctrl.IntCtrl.n.u8VTPR << 4);
|
---|
4488 | AssertRC(rc);
|
---|
4489 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
4490 | }
|
---|
4491 | }
|
---|
4492 | }
|
---|
4493 | }
|
---|
4494 |
|
---|
4495 |
|
---|
4496 | /**
|
---|
4497 | * Runs the guest code using AMD-V.
|
---|
4498 | *
|
---|
4499 | * @returns VBox status code.
|
---|
4500 | * @param pVM The cross context VM structure.
|
---|
4501 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4502 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4503 | * @param pcLoops Pointer to the number of executed loops.
|
---|
4504 | */
|
---|
4505 | static int hmR0SvmRunGuestCodeNormal(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t *pcLoops)
|
---|
4506 | {
|
---|
4507 | uint32_t const cMaxResumeLoops = pVM->hm.s.cMaxResumeLoops;
|
---|
4508 | Assert(pcLoops);
|
---|
4509 | Assert(*pcLoops <= cMaxResumeLoops);
|
---|
4510 |
|
---|
4511 | SVMTRANSIENT SvmTransient;
|
---|
4512 | SvmTransient.fUpdateTscOffsetting = true;
|
---|
4513 |
|
---|
4514 | int rc = VERR_INTERNAL_ERROR_5;
|
---|
4515 | for (;;)
|
---|
4516 | {
|
---|
4517 | Assert(!HMR0SuspendPending());
|
---|
4518 | HMSVM_ASSERT_CPU_SAFE();
|
---|
4519 |
|
---|
4520 | /* Preparatory work for running guest code, this may force us to return
|
---|
4521 | to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
|
---|
4522 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
|
---|
4523 | rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
4524 | if (rc != VINF_SUCCESS)
|
---|
4525 | break;
|
---|
4526 |
|
---|
4527 | /*
|
---|
4528 | * No longjmps to ring-3 from this point on!!!
|
---|
4529 | * Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
|
---|
4530 | * This also disables flushing of the R0-logger instance (if any).
|
---|
4531 | */
|
---|
4532 | hmR0SvmPreRunGuestCommitted(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
4533 | rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
|
---|
4534 |
|
---|
4535 | /* Restore any residual host-state and save any bits shared between host
|
---|
4536 | and guest into the guest-CPU state. Re-enables interrupts! */
|
---|
4537 | hmR0SvmPostRunGuest(pVM, pVCpu, pCtx, &SvmTransient, rc);
|
---|
4538 |
|
---|
4539 | if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
|
---|
4540 | || SvmTransient.u64ExitCode == SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
|
---|
4541 | {
|
---|
4542 | if (rc == VINF_SUCCESS)
|
---|
4543 | rc = VERR_SVM_INVALID_GUEST_STATE;
|
---|
4544 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
|
---|
4545 | hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
|
---|
4546 | break;
|
---|
4547 | }
|
---|
4548 |
|
---|
4549 | /* Handle the #VMEXIT. */
|
---|
4550 | HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
|
---|
4551 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
|
---|
4552 | VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, pVCpu->hm.s.svm.pVmcb);
|
---|
4553 | rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
|
---|
4554 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
|
---|
4555 | if (rc != VINF_SUCCESS)
|
---|
4556 | break;
|
---|
4557 | if (++(*pcLoops) >= cMaxResumeLoops)
|
---|
4558 | {
|
---|
4559 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
|
---|
4560 | rc = VINF_EM_RAW_INTERRUPT;
|
---|
4561 | break;
|
---|
4562 | }
|
---|
4563 | }
|
---|
4564 |
|
---|
4565 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
|
---|
4566 | return rc;
|
---|
4567 | }
|
---|
4568 |
|
---|
4569 |
|
---|
4570 | /**
|
---|
4571 | * Runs the guest code using AMD-V in single step mode.
|
---|
4572 | *
|
---|
4573 | * @returns VBox status code.
|
---|
4574 | * @param pVM The cross context VM structure.
|
---|
4575 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4576 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4577 | * @param pcLoops Pointer to the number of executed loops.
|
---|
4578 | */
|
---|
4579 | static int hmR0SvmRunGuestCodeStep(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t *pcLoops)
|
---|
4580 | {
|
---|
4581 | uint32_t const cMaxResumeLoops = pVM->hm.s.cMaxResumeLoops;
|
---|
4582 | Assert(pcLoops);
|
---|
4583 | Assert(*pcLoops <= cMaxResumeLoops);
|
---|
4584 |
|
---|
4585 | SVMTRANSIENT SvmTransient;
|
---|
4586 | SvmTransient.fUpdateTscOffsetting = true;
|
---|
4587 |
|
---|
4588 | uint16_t uCsStart = pCtx->cs.Sel;
|
---|
4589 | uint64_t uRipStart = pCtx->rip;
|
---|
4590 |
|
---|
4591 | int rc = VERR_INTERNAL_ERROR_5;
|
---|
4592 | for (;;)
|
---|
4593 | {
|
---|
4594 | Assert(!HMR0SuspendPending());
|
---|
4595 | AssertMsg(pVCpu->hm.s.idEnteredCpu == RTMpCpuId(),
|
---|
4596 | ("Illegal migration! Entered on CPU %u Current %u cLoops=%u\n", (unsigned)pVCpu->hm.s.idEnteredCpu,
|
---|
4597 | (unsigned)RTMpCpuId(), *pcLoops));
|
---|
4598 |
|
---|
4599 | /* Preparatory work for running guest code, this may force us to return
|
---|
4600 | to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
|
---|
4601 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
|
---|
4602 | rc = hmR0SvmPreRunGuest(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
4603 | if (rc != VINF_SUCCESS)
|
---|
4604 | break;
|
---|
4605 |
|
---|
4606 | /*
|
---|
4607 | * No longjmps to ring-3 from this point on!!!
|
---|
4608 | * Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
|
---|
4609 | * This also disables flushing of the R0-logger instance (if any).
|
---|
4610 | */
|
---|
4611 | VMMRZCallRing3Disable(pVCpu);
|
---|
4612 | VMMRZCallRing3RemoveNotification(pVCpu);
|
---|
4613 | hmR0SvmPreRunGuestCommitted(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
4614 |
|
---|
4615 | rc = hmR0SvmRunGuest(pVM, pVCpu, pCtx);
|
---|
4616 |
|
---|
4617 | /*
|
---|
4618 | * Restore any residual host-state and save any bits shared between host and guest into the guest-CPU state.
|
---|
4619 | * This will also re-enable longjmps to ring-3 when it has reached a safe point!!!
|
---|
4620 | */
|
---|
4621 | hmR0SvmPostRunGuest(pVM, pVCpu, pCtx, &SvmTransient, rc);
|
---|
4622 | if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
|
---|
4623 | || SvmTransient.u64ExitCode == SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
|
---|
4624 | {
|
---|
4625 | if (rc == VINF_SUCCESS)
|
---|
4626 | rc = VERR_SVM_INVALID_GUEST_STATE;
|
---|
4627 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
|
---|
4628 | hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
|
---|
4629 | return rc;
|
---|
4630 | }
|
---|
4631 |
|
---|
4632 | /* Handle the #VMEXIT. */
|
---|
4633 | HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
|
---|
4634 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
|
---|
4635 | VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, pVCpu->hm.s.svm.pVmcb);
|
---|
4636 | rc = hmR0SvmHandleExit(pVCpu, pCtx, &SvmTransient);
|
---|
4637 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
|
---|
4638 | if (rc != VINF_SUCCESS)
|
---|
4639 | break;
|
---|
4640 | if (++(*pcLoops) >= cMaxResumeLoops)
|
---|
4641 | {
|
---|
4642 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
|
---|
4643 | rc = VINF_EM_RAW_INTERRUPT;
|
---|
4644 | break;
|
---|
4645 | }
|
---|
4646 |
|
---|
4647 | /*
|
---|
4648 | * Did the RIP change, if so, consider it a single step.
|
---|
4649 | * Otherwise, make sure one of the TFs gets set.
|
---|
4650 | */
|
---|
4651 | if ( pCtx->rip != uRipStart
|
---|
4652 | || pCtx->cs.Sel != uCsStart)
|
---|
4653 | {
|
---|
4654 | rc = VINF_EM_DBG_STEPPED;
|
---|
4655 | break;
|
---|
4656 | }
|
---|
4657 | pVCpu->hm.s.fContextUseFlags |= HM_CHANGED_GUEST_DEBUG;
|
---|
4658 | }
|
---|
4659 |
|
---|
4660 | /*
|
---|
4661 | * Clear the X86_EFL_TF if necessary.
|
---|
4662 | */
|
---|
4663 | if (pVCpu->hm.s.fClearTrapFlag)
|
---|
4664 | {
|
---|
4665 | pVCpu->hm.s.fClearTrapFlag = false;
|
---|
4666 | pCtx->eflags.Bits.u1TF = 0;
|
---|
4667 | }
|
---|
4668 |
|
---|
4669 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
|
---|
4670 | return rc;
|
---|
4671 | }
|
---|
4672 |
|
---|
4673 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
4674 | /**
|
---|
4675 | * Runs the nested-guest code using AMD-V.
|
---|
4676 | *
|
---|
4677 | * @returns VBox status code.
|
---|
4678 | * @param pVM The cross context VM structure.
|
---|
4679 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4680 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4681 | * @param pcLoops Pointer to the number of executed loops. If we're switching
|
---|
4682 | * from the guest-code execution loop to this nested-guest
|
---|
4683 | * execution loop pass the remainder value, else pass 0.
|
---|
4684 | */
|
---|
4685 | static int hmR0SvmRunGuestCodeNested(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t *pcLoops)
|
---|
4686 | {
|
---|
4687 | HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
|
---|
4688 | Assert(pcLoops);
|
---|
4689 | Assert(*pcLoops <= pVM->hm.s.cMaxResumeLoops);
|
---|
4690 |
|
---|
4691 | SVMTRANSIENT SvmTransient;
|
---|
4692 | SvmTransient.fUpdateTscOffsetting = true;
|
---|
4693 |
|
---|
4694 | int rc = VERR_INTERNAL_ERROR_4;
|
---|
4695 | for (;;)
|
---|
4696 | {
|
---|
4697 | Assert(!HMR0SuspendPending());
|
---|
4698 | HMSVM_ASSERT_CPU_SAFE();
|
---|
4699 |
|
---|
4700 | /* Preparatory work for running nested-guest code, this may force us to return
|
---|
4701 | to ring-3. This bugger disables interrupts on VINF_SUCCESS! */
|
---|
4702 | STAM_PROFILE_ADV_START(&pVCpu->hm.s.StatEntry, x);
|
---|
4703 | rc = hmR0SvmPreRunGuestNested(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
4704 | if (rc != VINF_SUCCESS)
|
---|
4705 | break;
|
---|
4706 |
|
---|
4707 | /*
|
---|
4708 | * No longjmps to ring-3 from this point on!!!
|
---|
4709 | * Asserts() will still longjmp to ring-3 (but won't return), which is intentional, better than a kernel panic.
|
---|
4710 | * This also disables flushing of the R0-logger instance (if any).
|
---|
4711 | */
|
---|
4712 | hmR0SvmPreRunGuestCommittedNested(pVM, pVCpu, pCtx, &SvmTransient);
|
---|
4713 |
|
---|
4714 | rc = hmR0SvmRunGuestNested(pVM, pVCpu, pCtx);
|
---|
4715 |
|
---|
4716 | /* Restore any residual host-state and save any bits shared between host
|
---|
4717 | and guest into the guest-CPU state. Re-enables interrupts! */
|
---|
4718 | hmR0SvmPostRunGuestNested(pVM, pVCpu, pCtx, &SvmTransient, rc);
|
---|
4719 |
|
---|
4720 | /** @todo This needs some work... we probably should cause a \#VMEXIT on
|
---|
4721 | * SVM_EXIT_INVALID and handle rc != VINF_SUCCESS differently. */
|
---|
4722 | if (RT_UNLIKELY( rc != VINF_SUCCESS /* Check for VMRUN errors. */
|
---|
4723 | || SvmTransient.u64ExitCode == SVM_EXIT_INVALID)) /* Check for invalid guest-state errors. */
|
---|
4724 | {
|
---|
4725 | if (rc == VINF_SUCCESS)
|
---|
4726 | rc = VERR_SVM_INVALID_GUEST_STATE;
|
---|
4727 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit1, x);
|
---|
4728 | hmR0SvmReportWorldSwitchError(pVM, pVCpu, rc, pCtx);
|
---|
4729 | break;
|
---|
4730 | }
|
---|
4731 |
|
---|
4732 | /* Handle the #VMEXIT. */
|
---|
4733 | HMSVM_EXITCODE_STAM_COUNTER_INC(SvmTransient.u64ExitCode);
|
---|
4734 | STAM_PROFILE_ADV_STOP_START(&pVCpu->hm.s.StatExit1, &pVCpu->hm.s.StatExit2, x);
|
---|
4735 | VBOXVMM_R0_HMSVM_VMEXIT(pVCpu, pCtx, SvmTransient.u64ExitCode, pCtx->hwvirt.svm.CTX_SUFF(pVmcb));
|
---|
4736 | rc = hmR0SvmHandleExitNested(pVCpu, pCtx, &SvmTransient);
|
---|
4737 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatExit2, x);
|
---|
4738 | if (rc != VINF_SUCCESS)
|
---|
4739 | break;
|
---|
4740 | if (++(*pcLoops) >= pVM->hm.s.cMaxResumeLoops)
|
---|
4741 | {
|
---|
4742 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchMaxResumeLoops);
|
---|
4743 | rc = VINF_EM_RAW_INTERRUPT;
|
---|
4744 | break;
|
---|
4745 | }
|
---|
4746 |
|
---|
4747 | /** @todo handle single-stepping */
|
---|
4748 | }
|
---|
4749 |
|
---|
4750 | STAM_PROFILE_ADV_STOP(&pVCpu->hm.s.StatEntry, x);
|
---|
4751 | return rc;
|
---|
4752 | }
|
---|
4753 | #endif
|
---|
4754 |
|
---|
4755 |
|
---|
4756 | /**
|
---|
4757 | * Runs the guest code using AMD-V.
|
---|
4758 | *
|
---|
4759 | * @returns Strict VBox status code.
|
---|
4760 | * @param pVM The cross context VM structure.
|
---|
4761 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4762 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4763 | */
|
---|
4764 | VMMR0DECL(VBOXSTRICTRC) SVMR0RunGuestCode(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
4765 | {
|
---|
4766 | Assert(VMMRZCallRing3IsEnabled(pVCpu));
|
---|
4767 | HMSVM_ASSERT_PREEMPT_SAFE();
|
---|
4768 | VMMRZCallRing3SetNotification(pVCpu, hmR0SvmCallRing3Callback, pCtx);
|
---|
4769 |
|
---|
4770 | uint32_t cLoops = 0;
|
---|
4771 | int rc;
|
---|
4772 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
4773 | if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
4774 | #endif
|
---|
4775 | {
|
---|
4776 | if (!pVCpu->hm.s.fSingleInstruction)
|
---|
4777 | rc = hmR0SvmRunGuestCodeNormal(pVM, pVCpu, pCtx, &cLoops);
|
---|
4778 | else
|
---|
4779 | rc = hmR0SvmRunGuestCodeStep(pVM, pVCpu, pCtx, &cLoops);
|
---|
4780 | }
|
---|
4781 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
4782 | else
|
---|
4783 | {
|
---|
4784 | rc = VINF_SVM_VMRUN;
|
---|
4785 | }
|
---|
4786 |
|
---|
4787 | /* Re-check the nested-guest condition here as we may be transitioning from the normal
|
---|
4788 | execution loop into the nested-guest, hence this is not placed in the 'else' part above. */
|
---|
4789 | if (rc == VINF_SVM_VMRUN)
|
---|
4790 | {
|
---|
4791 | rc = hmR0SvmRunGuestCodeNested(pVM, pVCpu, pCtx, &cLoops);
|
---|
4792 | if (rc == VINF_SVM_VMEXIT)
|
---|
4793 | rc = VINF_SUCCESS;
|
---|
4794 | }
|
---|
4795 | #endif
|
---|
4796 |
|
---|
4797 | /* Fixup error codes. */
|
---|
4798 | if (rc == VERR_EM_INTERPRETER)
|
---|
4799 | rc = VINF_EM_RAW_EMULATE_INSTR;
|
---|
4800 | else if (rc == VINF_EM_RESET)
|
---|
4801 | rc = VINF_EM_TRIPLE_FAULT;
|
---|
4802 |
|
---|
4803 | /* Prepare to return to ring-3. This will remove longjmp notifications. */
|
---|
4804 | rc = hmR0SvmExitToRing3(pVM, pVCpu, pCtx, rc);
|
---|
4805 | Assert(!VMMRZCallRing3IsNotificationSet(pVCpu));
|
---|
4806 | return rc;
|
---|
4807 | }
|
---|
4808 |
|
---|
4809 |
|
---|
4810 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
4811 | /**
|
---|
4812 | * Determines whether an IOIO intercept is active for the nested-guest or not.
|
---|
4813 | *
|
---|
4814 | * @param pvIoBitmap Pointer to the nested-guest IO bitmap.
|
---|
4815 | * @param pIoExitInfo Pointer to the SVMIOIOEXITINFO.
|
---|
4816 | */
|
---|
4817 | static bool hmR0SvmIsIoInterceptActive(void *pvIoBitmap, PSVMIOIOEXITINFO pIoExitInfo)
|
---|
4818 | {
|
---|
4819 | const uint16_t u16Port = pIoExitInfo->n.u16Port;
|
---|
4820 | const SVMIOIOTYPE enmIoType = (SVMIOIOTYPE)pIoExitInfo->n.u1Type;
|
---|
4821 | const uint8_t cbReg = (pIoExitInfo->u >> SVM_IOIO_OP_SIZE_SHIFT) & 7;
|
---|
4822 | const uint8_t cAddrSizeBits = ((pIoExitInfo->u >> SVM_IOIO_ADDR_SIZE_SHIFT) & 7) << 4;
|
---|
4823 | const uint8_t iEffSeg = pIoExitInfo->n.u3SEG;
|
---|
4824 | const bool fRep = pIoExitInfo->n.u1REP;
|
---|
4825 | const bool fStrIo = pIoExitInfo->n.u1STR;
|
---|
4826 |
|
---|
4827 | return HMSvmIsIOInterceptActive(pvIoBitmap, u16Port, enmIoType, cbReg, cAddrSizeBits, iEffSeg, fRep, fStrIo,
|
---|
4828 | NULL /* pIoExitInfo */);
|
---|
4829 | }
|
---|
4830 |
|
---|
4831 |
|
---|
4832 | /**
|
---|
4833 | * Handles a nested-guest \#VMEXIT (for all EXITCODE values except
|
---|
4834 | * SVM_EXIT_INVALID).
|
---|
4835 | *
|
---|
4836 | * @returns VBox status code (informational status codes included).
|
---|
4837 | * @param pVCpu The cross context virtual CPU structure.
|
---|
4838 | * @param pCtx Pointer to the guest-CPU context.
|
---|
4839 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
4840 | */
|
---|
4841 | static int hmR0SvmHandleExitNested(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
4842 | {
|
---|
4843 | HMSVM_ASSERT_IN_NESTED_GUEST(pCtx);
|
---|
4844 | Assert(pSvmTransient->u64ExitCode != SVM_EXIT_INVALID);
|
---|
4845 | Assert(pSvmTransient->u64ExitCode <= SVM_EXIT_MAX);
|
---|
4846 |
|
---|
4847 | #define HM_SVM_VMEXIT_NESTED(a_pVCpu, a_uExitCode, a_uExitInfo1, a_uExitInfo2) \
|
---|
4848 | VBOXSTRICTRC_TODO(IEMExecSvmVmexit(a_pVCpu, a_uExitCode, a_uExitInfo1, a_uExitInfo2))
|
---|
4849 |
|
---|
4850 | /*
|
---|
4851 | * For all the #VMEXITs here we primarily figure out if the #VMEXIT is expected
|
---|
4852 | * by the nested-guest. If it isn't, it should be handled by the (outer) guest.
|
---|
4853 | */
|
---|
4854 | PSVMVMCB pVmcbNstGst = pCtx->hwvirt.svm.CTX_SUFF(pVmcb);
|
---|
4855 | PSVMVMCBCTRL pVmcbNstGstCtrl = &pVmcbNstGst->ctrl;
|
---|
4856 | uint64_t const uExitCode = pVmcbNstGstCtrl->u64ExitCode;
|
---|
4857 | uint64_t const uExitInfo1 = pVmcbNstGstCtrl->u64ExitInfo1;
|
---|
4858 | uint64_t const uExitInfo2 = pVmcbNstGstCtrl->u64ExitInfo2;
|
---|
4859 |
|
---|
4860 | Assert(uExitCode == pVmcbNstGstCtrl->u64ExitCode);
|
---|
4861 | switch (uExitCode)
|
---|
4862 | {
|
---|
4863 | case SVM_EXIT_CPUID:
|
---|
4864 | {
|
---|
4865 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_CPUID))
|
---|
4866 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4867 | return hmR0SvmExitCpuid(pVCpu, pCtx, pSvmTransient);
|
---|
4868 | }
|
---|
4869 |
|
---|
4870 | case SVM_EXIT_RDTSC:
|
---|
4871 | {
|
---|
4872 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_RDTSC))
|
---|
4873 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4874 | return hmR0SvmExitRdtsc(pVCpu, pCtx, pSvmTransient);
|
---|
4875 | }
|
---|
4876 |
|
---|
4877 | case SVM_EXIT_RDTSCP:
|
---|
4878 | {
|
---|
4879 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_RDTSCP))
|
---|
4880 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4881 | return hmR0SvmExitRdtscp(pVCpu, pCtx, pSvmTransient);
|
---|
4882 | }
|
---|
4883 |
|
---|
4884 |
|
---|
4885 | case SVM_EXIT_MONITOR:
|
---|
4886 | {
|
---|
4887 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_MONITOR))
|
---|
4888 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4889 | return hmR0SvmExitMonitor(pVCpu, pCtx, pSvmTransient);
|
---|
4890 | }
|
---|
4891 |
|
---|
4892 | case SVM_EXIT_MWAIT:
|
---|
4893 | {
|
---|
4894 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_MWAIT))
|
---|
4895 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4896 | return hmR0SvmExitMwait(pVCpu, pCtx, pSvmTransient);
|
---|
4897 | }
|
---|
4898 |
|
---|
4899 | case SVM_EXIT_HLT:
|
---|
4900 | {
|
---|
4901 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_HLT))
|
---|
4902 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4903 | return hmR0SvmExitHlt(pVCpu, pCtx, pSvmTransient);
|
---|
4904 | }
|
---|
4905 |
|
---|
4906 | case SVM_EXIT_MSR:
|
---|
4907 | {
|
---|
4908 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_MSR_PROT))
|
---|
4909 | {
|
---|
4910 | uint32_t const idMsr = pCtx->ecx;
|
---|
4911 | uint16_t offMsrpm;
|
---|
4912 | uint32_t uMsrpmBit;
|
---|
4913 | int rc = HMSvmGetMsrpmOffsetAndBit(idMsr, &offMsrpm, &uMsrpmBit);
|
---|
4914 | if (RT_SUCCESS(rc))
|
---|
4915 | {
|
---|
4916 | void const *pvMsrBitmap = pCtx->hwvirt.svm.CTX_SUFF(pvMsrBitmap);
|
---|
4917 | bool const fInterceptRead = ASMBitTest(pvMsrBitmap, (offMsrpm << 3) + uMsrpmBit);
|
---|
4918 | bool const fInterceptWrite = ASMBitTest(pvMsrBitmap, (offMsrpm << 3) + uMsrpmBit + 1);
|
---|
4919 |
|
---|
4920 | if ( (fInterceptWrite && pVmcbNstGstCtrl->u64ExitInfo1 == SVM_EXIT1_MSR_WRITE)
|
---|
4921 | || (fInterceptRead && pVmcbNstGstCtrl->u64ExitInfo1 == SVM_EXIT1_MSR_READ))
|
---|
4922 | {
|
---|
4923 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4924 | }
|
---|
4925 | }
|
---|
4926 | else
|
---|
4927 | {
|
---|
4928 | /*
|
---|
4929 | * MSRs not covered by the MSRPM automatically cause an #VMEXIT.
|
---|
4930 | * See AMD-V spec. "15.11 MSR Intercepts".
|
---|
4931 | */
|
---|
4932 | Assert(rc == VERR_OUT_OF_RANGE);
|
---|
4933 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4934 | }
|
---|
4935 | }
|
---|
4936 | return hmR0SvmExitMsr(pVCpu, pCtx, pSvmTransient);
|
---|
4937 | }
|
---|
4938 |
|
---|
4939 | case SVM_EXIT_IOIO:
|
---|
4940 | {
|
---|
4941 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_IOIO_PROT))
|
---|
4942 | {
|
---|
4943 | void *pvIoBitmap = pCtx->hwvirt.svm.CTX_SUFF(pvIoBitmap);
|
---|
4944 | SVMIOIOEXITINFO IoExitInfo;
|
---|
4945 | IoExitInfo.u = pVmcbNstGst->ctrl.u64ExitInfo1;
|
---|
4946 | bool const fIntercept = hmR0SvmIsIoInterceptActive(pvIoBitmap, &IoExitInfo);
|
---|
4947 | if (fIntercept)
|
---|
4948 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4949 | }
|
---|
4950 | return hmR0SvmExitIOInstr(pVCpu, pCtx, pSvmTransient);
|
---|
4951 | }
|
---|
4952 |
|
---|
4953 | case SVM_EXIT_EXCEPTION_14: /* X86_XCPT_PF */
|
---|
4954 | {
|
---|
4955 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
4956 | if (pVM->hm.s.fNestedPaging)
|
---|
4957 | {
|
---|
4958 | uint32_t const u32ErrCode = pVmcbNstGstCtrl->u64ExitInfo1;
|
---|
4959 | uint64_t const uFaultAddress = pVmcbNstGstCtrl->u64ExitInfo2;
|
---|
4960 |
|
---|
4961 | /* If the nested-guest is intercepting #PFs, cause a #PF #VMEXIT. */
|
---|
4962 | if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_PF))
|
---|
4963 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, u32ErrCode, uFaultAddress);
|
---|
4964 |
|
---|
4965 | /* If the nested-guest is not intercepting #PFs, forward the #PF to the nested-guest. */
|
---|
4966 | hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
|
---|
4967 | return VINF_SUCCESS;
|
---|
4968 | }
|
---|
4969 | return hmR0SvmExitXcptPFNested(pVCpu, pCtx,pSvmTransient);
|
---|
4970 | }
|
---|
4971 |
|
---|
4972 | case SVM_EXIT_EXCEPTION_7: /* X86_XCPT_NM */
|
---|
4973 | {
|
---|
4974 | if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_NM))
|
---|
4975 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4976 | hmR0SvmSetPendingXcptNM(pVCpu);
|
---|
4977 | return VINF_SUCCESS;
|
---|
4978 | }
|
---|
4979 |
|
---|
4980 | case SVM_EXIT_EXCEPTION_6: /* X86_XCPT_UD */
|
---|
4981 | {
|
---|
4982 | if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_UD))
|
---|
4983 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4984 | hmR0SvmSetPendingXcptUD(pVCpu);
|
---|
4985 | return VINF_SUCCESS;
|
---|
4986 | }
|
---|
4987 |
|
---|
4988 | case SVM_EXIT_EXCEPTION_16: /* X86_XCPT_MF */
|
---|
4989 | {
|
---|
4990 | if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_MF))
|
---|
4991 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
4992 | hmR0SvmSetPendingXcptMF(pVCpu);
|
---|
4993 | return VINF_SUCCESS;
|
---|
4994 | }
|
---|
4995 |
|
---|
4996 | case SVM_EXIT_EXCEPTION_1: /* X86_XCPT_DB */
|
---|
4997 | {
|
---|
4998 | if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_DB))
|
---|
4999 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5000 | return hmR0SvmNestedExitXcptDB(pVCpu, pCtx, pSvmTransient);
|
---|
5001 | }
|
---|
5002 |
|
---|
5003 | case SVM_EXIT_EXCEPTION_17: /* X86_XCPT_AC */
|
---|
5004 | {
|
---|
5005 | if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_AC))
|
---|
5006 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5007 | return hmR0SvmExitXcptAC(pVCpu, pCtx, pSvmTransient);
|
---|
5008 | }
|
---|
5009 |
|
---|
5010 | case SVM_EXIT_EXCEPTION_3: /* X86_XCPT_BP */
|
---|
5011 | {
|
---|
5012 | if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, X86_XCPT_BP))
|
---|
5013 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5014 | return hmR0SvmNestedExitXcptBP(pVCpu, pCtx, pSvmTransient);
|
---|
5015 | }
|
---|
5016 |
|
---|
5017 | case SVM_EXIT_READ_CR0:
|
---|
5018 | case SVM_EXIT_READ_CR3:
|
---|
5019 | case SVM_EXIT_READ_CR4:
|
---|
5020 | {
|
---|
5021 | uint8_t const uCr = uExitCode - SVM_EXIT_READ_CR0;
|
---|
5022 | if (HMIsGuestSvmReadCRxInterceptSet(pVCpu, pCtx, uCr))
|
---|
5023 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5024 | return hmR0SvmExitReadCRx(pVCpu, pCtx, pSvmTransient);
|
---|
5025 | }
|
---|
5026 |
|
---|
5027 | case SVM_EXIT_WRITE_CR0:
|
---|
5028 | case SVM_EXIT_WRITE_CR3:
|
---|
5029 | case SVM_EXIT_WRITE_CR4:
|
---|
5030 | case SVM_EXIT_WRITE_CR8: /** @todo Shouldn't writes to CR8 go to V_TPR instead since we run with V_INTR_MASKING set?? */
|
---|
5031 | {
|
---|
5032 | uint8_t const uCr = uExitCode - SVM_EXIT_WRITE_CR0;
|
---|
5033 | Log4(("hmR0SvmHandleExitNested: Write CRx: u16InterceptWrCRx=%#x u64ExitCode=%#RX64 %#x\n",
|
---|
5034 | pVmcbNstGstCtrl->u16InterceptWrCRx, pSvmTransient->u64ExitCode, uCr));
|
---|
5035 |
|
---|
5036 | if (HMIsGuestSvmWriteCRxInterceptSet(pVCpu, pCtx, uCr))
|
---|
5037 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5038 | return hmR0SvmExitWriteCRx(pVCpu, pCtx, pSvmTransient);
|
---|
5039 | }
|
---|
5040 |
|
---|
5041 | case SVM_EXIT_PAUSE:
|
---|
5042 | {
|
---|
5043 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_PAUSE))
|
---|
5044 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5045 | return hmR0SvmExitPause(pVCpu, pCtx, pSvmTransient);
|
---|
5046 | }
|
---|
5047 |
|
---|
5048 | case SVM_EXIT_VINTR:
|
---|
5049 | {
|
---|
5050 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VINTR))
|
---|
5051 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5052 | return hmR0SvmExitUnexpected(pVCpu, pCtx, pSvmTransient);
|
---|
5053 | }
|
---|
5054 |
|
---|
5055 | case SVM_EXIT_INTR:
|
---|
5056 | case SVM_EXIT_NMI:
|
---|
5057 | case SVM_EXIT_SMI:
|
---|
5058 | {
|
---|
5059 | /*
|
---|
5060 | * We shouldn't direct physical interrupts, NMIs, SMIs to the nested-guest.
|
---|
5061 | *
|
---|
5062 | * Although we don't intercept SMIs, the nested-guest might. Therefore, we
|
---|
5063 | * might get an SMI #VMEXIT here so simply ignore rather than causing a
|
---|
5064 | * corresponding nested-guest #VMEXIT.
|
---|
5065 | */
|
---|
5066 | return hmR0SvmExitIntr(pVCpu, pCtx, pSvmTransient);
|
---|
5067 | }
|
---|
5068 |
|
---|
5069 | case SVM_EXIT_FERR_FREEZE:
|
---|
5070 | {
|
---|
5071 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_FERR_FREEZE))
|
---|
5072 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5073 | return hmR0SvmExitIntr(pVCpu, pCtx, pSvmTransient);
|
---|
5074 | }
|
---|
5075 |
|
---|
5076 | case SVM_EXIT_INVLPG:
|
---|
5077 | {
|
---|
5078 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_INVLPG))
|
---|
5079 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5080 | return hmR0SvmExitInvlpg(pVCpu, pCtx, pSvmTransient);
|
---|
5081 | }
|
---|
5082 |
|
---|
5083 | case SVM_EXIT_WBINVD:
|
---|
5084 | {
|
---|
5085 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_WBINVD))
|
---|
5086 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5087 | return hmR0SvmExitWbinvd(pVCpu, pCtx, pSvmTransient);
|
---|
5088 | }
|
---|
5089 |
|
---|
5090 | case SVM_EXIT_INVD:
|
---|
5091 | {
|
---|
5092 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_INVD))
|
---|
5093 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5094 | return hmR0SvmExitInvd(pVCpu, pCtx, pSvmTransient);
|
---|
5095 | }
|
---|
5096 |
|
---|
5097 | case SVM_EXIT_RDPMC:
|
---|
5098 | {
|
---|
5099 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_RDPMC))
|
---|
5100 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5101 | return hmR0SvmExitRdpmc(pVCpu, pCtx, pSvmTransient);
|
---|
5102 | }
|
---|
5103 |
|
---|
5104 | default:
|
---|
5105 | {
|
---|
5106 | switch (uExitCode)
|
---|
5107 | {
|
---|
5108 | case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
|
---|
5109 | case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7: case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9:
|
---|
5110 | case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11: case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13:
|
---|
5111 | case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
|
---|
5112 | {
|
---|
5113 | uint8_t const uDr = uExitCode - SVM_EXIT_READ_DR0;
|
---|
5114 | if (HMIsGuestSvmReadDRxInterceptSet(pVCpu, pCtx, uDr))
|
---|
5115 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5116 | return hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
|
---|
5117 | }
|
---|
5118 |
|
---|
5119 | case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
|
---|
5120 | case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7: case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9:
|
---|
5121 | case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11: case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13:
|
---|
5122 | case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
|
---|
5123 | {
|
---|
5124 | uint8_t const uDr = uExitCode - SVM_EXIT_WRITE_DR0;
|
---|
5125 | if (HMIsGuestSvmWriteDRxInterceptSet(pVCpu, pCtx, uDr))
|
---|
5126 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5127 | return hmR0SvmExitWriteDRx(pVCpu, pCtx, pSvmTransient);
|
---|
5128 | }
|
---|
5129 |
|
---|
5130 | /* The exceptions not handled here are already handled individually above (as they occur more frequently). */
|
---|
5131 | case SVM_EXIT_EXCEPTION_0: /*case SVM_EXIT_EXCEPTION_1:*/ case SVM_EXIT_EXCEPTION_2:
|
---|
5132 | /*case SVM_EXIT_EXCEPTION_3:*/ case SVM_EXIT_EXCEPTION_4: case SVM_EXIT_EXCEPTION_5:
|
---|
5133 | /*case SVM_EXIT_EXCEPTION_6:*/ /*case SVM_EXIT_EXCEPTION_7:*/ case SVM_EXIT_EXCEPTION_8:
|
---|
5134 | case SVM_EXIT_EXCEPTION_9: case SVM_EXIT_EXCEPTION_10: case SVM_EXIT_EXCEPTION_11:
|
---|
5135 | case SVM_EXIT_EXCEPTION_12: case SVM_EXIT_EXCEPTION_13: /*case SVM_EXIT_EXCEPTION_14:*/
|
---|
5136 | case SVM_EXIT_EXCEPTION_15: case SVM_EXIT_EXCEPTION_16: /*case SVM_EXIT_EXCEPTION_17:*/
|
---|
5137 | case SVM_EXIT_EXCEPTION_18: case SVM_EXIT_EXCEPTION_19: case SVM_EXIT_EXCEPTION_20:
|
---|
5138 | case SVM_EXIT_EXCEPTION_21: case SVM_EXIT_EXCEPTION_22: case SVM_EXIT_EXCEPTION_23:
|
---|
5139 | case SVM_EXIT_EXCEPTION_24: case SVM_EXIT_EXCEPTION_25: case SVM_EXIT_EXCEPTION_26:
|
---|
5140 | case SVM_EXIT_EXCEPTION_27: case SVM_EXIT_EXCEPTION_28: case SVM_EXIT_EXCEPTION_29:
|
---|
5141 | case SVM_EXIT_EXCEPTION_30: case SVM_EXIT_EXCEPTION_31:
|
---|
5142 | {
|
---|
5143 | uint8_t const uVector = uExitCode - SVM_EXIT_EXCEPTION_0;
|
---|
5144 | if (HMIsGuestSvmXcptInterceptSet(pVCpu, pCtx, uVector))
|
---|
5145 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5146 | return hmR0SvmExitXcptGeneric(pVCpu, pCtx, pSvmTransient);
|
---|
5147 | }
|
---|
5148 |
|
---|
5149 | case SVM_EXIT_XSETBV:
|
---|
5150 | {
|
---|
5151 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_XSETBV))
|
---|
5152 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5153 | return hmR0SvmExitXsetbv(pVCpu, pCtx, pSvmTransient);
|
---|
5154 | }
|
---|
5155 |
|
---|
5156 | case SVM_EXIT_TASK_SWITCH:
|
---|
5157 | {
|
---|
5158 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_TASK_SWITCH))
|
---|
5159 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5160 | return hmR0SvmExitTaskSwitch(pVCpu, pCtx, pSvmTransient);
|
---|
5161 | }
|
---|
5162 |
|
---|
5163 | case SVM_EXIT_IRET:
|
---|
5164 | {
|
---|
5165 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_IRET))
|
---|
5166 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5167 | return hmR0SvmExitIret(pVCpu, pCtx, pSvmTransient);
|
---|
5168 | }
|
---|
5169 |
|
---|
5170 | case SVM_EXIT_SHUTDOWN:
|
---|
5171 | {
|
---|
5172 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_SHUTDOWN))
|
---|
5173 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5174 | return hmR0SvmExitShutdown(pVCpu, pCtx, pSvmTransient);
|
---|
5175 | }
|
---|
5176 |
|
---|
5177 | case SVM_EXIT_VMMCALL:
|
---|
5178 | {
|
---|
5179 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VMMCALL))
|
---|
5180 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5181 | return hmR0SvmExitVmmCall(pVCpu, pCtx, pSvmTransient);
|
---|
5182 | }
|
---|
5183 |
|
---|
5184 | case SVM_EXIT_CLGI:
|
---|
5185 | {
|
---|
5186 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_CLGI))
|
---|
5187 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5188 | return hmR0SvmExitClgi(pVCpu, pCtx, pSvmTransient);
|
---|
5189 | }
|
---|
5190 |
|
---|
5191 | case SVM_EXIT_STGI:
|
---|
5192 | {
|
---|
5193 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_STGI))
|
---|
5194 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5195 | return hmR0SvmExitStgi(pVCpu, pCtx, pSvmTransient);
|
---|
5196 | }
|
---|
5197 |
|
---|
5198 | case SVM_EXIT_VMLOAD:
|
---|
5199 | {
|
---|
5200 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VMLOAD))
|
---|
5201 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5202 | return hmR0SvmExitVmload(pVCpu, pCtx, pSvmTransient);
|
---|
5203 | }
|
---|
5204 |
|
---|
5205 | case SVM_EXIT_VMSAVE:
|
---|
5206 | {
|
---|
5207 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VMSAVE))
|
---|
5208 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5209 | return hmR0SvmExitVmsave(pVCpu, pCtx, pSvmTransient);
|
---|
5210 | }
|
---|
5211 |
|
---|
5212 | case SVM_EXIT_INVLPGA:
|
---|
5213 | {
|
---|
5214 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_INVLPGA))
|
---|
5215 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5216 | return hmR0SvmExitInvlpga(pVCpu, pCtx, pSvmTransient);
|
---|
5217 | }
|
---|
5218 |
|
---|
5219 | case SVM_EXIT_VMRUN:
|
---|
5220 | {
|
---|
5221 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_VMRUN))
|
---|
5222 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5223 | return hmR0SvmExitVmrun(pVCpu, pCtx, pSvmTransient);
|
---|
5224 | }
|
---|
5225 |
|
---|
5226 | case SVM_EXIT_RSM:
|
---|
5227 | {
|
---|
5228 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_RSM))
|
---|
5229 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5230 | hmR0SvmSetPendingXcptUD(pVCpu);
|
---|
5231 | return VINF_SUCCESS;
|
---|
5232 | }
|
---|
5233 |
|
---|
5234 | case SVM_EXIT_SKINIT:
|
---|
5235 | {
|
---|
5236 | if (HMIsGuestSvmCtrlInterceptSet(pVCpu, pCtx, SVM_CTRL_INTERCEPT_SKINIT))
|
---|
5237 | return HM_SVM_VMEXIT_NESTED(pVCpu, uExitCode, uExitInfo1, uExitInfo2);
|
---|
5238 | hmR0SvmSetPendingXcptUD(pVCpu);
|
---|
5239 | return VINF_SUCCESS;
|
---|
5240 | }
|
---|
5241 |
|
---|
5242 | case SVM_EXIT_INIT: /* We shouldn't get INIT signals while executing a nested-guest. */
|
---|
5243 | case SVM_EXIT_NPF: /* We don't yet support nested-paging for nested-guests, so this should never happen. */
|
---|
5244 | {
|
---|
5245 | return hmR0SvmExitUnexpected(pVCpu, pCtx, pSvmTransient);
|
---|
5246 | }
|
---|
5247 |
|
---|
5248 | default:
|
---|
5249 | {
|
---|
5250 | AssertMsgFailed(("hmR0SvmHandleExitNested: Unknown exit code %#x\n", pSvmTransient->u64ExitCode));
|
---|
5251 | pVCpu->hm.s.u32HMError = pSvmTransient->u64ExitCode;
|
---|
5252 | return VERR_SVM_UNKNOWN_EXIT;
|
---|
5253 | }
|
---|
5254 | }
|
---|
5255 | }
|
---|
5256 | }
|
---|
5257 | /* not reached */
|
---|
5258 |
|
---|
5259 | #undef HM_SVM_VMEXIT_NESTED
|
---|
5260 | }
|
---|
5261 | #endif
|
---|
5262 |
|
---|
5263 |
|
---|
5264 | /**
|
---|
5265 | * Handles a guest \#VMEXIT (for all EXITCODE values except SVM_EXIT_INVALID).
|
---|
5266 | *
|
---|
5267 | * @returns VBox status code (informational status codes included).
|
---|
5268 | * @param pVCpu The cross context virtual CPU structure.
|
---|
5269 | * @param pCtx Pointer to the guest-CPU context.
|
---|
5270 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
5271 | */
|
---|
5272 | static int hmR0SvmHandleExit(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
5273 | {
|
---|
5274 | Assert(pSvmTransient->u64ExitCode != SVM_EXIT_INVALID);
|
---|
5275 | Assert(pSvmTransient->u64ExitCode <= SVM_EXIT_MAX);
|
---|
5276 |
|
---|
5277 | /*
|
---|
5278 | * The ordering of the case labels is based on most-frequently-occurring #VMEXITs for most guests under
|
---|
5279 | * normal workloads (for some definition of "normal").
|
---|
5280 | */
|
---|
5281 | uint64_t const uExitCode = pSvmTransient->u64ExitCode;
|
---|
5282 | switch (uExitCode)
|
---|
5283 | {
|
---|
5284 | case SVM_EXIT_NPF:
|
---|
5285 | return hmR0SvmExitNestedPF(pVCpu, pCtx, pSvmTransient);
|
---|
5286 |
|
---|
5287 | case SVM_EXIT_IOIO:
|
---|
5288 | return hmR0SvmExitIOInstr(pVCpu, pCtx, pSvmTransient);
|
---|
5289 |
|
---|
5290 | case SVM_EXIT_RDTSC:
|
---|
5291 | return hmR0SvmExitRdtsc(pVCpu, pCtx, pSvmTransient);
|
---|
5292 |
|
---|
5293 | case SVM_EXIT_RDTSCP:
|
---|
5294 | return hmR0SvmExitRdtscp(pVCpu, pCtx, pSvmTransient);
|
---|
5295 |
|
---|
5296 | case SVM_EXIT_CPUID:
|
---|
5297 | return hmR0SvmExitCpuid(pVCpu, pCtx, pSvmTransient);
|
---|
5298 |
|
---|
5299 | case SVM_EXIT_EXCEPTION_14: /* X86_XCPT_PF */
|
---|
5300 | return hmR0SvmExitXcptPF(pVCpu, pCtx, pSvmTransient);
|
---|
5301 |
|
---|
5302 | case SVM_EXIT_EXCEPTION_7: /* X86_XCPT_NM */
|
---|
5303 | return hmR0SvmExitXcptNM(pVCpu, pCtx, pSvmTransient);
|
---|
5304 |
|
---|
5305 | case SVM_EXIT_EXCEPTION_6: /* X86_XCPT_UD */
|
---|
5306 | return hmR0SvmExitXcptUD(pVCpu, pCtx, pSvmTransient);
|
---|
5307 |
|
---|
5308 | case SVM_EXIT_EXCEPTION_16: /* X86_XCPT_MF */
|
---|
5309 | return hmR0SvmExitXcptMF(pVCpu, pCtx, pSvmTransient);
|
---|
5310 |
|
---|
5311 | case SVM_EXIT_EXCEPTION_1: /* X86_XCPT_DB */
|
---|
5312 | return hmR0SvmExitXcptDB(pVCpu, pCtx, pSvmTransient);
|
---|
5313 |
|
---|
5314 | case SVM_EXIT_EXCEPTION_17: /* X86_XCPT_AC */
|
---|
5315 | return hmR0SvmExitXcptAC(pVCpu, pCtx, pSvmTransient);
|
---|
5316 |
|
---|
5317 | case SVM_EXIT_EXCEPTION_3: /* X86_XCPT_BP */
|
---|
5318 | return hmR0SvmExitXcptBP(pVCpu, pCtx, pSvmTransient);
|
---|
5319 |
|
---|
5320 | case SVM_EXIT_MONITOR:
|
---|
5321 | return hmR0SvmExitMonitor(pVCpu, pCtx, pSvmTransient);
|
---|
5322 |
|
---|
5323 | case SVM_EXIT_MWAIT:
|
---|
5324 | return hmR0SvmExitMwait(pVCpu, pCtx, pSvmTransient);
|
---|
5325 |
|
---|
5326 | case SVM_EXIT_HLT:
|
---|
5327 | return hmR0SvmExitHlt(pVCpu, pCtx, pSvmTransient);
|
---|
5328 |
|
---|
5329 | case SVM_EXIT_READ_CR0:
|
---|
5330 | case SVM_EXIT_READ_CR3:
|
---|
5331 | case SVM_EXIT_READ_CR4:
|
---|
5332 | return hmR0SvmExitReadCRx(pVCpu, pCtx, pSvmTransient);
|
---|
5333 |
|
---|
5334 | case SVM_EXIT_WRITE_CR0:
|
---|
5335 | case SVM_EXIT_WRITE_CR3:
|
---|
5336 | case SVM_EXIT_WRITE_CR4:
|
---|
5337 | case SVM_EXIT_WRITE_CR8:
|
---|
5338 | return hmR0SvmExitWriteCRx(pVCpu, pCtx, pSvmTransient);
|
---|
5339 |
|
---|
5340 | case SVM_EXIT_PAUSE:
|
---|
5341 | return hmR0SvmExitPause(pVCpu, pCtx, pSvmTransient);
|
---|
5342 |
|
---|
5343 | case SVM_EXIT_VMMCALL:
|
---|
5344 | return hmR0SvmExitVmmCall(pVCpu, pCtx, pSvmTransient);
|
---|
5345 |
|
---|
5346 | case SVM_EXIT_VINTR:
|
---|
5347 | return hmR0SvmExitVIntr(pVCpu, pCtx, pSvmTransient);
|
---|
5348 |
|
---|
5349 | case SVM_EXIT_INTR:
|
---|
5350 | case SVM_EXIT_FERR_FREEZE:
|
---|
5351 | case SVM_EXIT_NMI:
|
---|
5352 | return hmR0SvmExitIntr(pVCpu, pCtx, pSvmTransient);
|
---|
5353 |
|
---|
5354 | case SVM_EXIT_MSR:
|
---|
5355 | return hmR0SvmExitMsr(pVCpu, pCtx, pSvmTransient);
|
---|
5356 |
|
---|
5357 | case SVM_EXIT_INVLPG:
|
---|
5358 | return hmR0SvmExitInvlpg(pVCpu, pCtx, pSvmTransient);
|
---|
5359 |
|
---|
5360 | case SVM_EXIT_WBINVD:
|
---|
5361 | return hmR0SvmExitWbinvd(pVCpu, pCtx, pSvmTransient);
|
---|
5362 |
|
---|
5363 | case SVM_EXIT_INVD:
|
---|
5364 | return hmR0SvmExitInvd(pVCpu, pCtx, pSvmTransient);
|
---|
5365 |
|
---|
5366 | case SVM_EXIT_RDPMC:
|
---|
5367 | return hmR0SvmExitRdpmc(pVCpu, pCtx, pSvmTransient);
|
---|
5368 |
|
---|
5369 | default:
|
---|
5370 | {
|
---|
5371 | switch (pSvmTransient->u64ExitCode)
|
---|
5372 | {
|
---|
5373 | case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
|
---|
5374 | case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7: case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9:
|
---|
5375 | case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11: case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13:
|
---|
5376 | case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
|
---|
5377 | return hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
|
---|
5378 |
|
---|
5379 | case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
|
---|
5380 | case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7: case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9:
|
---|
5381 | case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11: case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13:
|
---|
5382 | case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
|
---|
5383 | return hmR0SvmExitWriteDRx(pVCpu, pCtx, pSvmTransient);
|
---|
5384 |
|
---|
5385 | case SVM_EXIT_XSETBV:
|
---|
5386 | return hmR0SvmExitXsetbv(pVCpu, pCtx, pSvmTransient);
|
---|
5387 |
|
---|
5388 | case SVM_EXIT_TASK_SWITCH:
|
---|
5389 | return hmR0SvmExitTaskSwitch(pVCpu, pCtx, pSvmTransient);
|
---|
5390 |
|
---|
5391 | case SVM_EXIT_IRET:
|
---|
5392 | return hmR0SvmExitIret(pVCpu, pCtx, pSvmTransient);
|
---|
5393 |
|
---|
5394 | case SVM_EXIT_SHUTDOWN:
|
---|
5395 | return hmR0SvmExitShutdown(pVCpu, pCtx, pSvmTransient);
|
---|
5396 |
|
---|
5397 | case SVM_EXIT_SMI:
|
---|
5398 | case SVM_EXIT_INIT:
|
---|
5399 | {
|
---|
5400 | /*
|
---|
5401 | * We don't intercept SMIs. As for INIT signals, it really shouldn't ever happen here.
|
---|
5402 | * If it ever does, we want to know about it so log the exit code and bail.
|
---|
5403 | */
|
---|
5404 | return hmR0SvmExitUnexpected(pVCpu, pCtx, pSvmTransient);
|
---|
5405 | }
|
---|
5406 |
|
---|
5407 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
5408 | case SVM_EXIT_CLGI: return hmR0SvmExitClgi(pVCpu, pCtx, pSvmTransient);
|
---|
5409 | case SVM_EXIT_STGI: return hmR0SvmExitStgi(pVCpu, pCtx, pSvmTransient);
|
---|
5410 | case SVM_EXIT_VMLOAD: return hmR0SvmExitVmload(pVCpu, pCtx, pSvmTransient);
|
---|
5411 | case SVM_EXIT_VMSAVE: return hmR0SvmExitVmsave(pVCpu, pCtx, pSvmTransient);
|
---|
5412 | case SVM_EXIT_INVLPGA: return hmR0SvmExitInvlpga(pVCpu, pCtx, pSvmTransient);
|
---|
5413 | case SVM_EXIT_VMRUN: return hmR0SvmExitVmrun(pVCpu, pCtx, pSvmTransient);
|
---|
5414 | #else
|
---|
5415 | case SVM_EXIT_CLGI:
|
---|
5416 | case SVM_EXIT_STGI:
|
---|
5417 | case SVM_EXIT_VMLOAD:
|
---|
5418 | case SVM_EXIT_VMSAVE:
|
---|
5419 | case SVM_EXIT_INVLPGA:
|
---|
5420 | case SVM_EXIT_VMRUN:
|
---|
5421 | #endif
|
---|
5422 | case SVM_EXIT_RSM:
|
---|
5423 | case SVM_EXIT_SKINIT:
|
---|
5424 | {
|
---|
5425 | hmR0SvmSetPendingXcptUD(pVCpu);
|
---|
5426 | return VINF_SUCCESS;
|
---|
5427 | }
|
---|
5428 |
|
---|
5429 | #ifdef HMSVM_ALWAYS_TRAP_ALL_XCPTS
|
---|
5430 | case SVM_EXIT_EXCEPTION_0: /* X86_XCPT_DE */
|
---|
5431 | /* SVM_EXIT_EXCEPTION_1: */ /* X86_XCPT_DB - Handled above. */
|
---|
5432 | case SVM_EXIT_EXCEPTION_2: /* X86_XCPT_NMI */
|
---|
5433 | /* SVM_EXIT_EXCEPTION_3: */ /* X86_XCPT_BP - Handled above. */
|
---|
5434 | case SVM_EXIT_EXCEPTION_4: /* X86_XCPT_OF */
|
---|
5435 | case SVM_EXIT_EXCEPTION_5: /* X86_XCPT_BR */
|
---|
5436 | /* SVM_EXIT_EXCEPTION_6: */ /* X86_XCPT_UD - Handled above. */
|
---|
5437 | /* SVM_EXIT_EXCEPTION_7: */ /* X86_XCPT_NM - Handled above. */
|
---|
5438 | case SVM_EXIT_EXCEPTION_8: /* X86_XCPT_DF */
|
---|
5439 | case SVM_EXIT_EXCEPTION_9: /* X86_XCPT_CO_SEG_OVERRUN */
|
---|
5440 | case SVM_EXIT_EXCEPTION_10: /* X86_XCPT_TS */
|
---|
5441 | case SVM_EXIT_EXCEPTION_11: /* X86_XCPT_NP */
|
---|
5442 | case SVM_EXIT_EXCEPTION_12: /* X86_XCPT_SS */
|
---|
5443 | case SVM_EXIT_EXCEPTION_13: /* X86_XCPT_GP */
|
---|
5444 | /* SVM_EXIT_EXCEPTION_14: */ /* X86_XCPT_PF - Handled above. */
|
---|
5445 | case SVM_EXIT_EXCEPTION_15: /* Reserved. */
|
---|
5446 | /* SVM_EXIT_EXCEPTION_16: */ /* X86_XCPT_MF - Handled above. */
|
---|
5447 | /* SVM_EXIT_EXCEPTION_17: */ /* X86_XCPT_AC - Handled above. */
|
---|
5448 | case SVM_EXIT_EXCEPTION_18: /* X86_XCPT_MC */
|
---|
5449 | case SVM_EXIT_EXCEPTION_19: /* X86_XCPT_XF */
|
---|
5450 | case SVM_EXIT_EXCEPTION_20: case SVM_EXIT_EXCEPTION_21: case SVM_EXIT_EXCEPTION_22:
|
---|
5451 | case SVM_EXIT_EXCEPTION_23: case SVM_EXIT_EXCEPTION_24: case SVM_EXIT_EXCEPTION_25:
|
---|
5452 | case SVM_EXIT_EXCEPTION_26: case SVM_EXIT_EXCEPTION_27: case SVM_EXIT_EXCEPTION_28:
|
---|
5453 | case SVM_EXIT_EXCEPTION_29: case SVM_EXIT_EXCEPTION_30: case SVM_EXIT_EXCEPTION_31:
|
---|
5454 | return hmR0SvmExitXcptGeneric(pVCpu, pCtx, pSvmTransient);
|
---|
5455 | #endif /* HMSVM_ALWAYS_TRAP_ALL_XCPTS */
|
---|
5456 |
|
---|
5457 | default:
|
---|
5458 | {
|
---|
5459 | AssertMsgFailed(("hmR0SvmHandleExit: Unknown exit code %#RX64\n", uExitCode));
|
---|
5460 | pVCpu->hm.s.u32HMError = uExitCode;
|
---|
5461 | return VERR_SVM_UNKNOWN_EXIT;
|
---|
5462 | }
|
---|
5463 | }
|
---|
5464 | }
|
---|
5465 | }
|
---|
5466 | /* not reached */
|
---|
5467 | }
|
---|
5468 |
|
---|
5469 |
|
---|
5470 | #ifdef DEBUG
|
---|
5471 | /* Is there some generic IPRT define for this that are not in Runtime/internal/\* ?? */
|
---|
5472 | # define HMSVM_ASSERT_PREEMPT_CPUID_VAR() \
|
---|
5473 | RTCPUID const idAssertCpu = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId()
|
---|
5474 |
|
---|
5475 | # define HMSVM_ASSERT_PREEMPT_CPUID() \
|
---|
5476 | do \
|
---|
5477 | { \
|
---|
5478 | RTCPUID const idAssertCpuNow = RTThreadPreemptIsEnabled(NIL_RTTHREAD) ? NIL_RTCPUID : RTMpCpuId(); \
|
---|
5479 | AssertMsg(idAssertCpu == idAssertCpuNow, ("SVM %#x, %#x\n", idAssertCpu, idAssertCpuNow)); \
|
---|
5480 | } while (0)
|
---|
5481 |
|
---|
5482 | # define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() \
|
---|
5483 | do { \
|
---|
5484 | AssertPtr(pVCpu); \
|
---|
5485 | AssertPtr(pCtx); \
|
---|
5486 | AssertPtr(pSvmTransient); \
|
---|
5487 | Assert(ASMIntAreEnabled()); \
|
---|
5488 | HMSVM_ASSERT_PREEMPT_SAFE(); \
|
---|
5489 | HMSVM_ASSERT_PREEMPT_CPUID_VAR(); \
|
---|
5490 | Log4Func(("vcpu[%u] -v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-v-\n", (uint32_t)pVCpu->idCpu)); \
|
---|
5491 | HMSVM_ASSERT_PREEMPT_SAFE(); \
|
---|
5492 | if (VMMR0IsLogFlushDisabled(pVCpu)) \
|
---|
5493 | HMSVM_ASSERT_PREEMPT_CPUID(); \
|
---|
5494 | } while (0)
|
---|
5495 | #else /* Release builds */
|
---|
5496 | # define HMSVM_VALIDATE_EXIT_HANDLER_PARAMS() do { NOREF(pVCpu); NOREF(pCtx); NOREF(pSvmTransient); } while (0)
|
---|
5497 | #endif
|
---|
5498 |
|
---|
5499 |
|
---|
5500 | /**
|
---|
5501 | * Worker for hmR0SvmInterpretInvlpg().
|
---|
5502 | *
|
---|
5503 | * @return VBox status code.
|
---|
5504 | * @param pVCpu The cross context virtual CPU structure.
|
---|
5505 | * @param pCpu Pointer to the disassembler state.
|
---|
5506 | * @param pCtx The guest CPU context.
|
---|
5507 | */
|
---|
5508 | static int hmR0SvmInterpretInvlPgEx(PVMCPU pVCpu, PDISCPUSTATE pCpu, PCPUMCTX pCtx)
|
---|
5509 | {
|
---|
5510 | DISQPVPARAMVAL Param1;
|
---|
5511 | RTGCPTR GCPtrPage;
|
---|
5512 |
|
---|
5513 | int rc = DISQueryParamVal(CPUMCTX2CORE(pCtx), pCpu, &pCpu->Param1, &Param1, DISQPVWHICH_SRC);
|
---|
5514 | if (RT_FAILURE(rc))
|
---|
5515 | return VERR_EM_INTERPRETER;
|
---|
5516 |
|
---|
5517 | if ( Param1.type == DISQPV_TYPE_IMMEDIATE
|
---|
5518 | || Param1.type == DISQPV_TYPE_ADDRESS)
|
---|
5519 | {
|
---|
5520 | if (!(Param1.flags & (DISQPV_FLAG_32 | DISQPV_FLAG_64)))
|
---|
5521 | return VERR_EM_INTERPRETER;
|
---|
5522 |
|
---|
5523 | GCPtrPage = Param1.val.val64;
|
---|
5524 | VBOXSTRICTRC rc2 = EMInterpretInvlpg(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx), GCPtrPage);
|
---|
5525 | rc = VBOXSTRICTRC_VAL(rc2);
|
---|
5526 | }
|
---|
5527 | else
|
---|
5528 | {
|
---|
5529 | Log4(("hmR0SvmInterpretInvlPgEx invalid parameter type %#x\n", Param1.type));
|
---|
5530 | rc = VERR_EM_INTERPRETER;
|
---|
5531 | }
|
---|
5532 |
|
---|
5533 | return rc;
|
---|
5534 | }
|
---|
5535 |
|
---|
5536 |
|
---|
5537 | /**
|
---|
5538 | * Interprets INVLPG.
|
---|
5539 | *
|
---|
5540 | * @returns VBox status code.
|
---|
5541 | * @retval VINF_* Scheduling instructions.
|
---|
5542 | * @retval VERR_EM_INTERPRETER Something we can't cope with.
|
---|
5543 | * @retval VERR_* Fatal errors.
|
---|
5544 | *
|
---|
5545 | * @param pVM The cross context VM structure.
|
---|
5546 | * @param pVCpu The cross context virtual CPU structure.
|
---|
5547 | * @param pCtx The guest CPU context.
|
---|
5548 | *
|
---|
5549 | * @remarks Updates the RIP if the instruction was executed successfully.
|
---|
5550 | */
|
---|
5551 | static int hmR0SvmInterpretInvlpg(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
|
---|
5552 | {
|
---|
5553 | /* Only allow 32 & 64 bit code. */
|
---|
5554 | if (CPUMGetGuestCodeBits(pVCpu) != 16)
|
---|
5555 | {
|
---|
5556 | PDISSTATE pDis = &pVCpu->hm.s.DisState;
|
---|
5557 | int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL /* pcbInstr */);
|
---|
5558 | if ( RT_SUCCESS(rc)
|
---|
5559 | && pDis->pCurInstr->uOpcode == OP_INVLPG)
|
---|
5560 | {
|
---|
5561 | rc = hmR0SvmInterpretInvlPgEx(pVCpu, pDis, pCtx);
|
---|
5562 | if (RT_SUCCESS(rc))
|
---|
5563 | pCtx->rip += pDis->cbInstr;
|
---|
5564 | return rc;
|
---|
5565 | }
|
---|
5566 | else
|
---|
5567 | Log4(("hmR0SvmInterpretInvlpg: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
|
---|
5568 | }
|
---|
5569 | return VERR_EM_INTERPRETER;
|
---|
5570 | }
|
---|
5571 |
|
---|
5572 |
|
---|
5573 | #ifdef HMSVM_USE_IEM_EVENT_REFLECTION
|
---|
5574 | /**
|
---|
5575 | * Gets the IEM exception flags for the specified SVM event.
|
---|
5576 | *
|
---|
5577 | * @returns The IEM exception flags.
|
---|
5578 | * @param pEvent Pointer to the SVM event.
|
---|
5579 | *
|
---|
5580 | * @remarks This function currently only constructs flags required for
|
---|
5581 | * IEMEvaluateRecursiveXcpt and not the complete flags (e.g. error-code
|
---|
5582 | * and CR2 aspects of an exception are not included).
|
---|
5583 | */
|
---|
5584 | static uint32_t hmR0SvmGetIemXcptFlags(PCSVMEVENT pEvent)
|
---|
5585 | {
|
---|
5586 | uint8_t const uEventType = pEvent->n.u3Type;
|
---|
5587 | uint32_t fIemXcptFlags;
|
---|
5588 | switch (uEventType)
|
---|
5589 | {
|
---|
5590 | case SVM_EVENT_EXCEPTION:
|
---|
5591 | /*
|
---|
5592 | * Only INT3 and INTO instructions can raise #BP and #OF exceptions.
|
---|
5593 | * See AMD spec. Table 8-1. "Interrupt Vector Source and Cause".
|
---|
5594 | */
|
---|
5595 | if (pEvent->n.u8Vector == X86_XCPT_BP)
|
---|
5596 | {
|
---|
5597 | fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT | IEM_XCPT_FLAGS_BP_INSTR;
|
---|
5598 | break;
|
---|
5599 | }
|
---|
5600 | if (pEvent->n.u8Vector == X86_XCPT_OF)
|
---|
5601 | {
|
---|
5602 | fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT | IEM_XCPT_FLAGS_OF_INSTR;
|
---|
5603 | break;
|
---|
5604 | }
|
---|
5605 | /** @todo How do we distinguish ICEBP \#DB from the regular one? */
|
---|
5606 | RT_FALL_THRU();
|
---|
5607 | case SVM_EVENT_NMI:
|
---|
5608 | fIemXcptFlags = IEM_XCPT_FLAGS_T_CPU_XCPT;
|
---|
5609 | break;
|
---|
5610 |
|
---|
5611 | case SVM_EVENT_EXTERNAL_IRQ:
|
---|
5612 | fIemXcptFlags = IEM_XCPT_FLAGS_T_EXT_INT;
|
---|
5613 | break;
|
---|
5614 |
|
---|
5615 | case SVM_EVENT_SOFTWARE_INT:
|
---|
5616 | fIemXcptFlags = IEM_XCPT_FLAGS_T_SOFT_INT;
|
---|
5617 | break;
|
---|
5618 |
|
---|
5619 | default:
|
---|
5620 | fIemXcptFlags = 0;
|
---|
5621 | AssertMsgFailed(("Unexpected event type! uEventType=%#x uVector=%#x", uEventType, pEvent->n.u8Vector));
|
---|
5622 | break;
|
---|
5623 | }
|
---|
5624 | return fIemXcptFlags;
|
---|
5625 | }
|
---|
5626 |
|
---|
5627 | #else
|
---|
5628 | /**
|
---|
5629 | * Determines if an exception is a contributory exception.
|
---|
5630 | *
|
---|
5631 | * Contributory exceptions are ones which can cause double-faults unless the
|
---|
5632 | * original exception was a benign exception. Page-fault is intentionally not
|
---|
5633 | * included here as it's a conditional contributory exception.
|
---|
5634 | *
|
---|
5635 | * @returns @c true if the exception is contributory, @c false otherwise.
|
---|
5636 | * @param uVector The exception vector.
|
---|
5637 | */
|
---|
5638 | DECLINLINE(bool) hmR0SvmIsContributoryXcpt(const uint32_t uVector)
|
---|
5639 | {
|
---|
5640 | switch (uVector)
|
---|
5641 | {
|
---|
5642 | case X86_XCPT_GP:
|
---|
5643 | case X86_XCPT_SS:
|
---|
5644 | case X86_XCPT_NP:
|
---|
5645 | case X86_XCPT_TS:
|
---|
5646 | case X86_XCPT_DE:
|
---|
5647 | return true;
|
---|
5648 | default:
|
---|
5649 | break;
|
---|
5650 | }
|
---|
5651 | return false;
|
---|
5652 | }
|
---|
5653 | #endif /* HMSVM_USE_IEM_EVENT_REFLECTION */
|
---|
5654 |
|
---|
5655 |
|
---|
5656 | /**
|
---|
5657 | * Handle a condition that occurred while delivering an event through the guest
|
---|
5658 | * IDT.
|
---|
5659 | *
|
---|
5660 | * @returns VBox status code (informational error codes included).
|
---|
5661 | * @retval VINF_SUCCESS if we should continue handling the \#VMEXIT.
|
---|
5662 | * @retval VINF_HM_DOUBLE_FAULT if a \#DF condition was detected and we ought to
|
---|
5663 | * continue execution of the guest which will delivery the \#DF.
|
---|
5664 | * @retval VINF_EM_RESET if we detected a triple-fault condition.
|
---|
5665 | * @retval VERR_EM_GUEST_CPU_HANG if we detected a guest CPU hang.
|
---|
5666 | *
|
---|
5667 | * @param pVCpu The cross context virtual CPU structure.
|
---|
5668 | * @param pCtx Pointer to the guest-CPU context.
|
---|
5669 | * @param pSvmTransient Pointer to the SVM transient structure.
|
---|
5670 | *
|
---|
5671 | * @remarks No-long-jump zone!!!
|
---|
5672 | */
|
---|
5673 | static int hmR0SvmCheckExitDueToEventDelivery(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
5674 | {
|
---|
5675 | int rc = VINF_SUCCESS;
|
---|
5676 | PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
5677 |
|
---|
5678 | Log4(("EXITINTINFO: Pending vectoring event %#RX64 Valid=%RTbool ErrValid=%RTbool Err=%#RX32 Type=%u Vector=%u\n",
|
---|
5679 | pVmcb->ctrl.ExitIntInfo.u, !!pVmcb->ctrl.ExitIntInfo.n.u1Valid, !!pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid,
|
---|
5680 | pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode, pVmcb->ctrl.ExitIntInfo.n.u3Type, pVmcb->ctrl.ExitIntInfo.n.u8Vector));
|
---|
5681 |
|
---|
5682 | /* See AMD spec. 15.7.3 "EXITINFO Pseudo-Code". The EXITINTINFO (if valid) contains the prior exception (IDT vector)
|
---|
5683 | * that was trying to be delivered to the guest which caused a #VMEXIT which was intercepted (Exit vector). */
|
---|
5684 | if (pVmcb->ctrl.ExitIntInfo.n.u1Valid)
|
---|
5685 | {
|
---|
5686 | #ifdef HMSVM_USE_IEM_EVENT_REFLECTION
|
---|
5687 | IEMXCPTRAISE enmRaise;
|
---|
5688 | IEMXCPTRAISEINFO fRaiseInfo;
|
---|
5689 | bool const fExitIsHwXcpt = pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0 <= SVM_EXIT_EXCEPTION_31;
|
---|
5690 | uint8_t const uIdtVector = pVmcb->ctrl.ExitIntInfo.n.u8Vector;
|
---|
5691 | if (fExitIsHwXcpt)
|
---|
5692 | {
|
---|
5693 | uint8_t const uExitVector = pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0;
|
---|
5694 | uint32_t const fIdtVectorFlags = hmR0SvmGetIemXcptFlags(&pVmcb->ctrl.ExitIntInfo);
|
---|
5695 | uint32_t const fExitVectorFlags = IEM_XCPT_FLAGS_T_CPU_XCPT;
|
---|
5696 | enmRaise = IEMEvaluateRecursiveXcpt(pVCpu, fIdtVectorFlags, uIdtVector, fExitVectorFlags, uExitVector, &fRaiseInfo);
|
---|
5697 | }
|
---|
5698 | else
|
---|
5699 | {
|
---|
5700 | /*
|
---|
5701 | * If delivery of an event caused a #VMEXIT that is not an exception (e.g. #NPF) then we
|
---|
5702 | * end up here.
|
---|
5703 | *
|
---|
5704 | * If the event was:
|
---|
5705 | * - a software interrupt, we can re-execute the instruction which will regenerate
|
---|
5706 | * the event.
|
---|
5707 | * - an NMI, we need to clear NMI blocking and re-inject the NMI.
|
---|
5708 | * - a hardware exception or external interrupt, we re-inject it.
|
---|
5709 | */
|
---|
5710 | fRaiseInfo = IEMXCPTRAISEINFO_NONE;
|
---|
5711 | if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_SOFTWARE_INT)
|
---|
5712 | enmRaise = IEMXCPTRAISE_REEXEC_INSTR;
|
---|
5713 | else
|
---|
5714 | enmRaise = IEMXCPTRAISE_PREV_EVENT;
|
---|
5715 | }
|
---|
5716 |
|
---|
5717 | switch (enmRaise)
|
---|
5718 | {
|
---|
5719 | case IEMXCPTRAISE_CURRENT_XCPT:
|
---|
5720 | case IEMXCPTRAISE_PREV_EVENT:
|
---|
5721 | {
|
---|
5722 | /* For software interrupts, we shall re-execute the instruction. */
|
---|
5723 | if (!(fRaiseInfo & IEMXCPTRAISEINFO_SOFT_INT_XCPT))
|
---|
5724 | {
|
---|
5725 | RTGCUINTPTR GCPtrFaultAddress = 0;
|
---|
5726 |
|
---|
5727 | /* If we are re-injecting an NMI, clear NMI blocking. */
|
---|
5728 | if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI)
|
---|
5729 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
5730 |
|
---|
5731 | /* Determine a vectoring #PF condition, see comment in hmR0SvmExitXcptPF(). */
|
---|
5732 | if (fRaiseInfo & (IEMXCPTRAISEINFO_EXT_INT_PF | IEMXCPTRAISEINFO_NMI_PF))
|
---|
5733 | pSvmTransient->fVectoringPF = true;
|
---|
5734 | else if ( pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXCEPTION
|
---|
5735 | && uIdtVector == X86_XCPT_PF)
|
---|
5736 | {
|
---|
5737 | /*
|
---|
5738 | * If the previous exception was a #PF, we need to recover the CR2 value.
|
---|
5739 | * This can't happen with shadow paging.
|
---|
5740 | */
|
---|
5741 | GCPtrFaultAddress = pCtx->cr2;
|
---|
5742 | }
|
---|
5743 |
|
---|
5744 | /*
|
---|
5745 | * Without nested paging, when uExitVector is #PF, CR2 value will be updated from the VMCB's
|
---|
5746 | * exit info. fields, if it's a guest #PF, see hmR0SvmExitXcptPF().
|
---|
5747 | */
|
---|
5748 | Assert(pVmcb->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT);
|
---|
5749 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
|
---|
5750 | hmR0SvmSetPendingEvent(pVCpu, &pVmcb->ctrl.ExitIntInfo, GCPtrFaultAddress);
|
---|
5751 |
|
---|
5752 | Log4(("IDT: Pending vectoring event %#RX64 ErrValid=%RTbool Err=%#RX32 GCPtrFaultAddress=%#RX64\n",
|
---|
5753 | pVmcb->ctrl.ExitIntInfo.u, RT_BOOL(pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid),
|
---|
5754 | pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode, GCPtrFaultAddress));
|
---|
5755 | }
|
---|
5756 | break;
|
---|
5757 | }
|
---|
5758 |
|
---|
5759 | case IEMXCPTRAISE_REEXEC_INSTR:
|
---|
5760 | {
|
---|
5761 | Assert(rc == VINF_SUCCESS);
|
---|
5762 | break;
|
---|
5763 | }
|
---|
5764 |
|
---|
5765 | case IEMXCPTRAISE_DOUBLE_FAULT:
|
---|
5766 | {
|
---|
5767 | /*
|
---|
5768 | * Determing a vectoring double #PF condition. Used later, when PGM evaluates the
|
---|
5769 | * second #PF as a guest #PF (and not a shadow #PF) and needs to be converted into a #DF.
|
---|
5770 | */
|
---|
5771 | if (fRaiseInfo & IEMXCPTRAISEINFO_PF_PF)
|
---|
5772 | {
|
---|
5773 | pSvmTransient->fVectoringDoublePF = true;
|
---|
5774 | Assert(rc == VINF_SUCCESS);
|
---|
5775 | }
|
---|
5776 | else
|
---|
5777 | {
|
---|
5778 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
|
---|
5779 | hmR0SvmSetPendingXcptDF(pVCpu);
|
---|
5780 | rc = VINF_HM_DOUBLE_FAULT;
|
---|
5781 | }
|
---|
5782 | break;
|
---|
5783 | }
|
---|
5784 |
|
---|
5785 | case IEMXCPTRAISE_TRIPLE_FAULT:
|
---|
5786 | {
|
---|
5787 | rc = VINF_EM_RESET;
|
---|
5788 | break;
|
---|
5789 | }
|
---|
5790 |
|
---|
5791 | case IEMXCPTRAISE_CPU_HANG:
|
---|
5792 | {
|
---|
5793 | rc = VERR_EM_GUEST_CPU_HANG;
|
---|
5794 | break;
|
---|
5795 | }
|
---|
5796 |
|
---|
5797 | default:
|
---|
5798 | {
|
---|
5799 | AssertMsgFailed(("hmR0SvmExitCpuid: EMInterpretCpuId failed with %Rrc\n", rc));
|
---|
5800 | rc = VERR_SVM_IPE_2;
|
---|
5801 | break;
|
---|
5802 | }
|
---|
5803 | }
|
---|
5804 | #else
|
---|
5805 | uint8_t uIdtVector = pVmcb->ctrl.ExitIntInfo.n.u8Vector;
|
---|
5806 |
|
---|
5807 | typedef enum
|
---|
5808 | {
|
---|
5809 | SVMREFLECTXCPT_XCPT, /* Reflect the exception to the guest or for further evaluation by VMM. */
|
---|
5810 | SVMREFLECTXCPT_DF, /* Reflect the exception as a double-fault to the guest. */
|
---|
5811 | SVMREFLECTXCPT_TF, /* Indicate a triple faulted state to the VMM. */
|
---|
5812 | SVMREFLECTXCPT_HANG, /* Indicate bad VM trying to deadlock the CPU. */
|
---|
5813 | SVMREFLECTXCPT_NONE /* Nothing to reflect. */
|
---|
5814 | } SVMREFLECTXCPT;
|
---|
5815 |
|
---|
5816 | SVMREFLECTXCPT enmReflect = SVMREFLECTXCPT_NONE;
|
---|
5817 | bool fReflectingNmi = false;
|
---|
5818 | if (pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXCEPTION)
|
---|
5819 | {
|
---|
5820 | if (pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0 <= SVM_EXIT_EXCEPTION_31)
|
---|
5821 | {
|
---|
5822 | uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0);
|
---|
5823 |
|
---|
5824 | #ifdef VBOX_STRICT
|
---|
5825 | if ( hmR0SvmIsContributoryXcpt(uIdtVector)
|
---|
5826 | && uExitVector == X86_XCPT_PF)
|
---|
5827 | {
|
---|
5828 | Log4(("IDT: Contributory #PF idCpu=%u uCR2=%#RX64\n", pVCpu->idCpu, pCtx->cr2));
|
---|
5829 | }
|
---|
5830 | #endif
|
---|
5831 |
|
---|
5832 | if ( uIdtVector == X86_XCPT_BP
|
---|
5833 | || uIdtVector == X86_XCPT_OF)
|
---|
5834 | {
|
---|
5835 | /* Ignore INT3/INTO, just re-execute. See @bugref{8357}. */
|
---|
5836 | }
|
---|
5837 | else if ( uExitVector == X86_XCPT_PF
|
---|
5838 | && uIdtVector == X86_XCPT_PF)
|
---|
5839 | {
|
---|
5840 | pSvmTransient->fVectoringDoublePF = true;
|
---|
5841 | Log4(("IDT: Vectoring double #PF uCR2=%#RX64\n", pCtx->cr2));
|
---|
5842 | }
|
---|
5843 | else if ( uExitVector == X86_XCPT_AC
|
---|
5844 | && uIdtVector == X86_XCPT_AC)
|
---|
5845 | {
|
---|
5846 | enmReflect = SVMREFLECTXCPT_HANG;
|
---|
5847 | Log4(("IDT: Nested #AC - Bad guest\n"));
|
---|
5848 | }
|
---|
5849 | else if ( (pVmcb->ctrl.u32InterceptXcpt & HMSVM_CONTRIBUTORY_XCPT_MASK)
|
---|
5850 | && hmR0SvmIsContributoryXcpt(uExitVector)
|
---|
5851 | && ( hmR0SvmIsContributoryXcpt(uIdtVector)
|
---|
5852 | || uIdtVector == X86_XCPT_PF))
|
---|
5853 | {
|
---|
5854 | enmReflect = SVMREFLECTXCPT_DF;
|
---|
5855 | Log4(("IDT: Pending vectoring #DF %#RX64 uIdtVector=%#x uExitVector=%#x\n", pVCpu->hm.s.Event.u64IntInfo,
|
---|
5856 | uIdtVector, uExitVector));
|
---|
5857 | }
|
---|
5858 | else if (uIdtVector == X86_XCPT_DF)
|
---|
5859 | {
|
---|
5860 | enmReflect = SVMREFLECTXCPT_TF;
|
---|
5861 | Log4(("IDT: Pending vectoring triple-fault %#RX64 uIdtVector=%#x uExitVector=%#x\n",
|
---|
5862 | pVCpu->hm.s.Event.u64IntInfo, uIdtVector, uExitVector));
|
---|
5863 | }
|
---|
5864 | else
|
---|
5865 | enmReflect = SVMREFLECTXCPT_XCPT;
|
---|
5866 | }
|
---|
5867 | else
|
---|
5868 | {
|
---|
5869 | /*
|
---|
5870 | * If event delivery caused an #VMEXIT that is not an exception (e.g. #NPF) then reflect the original
|
---|
5871 | * exception to the guest after handling the #VMEXIT.
|
---|
5872 | */
|
---|
5873 | enmReflect = SVMREFLECTXCPT_XCPT;
|
---|
5874 | }
|
---|
5875 | }
|
---|
5876 | else if ( pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_EXTERNAL_IRQ
|
---|
5877 | || pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI)
|
---|
5878 | {
|
---|
5879 | enmReflect = SVMREFLECTXCPT_XCPT;
|
---|
5880 | fReflectingNmi = RT_BOOL(pVmcb->ctrl.ExitIntInfo.n.u3Type == SVM_EVENT_NMI);
|
---|
5881 |
|
---|
5882 | if (pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0 <= SVM_EXIT_EXCEPTION_31)
|
---|
5883 | {
|
---|
5884 | uint8_t uExitVector = (uint8_t)(pSvmTransient->u64ExitCode - SVM_EXIT_EXCEPTION_0);
|
---|
5885 | if (uExitVector == X86_XCPT_PF)
|
---|
5886 | {
|
---|
5887 | pSvmTransient->fVectoringPF = true;
|
---|
5888 | Log4(("IDT: Vectoring #PF due to Ext-Int/NMI. uCR2=%#RX64\n", pCtx->cr2));
|
---|
5889 | }
|
---|
5890 | }
|
---|
5891 | }
|
---|
5892 | /* else: Ignore software interrupts (INT n) as they reoccur when restarting the instruction. */
|
---|
5893 |
|
---|
5894 | switch (enmReflect)
|
---|
5895 | {
|
---|
5896 | case SVMREFLECTXCPT_XCPT:
|
---|
5897 | {
|
---|
5898 | /* If we are re-injecting the NMI, clear NMI blocking. */
|
---|
5899 | if (fReflectingNmi)
|
---|
5900 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
5901 |
|
---|
5902 | Assert(pVmcb->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT);
|
---|
5903 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
|
---|
5904 | hmR0SvmSetPendingEvent(pVCpu, &pVmcb->ctrl.ExitIntInfo, 0 /* GCPtrFaultAddress */);
|
---|
5905 |
|
---|
5906 | /* If uExitVector is #PF, CR2 value will be updated from the VMCB if it's a guest #PF. See hmR0SvmExitXcptPF(). */
|
---|
5907 | Log4(("IDT: Pending vectoring event %#RX64 ErrValid=%RTbool Err=%#RX32\n", pVmcb->ctrl.ExitIntInfo.u,
|
---|
5908 | !!pVmcb->ctrl.ExitIntInfo.n.u1ErrorCodeValid, pVmcb->ctrl.ExitIntInfo.n.u32ErrorCode));
|
---|
5909 | break;
|
---|
5910 | }
|
---|
5911 |
|
---|
5912 | case SVMREFLECTXCPT_DF:
|
---|
5913 | {
|
---|
5914 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingReflect);
|
---|
5915 | hmR0SvmSetPendingXcptDF(pVCpu);
|
---|
5916 | rc = VINF_HM_DOUBLE_FAULT;
|
---|
5917 | break;
|
---|
5918 | }
|
---|
5919 |
|
---|
5920 | case SVMREFLECTXCPT_TF:
|
---|
5921 | {
|
---|
5922 | rc = VINF_EM_RESET;
|
---|
5923 | break;
|
---|
5924 | }
|
---|
5925 |
|
---|
5926 | case SVMREFLECTXCPT_HANG:
|
---|
5927 | {
|
---|
5928 | rc = VERR_EM_GUEST_CPU_HANG;
|
---|
5929 | break;
|
---|
5930 | }
|
---|
5931 |
|
---|
5932 | default:
|
---|
5933 | Assert(rc == VINF_SUCCESS);
|
---|
5934 | break;
|
---|
5935 | }
|
---|
5936 | #endif /* HMSVM_USE_IEM_EVENT_REFLECTION */
|
---|
5937 | }
|
---|
5938 | Assert(rc == VINF_SUCCESS || rc == VINF_HM_DOUBLE_FAULT || rc == VINF_EM_RESET || rc == VERR_EM_GUEST_CPU_HANG);
|
---|
5939 | NOREF(pCtx);
|
---|
5940 | return rc;
|
---|
5941 | }
|
---|
5942 |
|
---|
5943 |
|
---|
5944 | /**
|
---|
5945 | * Advances the guest RIP making use of the CPU's NRIP_SAVE feature if
|
---|
5946 | * supported, otherwise advances the RIP by the number of bytes specified in
|
---|
5947 | * @a cb.
|
---|
5948 | *
|
---|
5949 | * @param pVCpu The cross context virtual CPU structure.
|
---|
5950 | * @param pCtx Pointer to the guest-CPU context.
|
---|
5951 | * @param cb RIP increment value in bytes.
|
---|
5952 | *
|
---|
5953 | * @remarks Use this function only from \#VMEXIT's where the NRIP value is valid
|
---|
5954 | * when NRIP_SAVE is supported by the CPU, otherwise use
|
---|
5955 | * hmR0SvmAdvanceRipDumb!
|
---|
5956 | */
|
---|
5957 | DECLINLINE(void) hmR0SvmAdvanceRipHwAssist(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t cb)
|
---|
5958 | {
|
---|
5959 | bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
|
---|
5960 | if (fSupportsNextRipSave)
|
---|
5961 | {
|
---|
5962 | PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
5963 | Assert(pVmcb->ctrl.u64NextRIP);
|
---|
5964 | AssertRelease(pVmcb->ctrl.u64NextRIP - pCtx->rip == cb); /* temporary, remove later */
|
---|
5965 | pCtx->rip = pVmcb->ctrl.u64NextRIP;
|
---|
5966 | }
|
---|
5967 | else
|
---|
5968 | pCtx->rip += cb;
|
---|
5969 |
|
---|
5970 | HMSVM_UPDATE_INTR_SHADOW(pVCpu, pCtx);
|
---|
5971 | }
|
---|
5972 |
|
---|
5973 |
|
---|
5974 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
5975 | /**
|
---|
5976 | * Gets the length of the current instruction if the CPU supports the NRIP_SAVE
|
---|
5977 | * feature. Otherwise, returns the value in @a cbLikely.
|
---|
5978 | *
|
---|
5979 | * @param pVCpu The cross context virtual CPU structure.
|
---|
5980 | * @param pCtx Pointer to the guest-CPU context.
|
---|
5981 | * @param cbLikely The likely instruction length.
|
---|
5982 | */
|
---|
5983 | DECLINLINE(uint8_t) hmR0SvmGetInstrLengthHwAssist(PVMCPU pVCpu, PCPUMCTX pCtx, uint8_t cbLikely)
|
---|
5984 | {
|
---|
5985 | Assert(cbLikely <= 15); /* See Intel spec. 2.3.11 "AVX Instruction Length" */
|
---|
5986 | bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
|
---|
5987 | if (fSupportsNextRipSave)
|
---|
5988 | {
|
---|
5989 | PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
5990 | uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
|
---|
5991 | Assert(cbInstr == cbLikely);
|
---|
5992 | return cbInstr;
|
---|
5993 | }
|
---|
5994 | return cbLikely;
|
---|
5995 | }
|
---|
5996 | #endif
|
---|
5997 |
|
---|
5998 |
|
---|
5999 | /**
|
---|
6000 | * Advances the guest RIP by the number of bytes specified in @a cb. This does
|
---|
6001 | * not make use of any hardware features to determine the instruction length.
|
---|
6002 | *
|
---|
6003 | * @param pVCpu The cross context virtual CPU structure.
|
---|
6004 | * @param pCtx Pointer to the guest-CPU context.
|
---|
6005 | * @param cb RIP increment value in bytes.
|
---|
6006 | */
|
---|
6007 | DECLINLINE(void) hmR0SvmAdvanceRipDumb(PVMCPU pVCpu, PCPUMCTX pCtx, uint32_t cb)
|
---|
6008 | {
|
---|
6009 | pCtx->rip += cb;
|
---|
6010 | HMSVM_UPDATE_INTR_SHADOW(pVCpu, pCtx);
|
---|
6011 | }
|
---|
6012 | #undef HMSVM_UPDATE_INTR_SHADOW
|
---|
6013 |
|
---|
6014 |
|
---|
6015 | /* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
|
---|
6016 | /* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- #VMEXIT handlers -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- */
|
---|
6017 | /* -=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
|
---|
6018 |
|
---|
6019 | /** @name \#VMEXIT handlers.
|
---|
6020 | * @{
|
---|
6021 | */
|
---|
6022 |
|
---|
6023 | /**
|
---|
6024 | * \#VMEXIT handler for external interrupts, NMIs, FPU assertion freeze and INIT
|
---|
6025 | * signals (SVM_EXIT_INTR, SVM_EXIT_NMI, SVM_EXIT_FERR_FREEZE, SVM_EXIT_INIT).
|
---|
6026 | */
|
---|
6027 | HMSVM_EXIT_DECL hmR0SvmExitIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6028 | {
|
---|
6029 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6030 |
|
---|
6031 | if (pSvmTransient->u64ExitCode == SVM_EXIT_NMI)
|
---|
6032 | STAM_REL_COUNTER_INC(&pVCpu->hm.s.StatExitHostNmiInGC);
|
---|
6033 | else if (pSvmTransient->u64ExitCode == SVM_EXIT_INTR)
|
---|
6034 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitExtInt);
|
---|
6035 |
|
---|
6036 | /*
|
---|
6037 | * AMD-V has no preemption timer and the generic periodic preemption timer has no way to signal -before- the timer
|
---|
6038 | * fires if the current interrupt is our own timer or a some other host interrupt. We also cannot examine what
|
---|
6039 | * interrupt it is until the host actually take the interrupt.
|
---|
6040 | *
|
---|
6041 | * Going back to executing guest code here unconditionally causes random scheduling problems (observed on an
|
---|
6042 | * AMD Phenom 9850 Quad-Core on Windows 64-bit host).
|
---|
6043 | */
|
---|
6044 | return VINF_EM_RAW_INTERRUPT;
|
---|
6045 | }
|
---|
6046 |
|
---|
6047 |
|
---|
6048 | /**
|
---|
6049 | * \#VMEXIT handler for WBINVD (SVM_EXIT_WBINVD). Conditional \#VMEXIT.
|
---|
6050 | */
|
---|
6051 | HMSVM_EXIT_DECL hmR0SvmExitWbinvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6052 | {
|
---|
6053 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6054 |
|
---|
6055 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
|
---|
6056 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWbinvd);
|
---|
6057 | int rc = VINF_SUCCESS;
|
---|
6058 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6059 | return rc;
|
---|
6060 | }
|
---|
6061 |
|
---|
6062 |
|
---|
6063 | /**
|
---|
6064 | * \#VMEXIT handler for INVD (SVM_EXIT_INVD). Unconditional \#VMEXIT.
|
---|
6065 | */
|
---|
6066 | HMSVM_EXIT_DECL hmR0SvmExitInvd(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6067 | {
|
---|
6068 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6069 |
|
---|
6070 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
|
---|
6071 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvd);
|
---|
6072 | int rc = VINF_SUCCESS;
|
---|
6073 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6074 | return rc;
|
---|
6075 | }
|
---|
6076 |
|
---|
6077 |
|
---|
6078 | /**
|
---|
6079 | * \#VMEXIT handler for INVD (SVM_EXIT_CPUID). Conditional \#VMEXIT.
|
---|
6080 | */
|
---|
6081 | HMSVM_EXIT_DECL hmR0SvmExitCpuid(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6082 | {
|
---|
6083 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6084 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
6085 | int rc = EMInterpretCpuId(pVM, pVCpu, CPUMCTX2CORE(pCtx));
|
---|
6086 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
6087 | {
|
---|
6088 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
|
---|
6089 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6090 | }
|
---|
6091 | else
|
---|
6092 | {
|
---|
6093 | AssertMsgFailed(("hmR0SvmExitCpuid: EMInterpretCpuId failed with %Rrc\n", rc));
|
---|
6094 | rc = VERR_EM_INTERPRETER;
|
---|
6095 | }
|
---|
6096 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCpuid);
|
---|
6097 | return rc;
|
---|
6098 | }
|
---|
6099 |
|
---|
6100 |
|
---|
6101 | /**
|
---|
6102 | * \#VMEXIT handler for RDTSC (SVM_EXIT_RDTSC). Conditional \#VMEXIT.
|
---|
6103 | */
|
---|
6104 | HMSVM_EXIT_DECL hmR0SvmExitRdtsc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6105 | {
|
---|
6106 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6107 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
6108 | int rc = EMInterpretRdtsc(pVM, pVCpu, CPUMCTX2CORE(pCtx));
|
---|
6109 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
6110 | {
|
---|
6111 | pSvmTransient->fUpdateTscOffsetting = true;
|
---|
6112 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
|
---|
6113 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6114 | }
|
---|
6115 | else
|
---|
6116 | {
|
---|
6117 | AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtsc failed with %Rrc\n", rc));
|
---|
6118 | rc = VERR_EM_INTERPRETER;
|
---|
6119 | }
|
---|
6120 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtsc);
|
---|
6121 | return rc;
|
---|
6122 | }
|
---|
6123 |
|
---|
6124 |
|
---|
6125 | /**
|
---|
6126 | * \#VMEXIT handler for RDTSCP (SVM_EXIT_RDTSCP). Conditional \#VMEXIT.
|
---|
6127 | */
|
---|
6128 | HMSVM_EXIT_DECL hmR0SvmExitRdtscp(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6129 | {
|
---|
6130 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6131 | int rc = EMInterpretRdtscp(pVCpu->CTX_SUFF(pVM), pVCpu, pCtx);
|
---|
6132 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
6133 | {
|
---|
6134 | pSvmTransient->fUpdateTscOffsetting = true;
|
---|
6135 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3);
|
---|
6136 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6137 | }
|
---|
6138 | else
|
---|
6139 | {
|
---|
6140 | AssertMsgFailed(("hmR0SvmExitRdtsc: EMInterpretRdtscp failed with %Rrc\n", rc));
|
---|
6141 | rc = VERR_EM_INTERPRETER;
|
---|
6142 | }
|
---|
6143 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdtscp);
|
---|
6144 | return rc;
|
---|
6145 | }
|
---|
6146 |
|
---|
6147 |
|
---|
6148 | /**
|
---|
6149 | * \#VMEXIT handler for RDPMC (SVM_EXIT_RDPMC). Conditional \#VMEXIT.
|
---|
6150 | */
|
---|
6151 | HMSVM_EXIT_DECL hmR0SvmExitRdpmc(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6152 | {
|
---|
6153 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6154 | int rc = EMInterpretRdpmc(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
|
---|
6155 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
6156 | {
|
---|
6157 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
|
---|
6158 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6159 | }
|
---|
6160 | else
|
---|
6161 | {
|
---|
6162 | AssertMsgFailed(("hmR0SvmExitRdpmc: EMInterpretRdpmc failed with %Rrc\n", rc));
|
---|
6163 | rc = VERR_EM_INTERPRETER;
|
---|
6164 | }
|
---|
6165 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdpmc);
|
---|
6166 | return rc;
|
---|
6167 | }
|
---|
6168 |
|
---|
6169 |
|
---|
6170 | /**
|
---|
6171 | * \#VMEXIT handler for INVLPG (SVM_EXIT_INVLPG). Conditional \#VMEXIT.
|
---|
6172 | */
|
---|
6173 | HMSVM_EXIT_DECL hmR0SvmExitInvlpg(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6174 | {
|
---|
6175 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6176 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
6177 | Assert(!pVM->hm.s.fNestedPaging);
|
---|
6178 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvlpg);
|
---|
6179 |
|
---|
6180 | bool const fSupportsDecodeAssists = hmR0SvmSupportsDecodeAssists(pVCpu, pCtx);
|
---|
6181 | bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
|
---|
6182 | if ( fSupportsDecodeAssists
|
---|
6183 | && fSupportsNextRipSave)
|
---|
6184 | {
|
---|
6185 | PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
6186 | uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
|
---|
6187 | RTGCPTR const GCPtrPage = pVmcb->ctrl.u64ExitInfo1;
|
---|
6188 | VBOXSTRICTRC rcStrict = IEMExecDecodedInvlpg(pVCpu, cbInstr, GCPtrPage);
|
---|
6189 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
|
---|
6190 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
6191 | }
|
---|
6192 |
|
---|
6193 | int rc = hmR0SvmInterpretInvlpg(pVM, pVCpu, pCtx); /* Updates RIP if successful. */
|
---|
6194 | Assert(rc == VINF_SUCCESS || rc == VERR_EM_INTERPRETER);
|
---|
6195 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6196 | return rc;
|
---|
6197 | }
|
---|
6198 |
|
---|
6199 |
|
---|
6200 | /**
|
---|
6201 | * \#VMEXIT handler for HLT (SVM_EXIT_HLT). Conditional \#VMEXIT.
|
---|
6202 | */
|
---|
6203 | HMSVM_EXIT_DECL hmR0SvmExitHlt(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6204 | {
|
---|
6205 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6206 |
|
---|
6207 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 1);
|
---|
6208 | int rc = EMShouldContinueAfterHalt(pVCpu, pCtx) ? VINF_SUCCESS : VINF_EM_HALT;
|
---|
6209 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6210 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitHlt);
|
---|
6211 | if (rc != VINF_SUCCESS)
|
---|
6212 | STAM_COUNTER_INC(&pVCpu->hm.s.StatSwitchHltToR3);
|
---|
6213 | return rc;
|
---|
6214 | }
|
---|
6215 |
|
---|
6216 |
|
---|
6217 | /**
|
---|
6218 | * \#VMEXIT handler for MONITOR (SVM_EXIT_MONITOR). Conditional \#VMEXIT.
|
---|
6219 | */
|
---|
6220 | HMSVM_EXIT_DECL hmR0SvmExitMonitor(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6221 | {
|
---|
6222 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6223 | int rc = EMInterpretMonitor(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
|
---|
6224 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
6225 | {
|
---|
6226 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3);
|
---|
6227 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6228 | }
|
---|
6229 | else
|
---|
6230 | {
|
---|
6231 | AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMonitor: EMInterpretMonitor failed with %Rrc\n", rc));
|
---|
6232 | rc = VERR_EM_INTERPRETER;
|
---|
6233 | }
|
---|
6234 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMonitor);
|
---|
6235 | return rc;
|
---|
6236 | }
|
---|
6237 |
|
---|
6238 |
|
---|
6239 | /**
|
---|
6240 | * \#VMEXIT handler for MWAIT (SVM_EXIT_MWAIT). Conditional \#VMEXIT.
|
---|
6241 | */
|
---|
6242 | HMSVM_EXIT_DECL hmR0SvmExitMwait(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6243 | {
|
---|
6244 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6245 | VBOXSTRICTRC rc2 = EMInterpretMWait(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
|
---|
6246 | int rc = VBOXSTRICTRC_VAL(rc2);
|
---|
6247 | if ( rc == VINF_EM_HALT
|
---|
6248 | || rc == VINF_SUCCESS)
|
---|
6249 | {
|
---|
6250 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3);
|
---|
6251 |
|
---|
6252 | if ( rc == VINF_EM_HALT
|
---|
6253 | && EMMonitorWaitShouldContinue(pVCpu, pCtx))
|
---|
6254 | {
|
---|
6255 | rc = VINF_SUCCESS;
|
---|
6256 | }
|
---|
6257 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6258 | }
|
---|
6259 | else
|
---|
6260 | {
|
---|
6261 | AssertMsg(rc == VERR_EM_INTERPRETER, ("hmR0SvmExitMwait: EMInterpretMWait failed with %Rrc\n", rc));
|
---|
6262 | rc = VERR_EM_INTERPRETER;
|
---|
6263 | }
|
---|
6264 | AssertMsg(rc == VINF_SUCCESS || rc == VINF_EM_HALT || rc == VERR_EM_INTERPRETER,
|
---|
6265 | ("hmR0SvmExitMwait: EMInterpretMWait failed rc=%Rrc\n", rc));
|
---|
6266 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitMwait);
|
---|
6267 | return rc;
|
---|
6268 | }
|
---|
6269 |
|
---|
6270 |
|
---|
6271 | /**
|
---|
6272 | * \#VMEXIT handler for shutdown (triple-fault) (SVM_EXIT_SHUTDOWN). Conditional
|
---|
6273 | * \#VMEXIT.
|
---|
6274 | */
|
---|
6275 | HMSVM_EXIT_DECL hmR0SvmExitShutdown(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6276 | {
|
---|
6277 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6278 | return VINF_EM_RESET;
|
---|
6279 | }
|
---|
6280 |
|
---|
6281 |
|
---|
6282 | /**
|
---|
6283 | * \#VMEXIT handler for unexpected exits. Conditional \#VMEXIT.
|
---|
6284 | */
|
---|
6285 | HMSVM_EXIT_DECL hmR0SvmExitUnexpected(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6286 | {
|
---|
6287 | RT_NOREF(pCtx);
|
---|
6288 | AssertMsgFailed(("hmR0SvmExitUnexpected: ExitCode=%#RX64\n", pSvmTransient->u64ExitCode));
|
---|
6289 | pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
|
---|
6290 | return VERR_SVM_UNEXPECTED_EXIT;
|
---|
6291 | }
|
---|
6292 |
|
---|
6293 |
|
---|
6294 | /**
|
---|
6295 | * \#VMEXIT handler for CRx reads (SVM_EXIT_READ_CR*). Conditional \#VMEXIT.
|
---|
6296 | */
|
---|
6297 | HMSVM_EXIT_DECL hmR0SvmExitReadCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6298 | {
|
---|
6299 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6300 |
|
---|
6301 | Log4(("hmR0SvmExitReadCRx: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
|
---|
6302 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitCRxRead[pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0]);
|
---|
6303 |
|
---|
6304 | bool const fSupportsDecodeAssists = hmR0SvmSupportsDecodeAssists(pVCpu, pCtx);
|
---|
6305 | bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
|
---|
6306 | if ( fSupportsDecodeAssists
|
---|
6307 | && fSupportsNextRipSave)
|
---|
6308 | {
|
---|
6309 | PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
6310 | bool const fMovCRx = RT_BOOL(pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_MASK);
|
---|
6311 | if (fMovCRx)
|
---|
6312 | {
|
---|
6313 | uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
|
---|
6314 | uint8_t const iCrReg = pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0;
|
---|
6315 | uint8_t const iGReg = pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_GPR_NUMBER;
|
---|
6316 | VBOXSTRICTRC rcStrict = IEMExecDecodedMovCRxRead(pVCpu, cbInstr, iGReg, iCrReg);
|
---|
6317 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
|
---|
6318 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
6319 | }
|
---|
6320 | /* else: SMSW instruction, fall back below to IEM for this. */
|
---|
6321 | }
|
---|
6322 |
|
---|
6323 | VBOXSTRICTRC rc2 = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
|
---|
6324 | int rc = VBOXSTRICTRC_VAL(rc2);
|
---|
6325 | AssertMsg(rc == VINF_SUCCESS || rc == VERR_EM_INTERPRETER || rc == VINF_PGM_CHANGE_MODE || rc == VINF_PGM_SYNC_CR3,
|
---|
6326 | ("hmR0SvmExitReadCRx: EMInterpretInstruction failed rc=%Rrc\n", rc));
|
---|
6327 | Assert((pSvmTransient->u64ExitCode - SVM_EXIT_READ_CR0) <= 15);
|
---|
6328 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6329 | return rc;
|
---|
6330 | }
|
---|
6331 |
|
---|
6332 |
|
---|
6333 | /**
|
---|
6334 | * \#VMEXIT handler for CRx writes (SVM_EXIT_WRITE_CR*). Conditional \#VMEXIT.
|
---|
6335 | */
|
---|
6336 | HMSVM_EXIT_DECL hmR0SvmExitWriteCRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6337 | {
|
---|
6338 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6339 |
|
---|
6340 | uint8_t const iCrReg = pSvmTransient->u64ExitCode - SVM_EXIT_WRITE_CR0;
|
---|
6341 | Assert(iCrReg <= 15);
|
---|
6342 |
|
---|
6343 | VBOXSTRICTRC rcStrict = VERR_SVM_IPE_5;
|
---|
6344 | bool fDecodedInstr = false;
|
---|
6345 | bool const fSupportsDecodeAssists = hmR0SvmSupportsDecodeAssists(pVCpu, pCtx);
|
---|
6346 | bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
|
---|
6347 | if ( fSupportsDecodeAssists
|
---|
6348 | && fSupportsNextRipSave)
|
---|
6349 | {
|
---|
6350 | PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
6351 | bool const fMovCRx = RT_BOOL(pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_MASK);
|
---|
6352 | if (fMovCRx)
|
---|
6353 | {
|
---|
6354 | uint8_t const cbInstr = pVmcb->ctrl.u64NextRIP - pCtx->rip;
|
---|
6355 | uint8_t const iGReg = pVmcb->ctrl.u64ExitInfo1 & SVM_EXIT1_MOV_CRX_GPR_NUMBER;
|
---|
6356 | Log4(("hmR0SvmExitWriteCRx: Mov CR%u w/ iGReg=%#x\n", iCrReg, iGReg));
|
---|
6357 | rcStrict = IEMExecDecodedMovCRxWrite(pVCpu, cbInstr, iCrReg, iGReg);
|
---|
6358 | fDecodedInstr = true;
|
---|
6359 | }
|
---|
6360 | /* else: LMSW or CLTS instruction, fall back below to IEM for this. */
|
---|
6361 | }
|
---|
6362 |
|
---|
6363 | if (!fDecodedInstr)
|
---|
6364 | {
|
---|
6365 | Log4(("hmR0SvmExitWriteCRx: iCrReg=%#x\n", iCrReg));
|
---|
6366 | rcStrict = IEMExecOneBypassEx(pVCpu, CPUMCTX2CORE(pCtx), NULL);
|
---|
6367 | if (RT_UNLIKELY( rcStrict == VERR_IEM_ASPECT_NOT_IMPLEMENTED
|
---|
6368 | || rcStrict == VERR_IEM_INSTR_NOT_IMPLEMENTED))
|
---|
6369 | rcStrict = VERR_EM_INTERPRETER;
|
---|
6370 | }
|
---|
6371 |
|
---|
6372 | if (rcStrict == VINF_SUCCESS)
|
---|
6373 | {
|
---|
6374 | switch (iCrReg)
|
---|
6375 | {
|
---|
6376 | case 0: /* CR0. */
|
---|
6377 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
6378 | break;
|
---|
6379 |
|
---|
6380 | case 3: /* CR3. */
|
---|
6381 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR3);
|
---|
6382 | break;
|
---|
6383 |
|
---|
6384 | case 4: /* CR4. */
|
---|
6385 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR4);
|
---|
6386 | break;
|
---|
6387 |
|
---|
6388 | case 8: /* CR8 (TPR). */
|
---|
6389 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
6390 | break;
|
---|
6391 |
|
---|
6392 | default:
|
---|
6393 | AssertMsgFailed(("hmR0SvmExitWriteCRx: Invalid/Unexpected Write-CRx exit. u64ExitCode=%#RX64 %#x\n",
|
---|
6394 | pSvmTransient->u64ExitCode, iCrReg));
|
---|
6395 | break;
|
---|
6396 | }
|
---|
6397 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
|
---|
6398 | }
|
---|
6399 | else
|
---|
6400 | Assert(rcStrict == VERR_EM_INTERPRETER || rcStrict == VINF_PGM_CHANGE_MODE || rcStrict == VINF_PGM_SYNC_CR3);
|
---|
6401 | return VBOXSTRICTRC_TODO(rcStrict);
|
---|
6402 | }
|
---|
6403 |
|
---|
6404 |
|
---|
6405 | /**
|
---|
6406 | * \#VMEXIT handler for MSR read and writes (SVM_EXIT_MSR). Conditional
|
---|
6407 | * \#VMEXIT.
|
---|
6408 | */
|
---|
6409 | HMSVM_EXIT_DECL hmR0SvmExitMsr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6410 | {
|
---|
6411 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6412 | PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
6413 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
6414 |
|
---|
6415 | int rc;
|
---|
6416 | if (pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_WRITE)
|
---|
6417 | {
|
---|
6418 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitWrmsr);
|
---|
6419 | Log4(("MSR Write: idMsr=%#RX32\n", pCtx->ecx));
|
---|
6420 |
|
---|
6421 | /* Handle TPR patching; intercepted LSTAR write. */
|
---|
6422 | if ( pVM->hm.s.fTPRPatchingActive
|
---|
6423 | && pCtx->ecx == MSR_K8_LSTAR)
|
---|
6424 | {
|
---|
6425 | if ((pCtx->eax & 0xff) != pSvmTransient->u8GuestTpr)
|
---|
6426 | {
|
---|
6427 | /* Our patch code uses LSTAR for TPR caching for 32-bit guests. */
|
---|
6428 | int rc2 = APICSetTpr(pVCpu, pCtx->eax & 0xff);
|
---|
6429 | AssertRC(rc2);
|
---|
6430 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
6431 | }
|
---|
6432 | rc = VINF_SUCCESS;
|
---|
6433 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 2);
|
---|
6434 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6435 | return rc;
|
---|
6436 | }
|
---|
6437 |
|
---|
6438 | bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
|
---|
6439 | if (fSupportsNextRipSave)
|
---|
6440 | {
|
---|
6441 | rc = EMInterpretWrmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
|
---|
6442 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
6443 | {
|
---|
6444 | pCtx->rip = pVmcb->ctrl.u64NextRIP;
|
---|
6445 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6446 | }
|
---|
6447 | else
|
---|
6448 | AssertMsg( rc == VERR_EM_INTERPRETER
|
---|
6449 | || rc == VINF_CPUM_R3_MSR_WRITE, ("hmR0SvmExitMsr: EMInterpretWrmsr failed rc=%Rrc\n", rc));
|
---|
6450 | }
|
---|
6451 | else
|
---|
6452 | {
|
---|
6453 | rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */));
|
---|
6454 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
6455 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc); /* RIP updated by EMInterpretInstruction(). */
|
---|
6456 | else
|
---|
6457 | AssertMsg( rc == VERR_EM_INTERPRETER
|
---|
6458 | || rc == VINF_CPUM_R3_MSR_WRITE, ("hmR0SvmExitMsr: WrMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
|
---|
6459 | }
|
---|
6460 |
|
---|
6461 | if (rc == VINF_SUCCESS)
|
---|
6462 | {
|
---|
6463 | /* If this is an X2APIC WRMSR access, update the APIC state as well. */
|
---|
6464 | if ( pCtx->ecx >= MSR_IA32_X2APIC_START
|
---|
6465 | && pCtx->ecx <= MSR_IA32_X2APIC_END)
|
---|
6466 | {
|
---|
6467 | /*
|
---|
6468 | * We've already saved the APIC related guest-state (TPR) in hmR0SvmPostRunGuest(). When full APIC register
|
---|
6469 | * virtualization is implemented we'll have to make sure APIC state is saved from the VMCB before
|
---|
6470 | * EMInterpretWrmsr() changes it.
|
---|
6471 | */
|
---|
6472 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
6473 | }
|
---|
6474 | else if (pCtx->ecx == MSR_K6_EFER)
|
---|
6475 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_EFER_MSR);
|
---|
6476 | else if (pCtx->ecx == MSR_IA32_TSC)
|
---|
6477 | pSvmTransient->fUpdateTscOffsetting = true;
|
---|
6478 | }
|
---|
6479 | }
|
---|
6480 | else
|
---|
6481 | {
|
---|
6482 | /* MSR Read access. */
|
---|
6483 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitRdmsr);
|
---|
6484 | Assert(pVmcb->ctrl.u64ExitInfo1 == SVM_EXIT1_MSR_READ);
|
---|
6485 | Log4(("MSR Read: idMsr=%#RX32\n", pCtx->ecx));
|
---|
6486 |
|
---|
6487 | bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
|
---|
6488 | if (fSupportsNextRipSave)
|
---|
6489 | {
|
---|
6490 | rc = EMInterpretRdmsr(pVM, pVCpu, CPUMCTX2CORE(pCtx));
|
---|
6491 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
6492 | {
|
---|
6493 | pCtx->rip = pVmcb->ctrl.u64NextRIP;
|
---|
6494 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6495 | }
|
---|
6496 | else
|
---|
6497 | AssertMsg( rc == VERR_EM_INTERPRETER
|
---|
6498 | || rc == VINF_CPUM_R3_MSR_READ, ("hmR0SvmExitMsr: EMInterpretRdmsr failed rc=%Rrc\n", rc));
|
---|
6499 | }
|
---|
6500 | else
|
---|
6501 | {
|
---|
6502 | rc = VBOXSTRICTRC_TODO(EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0));
|
---|
6503 | if (RT_UNLIKELY(rc != VINF_SUCCESS))
|
---|
6504 | {
|
---|
6505 | AssertMsg( rc == VERR_EM_INTERPRETER
|
---|
6506 | || rc == VINF_CPUM_R3_MSR_READ, ("hmR0SvmExitMsr: RdMsr. EMInterpretInstruction failed rc=%Rrc\n", rc));
|
---|
6507 | }
|
---|
6508 | /* RIP updated by EMInterpretInstruction(). */
|
---|
6509 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6510 | }
|
---|
6511 | }
|
---|
6512 |
|
---|
6513 | /* RIP has been updated by EMInterpret[Rd|Wr]msr() or EMInterpretInstruction(). */
|
---|
6514 | return rc;
|
---|
6515 | }
|
---|
6516 |
|
---|
6517 |
|
---|
6518 | /**
|
---|
6519 | * \#VMEXIT handler for DRx read (SVM_EXIT_READ_DRx). Conditional \#VMEXIT.
|
---|
6520 | */
|
---|
6521 | HMSVM_EXIT_DECL hmR0SvmExitReadDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6522 | {
|
---|
6523 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6524 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxRead);
|
---|
6525 |
|
---|
6526 | /** @todo Stepping with nested-guest. */
|
---|
6527 | if (!CPUMIsGuestInSvmNestedHwVirtMode(pCtx))
|
---|
6528 | {
|
---|
6529 | /* We should -not- get this #VMEXIT if the guest's debug registers were active. */
|
---|
6530 | if (pSvmTransient->fWasGuestDebugStateActive)
|
---|
6531 | {
|
---|
6532 | AssertMsgFailed(("hmR0SvmExitReadDRx: Unexpected exit %#RX32\n", (uint32_t)pSvmTransient->u64ExitCode));
|
---|
6533 | pVCpu->hm.s.u32HMError = (uint32_t)pSvmTransient->u64ExitCode;
|
---|
6534 | return VERR_SVM_UNEXPECTED_EXIT;
|
---|
6535 | }
|
---|
6536 |
|
---|
6537 | /*
|
---|
6538 | * Lazy DR0-3 loading.
|
---|
6539 | */
|
---|
6540 | if (!pSvmTransient->fWasHyperDebugStateActive)
|
---|
6541 | {
|
---|
6542 | Assert(!DBGFIsStepping(pVCpu)); Assert(!pVCpu->hm.s.fSingleInstruction);
|
---|
6543 | Log5(("hmR0SvmExitReadDRx: Lazy loading guest debug registers\n"));
|
---|
6544 |
|
---|
6545 | /* Don't intercept DRx read and writes. */
|
---|
6546 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
6547 | pVmcb->ctrl.u16InterceptRdDRx = 0;
|
---|
6548 | pVmcb->ctrl.u16InterceptWrDRx = 0;
|
---|
6549 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_INTERCEPTS;
|
---|
6550 |
|
---|
6551 | /* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
|
---|
6552 | VMMRZCallRing3Disable(pVCpu);
|
---|
6553 | HM_DISABLE_PREEMPT();
|
---|
6554 |
|
---|
6555 | /* Save the host & load the guest debug state, restart execution of the MOV DRx instruction. */
|
---|
6556 | CPUMR0LoadGuestDebugState(pVCpu, false /* include DR6 */);
|
---|
6557 | Assert(CPUMIsGuestDebugStateActive(pVCpu) || HC_ARCH_BITS == 32);
|
---|
6558 |
|
---|
6559 | HM_RESTORE_PREEMPT();
|
---|
6560 | VMMRZCallRing3Enable(pVCpu);
|
---|
6561 |
|
---|
6562 | STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxContextSwitch);
|
---|
6563 | return VINF_SUCCESS;
|
---|
6564 | }
|
---|
6565 | }
|
---|
6566 |
|
---|
6567 | /*
|
---|
6568 | * Interpret the read/writing of DRx.
|
---|
6569 | */
|
---|
6570 | /** @todo Decode assist. */
|
---|
6571 | VBOXSTRICTRC rc = EMInterpretInstruction(pVCpu, CPUMCTX2CORE(pCtx), 0 /* pvFault */);
|
---|
6572 | Log5(("hmR0SvmExitReadDRx: Emulated DRx access: rc=%Rrc\n", VBOXSTRICTRC_VAL(rc)));
|
---|
6573 | if (RT_LIKELY(rc == VINF_SUCCESS))
|
---|
6574 | {
|
---|
6575 | /* Not necessary for read accesses but whatever doesn't hurt for now, will be fixed with decode assist. */
|
---|
6576 | /** @todo CPUM should set this flag! */
|
---|
6577 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_DEBUG);
|
---|
6578 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
6579 | }
|
---|
6580 | else
|
---|
6581 | Assert(rc == VERR_EM_INTERPRETER);
|
---|
6582 | return VBOXSTRICTRC_TODO(rc);
|
---|
6583 | }
|
---|
6584 |
|
---|
6585 |
|
---|
6586 | /**
|
---|
6587 | * \#VMEXIT handler for DRx write (SVM_EXIT_WRITE_DRx). Conditional \#VMEXIT.
|
---|
6588 | */
|
---|
6589 | HMSVM_EXIT_DECL hmR0SvmExitWriteDRx(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6590 | {
|
---|
6591 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6592 | /* For now it's the same since we interpret the instruction anyway. Will change when using of Decode Assist is implemented. */
|
---|
6593 | int rc = hmR0SvmExitReadDRx(pVCpu, pCtx, pSvmTransient);
|
---|
6594 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitDRxWrite);
|
---|
6595 | STAM_COUNTER_DEC(&pVCpu->hm.s.StatExitDRxRead);
|
---|
6596 | return rc;
|
---|
6597 | }
|
---|
6598 |
|
---|
6599 |
|
---|
6600 | /**
|
---|
6601 | * \#VMEXIT handler for XCRx write (SVM_EXIT_XSETBV). Conditional \#VMEXIT.
|
---|
6602 | */
|
---|
6603 | HMSVM_EXIT_DECL hmR0SvmExitXsetbv(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6604 | {
|
---|
6605 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6606 |
|
---|
6607 | /** @todo decode assists... */
|
---|
6608 | VBOXSTRICTRC rcStrict = IEMExecOne(pVCpu);
|
---|
6609 | if (rcStrict == VINF_IEM_RAISED_XCPT)
|
---|
6610 | HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
|
---|
6611 |
|
---|
6612 | pVCpu->hm.s.fLoadSaveGuestXcr0 = (pCtx->cr4 & X86_CR4_OSXSAVE) && pCtx->aXcr[0] != ASMGetXcr0();
|
---|
6613 | Log4(("hmR0SvmExitXsetbv: New XCR0=%#RX64 fLoadSaveGuestXcr0=%d (cr4=%RX64) rcStrict=%Rrc\n",
|
---|
6614 | pCtx->aXcr[0], pVCpu->hm.s.fLoadSaveGuestXcr0, pCtx->cr4, VBOXSTRICTRC_VAL(rcStrict)));
|
---|
6615 |
|
---|
6616 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
|
---|
6617 | return VBOXSTRICTRC_TODO(rcStrict);
|
---|
6618 | }
|
---|
6619 |
|
---|
6620 |
|
---|
6621 | /**
|
---|
6622 | * \#VMEXIT handler for I/O instructions (SVM_EXIT_IOIO). Conditional \#VMEXIT.
|
---|
6623 | */
|
---|
6624 | HMSVM_EXIT_DECL hmR0SvmExitIOInstr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6625 | {
|
---|
6626 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6627 |
|
---|
6628 | /* I/O operation lookup arrays. */
|
---|
6629 | static uint32_t const s_aIOSize[8] = { 0, 1, 2, 0, 4, 0, 0, 0 }; /* Size of the I/O accesses in bytes. */
|
---|
6630 | static uint32_t const s_aIOOpAnd[8] = { 0, 0xff, 0xffff, 0, 0xffffffff, 0, 0, 0 }; /* AND masks for saving
|
---|
6631 | the result (in AL/AX/EAX). */
|
---|
6632 | Log4(("hmR0SvmExitIOInstr: CS:RIP=%04x:%#RX64\n", pCtx->cs.Sel, pCtx->rip));
|
---|
6633 |
|
---|
6634 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
6635 | PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
6636 |
|
---|
6637 | /* Refer AMD spec. 15.10.2 "IN and OUT Behaviour" and Figure 15-2. "EXITINFO1 for IOIO Intercept" for the format. */
|
---|
6638 | SVMIOIOEXITINFO IoExitInfo;
|
---|
6639 | IoExitInfo.u = (uint32_t)pVmcb->ctrl.u64ExitInfo1;
|
---|
6640 | uint32_t uIOWidth = (IoExitInfo.u >> 4) & 0x7;
|
---|
6641 | uint32_t cbValue = s_aIOSize[uIOWidth];
|
---|
6642 | uint32_t uAndVal = s_aIOOpAnd[uIOWidth];
|
---|
6643 |
|
---|
6644 | if (RT_UNLIKELY(!cbValue))
|
---|
6645 | {
|
---|
6646 | AssertMsgFailed(("hmR0SvmExitIOInstr: Invalid IO operation. uIOWidth=%u\n", uIOWidth));
|
---|
6647 | return VERR_EM_INTERPRETER;
|
---|
6648 | }
|
---|
6649 |
|
---|
6650 | VBOXSTRICTRC rcStrict;
|
---|
6651 | bool fUpdateRipAlready = false;
|
---|
6652 | if (IoExitInfo.n.u1STR)
|
---|
6653 | {
|
---|
6654 | #ifdef VBOX_WITH_2ND_IEM_STEP
|
---|
6655 | /* INS/OUTS - I/O String instruction. */
|
---|
6656 | /** @todo Huh? why can't we use the segment prefix information given by AMD-V
|
---|
6657 | * in EXITINFO1? Investigate once this thing is up and running. */
|
---|
6658 | Log4(("CS:RIP=%04x:%08RX64 %#06x/%u %c str\n", pCtx->cs.Sel, pCtx->rip, IoExitInfo.n.u16Port, cbValue,
|
---|
6659 | IoExitInfo.n.u1Type == SVM_IOIO_WRITE ? 'w' : 'r'));
|
---|
6660 | AssertReturn(pCtx->dx == IoExitInfo.n.u16Port, VERR_SVM_IPE_2);
|
---|
6661 | static IEMMODE const s_aenmAddrMode[8] =
|
---|
6662 | {
|
---|
6663 | (IEMMODE)-1, IEMMODE_16BIT, IEMMODE_32BIT, (IEMMODE)-1, IEMMODE_64BIT, (IEMMODE)-1, (IEMMODE)-1, (IEMMODE)-1
|
---|
6664 | };
|
---|
6665 | IEMMODE enmAddrMode = s_aenmAddrMode[(IoExitInfo.u >> 7) & 0x7];
|
---|
6666 | if (enmAddrMode != (IEMMODE)-1)
|
---|
6667 | {
|
---|
6668 | uint64_t cbInstr = pVmcb->ctrl.u64ExitInfo2 - pCtx->rip;
|
---|
6669 | if (cbInstr <= 15 && cbInstr >= 1)
|
---|
6670 | {
|
---|
6671 | Assert(cbInstr >= 1U + IoExitInfo.n.u1REP);
|
---|
6672 | if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
|
---|
6673 | {
|
---|
6674 | /* Don't know exactly how to detect whether u3SEG is valid, currently
|
---|
6675 | only enabling it for Bulldozer and later with NRIP. OS/2 broke on
|
---|
6676 | 2384 Opterons when only checking NRIP. */
|
---|
6677 | bool const fSupportsNextRipSave = hmR0SvmSupportsNextRipSave(pVCpu, pCtx);
|
---|
6678 | if ( fSupportsNextRipSave
|
---|
6679 | && pVM->cpum.ro.GuestFeatures.enmMicroarch >= kCpumMicroarch_AMD_15h_First)
|
---|
6680 | {
|
---|
6681 | AssertMsg(IoExitInfo.n.u3SEG == X86_SREG_DS || cbInstr > 1U + IoExitInfo.n.u1REP,
|
---|
6682 | ("u32Seg=%d cbInstr=%d u1REP=%d", IoExitInfo.n.u3SEG, cbInstr, IoExitInfo.n.u1REP));
|
---|
6683 | rcStrict = IEMExecStringIoWrite(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1REP, (uint8_t)cbInstr,
|
---|
6684 | IoExitInfo.n.u3SEG, true /*fIoChecked*/);
|
---|
6685 | }
|
---|
6686 | else if (cbInstr == 1U + IoExitInfo.n.u1REP)
|
---|
6687 | rcStrict = IEMExecStringIoWrite(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1REP, (uint8_t)cbInstr,
|
---|
6688 | X86_SREG_DS, true /*fIoChecked*/);
|
---|
6689 | else
|
---|
6690 | rcStrict = IEMExecOne(pVCpu);
|
---|
6691 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringWrite);
|
---|
6692 | }
|
---|
6693 | else
|
---|
6694 | {
|
---|
6695 | AssertMsg(IoExitInfo.n.u3SEG == X86_SREG_ES /*=0*/, ("%#x\n", IoExitInfo.n.u3SEG));
|
---|
6696 | rcStrict = IEMExecStringIoRead(pVCpu, cbValue, enmAddrMode, IoExitInfo.n.u1REP, (uint8_t)cbInstr,
|
---|
6697 | true /*fIoChecked*/);
|
---|
6698 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringRead);
|
---|
6699 | }
|
---|
6700 | }
|
---|
6701 | else
|
---|
6702 | {
|
---|
6703 | AssertMsgFailed(("rip=%RX64 nrip=%#RX64 cbInstr=%#RX64\n", pCtx->rip, pVmcb->ctrl.u64ExitInfo2, cbInstr));
|
---|
6704 | rcStrict = IEMExecOne(pVCpu);
|
---|
6705 | }
|
---|
6706 | }
|
---|
6707 | else
|
---|
6708 | {
|
---|
6709 | AssertMsgFailed(("IoExitInfo=%RX64\n", IoExitInfo.u));
|
---|
6710 | rcStrict = IEMExecOne(pVCpu);
|
---|
6711 | }
|
---|
6712 | fUpdateRipAlready = true;
|
---|
6713 |
|
---|
6714 | #else
|
---|
6715 | /* INS/OUTS - I/O String instruction. */
|
---|
6716 | PDISCPUSTATE pDis = &pVCpu->hm.s.DisState;
|
---|
6717 |
|
---|
6718 | /** @todo Huh? why can't we use the segment prefix information given by AMD-V
|
---|
6719 | * in EXITINFO1? Investigate once this thing is up and running. */
|
---|
6720 |
|
---|
6721 | rcStrict = EMInterpretDisasCurrent(pVM, pVCpu, pDis, NULL);
|
---|
6722 | if (rcStrict == VINF_SUCCESS)
|
---|
6723 | {
|
---|
6724 | if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
|
---|
6725 | {
|
---|
6726 | rcStrict = IOMInterpretOUTSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
|
---|
6727 | (DISCPUMODE)pDis->uAddrMode, cbValue);
|
---|
6728 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringWrite);
|
---|
6729 | }
|
---|
6730 | else
|
---|
6731 | {
|
---|
6732 | rcStrict = IOMInterpretINSEx(pVM, pVCpu, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, pDis->fPrefix,
|
---|
6733 | (DISCPUMODE)pDis->uAddrMode, cbValue);
|
---|
6734 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOStringRead);
|
---|
6735 | }
|
---|
6736 | }
|
---|
6737 | else
|
---|
6738 | rcStrict = VINF_EM_RAW_EMULATE_INSTR;
|
---|
6739 | #endif
|
---|
6740 | }
|
---|
6741 | else
|
---|
6742 | {
|
---|
6743 | /* IN/OUT - I/O instruction. */
|
---|
6744 | Assert(!IoExitInfo.n.u1REP);
|
---|
6745 |
|
---|
6746 | if (IoExitInfo.n.u1Type == SVM_IOIO_WRITE)
|
---|
6747 | {
|
---|
6748 | rcStrict = IOMIOPortWrite(pVM, pVCpu, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, cbValue);
|
---|
6749 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIOWrite);
|
---|
6750 | }
|
---|
6751 | else
|
---|
6752 | {
|
---|
6753 | uint32_t u32Val = 0;
|
---|
6754 | rcStrict = IOMIOPortRead(pVM, pVCpu, IoExitInfo.n.u16Port, &u32Val, cbValue);
|
---|
6755 | if (IOM_SUCCESS(rcStrict))
|
---|
6756 | {
|
---|
6757 | /* Save result of I/O IN instr. in AL/AX/EAX. */
|
---|
6758 | /** @todo r=bird: 32-bit op size should clear high bits of rax! */
|
---|
6759 | pCtx->eax = (pCtx->eax & ~uAndVal) | (u32Val & uAndVal);
|
---|
6760 | }
|
---|
6761 | else if (rcStrict == VINF_IOM_R3_IOPORT_READ)
|
---|
6762 | HMR0SavePendingIOPortRead(pVCpu, pCtx->rip, pVmcb->ctrl.u64ExitInfo2, IoExitInfo.n.u16Port, uAndVal, cbValue);
|
---|
6763 |
|
---|
6764 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIORead);
|
---|
6765 | }
|
---|
6766 | }
|
---|
6767 |
|
---|
6768 | if (IOM_SUCCESS(rcStrict))
|
---|
6769 | {
|
---|
6770 | /* AMD-V saves the RIP of the instruction following the IO instruction in EXITINFO2. */
|
---|
6771 | if (!fUpdateRipAlready)
|
---|
6772 | pCtx->rip = pVmcb->ctrl.u64ExitInfo2;
|
---|
6773 |
|
---|
6774 | /*
|
---|
6775 | * If any I/O breakpoints are armed, we need to check if one triggered
|
---|
6776 | * and take appropriate action.
|
---|
6777 | * Note that the I/O breakpoint type is undefined if CR4.DE is 0.
|
---|
6778 | */
|
---|
6779 | /** @todo Optimize away the DBGFBpIsHwIoArmed call by having DBGF tell the
|
---|
6780 | * execution engines about whether hyper BPs and such are pending. */
|
---|
6781 | uint32_t const uDr7 = pCtx->dr[7];
|
---|
6782 | if (RT_UNLIKELY( ( (uDr7 & X86_DR7_ENABLED_MASK)
|
---|
6783 | && X86_DR7_ANY_RW_IO(uDr7)
|
---|
6784 | && (pCtx->cr4 & X86_CR4_DE))
|
---|
6785 | || DBGFBpIsHwIoArmed(pVM)))
|
---|
6786 | {
|
---|
6787 | /* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
|
---|
6788 | VMMRZCallRing3Disable(pVCpu);
|
---|
6789 | HM_DISABLE_PREEMPT();
|
---|
6790 |
|
---|
6791 | STAM_COUNTER_INC(&pVCpu->hm.s.StatDRxIoCheck);
|
---|
6792 | CPUMR0DebugStateMaybeSaveGuest(pVCpu, false /*fDr6*/);
|
---|
6793 |
|
---|
6794 | VBOXSTRICTRC rcStrict2 = DBGFBpCheckIo(pVM, pVCpu, pCtx, IoExitInfo.n.u16Port, cbValue);
|
---|
6795 | if (rcStrict2 == VINF_EM_RAW_GUEST_TRAP)
|
---|
6796 | {
|
---|
6797 | /* Raise #DB. */
|
---|
6798 | pVmcb->guest.u64DR6 = pCtx->dr[6];
|
---|
6799 | pVmcb->guest.u64DR7 = pCtx->dr[7];
|
---|
6800 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
|
---|
6801 | hmR0SvmSetPendingXcptDB(pVCpu);
|
---|
6802 | }
|
---|
6803 | /* rcStrict is VINF_SUCCESS, VINF_IOM_R3_IOPORT_COMMIT_WRITE, or in [VINF_EM_FIRST..VINF_EM_LAST],
|
---|
6804 | however we can ditch VINF_IOM_R3_IOPORT_COMMIT_WRITE as it has VMCPU_FF_IOM as backup. */
|
---|
6805 | else if ( rcStrict2 != VINF_SUCCESS
|
---|
6806 | && (rcStrict == VINF_SUCCESS || rcStrict2 < rcStrict))
|
---|
6807 | rcStrict = rcStrict2;
|
---|
6808 | AssertCompile(VINF_EM_LAST < VINF_IOM_R3_IOPORT_COMMIT_WRITE);
|
---|
6809 |
|
---|
6810 | HM_RESTORE_PREEMPT();
|
---|
6811 | VMMRZCallRing3Enable(pVCpu);
|
---|
6812 | }
|
---|
6813 |
|
---|
6814 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rcStrict);
|
---|
6815 | }
|
---|
6816 |
|
---|
6817 | #ifdef VBOX_STRICT
|
---|
6818 | if (rcStrict == VINF_IOM_R3_IOPORT_READ)
|
---|
6819 | Assert(IoExitInfo.n.u1Type == SVM_IOIO_READ);
|
---|
6820 | else if (rcStrict == VINF_IOM_R3_IOPORT_WRITE || rcStrict == VINF_IOM_R3_IOPORT_COMMIT_WRITE)
|
---|
6821 | Assert(IoExitInfo.n.u1Type == SVM_IOIO_WRITE);
|
---|
6822 | else
|
---|
6823 | {
|
---|
6824 | /** @todo r=bird: This is missing a bunch of VINF_EM_FIRST..VINF_EM_LAST
|
---|
6825 | * statuses, that the VMM device and some others may return. See
|
---|
6826 | * IOM_SUCCESS() for guidance. */
|
---|
6827 | AssertMsg( RT_FAILURE(rcStrict)
|
---|
6828 | || rcStrict == VINF_SUCCESS
|
---|
6829 | || rcStrict == VINF_EM_RAW_EMULATE_INSTR
|
---|
6830 | || rcStrict == VINF_EM_DBG_BREAKPOINT
|
---|
6831 | || rcStrict == VINF_EM_RAW_GUEST_TRAP
|
---|
6832 | || rcStrict == VINF_EM_RAW_TO_R3
|
---|
6833 | || rcStrict == VINF_TRPM_XCPT_DISPATCHED
|
---|
6834 | || rcStrict == VINF_EM_TRIPLE_FAULT, ("%Rrc\n", VBOXSTRICTRC_VAL(rcStrict)));
|
---|
6835 | }
|
---|
6836 | #endif
|
---|
6837 | return VBOXSTRICTRC_TODO(rcStrict);
|
---|
6838 | }
|
---|
6839 |
|
---|
6840 |
|
---|
6841 | /**
|
---|
6842 | * \#VMEXIT handler for Nested Page-faults (SVM_EXIT_NPF). Conditional \#VMEXIT.
|
---|
6843 | */
|
---|
6844 | HMSVM_EXIT_DECL hmR0SvmExitNestedPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6845 | {
|
---|
6846 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6847 | HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
|
---|
6848 |
|
---|
6849 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
6850 | Assert(pVM->hm.s.fNestedPaging);
|
---|
6851 |
|
---|
6852 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
6853 |
|
---|
6854 | /* See AMD spec. 15.25.6 "Nested versus Guest Page Faults, Fault Ordering" for VMCB details for #NPF. */
|
---|
6855 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
6856 | uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
|
---|
6857 | RTGCPHYS GCPhysFaultAddr = pVmcb->ctrl.u64ExitInfo2;
|
---|
6858 |
|
---|
6859 | Log4(("#NPF at CS:RIP=%04x:%#RX64 faultaddr=%RGp errcode=%#x \n", pCtx->cs.Sel, pCtx->rip, GCPhysFaultAddr, u32ErrCode));
|
---|
6860 |
|
---|
6861 | #ifdef VBOX_HM_WITH_GUEST_PATCHING
|
---|
6862 | /* TPR patching for 32-bit guests, using the reserved bit in the page tables for MMIO regions. */
|
---|
6863 | if ( pVM->hm.s.fTprPatchingAllowed
|
---|
6864 | && (GCPhysFaultAddr & PAGE_OFFSET_MASK) == XAPIC_OFF_TPR
|
---|
6865 | && ( !(u32ErrCode & X86_TRAP_PF_P) /* Not present */
|
---|
6866 | || (u32ErrCode & (X86_TRAP_PF_P | X86_TRAP_PF_RSVD)) == (X86_TRAP_PF_P | X86_TRAP_PF_RSVD)) /* MMIO page. */
|
---|
6867 | && !CPUMIsGuestInLongModeEx(pCtx)
|
---|
6868 | && !CPUMGetGuestCPL(pVCpu)
|
---|
6869 | && pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
|
---|
6870 | {
|
---|
6871 | RTGCPHYS GCPhysApicBase = APICGetBaseMsrNoCheck(pVCpu);
|
---|
6872 | GCPhysApicBase &= PAGE_BASE_GC_MASK;
|
---|
6873 |
|
---|
6874 | if (GCPhysFaultAddr == GCPhysApicBase + XAPIC_OFF_TPR)
|
---|
6875 | {
|
---|
6876 | /* Only attempt to patch the instruction once. */
|
---|
6877 | PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
|
---|
6878 | if (!pPatch)
|
---|
6879 | return VINF_EM_HM_PATCH_TPR_INSTR;
|
---|
6880 | }
|
---|
6881 | }
|
---|
6882 | #endif
|
---|
6883 |
|
---|
6884 | /*
|
---|
6885 | * Determine the nested paging mode.
|
---|
6886 | */
|
---|
6887 | PGMMODE enmNestedPagingMode;
|
---|
6888 | #if HC_ARCH_BITS == 32
|
---|
6889 | if (CPUMIsGuestInLongModeEx(pCtx))
|
---|
6890 | enmNestedPagingMode = PGMMODE_AMD64_NX;
|
---|
6891 | else
|
---|
6892 | #endif
|
---|
6893 | enmNestedPagingMode = PGMGetHostMode(pVM);
|
---|
6894 |
|
---|
6895 | /*
|
---|
6896 | * MMIO optimization using the reserved (RSVD) bit in the guest page tables for MMIO pages.
|
---|
6897 | */
|
---|
6898 | int rc;
|
---|
6899 | Assert((u32ErrCode & (X86_TRAP_PF_RSVD | X86_TRAP_PF_P)) != X86_TRAP_PF_RSVD);
|
---|
6900 | if ((u32ErrCode & (X86_TRAP_PF_RSVD | X86_TRAP_PF_P)) == (X86_TRAP_PF_RSVD | X86_TRAP_PF_P))
|
---|
6901 | {
|
---|
6902 | /* If event delivery causes an MMIO #NPF, go back to instruction emulation as
|
---|
6903 | otherwise injecting the original pending event would most likely cause the same MMIO #NPF. */
|
---|
6904 | if (pVCpu->hm.s.Event.fPending)
|
---|
6905 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
6906 |
|
---|
6907 | VBOXSTRICTRC rc2 = PGMR0Trap0eHandlerNPMisconfig(pVM, pVCpu, enmNestedPagingMode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr,
|
---|
6908 | u32ErrCode);
|
---|
6909 | rc = VBOXSTRICTRC_VAL(rc2);
|
---|
6910 |
|
---|
6911 | /*
|
---|
6912 | * If we succeed, resume guest execution.
|
---|
6913 | * If we fail in interpreting the instruction because we couldn't get the guest physical address
|
---|
6914 | * of the page containing the instruction via the guest's page tables (we would invalidate the guest page
|
---|
6915 | * in the host TLB), resume execution which would cause a guest page fault to let the guest handle this
|
---|
6916 | * weird case. See @bugref{6043}.
|
---|
6917 | */
|
---|
6918 | if ( rc == VINF_SUCCESS
|
---|
6919 | || rc == VERR_PAGE_TABLE_NOT_PRESENT
|
---|
6920 | || rc == VERR_PAGE_NOT_PRESENT)
|
---|
6921 | {
|
---|
6922 | /* Successfully handled MMIO operation. */
|
---|
6923 | HMCPU_CF_SET(pVCpu, HM_CHANGED_SVM_GUEST_APIC_STATE);
|
---|
6924 | rc = VINF_SUCCESS;
|
---|
6925 | }
|
---|
6926 | return rc;
|
---|
6927 | }
|
---|
6928 |
|
---|
6929 | TRPMAssertXcptPF(pVCpu, GCPhysFaultAddr, u32ErrCode);
|
---|
6930 | rc = PGMR0Trap0eHandlerNestedPaging(pVM, pVCpu, enmNestedPagingMode, u32ErrCode, CPUMCTX2CORE(pCtx), GCPhysFaultAddr);
|
---|
6931 | TRPMResetTrap(pVCpu);
|
---|
6932 |
|
---|
6933 | Log4(("#NPF: PGMR0Trap0eHandlerNestedPaging returned %Rrc CS:RIP=%04x:%#RX64\n", rc, pCtx->cs.Sel, pCtx->rip));
|
---|
6934 |
|
---|
6935 | /*
|
---|
6936 | * Same case as PGMR0Trap0eHandlerNPMisconfig(). See comment above, @bugref{6043}.
|
---|
6937 | */
|
---|
6938 | if ( rc == VINF_SUCCESS
|
---|
6939 | || rc == VERR_PAGE_TABLE_NOT_PRESENT
|
---|
6940 | || rc == VERR_PAGE_NOT_PRESENT)
|
---|
6941 | {
|
---|
6942 | /* We've successfully synced our shadow page tables. */
|
---|
6943 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
|
---|
6944 | rc = VINF_SUCCESS;
|
---|
6945 | }
|
---|
6946 |
|
---|
6947 | return rc;
|
---|
6948 | }
|
---|
6949 |
|
---|
6950 |
|
---|
6951 | /**
|
---|
6952 | * \#VMEXIT handler for virtual interrupt (SVM_EXIT_VINTR). Conditional
|
---|
6953 | * \#VMEXIT.
|
---|
6954 | */
|
---|
6955 | HMSVM_EXIT_DECL hmR0SvmExitVIntr(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6956 | {
|
---|
6957 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6958 | HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
|
---|
6959 |
|
---|
6960 | PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
6961 | hmR0SvmClearVirtIntrIntercept(pVmcb);
|
---|
6962 |
|
---|
6963 | /* Deliver the pending interrupt/NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
|
---|
6964 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitIntWindow);
|
---|
6965 | return VINF_SUCCESS;
|
---|
6966 | }
|
---|
6967 |
|
---|
6968 |
|
---|
6969 | /**
|
---|
6970 | * \#VMEXIT handler for task switches (SVM_EXIT_TASK_SWITCH). Conditional
|
---|
6971 | * \#VMEXIT.
|
---|
6972 | */
|
---|
6973 | HMSVM_EXIT_DECL hmR0SvmExitTaskSwitch(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
6974 | {
|
---|
6975 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
6976 |
|
---|
6977 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
6978 |
|
---|
6979 | #ifndef HMSVM_ALWAYS_TRAP_TASK_SWITCH
|
---|
6980 | Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
|
---|
6981 | #endif
|
---|
6982 |
|
---|
6983 | /* Check if this task-switch occurred while delivering an event through the guest IDT. */
|
---|
6984 | if (pVCpu->hm.s.Event.fPending) /* Can happen with exceptions/NMI. See @bugref{8411}. */
|
---|
6985 | {
|
---|
6986 | /*
|
---|
6987 | * AMD-V provides us with the exception which caused the TS; we collect
|
---|
6988 | * the information in the call to hmR0SvmCheckExitDueToEventDelivery.
|
---|
6989 | */
|
---|
6990 | Log4(("hmR0SvmExitTaskSwitch: TS occurred during event delivery.\n"));
|
---|
6991 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
|
---|
6992 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
6993 | }
|
---|
6994 |
|
---|
6995 | /** @todo Emulate task switch someday, currently just going back to ring-3 for
|
---|
6996 | * emulation. */
|
---|
6997 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitTaskSwitch);
|
---|
6998 | return VERR_EM_INTERPRETER;
|
---|
6999 | }
|
---|
7000 |
|
---|
7001 |
|
---|
7002 | /**
|
---|
7003 | * \#VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional \#VMEXIT.
|
---|
7004 | */
|
---|
7005 | HMSVM_EXIT_DECL hmR0SvmExitVmmCall(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7006 | {
|
---|
7007 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7008 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitVmcall);
|
---|
7009 |
|
---|
7010 | bool fRipUpdated;
|
---|
7011 | VBOXSTRICTRC rcStrict = HMSvmVmmcall(pVCpu, pCtx, &fRipUpdated);
|
---|
7012 | if (RT_SUCCESS(rcStrict))
|
---|
7013 | {
|
---|
7014 | /* Only update the RIP if we're continuing guest execution and not
|
---|
7015 | in the case of say VINF_GIM_R3_HYPERCALL. */
|
---|
7016 | if ( rcStrict == VINF_SUCCESS
|
---|
7017 | && !fRipUpdated)
|
---|
7018 | {
|
---|
7019 | hmR0SvmAdvanceRipHwAssist(pVCpu, pCtx, 3 /* cbInstr */);
|
---|
7020 | }
|
---|
7021 |
|
---|
7022 | /* If the hypercall or TPR patching changes anything other than guest's general-purpose registers,
|
---|
7023 | we would need to reload the guest changed bits here before VM-entry. */
|
---|
7024 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
7025 | }
|
---|
7026 |
|
---|
7027 | hmR0SvmSetPendingXcptUD(pVCpu);
|
---|
7028 | return VINF_SUCCESS;
|
---|
7029 | }
|
---|
7030 |
|
---|
7031 |
|
---|
7032 | /**
|
---|
7033 | * \#VMEXIT handler for VMMCALL (SVM_EXIT_VMMCALL). Conditional \#VMEXIT.
|
---|
7034 | */
|
---|
7035 | HMSVM_EXIT_DECL hmR0SvmExitPause(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7036 | {
|
---|
7037 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7038 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitPause);
|
---|
7039 | return VINF_EM_RAW_INTERRUPT;
|
---|
7040 | }
|
---|
7041 |
|
---|
7042 |
|
---|
7043 | /**
|
---|
7044 | * \#VMEXIT handler for IRET (SVM_EXIT_IRET). Conditional \#VMEXIT.
|
---|
7045 | */
|
---|
7046 | HMSVM_EXIT_DECL hmR0SvmExitIret(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7047 | {
|
---|
7048 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7049 |
|
---|
7050 | /* Clear NMI blocking. */
|
---|
7051 | VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_BLOCK_NMIS);
|
---|
7052 |
|
---|
7053 | /* Indicate that we no longer need to #VMEXIT when the guest is ready to receive NMIs, it is now ready. */
|
---|
7054 | PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
7055 | hmR0SvmClearIretIntercept(pVmcb);
|
---|
7056 |
|
---|
7057 | /* Deliver the pending NMI via hmR0SvmEvaluatePendingEvent() and resume guest execution. */
|
---|
7058 | return VINF_SUCCESS;
|
---|
7059 | }
|
---|
7060 |
|
---|
7061 |
|
---|
7062 | /**
|
---|
7063 | * \#VMEXIT handler for page-fault exceptions (SVM_EXIT_EXCEPTION_14).
|
---|
7064 | * Conditional \#VMEXIT.
|
---|
7065 | */
|
---|
7066 | HMSVM_EXIT_DECL hmR0SvmExitXcptPF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7067 | {
|
---|
7068 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7069 | HMSVM_ASSERT_NOT_IN_NESTED_GUEST(pCtx);
|
---|
7070 |
|
---|
7071 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
7072 |
|
---|
7073 | /* See AMD spec. 15.12.15 "#PF (Page Fault)". */
|
---|
7074 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
7075 | uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
|
---|
7076 | RTGCUINTPTR uFaultAddress = pVmcb->ctrl.u64ExitInfo2;
|
---|
7077 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
7078 |
|
---|
7079 | #if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) || defined(HMSVM_ALWAYS_TRAP_PF)
|
---|
7080 | if (pVM->hm.s.fNestedPaging)
|
---|
7081 | {
|
---|
7082 | pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
|
---|
7083 | if (!pSvmTransient->fVectoringDoublePF)
|
---|
7084 | {
|
---|
7085 | /* A genuine guest #PF, reflect it to the guest. */
|
---|
7086 | hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
|
---|
7087 | Log4(("#PF: Guest page fault at %04X:%RGv FaultAddr=%RGv ErrCode=%#x\n", pCtx->cs.Sel, (RTGCPTR)pCtx->rip,
|
---|
7088 | uFaultAddress, u32ErrCode));
|
---|
7089 | }
|
---|
7090 | else
|
---|
7091 | {
|
---|
7092 | /* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
|
---|
7093 | hmR0SvmSetPendingXcptDF(pVCpu);
|
---|
7094 | Log4(("Pending #DF due to vectoring #PF. NP\n"));
|
---|
7095 | }
|
---|
7096 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
|
---|
7097 | return VINF_SUCCESS;
|
---|
7098 | }
|
---|
7099 | #endif
|
---|
7100 |
|
---|
7101 | Assert(!pVM->hm.s.fNestedPaging);
|
---|
7102 |
|
---|
7103 | #ifdef VBOX_HM_WITH_GUEST_PATCHING
|
---|
7104 | /* Shortcut for APIC TPR reads and writes; only applicable to 32-bit guests. */
|
---|
7105 | if ( pVM->hm.s.fTprPatchingAllowed
|
---|
7106 | && (uFaultAddress & 0xfff) == XAPIC_OFF_TPR
|
---|
7107 | && !(u32ErrCode & X86_TRAP_PF_P) /* Not present. */
|
---|
7108 | && !CPUMIsGuestInLongModeEx(pCtx)
|
---|
7109 | && !CPUMGetGuestCPL(pVCpu)
|
---|
7110 | && pVM->hm.s.cPatches < RT_ELEMENTS(pVM->hm.s.aPatches))
|
---|
7111 | {
|
---|
7112 | RTGCPHYS GCPhysApicBase;
|
---|
7113 | GCPhysApicBase = APICGetBaseMsrNoCheck(pVCpu);
|
---|
7114 | GCPhysApicBase &= PAGE_BASE_GC_MASK;
|
---|
7115 |
|
---|
7116 | /* Check if the page at the fault-address is the APIC base. */
|
---|
7117 | RTGCPHYS GCPhysPage;
|
---|
7118 | int rc2 = PGMGstGetPage(pVCpu, (RTGCPTR)uFaultAddress, NULL /* pfFlags */, &GCPhysPage);
|
---|
7119 | if ( rc2 == VINF_SUCCESS
|
---|
7120 | && GCPhysPage == GCPhysApicBase)
|
---|
7121 | {
|
---|
7122 | /* Only attempt to patch the instruction once. */
|
---|
7123 | PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip);
|
---|
7124 | if (!pPatch)
|
---|
7125 | return VINF_EM_HM_PATCH_TPR_INSTR;
|
---|
7126 | }
|
---|
7127 | }
|
---|
7128 | #endif
|
---|
7129 |
|
---|
7130 | Log4(("#PF: uFaultAddress=%#RX64 CS:RIP=%#04x:%#RX64 u32ErrCode %#RX32 cr3=%#RX64\n", uFaultAddress, pCtx->cs.Sel,
|
---|
7131 | pCtx->rip, u32ErrCode, pCtx->cr3));
|
---|
7132 |
|
---|
7133 | /* If it's a vectoring #PF, emulate injecting the original event injection as PGMTrap0eHandler() is incapable
|
---|
7134 | of differentiating between instruction emulation and event injection that caused a #PF. See @bugref{6607}. */
|
---|
7135 | if (pSvmTransient->fVectoringPF)
|
---|
7136 | {
|
---|
7137 | Assert(pVCpu->hm.s.Event.fPending);
|
---|
7138 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
7139 | }
|
---|
7140 |
|
---|
7141 | TRPMAssertXcptPF(pVCpu, uFaultAddress, u32ErrCode);
|
---|
7142 | int rc = PGMTrap0eHandler(pVCpu, u32ErrCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
|
---|
7143 |
|
---|
7144 | Log4(("#PF rc=%Rrc\n", rc));
|
---|
7145 |
|
---|
7146 | if (rc == VINF_SUCCESS)
|
---|
7147 | {
|
---|
7148 | /* Successfully synced shadow pages tables or emulated an MMIO instruction. */
|
---|
7149 | TRPMResetTrap(pVCpu);
|
---|
7150 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
|
---|
7151 | HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
|
---|
7152 | return rc;
|
---|
7153 | }
|
---|
7154 | else if (rc == VINF_EM_RAW_GUEST_TRAP)
|
---|
7155 | {
|
---|
7156 | pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
|
---|
7157 |
|
---|
7158 | if (!pSvmTransient->fVectoringDoublePF)
|
---|
7159 | {
|
---|
7160 | /* It's a guest page fault and needs to be reflected to the guest. */
|
---|
7161 | u32ErrCode = TRPMGetErrorCode(pVCpu); /* The error code might have been changed. */
|
---|
7162 | TRPMResetTrap(pVCpu);
|
---|
7163 | hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
|
---|
7164 | }
|
---|
7165 | else
|
---|
7166 | {
|
---|
7167 | /* A guest page-fault occurred during delivery of a page-fault. Inject #DF. */
|
---|
7168 | TRPMResetTrap(pVCpu);
|
---|
7169 | hmR0SvmSetPendingXcptDF(pVCpu);
|
---|
7170 | Log4(("#PF: Pending #DF due to vectoring #PF\n"));
|
---|
7171 | }
|
---|
7172 |
|
---|
7173 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
|
---|
7174 | return VINF_SUCCESS;
|
---|
7175 | }
|
---|
7176 |
|
---|
7177 | TRPMResetTrap(pVCpu);
|
---|
7178 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPFEM);
|
---|
7179 | return rc;
|
---|
7180 | }
|
---|
7181 |
|
---|
7182 |
|
---|
7183 | /**
|
---|
7184 | * \#VMEXIT handler for device-not-available exceptions (SVM_EXIT_EXCEPTION_7).
|
---|
7185 | * Conditional \#VMEXIT.
|
---|
7186 | */
|
---|
7187 | HMSVM_EXIT_DECL hmR0SvmExitXcptNM(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7188 | {
|
---|
7189 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7190 |
|
---|
7191 | /* Paranoia; Ensure we cannot be called as a result of event delivery. */
|
---|
7192 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
7193 | Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid); NOREF(pVmcb);
|
---|
7194 |
|
---|
7195 | /* We're playing with the host CPU state here, make sure we don't preempt or longjmp. */
|
---|
7196 | VMMRZCallRing3Disable(pVCpu);
|
---|
7197 | HM_DISABLE_PREEMPT();
|
---|
7198 |
|
---|
7199 | int rc;
|
---|
7200 | /* If the guest FPU was active at the time of the #NM exit, then it's a guest fault. */
|
---|
7201 | if (pSvmTransient->fWasGuestFPUStateActive)
|
---|
7202 | {
|
---|
7203 | rc = VINF_EM_RAW_GUEST_TRAP;
|
---|
7204 | Assert(CPUMIsGuestFPUStateActive(pVCpu) || HMCPU_CF_IS_PENDING(pVCpu, HM_CHANGED_GUEST_CR0));
|
---|
7205 | }
|
---|
7206 | else
|
---|
7207 | {
|
---|
7208 | #ifndef HMSVM_ALWAYS_TRAP_ALL_XCPTS
|
---|
7209 | Assert(!pSvmTransient->fWasGuestFPUStateActive);
|
---|
7210 | #endif
|
---|
7211 | rc = CPUMR0Trap07Handler(pVCpu->CTX_SUFF(pVM), pVCpu); /* (No need to set HM_CHANGED_HOST_CONTEXT for SVM.) */
|
---|
7212 | Assert( rc == VINF_EM_RAW_GUEST_TRAP
|
---|
7213 | || ((rc == VINF_SUCCESS || rc == VINF_CPUM_HOST_CR0_MODIFIED) && CPUMIsGuestFPUStateActive(pVCpu)));
|
---|
7214 | }
|
---|
7215 |
|
---|
7216 | HM_RESTORE_PREEMPT();
|
---|
7217 | VMMRZCallRing3Enable(pVCpu);
|
---|
7218 |
|
---|
7219 | if (rc == VINF_SUCCESS || rc == VINF_CPUM_HOST_CR0_MODIFIED)
|
---|
7220 | {
|
---|
7221 | /* Guest FPU state was activated, we'll want to change CR0 FPU intercepts before the next VM-reentry. */
|
---|
7222 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_CR0);
|
---|
7223 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowNM);
|
---|
7224 | pVCpu->hm.s.fPreloadGuestFpu = true;
|
---|
7225 | }
|
---|
7226 | else
|
---|
7227 | {
|
---|
7228 | /* Forward #NM to the guest. */
|
---|
7229 | Assert(rc == VINF_EM_RAW_GUEST_TRAP);
|
---|
7230 | hmR0SvmSetPendingXcptNM(pVCpu);
|
---|
7231 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestNM);
|
---|
7232 | }
|
---|
7233 | return VINF_SUCCESS;
|
---|
7234 | }
|
---|
7235 |
|
---|
7236 |
|
---|
7237 | /**
|
---|
7238 | * \#VMEXIT handler for undefined opcode (SVM_EXIT_EXCEPTION_6).
|
---|
7239 | * Conditional \#VMEXIT.
|
---|
7240 | */
|
---|
7241 | HMSVM_EXIT_DECL hmR0SvmExitXcptUD(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7242 | {
|
---|
7243 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7244 |
|
---|
7245 | /* Paranoia; Ensure we cannot be called as a result of event delivery. */
|
---|
7246 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
7247 | Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid); NOREF(pVmcb);
|
---|
7248 |
|
---|
7249 | int rc = VERR_SVM_UNEXPECTED_XCPT_EXIT;
|
---|
7250 | if (pVCpu->hm.s.fGIMTrapXcptUD)
|
---|
7251 | {
|
---|
7252 | uint8_t cbInstr = 0;
|
---|
7253 | VBOXSTRICTRC rcStrict = GIMXcptUD(pVCpu, pCtx, NULL /* pDis */, &cbInstr);
|
---|
7254 | if (rcStrict == VINF_SUCCESS)
|
---|
7255 | {
|
---|
7256 | /* #UD #VMEXIT does not have valid NRIP information, manually advance RIP. See @bugref{7270#c170}. */
|
---|
7257 | hmR0SvmAdvanceRipDumb(pVCpu, pCtx, cbInstr);
|
---|
7258 | rc = VINF_SUCCESS;
|
---|
7259 | HMSVM_CHECK_SINGLE_STEP(pVCpu, rc);
|
---|
7260 | }
|
---|
7261 | else if (rcStrict == VINF_GIM_HYPERCALL_CONTINUING)
|
---|
7262 | rc = VINF_SUCCESS;
|
---|
7263 | else if (rcStrict == VINF_GIM_R3_HYPERCALL)
|
---|
7264 | rc = VINF_GIM_R3_HYPERCALL;
|
---|
7265 | else
|
---|
7266 | Assert(RT_FAILURE(VBOXSTRICTRC_VAL(rcStrict)));
|
---|
7267 | }
|
---|
7268 |
|
---|
7269 | /* If the GIM #UD exception handler didn't succeed for some reason or wasn't needed, raise #UD. */
|
---|
7270 | if (RT_FAILURE(rc))
|
---|
7271 | {
|
---|
7272 | hmR0SvmSetPendingXcptUD(pVCpu);
|
---|
7273 | rc = VINF_SUCCESS;
|
---|
7274 | }
|
---|
7275 |
|
---|
7276 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestUD);
|
---|
7277 | return rc;
|
---|
7278 | }
|
---|
7279 |
|
---|
7280 |
|
---|
7281 | /**
|
---|
7282 | * \#VMEXIT handler for math-fault exceptions (SVM_EXIT_EXCEPTION_16).
|
---|
7283 | * Conditional \#VMEXIT.
|
---|
7284 | */
|
---|
7285 | HMSVM_EXIT_DECL hmR0SvmExitXcptMF(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7286 | {
|
---|
7287 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7288 |
|
---|
7289 | /* Paranoia; Ensure we cannot be called as a result of event delivery. */
|
---|
7290 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
7291 | Assert(!pVmcb->ctrl.ExitIntInfo.n.u1Valid); NOREF(pVmcb);
|
---|
7292 |
|
---|
7293 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestMF);
|
---|
7294 |
|
---|
7295 | if (!(pCtx->cr0 & X86_CR0_NE))
|
---|
7296 | {
|
---|
7297 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
7298 | PDISSTATE pDis = &pVCpu->hm.s.DisState;
|
---|
7299 | unsigned cbOp;
|
---|
7300 | int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, &cbOp);
|
---|
7301 | if (RT_SUCCESS(rc))
|
---|
7302 | {
|
---|
7303 | /* Convert a #MF into a FERR -> IRQ 13. See @bugref{6117}. */
|
---|
7304 | /** @todo FERR intercept when in nested-guest mode? */
|
---|
7305 | rc = PDMIsaSetIrq(pVCpu->CTX_SUFF(pVM), 13, 1, 0 /* uTagSrc */);
|
---|
7306 | if (RT_SUCCESS(rc))
|
---|
7307 | pCtx->rip += cbOp;
|
---|
7308 | }
|
---|
7309 | else
|
---|
7310 | Log4(("hmR0SvmExitXcptMF: EMInterpretDisasCurrent returned %Rrc uOpCode=%#x\n", rc, pDis->pCurInstr->uOpcode));
|
---|
7311 | return rc;
|
---|
7312 | }
|
---|
7313 |
|
---|
7314 | hmR0SvmSetPendingXcptMF(pVCpu);
|
---|
7315 | return VINF_SUCCESS;
|
---|
7316 | }
|
---|
7317 |
|
---|
7318 |
|
---|
7319 | /**
|
---|
7320 | * \#VMEXIT handler for debug exceptions (SVM_EXIT_EXCEPTION_1). Conditional
|
---|
7321 | * \#VMEXIT.
|
---|
7322 | */
|
---|
7323 | HMSVM_EXIT_DECL hmR0SvmExitXcptDB(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7324 | {
|
---|
7325 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7326 |
|
---|
7327 | /* If this #DB is the result of delivering an event, go back to the interpreter. */
|
---|
7328 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
7329 | if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending))
|
---|
7330 | {
|
---|
7331 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingInterpret);
|
---|
7332 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
7333 | }
|
---|
7334 |
|
---|
7335 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestDB);
|
---|
7336 |
|
---|
7337 | /* This can be a fault-type #DB (instruction breakpoint) or a trap-type #DB (data breakpoint). However, for both cases
|
---|
7338 | DR6 and DR7 are updated to what the exception handler expects. See AMD spec. 15.12.2 "#DB (Debug)". */
|
---|
7339 | PVM pVM = pVCpu->CTX_SUFF(pVM);
|
---|
7340 | PSVMVMCB pVmcb = pVCpu->hm.s.svm.pVmcb;
|
---|
7341 | int rc = DBGFRZTrap01Handler(pVM, pVCpu, CPUMCTX2CORE(pCtx), pVmcb->guest.u64DR6, pVCpu->hm.s.fSingleInstruction);
|
---|
7342 | if (rc == VINF_EM_RAW_GUEST_TRAP)
|
---|
7343 | {
|
---|
7344 | Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> guest trap\n", pVmcb->guest.u64DR6));
|
---|
7345 | if (CPUMIsHyperDebugStateActive(pVCpu))
|
---|
7346 | CPUMSetGuestDR6(pVCpu, CPUMGetGuestDR6(pVCpu) | pVmcb->guest.u64DR6);
|
---|
7347 |
|
---|
7348 | /* Reflect the exception back to the guest. */
|
---|
7349 | hmR0SvmSetPendingXcptDB(pVCpu);
|
---|
7350 | rc = VINF_SUCCESS;
|
---|
7351 | }
|
---|
7352 |
|
---|
7353 | /*
|
---|
7354 | * Update DR6.
|
---|
7355 | */
|
---|
7356 | if (CPUMIsHyperDebugStateActive(pVCpu))
|
---|
7357 | {
|
---|
7358 | Log5(("hmR0SvmExitXcptDB: DR6=%#RX64 -> %Rrc\n", pVmcb->guest.u64DR6, rc));
|
---|
7359 | pVmcb->guest.u64DR6 = X86_DR6_INIT_VAL;
|
---|
7360 | pVmcb->ctrl.u32VmcbCleanBits &= ~HMSVM_VMCB_CLEAN_DRX;
|
---|
7361 | }
|
---|
7362 | else
|
---|
7363 | {
|
---|
7364 | AssertMsg(rc == VINF_SUCCESS, ("rc=%Rrc\n", rc));
|
---|
7365 | Assert(!pVCpu->hm.s.fSingleInstruction && !DBGFIsStepping(pVCpu));
|
---|
7366 | }
|
---|
7367 |
|
---|
7368 | return rc;
|
---|
7369 | }
|
---|
7370 |
|
---|
7371 |
|
---|
7372 | /**
|
---|
7373 | * \#VMEXIT handler for alignment check exceptions (SVM_EXIT_EXCEPTION_17).
|
---|
7374 | * Conditional \#VMEXIT.
|
---|
7375 | */
|
---|
7376 | HMSVM_EXIT_DECL hmR0SvmExitXcptAC(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7377 | {
|
---|
7378 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7379 |
|
---|
7380 | /** @todo if triple-fault is returned in nested-guest scenario convert to a
|
---|
7381 | * shutdown VMEXIT. */
|
---|
7382 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
7383 |
|
---|
7384 | SVMEVENT Event;
|
---|
7385 | Event.u = 0;
|
---|
7386 | Event.n.u1Valid = 1;
|
---|
7387 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
7388 | Event.n.u8Vector = X86_XCPT_AC;
|
---|
7389 | Event.n.u1ErrorCodeValid = 1;
|
---|
7390 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
7391 | return VINF_SUCCESS;
|
---|
7392 | }
|
---|
7393 |
|
---|
7394 |
|
---|
7395 | /**
|
---|
7396 | * \#VMEXIT handler for breakpoint exceptions (SVM_EXIT_EXCEPTION_3).
|
---|
7397 | * Conditional \#VMEXIT.
|
---|
7398 | */
|
---|
7399 | HMSVM_EXIT_DECL hmR0SvmExitXcptBP(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7400 | {
|
---|
7401 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7402 |
|
---|
7403 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
7404 |
|
---|
7405 | int rc = DBGFRZTrap03Handler(pVCpu->CTX_SUFF(pVM), pVCpu, CPUMCTX2CORE(pCtx));
|
---|
7406 | if (rc == VINF_EM_RAW_GUEST_TRAP)
|
---|
7407 | {
|
---|
7408 | SVMEVENT Event;
|
---|
7409 | Event.u = 0;
|
---|
7410 | Event.n.u1Valid = 1;
|
---|
7411 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
7412 | Event.n.u8Vector = X86_XCPT_BP;
|
---|
7413 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
7414 | }
|
---|
7415 |
|
---|
7416 | Assert(rc == VINF_SUCCESS || rc == VINF_EM_RAW_GUEST_TRAP || rc == VINF_EM_DBG_BREAKPOINT);
|
---|
7417 | return rc;
|
---|
7418 | }
|
---|
7419 |
|
---|
7420 |
|
---|
7421 | #if defined(HMSVM_ALWAYS_TRAP_ALL_XCPTS) || defined(VBOX_WITH_NESTED_HWVIRT)
|
---|
7422 | /**
|
---|
7423 | * \#VMEXIT handler for generic exceptions. Conditional \#VMEXIT.
|
---|
7424 | */
|
---|
7425 | HMSVM_EXIT_DECL hmR0SvmExitXcptGeneric(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7426 | {
|
---|
7427 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7428 |
|
---|
7429 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
7430 |
|
---|
7431 | PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
7432 | uint8_t const uVector = pVmcb->ctrl.u64ExitCode - SVM_EXIT_EXCEPTION_0;
|
---|
7433 | uint32_t const uErrCode = pVmcb->ctrl.u64ExitInfo1;
|
---|
7434 | Assert(pSvmTransient->u64ExitCode == pVmcb->ctrl.u64ExitCode);
|
---|
7435 | Assert(uVector <= X86_XCPT_LAST);
|
---|
7436 | Log4(("hmR0SvmExitXcptGeneric: uVector=%#x uErrCode=%u\n", uVector, uErrCode));
|
---|
7437 |
|
---|
7438 |
|
---|
7439 | SVMEVENT Event;
|
---|
7440 | Event.u = 0;
|
---|
7441 | Event.n.u1Valid = 1;
|
---|
7442 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
7443 | Event.n.u8Vector = uVector;
|
---|
7444 | switch (uVector)
|
---|
7445 | {
|
---|
7446 | /* Shouldn't be here for reflecting #PFs (among other things, the fault address isn't passed along). */
|
---|
7447 | case X86_XCPT_PF: AssertMsgFailed(("hmR0SvmExitXcptGeneric: Unexpected exception")); return VERR_SVM_IPE_5;
|
---|
7448 | case X86_XCPT_DF:
|
---|
7449 | case X86_XCPT_TS:
|
---|
7450 | case X86_XCPT_NP:
|
---|
7451 | case X86_XCPT_SS:
|
---|
7452 | case X86_XCPT_GP:
|
---|
7453 | case X86_XCPT_AC:
|
---|
7454 | {
|
---|
7455 | Event.n.u1ErrorCodeValid = 1;
|
---|
7456 | Event.n.u32ErrorCode = uErrCode;
|
---|
7457 | break;
|
---|
7458 | }
|
---|
7459 | }
|
---|
7460 |
|
---|
7461 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
7462 | return VINF_SUCCESS;
|
---|
7463 | }
|
---|
7464 | #endif
|
---|
7465 |
|
---|
7466 | #ifdef VBOX_WITH_NESTED_HWVIRT
|
---|
7467 | /**
|
---|
7468 | * \#VMEXIT handler for #PF occuring while in nested-guest execution
|
---|
7469 | * (SVM_EXIT_EXCEPTION_14). Conditional \#VMEXIT.
|
---|
7470 | */
|
---|
7471 | HMSVM_EXIT_DECL hmR0SvmExitXcptPFNested(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7472 | {
|
---|
7473 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7474 |
|
---|
7475 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
7476 |
|
---|
7477 | /* See AMD spec. 15.12.15 "#PF (Page Fault)". */
|
---|
7478 | PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
7479 | uint32_t u32ErrCode = pVmcb->ctrl.u64ExitInfo1;
|
---|
7480 | uint64_t const uFaultAddress = pVmcb->ctrl.u64ExitInfo2;
|
---|
7481 |
|
---|
7482 | Log4(("#PFNested: uFaultAddress=%#RX64 CS:RIP=%#04x:%#RX64 u32ErrCode=%#RX32 CR3=%#RX64\n", uFaultAddress, pCtx->cs.Sel,
|
---|
7483 | pCtx->rip, u32ErrCode, pCtx->cr3));
|
---|
7484 |
|
---|
7485 | /* If it's a vectoring #PF, emulate injecting the original event injection as PGMTrap0eHandler() is incapable
|
---|
7486 | of differentiating between instruction emulation and event injection that caused a #PF. See @bugref{6607}. */
|
---|
7487 | if (pSvmTransient->fVectoringPF)
|
---|
7488 | {
|
---|
7489 | Assert(pVCpu->hm.s.Event.fPending);
|
---|
7490 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
7491 | }
|
---|
7492 |
|
---|
7493 | Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
|
---|
7494 |
|
---|
7495 | TRPMAssertXcptPF(pVCpu, uFaultAddress, u32ErrCode);
|
---|
7496 | int rc = PGMTrap0eHandler(pVCpu, u32ErrCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
|
---|
7497 |
|
---|
7498 | Log4(("#PFNested: rc=%Rrc\n", rc));
|
---|
7499 |
|
---|
7500 | if (rc == VINF_SUCCESS)
|
---|
7501 | {
|
---|
7502 | /* Successfully synced shadow pages tables or emulated an MMIO instruction. */
|
---|
7503 | TRPMResetTrap(pVCpu);
|
---|
7504 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPF);
|
---|
7505 | HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
|
---|
7506 | return rc;
|
---|
7507 | }
|
---|
7508 |
|
---|
7509 | if (rc == VINF_EM_RAW_GUEST_TRAP)
|
---|
7510 | {
|
---|
7511 | pVCpu->hm.s.Event.fPending = false; /* In case it's a contributory or vectoring #PF. */
|
---|
7512 |
|
---|
7513 | if (!pSvmTransient->fVectoringDoublePF)
|
---|
7514 | {
|
---|
7515 | /* It's a nested-guest page fault and needs to be reflected to the nested-guest. */
|
---|
7516 | u32ErrCode = TRPMGetErrorCode(pVCpu); /* The error code might have been changed. */
|
---|
7517 | TRPMResetTrap(pVCpu);
|
---|
7518 | hmR0SvmSetPendingXcptPF(pVCpu, pCtx, u32ErrCode, uFaultAddress);
|
---|
7519 | }
|
---|
7520 | else
|
---|
7521 | {
|
---|
7522 | /* A nested-guest page-fault occurred during delivery of a page-fault. Inject #DF. */
|
---|
7523 | TRPMResetTrap(pVCpu);
|
---|
7524 | hmR0SvmSetPendingXcptDF(pVCpu);
|
---|
7525 | Log4(("#PF: Pending #DF due to vectoring #PF\n"));
|
---|
7526 | }
|
---|
7527 |
|
---|
7528 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitGuestPF);
|
---|
7529 | return VINF_SUCCESS;
|
---|
7530 | }
|
---|
7531 |
|
---|
7532 | TRPMResetTrap(pVCpu);
|
---|
7533 | STAM_COUNTER_INC(&pVCpu->hm.s.StatExitShadowPFEM);
|
---|
7534 | return rc;
|
---|
7535 | }
|
---|
7536 |
|
---|
7537 |
|
---|
7538 | /**
|
---|
7539 | * \#VMEXIT handler for CLGI (SVM_EXIT_CLGI). Conditional \#VMEXIT.
|
---|
7540 | */
|
---|
7541 | HMSVM_EXIT_DECL hmR0SvmExitClgi(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7542 | {
|
---|
7543 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7544 |
|
---|
7545 | /** @todo Stat. */
|
---|
7546 | /* STAM_COUNTER_INC(&pVCpu->hm.s.StatExitClgi); */
|
---|
7547 | uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
|
---|
7548 | VBOXSTRICTRC rcStrict = IEMExecDecodedClgi(pVCpu, cbInstr);
|
---|
7549 |
|
---|
7550 | /*
|
---|
7551 | * The guest should no longer receive interrupts. Until VGIF is supported,
|
---|
7552 | * clear virtual interrupt intercepts here.
|
---|
7553 | */
|
---|
7554 | PSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
7555 | hmR0SvmClearVirtIntrIntercept(pVmcb);
|
---|
7556 |
|
---|
7557 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
7558 | }
|
---|
7559 |
|
---|
7560 |
|
---|
7561 | /**
|
---|
7562 | * \#VMEXIT handler for STGI (SVM_EXIT_STGI). Conditional \#VMEXIT.
|
---|
7563 | */
|
---|
7564 | HMSVM_EXIT_DECL hmR0SvmExitStgi(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7565 | {
|
---|
7566 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7567 |
|
---|
7568 | /** @todo Stat. */
|
---|
7569 | /* STAM_COUNTER_INC(&pVCpu->hm.s.StatExitStgi); */
|
---|
7570 | uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
|
---|
7571 | VBOXSTRICTRC rcStrict = IEMExecDecodedStgi(pVCpu, cbInstr);
|
---|
7572 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
7573 | }
|
---|
7574 |
|
---|
7575 |
|
---|
7576 | /**
|
---|
7577 | * \#VMEXIT handler for VMLOAD (SVM_EXIT_VMLOAD). Conditional \#VMEXIT.
|
---|
7578 | */
|
---|
7579 | HMSVM_EXIT_DECL hmR0SvmExitVmload(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7580 | {
|
---|
7581 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7582 |
|
---|
7583 | #ifdef VBOX_STRICT
|
---|
7584 | PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
7585 | Assert(pVmcb);
|
---|
7586 | Assert(!pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload);
|
---|
7587 | RT_NOREF(pVmcb);
|
---|
7588 | #endif
|
---|
7589 |
|
---|
7590 | /** @todo Stat. */
|
---|
7591 | /* STAM_COUNTER_INC(&pVCpu->hm.s.StatExitVmload); */
|
---|
7592 | uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
|
---|
7593 | VBOXSTRICTRC rcStrict = IEMExecDecodedVmload(pVCpu, cbInstr);
|
---|
7594 | if (rcStrict == VINF_SUCCESS)
|
---|
7595 | {
|
---|
7596 | /* We skip flagging changes made to LSTAR, STAR, SFMASK and other MSRs as they are always re-loaded. */
|
---|
7597 | HMCPU_CF_SET(pVCpu, HM_CHANGED_GUEST_SEGMENT_REGS
|
---|
7598 | | HM_CHANGED_GUEST_TR
|
---|
7599 | | HM_CHANGED_GUEST_LDTR);
|
---|
7600 | }
|
---|
7601 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
7602 | }
|
---|
7603 |
|
---|
7604 |
|
---|
7605 | /**
|
---|
7606 | * \#VMEXIT handler for VMSAVE (SVM_EXIT_VMSAVE). Conditional \#VMEXIT.
|
---|
7607 | */
|
---|
7608 | HMSVM_EXIT_DECL hmR0SvmExitVmsave(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7609 | {
|
---|
7610 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7611 |
|
---|
7612 | #ifdef VBOX_STRICT
|
---|
7613 | PCSVMVMCB pVmcb = hmR0SvmGetCurrentVmcb(pVCpu, pCtx);
|
---|
7614 | Assert(pVmcb);
|
---|
7615 | Assert(!pVmcb->ctrl.LbrVirt.n.u1VirtVmsaveVmload);
|
---|
7616 | RT_NOREF(pVmcb);
|
---|
7617 | #endif
|
---|
7618 |
|
---|
7619 | /** @todo Stat. */
|
---|
7620 | /* STAM_COUNTER_INC(&pVCpu->hm.s.StatExitVmsave); */
|
---|
7621 | uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
|
---|
7622 | VBOXSTRICTRC rcStrict = IEMExecDecodedVmsave(pVCpu, cbInstr);
|
---|
7623 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
7624 | }
|
---|
7625 |
|
---|
7626 |
|
---|
7627 | /**
|
---|
7628 | * \#VMEXIT handler for INVLPGA (SVM_EXIT_INVLPGA). Conditional \#VMEXIT.
|
---|
7629 | */
|
---|
7630 | HMSVM_EXIT_DECL hmR0SvmExitInvlpga(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7631 | {
|
---|
7632 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7633 | /** @todo Stat. */
|
---|
7634 | /* STAM_COUNTER_INC(&pVCpu->hm.s.StatExitInvlpga); */
|
---|
7635 | uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
|
---|
7636 | VBOXSTRICTRC rcStrict = IEMExecDecodedInvlpga(pVCpu, cbInstr);
|
---|
7637 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
7638 | }
|
---|
7639 |
|
---|
7640 |
|
---|
7641 | /**
|
---|
7642 | * \#VMEXIT handler for STGI (SVM_EXIT_VMRUN). Conditional \#VMEXIT.
|
---|
7643 | */
|
---|
7644 | HMSVM_EXIT_DECL hmR0SvmExitVmrun(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7645 | {
|
---|
7646 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7647 | /** @todo Stat. */
|
---|
7648 | /* STAM_COUNTER_INC(&pVCpu->hm.s.StatExitVmrun); */
|
---|
7649 | #if 0
|
---|
7650 | VBOXSTRICTRC rcStrict;
|
---|
7651 | uint8_t const cbInstr = hmR0SvmGetInstrLengthHwAssist(pVCpu, pCtx, 3);
|
---|
7652 | rcStrict = IEMExecDecodedVmrun(pVCpu, cbInstr);
|
---|
7653 | Log4(("IEMExecDecodedVmrun: returned %d\n", VBOXSTRICTRC_VAL(rcStrict)));
|
---|
7654 | if (rcStrict == VINF_SUCCESS)
|
---|
7655 | {
|
---|
7656 | rcStrict = VINF_SVM_VMRUN;
|
---|
7657 | HMCPU_CF_SET(pVCpu, HM_CHANGED_ALL_GUEST);
|
---|
7658 | }
|
---|
7659 | return VBOXSTRICTRC_VAL(rcStrict);
|
---|
7660 | #endif
|
---|
7661 | return VERR_EM_INTERPRETER;
|
---|
7662 | }
|
---|
7663 |
|
---|
7664 |
|
---|
7665 | /**
|
---|
7666 | * Nested-guest \#VMEXIT handler for debug exceptions (SVM_EXIT_EXCEPTION_1).
|
---|
7667 | * Unconditional \#VMEXIT.
|
---|
7668 | */
|
---|
7669 | HMSVM_EXIT_DECL hmR0SvmNestedExitXcptDB(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7670 | {
|
---|
7671 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7672 |
|
---|
7673 | /* If this #DB is the result of delivering an event, go back to the interpreter. */
|
---|
7674 | /** @todo if triple-fault is returned in nested-guest scenario convert to a
|
---|
7675 | * shutdown VMEXIT. */
|
---|
7676 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
7677 | if (RT_UNLIKELY(pVCpu->hm.s.Event.fPending))
|
---|
7678 | {
|
---|
7679 | STAM_COUNTER_INC(&pVCpu->hm.s.StatInjectPendingInterpret);
|
---|
7680 | return VINF_EM_RAW_INJECT_TRPM_EVENT;
|
---|
7681 | }
|
---|
7682 |
|
---|
7683 | hmR0SvmSetPendingXcptDB(pVCpu);
|
---|
7684 | return VINF_SUCCESS;
|
---|
7685 | }
|
---|
7686 |
|
---|
7687 |
|
---|
7688 | /**
|
---|
7689 | * Nested-guest \#VMEXIT handler for breakpoint exceptions (SVM_EXIT_EXCEPTION_3).
|
---|
7690 | * Conditional \#VMEXIT.
|
---|
7691 | */
|
---|
7692 | HMSVM_EXIT_DECL hmR0SvmNestedExitXcptBP(PVMCPU pVCpu, PCPUMCTX pCtx, PSVMTRANSIENT pSvmTransient)
|
---|
7693 | {
|
---|
7694 | HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
|
---|
7695 |
|
---|
7696 | /** @todo if triple-fault is returned in nested-guest scenario convert to a
|
---|
7697 | * shutdown VMEXIT. */
|
---|
7698 | HMSVM_CHECK_EXIT_DUE_TO_EVENT_DELIVERY();
|
---|
7699 |
|
---|
7700 | SVMEVENT Event;
|
---|
7701 | Event.u = 0;
|
---|
7702 | Event.n.u1Valid = 1;
|
---|
7703 | Event.n.u3Type = SVM_EVENT_EXCEPTION;
|
---|
7704 | Event.n.u8Vector = X86_XCPT_BP;
|
---|
7705 | hmR0SvmSetPendingEvent(pVCpu, &Event, 0 /* GCPtrFaultAddress */);
|
---|
7706 | return VINF_SUCCESS;
|
---|
7707 | }
|
---|
7708 |
|
---|
7709 | #endif /* VBOX_WITH_NESTED_HWVIRT */
|
---|
7710 |
|
---|
7711 |
|
---|
7712 | /** @} */
|
---|
7713 |
|
---|