/* $Id: HM.cpp 46587 2013-06-17 12:55:39Z vboxsync $ */ /** @file * HM - Intel/AMD VM Hardware Support Manager. */ /* * Copyright (C) 2006-2013 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /******************************************************************************* * Header Files * *******************************************************************************/ #define LOG_GROUP LOG_GROUP_HM #include #include #include #include #include #include #include #include #include #include #include #include #ifdef VBOX_WITH_REM # include #endif #include #include #include "HMInternal.h" #include #include #include #include #include #include #include #include #include #include #include /******************************************************************************* * Global Variables * *******************************************************************************/ #ifdef VBOX_WITH_STATISTICS # define EXIT_REASON(def, val, str) #def " - " #val " - " str # define EXIT_REASON_NIL() NULL /** Exit reason descriptions for VT-x, used to describe statistics. */ static const char * const g_apszVTxExitReasons[MAX_EXITREASON_STAT] = { EXIT_REASON(VMX_EXIT_XCPT_NMI , 0, "Exception or non-maskable interrupt (NMI)."), EXIT_REASON(VMX_EXIT_EXT_INT , 1, "External interrupt."), EXIT_REASON(VMX_EXIT_TRIPLE_FAULT , 2, "Triple fault."), EXIT_REASON(VMX_EXIT_INIT_SIGNAL , 3, "INIT signal."), EXIT_REASON(VMX_EXIT_SIPI , 4, "Start-up IPI (SIPI)."), EXIT_REASON(VMX_EXIT_IO_SMI_IRQ , 5, "I/O system-management interrupt (SMI)."), EXIT_REASON(VMX_EXIT_SMI_IRQ , 6, "Other SMI."), EXIT_REASON(VMX_EXIT_INT_WINDOW , 7, "Interrupt window."), EXIT_REASON_NIL(), EXIT_REASON(VMX_EXIT_TASK_SWITCH , 9, "Task switch."), EXIT_REASON(VMX_EXIT_CPUID , 10, "Guest attempted to execute CPUID."), EXIT_REASON_NIL(), EXIT_REASON(VMX_EXIT_HLT , 12, "Guest attempted to execute HLT."), EXIT_REASON(VMX_EXIT_INVD , 13, "Guest attempted to execute INVD."), EXIT_REASON(VMX_EXIT_INVLPG , 14, "Guest attempted to execute INVLPG."), EXIT_REASON(VMX_EXIT_RDPMC , 15, "Guest attempted to execute RDPMC."), EXIT_REASON(VMX_EXIT_RDTSC , 16, "Guest attempted to execute RDTSC."), EXIT_REASON(VMX_EXIT_RSM , 17, "Guest attempted to execute RSM in SMM."), EXIT_REASON(VMX_EXIT_VMCALL , 18, "Guest attempted to execute VMCALL."), EXIT_REASON(VMX_EXIT_VMCLEAR , 19, "Guest attempted to execute VMCLEAR."), EXIT_REASON(VMX_EXIT_VMLAUNCH , 20, "Guest attempted to execute VMLAUNCH."), EXIT_REASON(VMX_EXIT_VMPTRLD , 21, "Guest attempted to execute VMPTRLD."), EXIT_REASON(VMX_EXIT_VMPTRST , 22, "Guest attempted to execute VMPTRST."), EXIT_REASON(VMX_EXIT_VMREAD , 23, "Guest attempted to execute VMREAD."), EXIT_REASON(VMX_EXIT_VMRESUME , 24, "Guest attempted to execute VMRESUME."), EXIT_REASON(VMX_EXIT_VMWRITE , 25, "Guest attempted to execute VMWRITE."), EXIT_REASON(VMX_EXIT_VMXOFF , 26, "Guest attempted to execute VMXOFF."), EXIT_REASON(VMX_EXIT_VMXON , 27, "Guest attempted to execute VMXON."), EXIT_REASON(VMX_EXIT_MOV_CRX , 28, "Control-register accesses."), EXIT_REASON(VMX_EXIT_MOV_DRX , 29, "Debug-register accesses."), EXIT_REASON(VMX_EXIT_PORT_IO , 30, "I/O instruction."), EXIT_REASON(VMX_EXIT_RDMSR , 31, "Guest attempted to execute RDMSR."), EXIT_REASON(VMX_EXIT_WRMSR , 32, "Guest attempted to execute WRMSR."), EXIT_REASON(VMX_EXIT_ERR_INVALID_GUEST_STATE, 33, "VM-entry failure due to invalid guest state."), EXIT_REASON(VMX_EXIT_ERR_MSR_LOAD , 34, "VM-entry failure due to MSR loading."), EXIT_REASON_NIL(), EXIT_REASON(VMX_EXIT_MWAIT , 36, "Guest executed MWAIT."), EXIT_REASON(VMX_EXIT_MTF , 37, "Monitor Trap Flag."), EXIT_REASON_NIL(), EXIT_REASON(VMX_EXIT_MONITOR , 39, "Guest attempted to execute MONITOR."), EXIT_REASON(VMX_EXIT_PAUSE , 40, "Guest attempted to execute PAUSE."), EXIT_REASON(VMX_EXIT_ERR_MACHINE_CHECK , 41, "VM-entry failure due to machine-check."), EXIT_REASON_NIL(), EXIT_REASON(VMX_EXIT_TPR_BELOW_THRESHOLD, 43, "TPR below threshold. Guest attempted to execute MOV to CR8."), EXIT_REASON(VMX_EXIT_APIC_ACCESS , 44, "APIC access. Guest attempted to access memory at a physical address on the APIC-access page."), EXIT_REASON_NIL(), EXIT_REASON(VMX_EXIT_XDTR_ACCESS , 46, "Access to GDTR or IDTR. Guest attempted to execute LGDT, LIDT, SGDT, or SIDT."), EXIT_REASON(VMX_EXIT_TR_ACCESS , 47, "Access to LDTR or TR. Guest attempted to execute LLDT, LTR, SLDT, or STR."), EXIT_REASON(VMX_EXIT_EPT_VIOLATION , 48, "EPT violation. An attempt to access memory with a guest-physical address was disallowed by the configuration of the EPT paging structures."), EXIT_REASON(VMX_EXIT_EPT_MISCONFIG , 49, "EPT misconfiguration. An attempt to access memory with a guest-physical address encountered a misconfigured EPT paging-structure entry."), EXIT_REASON(VMX_EXIT_INVEPT , 50, "Guest attempted to execute INVEPT."), EXIT_REASON(VMX_EXIT_RDTSCP , 51, "Guest attempted to execute RDTSCP."), EXIT_REASON(VMX_EXIT_PREEMPT_TIMER , 52, "VMX-preemption timer expired."), EXIT_REASON(VMX_EXIT_INVVPID , 53, "Guest attempted to execute INVVPID."), EXIT_REASON(VMX_EXIT_WBINVD , 54, "Guest attempted to execute WBINVD."), EXIT_REASON(VMX_EXIT_XSETBV , 55, "Guest attempted to execute XSETBV."), EXIT_REASON_NIL(), EXIT_REASON(VMX_EXIT_RDRAND , 57, "Guest attempted to execute RDRAND."), EXIT_REASON(VMX_EXIT_INVPCID , 58, "Guest attempted to execute INVPCID."), EXIT_REASON(VMX_EXIT_VMFUNC , 59, "Guest attempted to execute VMFUNC.") }; /** Exit reason descriptions for AMD-V, used to describe statistics. */ static const char * const g_apszAmdVExitReasons[MAX_EXITREASON_STAT] = { EXIT_REASON(SVM_EXIT_READ_CR0 , 0, "Read CR0."), EXIT_REASON(SVM_EXIT_READ_CR1 , 1, "Read CR1."), EXIT_REASON(SVM_EXIT_READ_CR2 , 2, "Read CR2."), EXIT_REASON(SVM_EXIT_READ_CR3 , 3, "Read CR3."), EXIT_REASON(SVM_EXIT_READ_CR4 , 4, "Read CR4."), EXIT_REASON(SVM_EXIT_READ_CR5 , 5, "Read CR5."), EXIT_REASON(SVM_EXIT_READ_CR6 , 6, "Read CR6."), EXIT_REASON(SVM_EXIT_READ_CR7 , 7, "Read CR7."), EXIT_REASON(SVM_EXIT_READ_CR8 , 8, "Read CR8."), EXIT_REASON(SVM_EXIT_READ_CR9 , 9, "Read CR9."), EXIT_REASON(SVM_EXIT_READ_CR10 , 10, "Read CR10."), EXIT_REASON(SVM_EXIT_READ_CR11 , 11, "Read CR11."), EXIT_REASON(SVM_EXIT_READ_CR12 , 12, "Read CR12."), EXIT_REASON(SVM_EXIT_READ_CR13 , 13, "Read CR13."), EXIT_REASON(SVM_EXIT_READ_CR14 , 14, "Read CR14."), EXIT_REASON(SVM_EXIT_READ_CR15 , 15, "Read CR15."), EXIT_REASON(SVM_EXIT_WRITE_CR0 , 16, "Write CR0."), EXIT_REASON(SVM_EXIT_WRITE_CR1 , 17, "Write CR1."), EXIT_REASON(SVM_EXIT_WRITE_CR2 , 18, "Write CR2."), EXIT_REASON(SVM_EXIT_WRITE_CR3 , 19, "Write CR3."), EXIT_REASON(SVM_EXIT_WRITE_CR4 , 20, "Write CR4."), EXIT_REASON(SVM_EXIT_WRITE_CR5 , 21, "Write CR5."), EXIT_REASON(SVM_EXIT_WRITE_CR6 , 22, "Write CR6."), EXIT_REASON(SVM_EXIT_WRITE_CR7 , 23, "Write CR7."), EXIT_REASON(SVM_EXIT_WRITE_CR8 , 24, "Write CR8."), EXIT_REASON(SVM_EXIT_WRITE_CR9 , 25, "Write CR9."), EXIT_REASON(SVM_EXIT_WRITE_CR10 , 26, "Write CR10."), EXIT_REASON(SVM_EXIT_WRITE_CR11 , 27, "Write CR11."), EXIT_REASON(SVM_EXIT_WRITE_CR12 , 28, "Write CR12."), EXIT_REASON(SVM_EXIT_WRITE_CR13 , 29, "Write CR13."), EXIT_REASON(SVM_EXIT_WRITE_CR14 , 30, "Write CR14."), EXIT_REASON(SVM_EXIT_WRITE_CR15 , 31, "Write CR15."), EXIT_REASON(SVM_EXIT_READ_DR0 , 32, "Read DR0."), EXIT_REASON(SVM_EXIT_READ_DR1 , 33, "Read DR1."), EXIT_REASON(SVM_EXIT_READ_DR2 , 34, "Read DR2."), EXIT_REASON(SVM_EXIT_READ_DR3 , 35, "Read DR3."), EXIT_REASON(SVM_EXIT_READ_DR4 , 36, "Read DR4."), EXIT_REASON(SVM_EXIT_READ_DR5 , 37, "Read DR5."), EXIT_REASON(SVM_EXIT_READ_DR6 , 38, "Read DR6."), EXIT_REASON(SVM_EXIT_READ_DR7 , 39, "Read DR7."), EXIT_REASON(SVM_EXIT_READ_DR8 , 40, "Read DR8."), EXIT_REASON(SVM_EXIT_READ_DR9 , 41, "Read DR9."), EXIT_REASON(SVM_EXIT_READ_DR10 , 42, "Read DR10."), EXIT_REASON(SVM_EXIT_READ_DR11 , 43, "Read DR11"), EXIT_REASON(SVM_EXIT_READ_DR12 , 44, "Read DR12."), EXIT_REASON(SVM_EXIT_READ_DR13 , 45, "Read DR13."), EXIT_REASON(SVM_EXIT_READ_DR14 , 46, "Read DR14."), EXIT_REASON(SVM_EXIT_READ_DR15 , 47, "Read DR15."), EXIT_REASON(SVM_EXIT_WRITE_DR0 , 48, "Write DR0."), EXIT_REASON(SVM_EXIT_WRITE_DR1 , 49, "Write DR1."), EXIT_REASON(SVM_EXIT_WRITE_DR2 , 50, "Write DR2."), EXIT_REASON(SVM_EXIT_WRITE_DR3 , 51, "Write DR3."), EXIT_REASON(SVM_EXIT_WRITE_DR4 , 52, "Write DR4."), EXIT_REASON(SVM_EXIT_WRITE_DR5 , 53, "Write DR5."), EXIT_REASON(SVM_EXIT_WRITE_DR6 , 54, "Write DR6."), EXIT_REASON(SVM_EXIT_WRITE_DR7 , 55, "Write DR7."), EXIT_REASON(SVM_EXIT_WRITE_DR8 , 56, "Write DR8."), EXIT_REASON(SVM_EXIT_WRITE_DR9 , 57, "Write DR9."), EXIT_REASON(SVM_EXIT_WRITE_DR10 , 58, "Write DR10."), EXIT_REASON(SVM_EXIT_WRITE_DR11 , 59, "Write DR11."), EXIT_REASON(SVM_EXIT_WRITE_DR12 , 60, "Write DR12."), EXIT_REASON(SVM_EXIT_WRITE_DR13 , 61, "Write DR13."), EXIT_REASON(SVM_EXIT_WRITE_DR14 , 62, "Write DR14."), EXIT_REASON(SVM_EXIT_WRITE_DR15 , 63, "Write DR15."), EXIT_REASON(SVM_EXIT_EXCEPTION_0 , 64, "Exception Vector 0 (0x0)."), EXIT_REASON(SVM_EXIT_EXCEPTION_1 , 65, "Exception Vector 1 (0x1)."), EXIT_REASON(SVM_EXIT_EXCEPTION_2 , 66, "Exception Vector 2 (0x2)."), EXIT_REASON(SVM_EXIT_EXCEPTION_3 , 67, "Exception Vector 3 (0x3)."), EXIT_REASON(SVM_EXIT_EXCEPTION_4 , 68, "Exception Vector 4 (0x4)."), EXIT_REASON(SVM_EXIT_EXCEPTION_5 , 69, "Exception Vector 5 (0x5)."), EXIT_REASON(SVM_EXIT_EXCEPTION_6 , 70, "Exception Vector 6 (0x6)."), EXIT_REASON(SVM_EXIT_EXCEPTION_7 , 71, "Exception Vector 7 (0x7)."), EXIT_REASON(SVM_EXIT_EXCEPTION_8 , 72, "Exception Vector 8 (0x8)."), EXIT_REASON(SVM_EXIT_EXCEPTION_9 , 73, "Exception Vector 9 (0x9)."), EXIT_REASON(SVM_EXIT_EXCEPTION_A , 74, "Exception Vector 10 (0xA)."), EXIT_REASON(SVM_EXIT_EXCEPTION_B , 75, "Exception Vector 11 (0xB)."), EXIT_REASON(SVM_EXIT_EXCEPTION_C , 76, "Exception Vector 12 (0xC)."), EXIT_REASON(SVM_EXIT_EXCEPTION_D , 77, "Exception Vector 13 (0xD)."), EXIT_REASON(SVM_EXIT_EXCEPTION_E , 78, "Exception Vector 14 (0xE)."), EXIT_REASON(SVM_EXIT_EXCEPTION_F , 79, "Exception Vector 15 (0xF)."), EXIT_REASON(SVM_EXIT_EXCEPTION_10 , 80, "Exception Vector 16 (0x10)."), EXIT_REASON(SVM_EXIT_EXCEPTION_11 , 81, "Exception Vector 17 (0x11)."), EXIT_REASON(SVM_EXIT_EXCEPTION_12 , 82, "Exception Vector 18 (0x12)."), EXIT_REASON(SVM_EXIT_EXCEPTION_13 , 83, "Exception Vector 19 (0x13)."), EXIT_REASON(SVM_EXIT_EXCEPTION_14 , 84, "Exception Vector 20 (0x14)."), EXIT_REASON(SVM_EXIT_EXCEPTION_15 , 85, "Exception Vector 22 (0x15)."), EXIT_REASON(SVM_EXIT_EXCEPTION_16 , 86, "Exception Vector 22 (0x16)."), EXIT_REASON(SVM_EXIT_EXCEPTION_17 , 87, "Exception Vector 23 (0x17)."), EXIT_REASON(SVM_EXIT_EXCEPTION_18 , 88, "Exception Vector 24 (0x18)."), EXIT_REASON(SVM_EXIT_EXCEPTION_19 , 89, "Exception Vector 25 (0x19)."), EXIT_REASON(SVM_EXIT_EXCEPTION_1A , 90, "Exception Vector 26 (0x1A)."), EXIT_REASON(SVM_EXIT_EXCEPTION_1B , 91, "Exception Vector 27 (0x1B)."), EXIT_REASON(SVM_EXIT_EXCEPTION_1C , 92, "Exception Vector 28 (0x1C)."), EXIT_REASON(SVM_EXIT_EXCEPTION_1D , 93, "Exception Vector 29 (0x1D)."), EXIT_REASON(SVM_EXIT_EXCEPTION_1E , 94, "Exception Vector 30 (0x1E)."), EXIT_REASON(SVM_EXIT_EXCEPTION_1F , 95, "Exception Vector 31 (0x1F)."), EXIT_REASON(SVM_EXIT_INTR , 96, "Physical maskable interrupt."), EXIT_REASON(SVM_EXIT_NMI , 97, "Physical non-maskable interrupt."), EXIT_REASON(SVM_EXIT_SMI , 98, "System management interrupt."), EXIT_REASON(SVM_EXIT_INIT , 99, "Physical INIT signal."), EXIT_REASON(SVM_EXIT_VINTR ,100, "Virtual interrupt."), EXIT_REASON(SVM_EXIT_CR0_SEL_WRITE ,101, "Write to CR0 that changed any bits other than CR0.TS or CR0.MP."), EXIT_REASON(SVM_EXIT_IDTR_READ ,102, "Read IDTR"), EXIT_REASON(SVM_EXIT_GDTR_READ ,103, "Read GDTR"), EXIT_REASON(SVM_EXIT_LDTR_READ ,104, "Read LDTR."), EXIT_REASON(SVM_EXIT_TR_READ ,105, "Read TR."), EXIT_REASON(SVM_EXIT_TR_READ ,106, "Write IDTR."), EXIT_REASON(SVM_EXIT_TR_READ ,107, "Write GDTR."), EXIT_REASON(SVM_EXIT_TR_READ ,108, "Write LDTR."), EXIT_REASON(SVM_EXIT_TR_READ ,109, "Write TR."), EXIT_REASON(SVM_EXIT_RDTSC ,110, "RDTSC instruction."), EXIT_REASON(SVM_EXIT_RDPMC ,111, "RDPMC instruction."), EXIT_REASON(SVM_EXIT_PUSHF ,112, "PUSHF instruction."), EXIT_REASON(SVM_EXIT_POPF ,113, "POPF instruction."), EXIT_REASON(SVM_EXIT_CPUID ,114, "CPUID instruction."), EXIT_REASON(SVM_EXIT_RSM ,115, "RSM instruction."), EXIT_REASON(SVM_EXIT_IRET ,116, "IRET instruction."), EXIT_REASON(SVM_EXIT_SWINT ,117, "Software interrupt (INTn instructions)."), EXIT_REASON(SVM_EXIT_INVD ,118, "INVD instruction."), EXIT_REASON(SVM_EXIT_PAUSE ,119, "PAUSE instruction."), EXIT_REASON(SVM_EXIT_HLT ,120, "HLT instruction."), EXIT_REASON(SVM_EXIT_INVLPG ,121, "INVLPG instruction."), EXIT_REASON(SVM_EXIT_INVLPGA ,122, "INVLPGA instruction."), EXIT_REASON(SVM_EXIT_IOIO ,123, "IN/OUT accessing protected port (EXITINFO1 field provides more information)."), EXIT_REASON(SVM_EXIT_MSR ,124, "RDMSR or WRMSR access to protected MSR."), EXIT_REASON(SVM_EXIT_TASK_SWITCH ,125, "Task switch."), EXIT_REASON(SVM_EXIT_FERR_FREEZE ,126, "Legacy FPU handling enabled; processor is frozen in an x87/mmx instruction waiting for an interrupt"), EXIT_REASON(SVM_EXIT_SHUTDOWN ,127, "Shutdown."), EXIT_REASON(SVM_EXIT_VMRUN ,128, "VMRUN instruction."), EXIT_REASON(SVM_EXIT_VMMCALL ,129, "VMCALL instruction."), EXIT_REASON(SVM_EXIT_VMLOAD ,130, "VMLOAD instruction."), EXIT_REASON(SVM_EXIT_VMSAVE ,131, "VMSAVE instruction."), EXIT_REASON(SVM_EXIT_STGI ,132, "STGI instruction."), EXIT_REASON(SVM_EXIT_CLGI ,133, "CLGI instruction."), EXIT_REASON(SVM_EXIT_SKINIT ,134, "SKINIT instruction."), EXIT_REASON(SVM_EXIT_RDTSCP ,135, "RDTSCP instruction."), EXIT_REASON(SVM_EXIT_ICEBP ,136, "ICEBP instruction."), EXIT_REASON(SVM_EXIT_WBINVD ,137, "WBINVD instruction."), EXIT_REASON(SVM_EXIT_MONITOR ,138, "MONITOR instruction."), EXIT_REASON(SVM_EXIT_MWAIT ,139, "MWAIT instruction."), EXIT_REASON(SVM_EXIT_MWAIT_ARMED ,140, "MWAIT instruction when armed."), EXIT_REASON(SVM_EXIT_NPF ,1024, "Nested paging: host-level page fault occurred (EXITINFO1 contains fault errorcode; EXITINFO2 contains the guest physical address causing the fault)."), EXIT_REASON_NIL() }; # undef EXIT_REASON # undef EXIT_REASON_NIL #endif /* VBOX_WITH_STATISTICS */ #define HMVMX_REPORT_FEATURE(allowed1, disallowed0, featflag) \ do { \ if ((allowed1) & (featflag)) \ LogRel(("HM: " #featflag "\n")); \ else \ LogRel(("HM: " #featflag " *must* be cleared\n")); \ if ((disallowed0) & (featflag)) \ LogRel(("HM: " #featflag " *must* be set\n")); \ } while (0) #define HMVMX_REPORT_ALLOWED_FEATURE(allowed1, featflag) \ do { \ if ((allowed1) & (featflag)) \ LogRel(("HM: " #featflag "\n")); \ else \ LogRel(("HM: " #featflag " not supported\n")); \ } while (0) #define HMVMX_REPORT_CAPABILITY(msrcaps, cap) \ do { \ if ((msrcaps) & (cap)) \ LogRel(("HM: " #cap "\n")); \ } while (0) /******************************************************************************* * Internal Functions * *******************************************************************************/ static DECLCALLBACK(int) hmR3Save(PVM pVM, PSSMHANDLE pSSM); static DECLCALLBACK(int) hmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass); static int hmR3InitCPU(PVM pVM); static int hmR3InitFinalizeR0(PVM pVM); static int hmR3InitFinalizeR0Intel(PVM pVM); static int hmR3InitFinalizeR0Amd(PVM pVM); static int hmR3TermCPU(PVM pVM); /** * Initializes the HM. * * This reads the config and check whether VT-x or AMD-V hardware is available * if configured to use it. This is one of the very first components to be * initialized after CFGM, so that we can fall back to raw-mode early in the * initialization process. * * Note that a lot of the set up work is done in ring-0 and thus postponed till * the ring-3 and ring-0 callback to HMR3InitCompleted. * * @returns VBox status code. * @param pVM Pointer to the VM. * * @remarks Be careful with what we call here, since most of the VMM components * are uninitialized. */ VMMR3_INT_DECL(int) HMR3Init(PVM pVM) { LogFlow(("HMR3Init\n")); /* * Assert alignment and sizes. */ AssertCompileMemberAlignment(VM, hm.s, 32); AssertCompile(sizeof(pVM->hm.s) <= sizeof(pVM->hm.padding)); /* * Register the saved state data unit. */ int rc = SSMR3RegisterInternal(pVM, "HWACCM", 0, HM_SSM_VERSION, sizeof(HM), NULL, NULL, NULL, NULL, hmR3Save, NULL, NULL, hmR3Load, NULL); if (RT_FAILURE(rc)) return rc; /* * Misc initialisation. */ //pVM->hm.s.vmx.fSupported = false; //pVM->hm.s.svm.fSupported = false; //pVM->hm.s.vmx.fEnabled = false; //pVM->hm.s.svm.fEnabled = false; //pVM->hm.s.fNestedPaging = false; /* * Read configuration. */ PCFGMNODE pCfgHM = CFGMR3GetChild(CFGMR3GetRoot(pVM), "HM/"); /** @cfgm{/HM/HMForced, bool, false} * Forces hardware virtualization, no falling back on raw-mode. HM must be * enabled, i.e. /HMEnabled must be true. */ bool fHMForced; #ifdef VBOX_WITH_RAW_MODE rc = CFGMR3QueryBoolDef(pCfgHM, "HMForced", &fHMForced, false); AssertRCReturn(rc, rc); AssertLogRelMsgReturn(!fHMForced || pVM->fHMEnabled, ("Configuration error: HM forced but not enabled!\n"), VERR_INVALID_PARAMETER); # if defined(RT_OS_DARWIN) if (pVM->fHMEnabled) fHMForced = true; # endif AssertLogRelMsgReturn(pVM->cCpus == 1 || pVM->fHMEnabled, ("Configuration error: SMP requires HM to be enabled!\n"), VERR_INVALID_PARAMETER); if (pVM->cCpus > 1) fHMForced = true; #else /* !VBOX_WITH_RAW_MODE */ AssertRelease(pVM->fHMEnabled); fHMForced = true; #endif /* !VBOX_WITH_RAW_MODE */ /** @cfgm{/HM/EnableNestedPaging, bool, false} * Enables nested paging (aka extended page tables). */ rc = CFGMR3QueryBoolDef(pCfgHM, "EnableNestedPaging", &pVM->hm.s.fAllowNestedPaging, false); AssertRCReturn(rc, rc); /** @cfgm{/HM/EnableUX, bool, true} * Enables the VT-x unrestricted execution feature. */ rc = CFGMR3QueryBoolDef(pCfgHM, "EnableUX", &pVM->hm.s.vmx.fAllowUnrestricted, true); AssertRCReturn(rc, rc); /** @cfgm{/HM/EnableLargePages, bool, false} * Enables using large pages (2 MB) for guest memory, thus saving on (nested) * page table walking and maybe better TLB hit rate in some cases. */ rc = CFGMR3QueryBoolDef(pCfgHM, "EnableLargePages", &pVM->hm.s.fLargePages, false); AssertRCReturn(rc, rc); /** @cfgm{/HM/EnableVPID, bool, false} * Enables the VT-x VPID feature. */ rc = CFGMR3QueryBoolDef(pCfgHM, "EnableVPID", &pVM->hm.s.vmx.fAllowVpid, false); AssertRCReturn(rc, rc); /** @cfgm{/HM/TPRPatchingEnabled, bool, false} * Enables TPR patching for 32-bit windows guests with IO-APIC. */ rc = CFGMR3QueryBoolDef(pCfgHM, "TPRPatchingEnabled", &pVM->hm.s.fTRPPatchingAllowed, false); AssertRCReturn(rc, rc); /** @cfgm{/HM/64bitEnabled, bool, 32-bit:false, 64-bit:true} * Enables AMD64 cpu features. * On 32-bit hosts this isn't default and require host CPU support. 64-bit hosts * already have the support. */ #ifdef VBOX_ENABLE_64_BITS_GUESTS rc = CFGMR3QueryBoolDef(pCfgHM, "64bitEnabled", &pVM->hm.s.fAllow64BitGuests, HC_ARCH_BITS == 64); AssertLogRelRCReturn(rc, rc); #else pVM->hm.s.fAllow64BitGuests = false; #endif /** @cfgm{/HM/Exclusive, bool} * Determines the init method for AMD-V and VT-x. If set to true, HM will do a * global init for each host CPU. If false, we do local init each time we wish * to execute guest code. * * Default is false for Mac OS X and Windows due to the higher risk of conflicts * with other hypervisors. */ rc = CFGMR3QueryBoolDef(pCfgHM, "Exclusive", &pVM->hm.s.fGlobalInit, #if defined(RT_OS_DARWIN) || defined(RT_OS_WINDOWS) false #else true #endif ); AssertLogRelRCReturn(rc, rc); /** @cfgm{/HM/MaxResumeLoops, uint32_t} * The number of times to resume guest execution before we forcibly return to * ring-3. The return value of RTThreadPreemptIsPendingTrusty in ring-0 * determins the default value. */ rc = CFGMR3QueryU32Def(pCfgHM, "MaxResumeLoops", &pVM->hm.s.cMaxResumeLoops, 0 /* set by R0 later */); AssertLogRelRCReturn(rc, rc); /* * Check if VT-x or AMD-v support according to the users wishes. */ /** @todo SUPR3QueryVTCaps won't catch VERR_VMX_IN_VMX_ROOT_MODE or * VERR_SVM_IN_USE. */ if (pVM->fHMEnabled) { uint32_t fCaps; rc = SUPR3QueryVTCaps(&fCaps); if (RT_SUCCESS(rc)) { if (fCaps & SUPVTCAPS_AMD_V) LogRel(("HMR3Init: AMD-V%s\n", fCaps & SUPVTCAPS_NESTED_PAGING ? " w/ nested paging" : "")); else if (fCaps & SUPVTCAPS_VT_X) { rc = SUPR3QueryVTxSupported(); if (RT_SUCCESS(rc)) LogRel(("HMR3Init: VT-x%s\n", fCaps & SUPVTCAPS_NESTED_PAGING ? " w/ nested paging" : "")); else { #ifdef RT_OS_LINUX const char *pszMinReq = " Linux 2.6.13 or newer required!"; #else const char *pszMinReq = ""; #endif if (fHMForced) return VMSetError(pVM, rc, RT_SRC_POS, "The host kernel does not support VT-x.%s\n", pszMinReq); /* Fall back to raw-mode. */ LogRel(("HMR3Init: Falling back to raw-mode: The host kernel does not support VT-x.%s\n", pszMinReq)); pVM->fHMEnabled = false; } } else AssertLogRelMsgFailedReturn(("SUPR3QueryVTCaps didn't return either AMD-V or VT-x flag set (%#x)!\n", fCaps), VERR_INTERNAL_ERROR_5); /* * Do we require a little bit or raw-mode for 64-bit guest execution? */ pVM->fHMNeedRawModeCtx = HC_ARCH_BITS == 32 && pVM->fHMEnabled && pVM->hm.s.fAllow64BitGuests; } else { const char *pszMsg; switch (rc) { case VERR_UNSUPPORTED_CPU: pszMsg = "Unknown CPU, VT-x or AMD-v features cannot be ascertained."; break; case VERR_VMX_NO_VMX: pszMsg = "VT-x is not available."; break; case VERR_VMX_MSR_LOCKED_OR_DISABLED: pszMsg = "VT-x is disabled in the BIOS (or by the host OS)."; break; case VERR_SVM_NO_SVM: pszMsg = "AMD-V is not available."; break; case VERR_SVM_DISABLED: pszMsg = "AMD-V is disabled in the BIOS (or by the host OS)."; break; default: pszMsg = NULL; break; } if (fHMForced && pszMsg) return VM_SET_ERROR(pVM, rc, pszMsg); if (!pszMsg) return VMSetError(pVM, rc, RT_SRC_POS, "SUPR3QueryVTCaps failed with %Rrc", rc); /* Fall back to raw-mode. */ LogRel(("HMR3Init: Falling back to raw-mode: %s\n", pszMsg)); pVM->fHMEnabled = false; } } /* It's now OK to use the predicate function. */ pVM->fHMEnabledFixed = true; return VINF_SUCCESS; } /** * Initializes the per-VCPU HM. * * @returns VBox status code. * @param pVM Pointer to the VM. */ static int hmR3InitCPU(PVM pVM) { LogFlow(("HMR3InitCPU\n")); if (!HMIsEnabled(pVM)) return VINF_SUCCESS; for (VMCPUID i = 0; i < pVM->cCpus; i++) { PVMCPU pVCpu = &pVM->aCpus[i]; pVCpu->hm.s.fActive = false; } #ifdef VBOX_WITH_STATISTICS STAM_REG(pVM, &pVM->hm.s.StatTprPatchSuccess, STAMTYPE_COUNTER, "/HM/TPR/Patch/Success", STAMUNIT_OCCURENCES, "Number of times an instruction was successfully patched."); STAM_REG(pVM, &pVM->hm.s.StatTprPatchFailure, STAMTYPE_COUNTER, "/HM/TPR/Patch/Failed", STAMUNIT_OCCURENCES, "Number of unsuccessful patch attempts."); STAM_REG(pVM, &pVM->hm.s.StatTprReplaceSuccess, STAMTYPE_COUNTER, "/HM/TPR/Replace/Success",STAMUNIT_OCCURENCES, "Number of times an instruction was successfully patched."); STAM_REG(pVM, &pVM->hm.s.StatTprReplaceFailure, STAMTYPE_COUNTER, "/HM/TPR/Replace/Failed", STAMUNIT_OCCURENCES, "Number of unsuccessful patch attempts."); /* * Statistics. */ for (VMCPUID i = 0; i < pVM->cCpus; i++) { PVMCPU pVCpu = &pVM->aCpus[i]; int rc; rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatPoke, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling of RTMpPokeCpu", "/PROF/CPU%d/HM/Poke", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatSpinPoke, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling of poke wait", "/PROF/CPU%d/HM/PokeWait", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatSpinPokeFailed, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling of poke wait when RTMpPokeCpu fails", "/PROF/CPU%d/HM/PokeWaitFailed", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatEntry, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling of VMXR0RunGuestCode entry", "/PROF/CPU%d/HM/StatEntry", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatExit1, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling of VMXR0RunGuestCode exit part 1", "/PROF/CPU%d/HM/SwitchFromGC_1", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatExit2, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling of VMXR0RunGuestCode exit part 2", "/PROF/CPU%d/HM/SwitchFromGC_2", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatExitIO, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "I/O", "/PROF/CPU%d/HM/SwitchFromGC_2/IO", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatExitMovCRx, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "MOV CRx", "/PROF/CPU%d/HM/SwitchFromGC_2/MovCRx", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatExitXcptNmi, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Exceptions, NMIs", "/PROF/CPU%d/HM/SwitchFromGC_2/XcptNmi", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatLoadGuestState, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling of VMXR0LoadGuestState", "/PROF/CPU%d/HM/StatLoadGuestState", i); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatInGC, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling of VMLAUNCH/VMRESUME.", "/PROF/CPU%d/HM/InGC", i); AssertRC(rc); # if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL) rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatWorldSwitch3264, STAMTYPE_PROFILE, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling of the 32/64 switcher.", "/PROF/CPU%d/HM/Switcher3264", i); AssertRC(rc); # endif # ifdef HM_PROFILE_EXIT_DISPATCH rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatExitDispatch, STAMTYPE_PROFILE_ADV, STAMVISIBILITY_USED, STAMUNIT_TICKS_PER_CALL, "Profiling the dispatching of exit handlers.", "/PROF/CPU%d/HM/ExitDispatch", i); AssertRC(rc); # endif # define HM_REG_COUNTER(a, b, desc) \ rc = STAMR3RegisterF(pVM, a, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, desc, b, i); \ AssertRC(rc); HM_REG_COUNTER(&pVCpu->hm.s.StatExitShadowNM, "/HM/CPU%d/Exit/Trap/Shw/#NM", "Shadow #NM (device not available, no math co-processor) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestNM, "/HM/CPU%d/Exit/Trap/Gst/#NM", "Guest #NM (device not available, no math co-processor) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitShadowPF, "/HM/CPU%d/Exit/Trap/Shw/#PF", "Shadow #PF (page fault) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitShadowPFEM, "/HM/CPU%d/Exit/Trap/Shw/#PF-EM", "#PF (page fault) exception going back to ring-3 for emulating the instruction."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestPF, "/HM/CPU%d/Exit/Trap/Gst/#PF", "Guest #PF (page fault) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestUD, "/HM/CPU%d/Exit/Trap/Gst/#UD", "Guest #UD (undefined opcode) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestSS, "/HM/CPU%d/Exit/Trap/Gst/#SS", "Guest #SS (stack-segment fault) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestNP, "/HM/CPU%d/Exit/Trap/Gst/#NP", "Guest #NP (segment not present) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestGP, "/HM/CPU%d/Exit/Trap/Gst/#GP", "Guest #GP (general protection) execption."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestMF, "/HM/CPU%d/Exit/Trap/Gst/#MF", "Guest #MF (x87 FPU error, math fault) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestDE, "/HM/CPU%d/Exit/Trap/Gst/#DE", "Guest #DE (divide error) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestDB, "/HM/CPU%d/Exit/Trap/Gst/#DB", "Guest #DB (debug) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestBP, "/HM/CPU%d/Exit/Trap/Gst/#BP", "Guest #BP (breakpoint) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestXF, "/HM/CPU%d/Exit/Trap/Gst/#XF", "Guest #XF (extended math fault, SIMD FPU) exception."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitGuestXcpUnk, "/HM/CPU%d/Exit/Trap/Gst/Other", "Other guest exceptions."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitInvlpg, "/HM/CPU%d/Exit/Instr/Invlpg", "Guest attempted to execute INVLPG."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitInvd, "/HM/CPU%d/Exit/Instr/Invd", "Guest attempted to execute INVD."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitWbinvd, "/HM/CPU%d/Exit/Instr/Wbinvd", "Guest attempted to execute WBINVD."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitPause, "/HM/CPU%d/Exit/Instr/Pause", "Guest attempted to execute PAUSE."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitCpuid, "/HM/CPU%d/Exit/Instr/Cpuid", "Guest attempted to execute CPUID."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitRdtsc, "/HM/CPU%d/Exit/Instr/Rdtsc", "Guest attempted to execute RDTSC."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitRdtscp, "/HM/CPU%d/Exit/Instr/Rdtscp", "Guest attempted to execute RDTSCP."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitRdpmc, "/HM/CPU%d/Exit/Instr/Rdpmc", "Guest attempted to execute RDPMC."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitRdrand, "/HM/CPU%d/Exit/Instr/Rdrand", "Guest attempted to execute RDRAND."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitRdmsr, "/HM/CPU%d/Exit/Instr/Rdmsr", "Guest attempted to execute RDMSR."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitWrmsr, "/HM/CPU%d/Exit/Instr/Wrmsr", "Guest attempted to execute WRMSR."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitMwait, "/HM/CPU%d/Exit/Instr/Mwait", "Guest attempted to execute MWAIT."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitMonitor, "/HM/CPU%d/Exit/Instr/Monitor", "Guest attempted to execute MONITOR."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitDRxWrite, "/HM/CPU%d/Exit/Instr/DR/Write", "Guest attempted to write a debug register."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitDRxRead, "/HM/CPU%d/Exit/Instr/DR/Read", "Guest attempted to read a debug register."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitClts, "/HM/CPU%d/Exit/Instr/CLTS", "Guest attempted to execute CLTS."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitLmsw, "/HM/CPU%d/Exit/Instr/LMSW", "Guest attempted to execute LMSW."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitCli, "/HM/CPU%d/Exit/Instr/Cli", "Guest attempted to execute CLI."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitSti, "/HM/CPU%d/Exit/Instr/Sti", "Guest attempted to execute STI."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitPushf, "/HM/CPU%d/Exit/Instr/Pushf", "Guest attempted to execute PUSHF."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitPopf, "/HM/CPU%d/Exit/Instr/Popf", "Guest attempted to execute POPF."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitIret, "/HM/CPU%d/Exit/Instr/Iret", "Guest attempted to execute IRET."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitInt, "/HM/CPU%d/Exit/Instr/Int", "Guest attempted to execute INT."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitHlt, "/HM/CPU%d/Exit/Instr/Hlt", "Guest attempted to execute HLT."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitXdtrAccess, "/HM/CPU%d/Exit/Instr/XdtrAccess", "Guest attempted to access descriptor table register (GDTR, IDTR, LDTR)."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitIOWrite, "/HM/CPU%d/Exit/IO/Write", "I/O write."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitIORead, "/HM/CPU%d/Exit/IO/Read", "I/O read."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitIOStringWrite, "/HM/CPU%d/Exit/IO/WriteString", "String I/O write."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitIOStringRead, "/HM/CPU%d/Exit/IO/ReadString", "String I/O read."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitIntWindow, "/HM/CPU%d/Exit/IntWindow", "Interrupt-window exit. Guest is ready to receive interrupts again."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitMaxResume, "/HM/CPU%d/Exit/MaxResume", "Maximum VMRESUME inner-loop counter reached."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitExtInt, "/HM/CPU%d/Exit/ExtInt", "Host interrupt received."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitPreemptTimer, "/HM/CPU%d/Exit/PreemptTimer", "VMX-preemption timer expired."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitTprBelowThreshold, "/HM/CPU%d/Exit/TprBelowThreshold", "TPR lowered below threshold by the guest."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitTaskSwitch, "/HM/CPU%d/Exit/TaskSwitch", "Guest attempted a task switch."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitMtf, "/HM/CPU%d/Exit/MonitorTrapFlag", "Monitor Trap Flag."); HM_REG_COUNTER(&pVCpu->hm.s.StatExitApicAccess, "/HM/CPU%d/Exit/ApicAccess", "APIC access. Guest attempted to access memory at a physical address on the APIC-access page."); HM_REG_COUNTER(&pVCpu->hm.s.StatSwitchGuestIrq, "/HM/CPU%d/Switch/IrqPending", "PDMGetInterrupt() cleared behind our back!?!."); HM_REG_COUNTER(&pVCpu->hm.s.StatSwitchHmToR3FF, "/HM/CPU%d/Switch/HmToR3FF", "Exit to ring-3 due to pending timers, EMT rendezvous, critical section etc."); HM_REG_COUNTER(&pVCpu->hm.s.StatSwitchExitToR3, "/HM/CPU%d/Switch/ExitToR3", "Exit to ring-3 (total)."); HM_REG_COUNTER(&pVCpu->hm.s.StatSwitchLongJmpToR3, "/HM/CPU%d/Switch/LongJmpToR3", "Longjump to ring-3."); HM_REG_COUNTER(&pVCpu->hm.s.StatIntInject, "/HM/CPU%d/Irq/Inject", "Injecting hardware interrupt into the guest."); HM_REG_COUNTER(&pVCpu->hm.s.StatIntReinject, "/HM/CPU%d/Irq/Reinject", "Re-injecting an event into the guest."); HM_REG_COUNTER(&pVCpu->hm.s.StatPendingHostIrq, "/HM/CPU%d/Irq/PendingOnHost", "Exiting to ring-3 due to preemption pending on the host."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushPage, "/HM/CPU%d/Flush/Page", "Invalidating a guest page on all guest CPUs."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushPageManual, "/HM/CPU%d/Flush/Page/Virt", "Invalidating a guest page using guest-virtual address."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushPhysPageManual, "/HM/CPU%d/Flush/Page/Phys", "Invalidating a guest page using guest-physical address."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushTlb, "/HM/CPU%d/Flush/TLB", "Forcing a full guest-TLB flush (ring-0)."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushTlbManual, "/HM/CPU%d/Flush/TLB/Manual", "Request a full guest-TLB flush."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushTlbWorldSwitch, "/HM/CPU%d/Flush/TLB/CpuSwitch", "Forcing a full guest-TLB flush due to host-CPU reschedule or ASID-limit hit by another guest-VCPU."); HM_REG_COUNTER(&pVCpu->hm.s.StatNoFlushTlbWorldSwitch, "/HM/CPU%d/Flush/TLB/Skipped", "No TLB flushing required."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushAsid, "/HM/CPU%d/Flush/TLB/ASID", "Flushed guest-TLB entries for the current VPID."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushNestedPaging, "/HM/CPU%d/Flush/TLB/NestedPaging", "Flushed guest-TLB entries for the current EPT."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushTlbInvlpgVirt, "/HM/CPU%d/Flush/TLB/InvlpgVirt", "Invalidated a guest-TLB entry for a guest-virtual address."); HM_REG_COUNTER(&pVCpu->hm.s.StatFlushTlbInvlpgPhys, "/HM/CPU%d/Flush/TLB/InvlpgPhys", "Currently not possible, flushes entire guest-TLB."); HM_REG_COUNTER(&pVCpu->hm.s.StatTlbShootdown, "/HM/CPU%d/Flush/Shootdown/Page", "Inter-VCPU request to flush queued guest page."); HM_REG_COUNTER(&pVCpu->hm.s.StatTlbShootdownFlush, "/HM/CPU%d/Flush/Shootdown/TLB", "Inter-VCPU request to flush entire guest-TLB."); HM_REG_COUNTER(&pVCpu->hm.s.StatTscOffset, "/HM/CPU%d/TSC/Offset", "TSC offsetting is in effect."); HM_REG_COUNTER(&pVCpu->hm.s.StatTscIntercept, "/HM/CPU%d/TSC/Intercept", "Guest is in catchup mode, intercept TSC accesses."); HM_REG_COUNTER(&pVCpu->hm.s.StatTscInterceptOverFlow, "/HM/CPU%d/TSC/InterceptOverflow", "TSC offset overflow, fallback to intercept TSC accesses."); HM_REG_COUNTER(&pVCpu->hm.s.StatDRxArmed, "/HM/CPU%d/Debug/Armed", "Loaded guest-debug state while loading guest-state."); HM_REG_COUNTER(&pVCpu->hm.s.StatDRxContextSwitch, "/HM/CPU%d/Debug/ContextSwitch", "Loaded guest-debug state on MOV DRx."); HM_REG_COUNTER(&pVCpu->hm.s.StatDRxIoCheck, "/HM/CPU%d/Debug/IOCheck", "Checking for I/O breakpoint."); HM_REG_COUNTER(&pVCpu->hm.s.StatLoadMinimal, "/HM/CPU%d/Load/Minimal", "VM-entry loading just RIP (+RSP, RFLAGs for old VT-x code)."); HM_REG_COUNTER(&pVCpu->hm.s.StatLoadFull, "/HM/CPU%d/Load/Full", "VM-entry loading more of the state."); HM_REG_COUNTER(&pVCpu->hm.s.StatVmxCheckBadRmSelBase, "/HM/CPU%d/VMXCheck/RMSelBase", "Could not use VMX due to unsuitable real-mode selector base."); HM_REG_COUNTER(&pVCpu->hm.s.StatVmxCheckBadRmSelLimit, "/HM/CPU%d/VMXCheck/RMSelLimit", "Could not use VMX due to unsuitable real-mode selector limit."); HM_REG_COUNTER(&pVCpu->hm.s.StatVmxCheckRmOk, "/HM/CPU%d/VMXCheck/VMX_RM", "VMX execution in real (V86) mode OK."); HM_REG_COUNTER(&pVCpu->hm.s.StatVmxCheckBadSel, "/HM/CPU%d/VMXCheck/Selector", "Could not use VMX due to unsuitable selector."); HM_REG_COUNTER(&pVCpu->hm.s.StatVmxCheckBadRpl, "/HM/CPU%d/VMXCheck/RPL", "Could not use VMX due to unsuitable RPL."); HM_REG_COUNTER(&pVCpu->hm.s.StatVmxCheckBadLdt, "/HM/CPU%d/VMXCheck/LDT", "Could not use VMX due to unsuitable LDT."); HM_REG_COUNTER(&pVCpu->hm.s.StatVmxCheckBadTr, "/HM/CPU%d/VMXCheck/TR", "Could not use VMX due to unsuitable TR."); HM_REG_COUNTER(&pVCpu->hm.s.StatVmxCheckPmOk, "/HM/CPU%d/VMXCheck/VMX_PM", "VMX execution in protected mode OK."); #if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL) HM_REG_COUNTER(&pVCpu->hm.s.StatFpu64SwitchBack, "/HM/CPU%d/Switch64/Fpu", "Saving guest FPU/XMM state."); HM_REG_COUNTER(&pVCpu->hm.s.StatDebug64SwitchBack, "/HM/CPU%d/Switch64/Debug", "Saving guest debug state."); #endif for (unsigned j = 0; j < RT_ELEMENTS(pVCpu->hm.s.StatExitCRxWrite); j++) { rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatExitCRxWrite[j], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "Profiling of CRx writes", "/HM/CPU%d/Exit/Instr/CR/Write/%x", i, j); AssertRC(rc); rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatExitCRxRead[j], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "Profiling of CRx reads", "/HM/CPU%d/Exit/Instr/CR/Read/%x", i, j); AssertRC(rc); } #undef HM_REG_COUNTER pVCpu->hm.s.paStatExitReason = NULL; rc = MMHyperAlloc(pVM, MAX_EXITREASON_STAT*sizeof(*pVCpu->hm.s.paStatExitReason), 0, MM_TAG_HM, (void **)&pVCpu->hm.s.paStatExitReason); AssertRC(rc); if (RT_SUCCESS(rc)) { const char * const *papszDesc = ASMIsIntelCpu() ? &g_apszVTxExitReasons[0] : &g_apszAmdVExitReasons[0]; for (int j = 0; j < MAX_EXITREASON_STAT; j++) { if (papszDesc[j]) { rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.paStatExitReason[j], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, papszDesc[j], "/HM/CPU%d/Exit/Reason/%02x", i, j); AssertRC(rc); } } rc = STAMR3RegisterF(pVM, &pVCpu->hm.s.StatExitReasonNpf, STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "Nested page fault", "/HM/CPU%d/Exit/Reason/#NPF", i); AssertRC(rc); } pVCpu->hm.s.paStatExitReasonR0 = MMHyperR3ToR0(pVM, pVCpu->hm.s.paStatExitReason); # ifdef VBOX_WITH_2X_4GB_ADDR_SPACE Assert(pVCpu->hm.s.paStatExitReasonR0 != NIL_RTR0PTR || !HMIsEnabled(pVM)); # else Assert(pVCpu->hm.s.paStatExitReasonR0 != NIL_RTR0PTR); # endif rc = MMHyperAlloc(pVM, sizeof(STAMCOUNTER) * 256, 8, MM_TAG_HM, (void **)&pVCpu->hm.s.paStatInjectedIrqs); AssertRCReturn(rc, rc); pVCpu->hm.s.paStatInjectedIrqsR0 = MMHyperR3ToR0(pVM, pVCpu->hm.s.paStatInjectedIrqs); # ifdef VBOX_WITH_2X_4GB_ADDR_SPACE Assert(pVCpu->hm.s.paStatInjectedIrqsR0 != NIL_RTR0PTR || !HMIsEnabled(pVM)); # else Assert(pVCpu->hm.s.paStatInjectedIrqsR0 != NIL_RTR0PTR); # endif for (unsigned j = 0; j < 255; j++) { STAMR3RegisterF(pVM, &pVCpu->hm.s.paStatInjectedIrqs[j], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "Forwarded interrupts.", (j < 0x20) ? "/HM/CPU%d/Interrupt/Trap/%02X" : "/HM/CPU%d/Interrupt/IRQ/%02X", i, j); } } #endif /* VBOX_WITH_STATISTICS */ #ifdef VBOX_WITH_CRASHDUMP_MAGIC /* * Magic marker for searching in crash dumps. */ for (VMCPUID i = 0; i < pVM->cCpus; i++) { PVMCPU pVCpu = &pVM->aCpus[i]; PVMCSCACHE pCache = &pVCpu->hm.s.vmx.VMCSCache; strcpy((char *)pCache->aMagic, "VMCSCACHE Magic"); pCache->uMagic = UINT64_C(0xDEADBEEFDEADBEEF); } #endif return VINF_SUCCESS; } /** * Called when a init phase has completed. * * @returns VBox status code. * @param pVM The VM. * @param enmWhat The phase that completed. */ VMMR3_INT_DECL(int) HMR3InitCompleted(PVM pVM, VMINITCOMPLETED enmWhat) { switch (enmWhat) { case VMINITCOMPLETED_RING3: return hmR3InitCPU(pVM); case VMINITCOMPLETED_RING0: return hmR3InitFinalizeR0(pVM); default: return VINF_SUCCESS; } } /** * Turns off normal raw mode features. * * @param pVM Pointer to the VM. */ static void hmR3DisableRawMode(PVM pVM) { /* Reinit the paging mode to force the new shadow mode. */ for (VMCPUID i = 0; i < pVM->cCpus; i++) { PVMCPU pVCpu = &pVM->aCpus[i]; PGMR3ChangeMode(pVM, pVCpu, PGMMODE_REAL); } } /** * Initialize VT-x or AMD-V. * * @returns VBox status code. * @param pVM Pointer to the VM. */ static int hmR3InitFinalizeR0(PVM pVM) { int rc; if (!HMIsEnabled(pVM)) return VINF_SUCCESS; /* * Hack to allow users to work around broken BIOSes that incorrectly set * EFER.SVME, which makes us believe somebody else is already using AMD-V. */ if ( !pVM->hm.s.vmx.fSupported && !pVM->hm.s.svm.fSupported && pVM->hm.s.lLastError == VERR_SVM_IN_USE /* implies functional AMD-V */ && RTEnvExist("VBOX_HWVIRTEX_IGNORE_SVM_IN_USE")) { LogRel(("HM: VBOX_HWVIRTEX_IGNORE_SVM_IN_USE active!\n")); pVM->hm.s.svm.fSupported = true; pVM->hm.s.svm.fIgnoreInUseError = true; pVM->hm.s.lLastError = VINF_SUCCESS; } /* * Report ring-0 init errors. */ if ( !pVM->hm.s.vmx.fSupported && !pVM->hm.s.svm.fSupported) { LogRel(("HM: Failed to initialize VT-x / AMD-V: %Rrc\n", pVM->hm.s.lLastError)); LogRel(("HM: VMX MSR_IA32_FEATURE_CONTROL=%RX64\n", pVM->hm.s.vmx.msr.feature_ctrl)); switch (pVM->hm.s.lLastError) { case VERR_VMX_IN_VMX_ROOT_MODE: return VM_SET_ERROR(pVM, VERR_VMX_IN_VMX_ROOT_MODE, "VT-x is being used by another hypervisor."); case VERR_VMX_NO_VMX: return VM_SET_ERROR(pVM, VERR_VMX_NO_VMX, "VT-x is not available."); case VERR_VMX_MSR_LOCKED_OR_DISABLED: return VM_SET_ERROR(pVM, VERR_VMX_NO_VMX, "VT-x is disabled in the BIOS (or by the host OS)."); case VERR_SVM_IN_USE: return VM_SET_ERROR(pVM, VERR_SVM_IN_USE, "AMD-V is being used by another hypervisor."); case VERR_SVM_NO_SVM: return VM_SET_ERROR(pVM, VERR_SVM_NO_SVM, "AMD-V is not available."); case VERR_SVM_DISABLED: return VM_SET_ERROR(pVM, VERR_SVM_DISABLED, "AMD-V is disabled in the BIOS."); } return VMSetError(pVM, pVM->hm.s.lLastError, RT_SRC_POS, "HM ring-0 init failed: %Rrc", pVM->hm.s.lLastError); } /* * Enable VT-x or AMD-V on all host CPUs. */ rc = SUPR3CallVMMR0Ex(pVM->pVMR0, 0 /*idCpu*/, VMMR0_DO_HM_ENABLE, 0, NULL); if (RT_FAILURE(rc)) { LogRel(("HMR3InitFinalize: SUPR3CallVMMR0Ex VMMR0_DO_HM_ENABLE failed with %Rrc\n", rc)); return rc; } /* * No TPR patching is required when the IO-APIC is not enabled for this VM. * (Main should have taken care of this already) */ pVM->hm.s.fHasIoApic = PDMHasIoApic(pVM); if (!pVM->hm.s.fHasIoApic) { Assert(!pVM->hm.s.fTRPPatchingAllowed); /* paranoia */ pVM->hm.s.fTRPPatchingAllowed = false; } /* * Do the vendor specific initalization . * . * Note! We disable release log buffering here since we're doing relatively . * lot of logging and doesn't want to hit the disk with each LogRel . * statement. */ AssertLogRelReturn(!pVM->hm.s.fInitialized, VERR_HM_IPE_5); bool fOldBuffered = RTLogRelSetBuffering(true /*fBuffered*/); if (pVM->hm.s.vmx.fSupported) rc = hmR3InitFinalizeR0Intel(pVM); else rc = hmR3InitFinalizeR0Amd(pVM); LogRel(("HM: VT-x/AMD-V init method: %s\n", (pVM->hm.s.fGlobalInit) ? "GLOBAL" : "LOCAL")); RTLogRelSetBuffering(fOldBuffered); pVM->hm.s.fInitialized = true; return rc; } /** * Finish VT-x initialization (after ring-0 init). * * @returns VBox status code. * @param pVM The cross context VM structure. */ static int hmR3InitFinalizeR0Intel(PVM pVM) { int rc; Log(("pVM->hm.s.vmx.fSupported = %d\n", pVM->hm.s.vmx.fSupported)); AssertLogRelReturn(pVM->hm.s.vmx.msr.feature_ctrl != 0, VERR_HM_IPE_4); uint64_t val; uint64_t zap; RTGCPHYS GCPhys = 0; #ifndef VBOX_WITH_OLD_VTX_CODE LogRel(("HM: Using VT-x implementation 2.0!\n")); #endif LogRel(("HM: Host CR4 = %08X\n", pVM->hm.s.vmx.hostCR4)); LogRel(("HM: MSR_IA32_FEATURE_CONTROL = %RX64\n", pVM->hm.s.vmx.msr.feature_ctrl)); LogRel(("HM: MSR_IA32_VMX_BASIC_INFO = %RX64\n", pVM->hm.s.vmx.msr.vmx_basic_info)); LogRel(("HM: VMCS id = %x\n", MSR_IA32_VMX_BASIC_INFO_VMCS_ID(pVM->hm.s.vmx.msr.vmx_basic_info))); LogRel(("HM: VMCS size = %x\n", MSR_IA32_VMX_BASIC_INFO_VMCS_SIZE(pVM->hm.s.vmx.msr.vmx_basic_info))); LogRel(("HM: VMCS physical address limit = %s\n", MSR_IA32_VMX_BASIC_INFO_VMCS_PHYS_WIDTH(pVM->hm.s.vmx.msr.vmx_basic_info) ? "< 4 GB" : "None")); LogRel(("HM: VMCS memory type = %x\n", MSR_IA32_VMX_BASIC_INFO_VMCS_MEM_TYPE(pVM->hm.s.vmx.msr.vmx_basic_info))); LogRel(("HM: Dual-monitor treatment = %d\n", MSR_IA32_VMX_BASIC_INFO_VMCS_DUAL_MON(pVM->hm.s.vmx.msr.vmx_basic_info))); LogRel(("HM: Max resume loops = %RX32\n", pVM->hm.s.cMaxResumeLoops)); LogRel(("HM: MSR_IA32_VMX_PINBASED_CTLS = %RX64\n", pVM->hm.s.vmx.msr.vmx_pin_ctls.u)); val = pVM->hm.s.vmx.msr.vmx_pin_ctls.n.allowed1; zap = pVM->hm.s.vmx.msr.vmx_pin_ctls.n.disallowed0; HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PIN_EXEC_EXT_INT_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PIN_EXEC_NMI_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PIN_EXEC_VIRTUAL_NMI); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PIN_EXEC_PREEMPT_TIMER); LogRel(("HM: MSR_IA32_VMX_PROCBASED_CTLS = %RX64\n", pVM->hm.s.vmx.msr.vmx_proc_ctls.u)); val = pVM->hm.s.vmx.msr.vmx_proc_ctls.n.allowed1; zap = pVM->hm.s.vmx.msr.vmx_proc_ctls.n.disallowed0; HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_INT_WINDOW_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_USE_TSC_OFFSETTING); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_HLT_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_INVLPG_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_MWAIT_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_RDPMC_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_RDTSC_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_CR3_LOAD_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_CR3_STORE_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_CR8_LOAD_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_CR8_STORE_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_USE_TPR_SHADOW); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_NMI_WINDOW_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_MOV_DR_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_UNCOND_IO_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_USE_IO_BITMAPS); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_MONITOR_TRAP_FLAG); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_USE_MSR_BITMAPS); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_MONITOR_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_PAUSE_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC_USE_SECONDARY_EXEC_CTRL); if (pVM->hm.s.vmx.msr.vmx_proc_ctls.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC_USE_SECONDARY_EXEC_CTRL) { LogRel(("HM: MSR_IA32_VMX_PROCBASED_CTLS2 = %RX64\n", pVM->hm.s.vmx.msr.vmx_proc_ctls2.u)); val = pVM->hm.s.vmx.msr.vmx_proc_ctls2.n.allowed1; zap = pVM->hm.s.vmx.msr.vmx_proc_ctls2.n.disallowed0; HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_VIRT_APIC); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_EPT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_DESCRIPTOR_TABLE_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_RDTSCP); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_VIRT_X2APIC); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_VPID); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_WBINVD_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_UNRESTRICTED_GUEST); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_PAUSE_LOOP_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_RDRAND_EXIT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_INVPCID); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_PROC_EXEC2_VMFUNC); } LogRel(("HM: MSR_IA32_VMX_ENTRY_CTLS = %RX64\n", pVM->hm.s.vmx.msr.vmx_entry.u)); val = pVM->hm.s.vmx.msr.vmx_entry.n.allowed1; zap = pVM->hm.s.vmx.msr.vmx_entry.n.disallowed0; HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_ENTRY_LOAD_DEBUG); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_ENTRY_IA32E_MODE_GUEST); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_ENTRY_ENTRY_SMM); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_ENTRY_DEACTIVATE_DUALMON); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_ENTRY_LOAD_GUEST_PERF_MSR); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_ENTRY_LOAD_GUEST_PAT_MSR); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_ENTRY_LOAD_GUEST_EFER_MSR); LogRel(("HM: MSR_IA32_VMX_EXIT_CTLS = %RX64\n", pVM->hm.s.vmx.msr.vmx_exit.u)); val = pVM->hm.s.vmx.msr.vmx_exit.n.allowed1; zap = pVM->hm.s.vmx.msr.vmx_exit.n.disallowed0; HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_EXIT_SAVE_DEBUG); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_EXIT_HOST_ADDR_SPACE_SIZE); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_EXIT_LOAD_PERF_MSR); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_EXIT_ACK_EXT_INT); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_EXIT_SAVE_GUEST_PAT_MSR); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_EXIT_LOAD_HOST_PAT_MSR); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_EXIT_SAVE_GUEST_EFER_MSR); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_EXIT_LOAD_HOST_EFER_MSR); HMVMX_REPORT_FEATURE(val, zap, VMX_VMCS_CTRL_EXIT_SAVE_VMX_PREEMPT_TIMER); if (pVM->hm.s.vmx.msr.vmx_ept_vpid_caps) { val = pVM->hm.s.vmx.msr.vmx_ept_vpid_caps; LogRel(("HM: MSR_IA32_VMX_EPT_VPID_CAP = %RX64\n", val)); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_RWX_X_ONLY); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_RWX_W_ONLY); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_RWX_WX_ONLY); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_GAW_21_BITS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_GAW_30_BITS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_GAW_39_BITS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_GAW_48_BITS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_GAW_57_BITS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_EMT_UC); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_EMT_WC); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_EMT_WT); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_EMT_WP); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_EMT_WB); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_SP_21_BITS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_SP_30_BITS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_SP_39_BITS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_SP_48_BITS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_INVEPT); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_INVEPT_SINGLE_CONTEXT); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_INVEPT_ALL_CONTEXTS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_INVVPID); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_INVVPID_INDIV_ADDR); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_INVVPID_SINGLE_CONTEXT); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_INVVPID_ALL_CONTEXTS); HMVMX_REPORT_CAPABILITY(val, MSR_IA32_VMX_EPT_VPID_CAP_INVVPID_SINGLE_CONTEXT_RETAIN_GLOBALS); } LogRel(("HM: MSR_IA32_VMX_MISC = %RX64\n", pVM->hm.s.vmx.msr.vmx_misc)); if (MSR_IA32_VMX_MISC_PREEMPT_TSC_BIT(pVM->hm.s.vmx.msr.vmx_misc) == pVM->hm.s.vmx.cPreemptTimerShift) { LogRel(("HM: MSR_IA32_VMX_MISC_PREEMPT_TSC_BIT = %x\n", MSR_IA32_VMX_MISC_PREEMPT_TSC_BIT(pVM->hm.s.vmx.msr.vmx_misc))); } else { LogRel(("HM: MSR_IA32_VMX_MISC_PREEMPT_TSC_BIT = %x - erratum detected, using %x instead\n", MSR_IA32_VMX_MISC_PREEMPT_TSC_BIT(pVM->hm.s.vmx.msr.vmx_misc), pVM->hm.s.vmx.cPreemptTimerShift)); } LogRel(("HM: MSR_IA32_VMX_MISC_STORE_EFERLMA_VMEXIT = %x\n", MSR_IA32_VMX_MISC_STORE_EFERLMA_VMEXIT(pVM->hm.s.vmx.msr.vmx_misc))); LogRel(("HM: MSR_IA32_VMX_MISC_ACTIVITY_STATES = %x\n", MSR_IA32_VMX_MISC_ACTIVITY_STATES(pVM->hm.s.vmx.msr.vmx_misc))); LogRel(("HM: MSR_IA32_VMX_MISC_CR3_TARGET = %x\n", MSR_IA32_VMX_MISC_CR3_TARGET(pVM->hm.s.vmx.msr.vmx_misc))); LogRel(("HM: MSR_IA32_VMX_MISC_MAX_MSR = %x\n", MSR_IA32_VMX_MISC_MAX_MSR(pVM->hm.s.vmx.msr.vmx_misc))); LogRel(("HM: MSR_IA32_VMX_MISC_RDMSR_SMBASE_MSR_SMM = %x\n", MSR_IA32_VMX_MISC_RDMSR_SMBASE_MSR_SMM(pVM->hm.s.vmx.msr.vmx_misc))); LogRel(("HM: MSR_IA32_VMX_MISC_SMM_MONITOR_CTL_B2 = %x\n", MSR_IA32_VMX_MISC_SMM_MONITOR_CTL_B2(pVM->hm.s.vmx.msr.vmx_misc))); LogRel(("HM: MSR_IA32_VMX_MISC_VMWRITE_VMEXIT_INFO = %x\n", MSR_IA32_VMX_MISC_VMWRITE_VMEXIT_INFO(pVM->hm.s.vmx.msr.vmx_misc))); LogRel(("HM: MSR_IA32_VMX_MISC_MSEG_ID = %x\n", MSR_IA32_VMX_MISC_MSEG_ID(pVM->hm.s.vmx.msr.vmx_misc))); /* Paranoia */ AssertRelease(MSR_IA32_VMX_MISC_MAX_MSR(pVM->hm.s.vmx.msr.vmx_misc) >= 512); LogRel(("HM: MSR_IA32_VMX_CR0_FIXED0 = %RX64\n", pVM->hm.s.vmx.msr.vmx_cr0_fixed0)); LogRel(("HM: MSR_IA32_VMX_CR0_FIXED1 = %RX64\n", pVM->hm.s.vmx.msr.vmx_cr0_fixed1)); LogRel(("HM: MSR_IA32_VMX_CR4_FIXED0 = %RX64\n", pVM->hm.s.vmx.msr.vmx_cr4_fixed0)); LogRel(("HM: MSR_IA32_VMX_CR4_FIXED1 = %RX64\n", pVM->hm.s.vmx.msr.vmx_cr4_fixed1)); LogRel(("HM: MSR_IA32_VMX_VMCS_ENUM = %RX64\n", pVM->hm.s.vmx.msr.vmx_vmcs_enum)); LogRel(("HM: MSR_IA32_VMX_VMCS_ENUM_HIGHEST_INDEX = %x\n", MSR_IA32_VMX_VMCS_ENUM_HIGHEST_INDEX(pVM->hm.s.vmx.msr.vmx_vmcs_enum))); val = pVM->hm.s.vmx.msr.vmx_vmfunc; if (val) { LogRel(("HM: MSR_A32_VMX_VMFUNC = %RX64\n", val)); HMVMX_REPORT_ALLOWED_FEATURE(val, VMX_VMCS_CTRL_VMFUNC_EPTP_SWITCHING); } LogRel(("HM: APIC-access page physaddr = %RHp\n", pVM->hm.s.vmx.HCPhysApicAccess)); for (VMCPUID i = 0; i < pVM->cCpus; i++) { LogRel(("HM: VCPU%3d: MSR bitmap physaddr = %RHp\n", i, pVM->aCpus[i].hm.s.vmx.HCPhysMsrBitmap)); LogRel(("HM: VCPU%3d: VMCS physaddr = %RHp\n", i, pVM->aCpus[i].hm.s.vmx.HCPhysVmcs)); } if (pVM->hm.s.vmx.msr.vmx_proc_ctls2.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC2_EPT) pVM->hm.s.fNestedPaging = pVM->hm.s.fAllowNestedPaging; if (pVM->hm.s.vmx.msr.vmx_proc_ctls2.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC2_VPID) pVM->hm.s.vmx.fVpid = pVM->hm.s.vmx.fAllowVpid; /* * Disallow RDTSCP in the guest if there is no secondary process-based VM execution controls as otherwise * RDTSCP would cause a #UD. There might be no CPUs out there where this happens, as RDTSCP was introduced * in Nehalems and secondary VM exec. controls should be supported in all of them, but nonetheless it's Intel... */ if ( !(pVM->hm.s.vmx.msr.vmx_proc_ctls.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC_USE_SECONDARY_EXEC_CTRL) && CPUMGetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_RDTSCP)) { CPUMClearGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_RDTSCP); LogRel(("HM: RDTSCP disabled.\n")); } /* Unrestricted guest execution also requires EPT. */ if ( pVM->hm.s.vmx.fAllowUnrestricted && pVM->hm.s.fNestedPaging && (pVM->hm.s.vmx.msr.vmx_proc_ctls2.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC2_UNRESTRICTED_GUEST)) { pVM->hm.s.vmx.fUnrestrictedGuest = true; } if (!pVM->hm.s.vmx.fUnrestrictedGuest) { /* Allocate three pages for the TSS we need for real mode emulation. (2 pages for the IO bitmap) */ rc = PDMR3VmmDevHeapAlloc(pVM, HM_VTX_TOTAL_DEVHEAP_MEM, (RTR3PTR *)&pVM->hm.s.vmx.pRealModeTSS); if (RT_SUCCESS(rc)) { /* The I/O bitmap starts right after the virtual interrupt redirection bitmap. Refer Intel spec. 20.3.3 "Software Interrupt Handling in Virtual-8086 mode" esp. Figure 20-5.*/ ASMMemZero32(pVM->hm.s.vmx.pRealModeTSS, sizeof(*pVM->hm.s.vmx.pRealModeTSS)); pVM->hm.s.vmx.pRealModeTSS->offIoBitmap = sizeof(*pVM->hm.s.vmx.pRealModeTSS); /* Bit set to 0 means software interrupts are redirected to the 8086 program interrupt handler rather than switching to protected-mode handler. */ memset(pVM->hm.s.vmx.pRealModeTSS->IntRedirBitmap, 0, sizeof(pVM->hm.s.vmx.pRealModeTSS->IntRedirBitmap)); /* Allow all port IO, so that port IO instructions do not cause exceptions and would instead cause a VM-exit (based on VT-x's IO bitmap which we currently configure to always cause an exit). */ memset(pVM->hm.s.vmx.pRealModeTSS + 1, 0, PAGE_SIZE * 2); *((unsigned char *)pVM->hm.s.vmx.pRealModeTSS + HM_VTX_TSS_SIZE - 2) = 0xff; /* * Construct a 1024 element page directory with 4 MB pages for * the identity mapped page table used in real and protected mode * without paging with EPT. */ pVM->hm.s.vmx.pNonPagingModeEPTPageTable = (PX86PD)((char *)pVM->hm.s.vmx.pRealModeTSS + PAGE_SIZE * 3); for (uint32_t i = 0; i < X86_PG_ENTRIES; i++) { pVM->hm.s.vmx.pNonPagingModeEPTPageTable->a[i].u = _4M * i; pVM->hm.s.vmx.pNonPagingModeEPTPageTable->a[i].u |= X86_PDE4M_P | X86_PDE4M_RW | X86_PDE4M_US | X86_PDE4M_A | X86_PDE4M_D | X86_PDE4M_PS | X86_PDE4M_G; } /* We convert it here every time as pci regions could be reconfigured. */ rc = PDMVmmDevHeapR3ToGCPhys(pVM, pVM->hm.s.vmx.pRealModeTSS, &GCPhys); AssertRCReturn(rc, rc); LogRel(("HM: Real Mode TSS guest physaddr = %RGp\n", GCPhys)); rc = PDMVmmDevHeapR3ToGCPhys(pVM, pVM->hm.s.vmx.pNonPagingModeEPTPageTable, &GCPhys); AssertRCReturn(rc, rc); LogRel(("HM: Non-Paging Mode EPT CR3 = %RGp\n", GCPhys)); } else { /** @todo This cannot possibly work, there are other places which assumes * this allocation cannot fail (see HMR3CanExecuteGuest()). Make this * a failure case. */ LogRel(("HM: No real mode VT-x support (PDMR3VMMDevHeapAlloc returned %Rrc)\n", rc)); pVM->hm.s.vmx.pRealModeTSS = NULL; pVM->hm.s.vmx.pNonPagingModeEPTPageTable = NULL; } } /* * Call ring-0 to set up the VM. */ rc = SUPR3CallVMMR0Ex(pVM->pVMR0, 0 /*idCpu*/, VMMR0_DO_HM_SETUP_VM, 0, NULL); if (rc != VINF_SUCCESS) { AssertMsgFailed(("%Rrc\n", rc)); LogRel(("HM: VMX setup failed with rc=%Rrc!\n", rc)); for (VMCPUID i = 0; i < pVM->cCpus; i++) LogRel(("HM: CPU[%ld] Last instruction error %x\n", i, pVM->aCpus[i].hm.s.vmx.lasterror.u32InstrError)); return VMSetError(pVM, rc, RT_SRC_POS, "VT-x setup failed: %Rrc", rc); } LogRel(("HM: VMX enabled!\n")); pVM->hm.s.vmx.fEnabled = true; hmR3DisableRawMode(pVM); /** @todo make this go away! */ /* * Change the CPU features. */ CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_SEP); if (pVM->hm.s.fAllow64BitGuests) { CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_PAE); CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_LONG_MODE); CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_SYSCALL); /* 64 bits only on Intel CPUs */ CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_LAHF); CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_NX); #if 0 /** @todo r=bird: This ain't making any sense whatsoever. */ #if RT_ARCH_X86 if ( !CPUMGetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_PAE) || !(pVM->hm.s.vmx.hostEFER & MSR_K6_EFER_NXE)) LogRel(("NX is only supported for 64-bit guests!\n")); #endif #endif } /* Turn on NXE if PAE has been enabled *and* the host has turned on NXE (we reuse the host EFER in the switcher). */ /** @todo this needs to be fixed properly!! */ else if ( CPUMGetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_PAE) && (pVM->hm.s.vmx.hostEFER & MSR_K6_EFER_NXE)) CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_NX); else LogRel(("HM: NX not supported by the host.\n")); /* * Log configuration details. */ LogRel((pVM->hm.s.fAllow64BitGuests ? "HM: Guest support: 32-bit and 64-bit.\n" : "HM: Guest support: 32-bit only.\n")); if (pVM->hm.s.fNestedPaging) { LogRel(("HM: Nested paging enabled!\n")); LogRel(("HM: EPT root page physaddr = %RHp\n", PGMGetHyperCR3(VMMGetCpu(pVM)))); if (pVM->hm.s.vmx.enmFlushEpt == VMX_FLUSH_EPT_SINGLE_CONTEXT) LogRel(("HM: EPT flush type = VMX_FLUSH_EPT_SINGLE_CONTEXT\n")); else if (pVM->hm.s.vmx.enmFlushEpt == VMX_FLUSH_EPT_ALL_CONTEXTS) LogRel(("HM: EPT flush type = VMX_FLUSH_EPT_ALL_CONTEXTS\n")); else if (pVM->hm.s.vmx.enmFlushEpt == VMX_FLUSH_EPT_NOT_SUPPORTED) LogRel(("HM: EPT flush type = VMX_FLUSH_EPT_NOT_SUPPORTED\n")); else LogRel(("HM: EPT flush type = %d\n", pVM->hm.s.vmx.enmFlushEpt)); if (pVM->hm.s.vmx.fUnrestrictedGuest) LogRel(("HM: Unrestricted guest execution enabled!\n")); #if HC_ARCH_BITS == 64 if (pVM->hm.s.fLargePages) { /* Use large (2 MB) pages for our EPT PDEs where possible. */ PGMSetLargePageUsage(pVM, true); LogRel(("HM: Large page support enabled!\n")); } #endif } else Assert(!pVM->hm.s.vmx.fUnrestrictedGuest); if (pVM->hm.s.vmx.fVpid) { LogRel(("HM: VPID enabled!\n")); if (pVM->hm.s.vmx.enmFlushVpid == VMX_FLUSH_VPID_INDIV_ADDR) LogRel(("HM: VPID flush type = VMX_FLUSH_VPID_INDIV_ADDR\n")); else if (pVM->hm.s.vmx.enmFlushVpid == VMX_FLUSH_VPID_SINGLE_CONTEXT) LogRel(("HM: VPID flush type = VMX_FLUSH_VPID_SINGLE_CONTEXT\n")); else if (pVM->hm.s.vmx.enmFlushVpid == VMX_FLUSH_VPID_ALL_CONTEXTS) LogRel(("HM: VPID flush type = VMX_FLUSH_VPID_ALL_CONTEXTS\n")); else if (pVM->hm.s.vmx.enmFlushVpid == VMX_FLUSH_VPID_SINGLE_CONTEXT_RETAIN_GLOBALS) LogRel(("HM: VPID flush type = VMX_FLUSH_VPID_SINGLE_CONTEXT_RETAIN_GLOBALS\n")); else LogRel(("HM: VPID flush type = %d\n", pVM->hm.s.vmx.enmFlushVpid)); } else if (pVM->hm.s.vmx.enmFlushVpid == VMX_FLUSH_VPID_NOT_SUPPORTED) LogRel(("HM: Ignoring VPID capabilities of CPU.\n")); /* * TPR patching status logging. */ if (pVM->hm.s.fTRPPatchingAllowed) { if ( (pVM->hm.s.vmx.msr.vmx_proc_ctls.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC_USE_SECONDARY_EXEC_CTRL) && (pVM->hm.s.vmx.msr.vmx_proc_ctls2.n.allowed1 & VMX_VMCS_CTRL_PROC_EXEC2_VIRT_APIC)) { pVM->hm.s.fTRPPatchingAllowed = false; /* not necessary as we have a hardware solution. */ LogRel(("HM: TPR Patching not required (VMX_VMCS_CTRL_PROC_EXEC2_VIRT_APIC).\n")); } else { uint32_t u32Eax, u32Dummy; /* TPR patching needs access to the MSR_K8_LSTAR msr. */ ASMCpuId(0x80000000, &u32Eax, &u32Dummy, &u32Dummy, &u32Dummy); if ( u32Eax < 0x80000001 || !(ASMCpuId_EDX(0x80000001) & X86_CPUID_EXT_FEATURE_EDX_LONG_MODE)) { pVM->hm.s.fTRPPatchingAllowed = false; LogRel(("HM: TPR patching disabled (long mode not supported).\n")); } } } LogRel(("HM: TPR Patching %s.\n", (pVM->hm.s.fTRPPatchingAllowed) ? "enabled" : "disabled")); /* * Check for preemption timer config override and log the state of it. */ if (pVM->hm.s.vmx.fUsePreemptTimer) { PCFGMNODE pCfgHm = CFGMR3GetChild(CFGMR3GetRoot(pVM), "HM"); rc = CFGMR3QueryBoolDef(pCfgHm, "UsePreemptTimer", &pVM->hm.s.vmx.fUsePreemptTimer, true); AssertLogRelRCReturn(rc, rc); } if (pVM->hm.s.vmx.fUsePreemptTimer) LogRel(("HM: VMX-preemption timer enabled (cPreemptTimerShift=%u).\n", pVM->hm.s.vmx.cPreemptTimerShift)); else LogRel(("HM: VMX-preemption timer disabled.\n")); return VINF_SUCCESS; } /** * Finish AMD-V initialization (after ring-0 init). * * @returns VBox status code. * @param pVM The cross context VM structure. */ static int hmR3InitFinalizeR0Amd(PVM pVM) { Log(("pVM->hm.s.svm.fSupported = %d\n", pVM->hm.s.svm.fSupported)); uint32_t u32Family; uint32_t u32Model; uint32_t u32Stepping; if (HMAmdIsSubjectToErratum170(&u32Family, &u32Model, &u32Stepping)) LogRel(("HM: AMD Cpu with erratum 170 family %#x model %#x stepping %#x\n", u32Family, u32Model, u32Stepping)); LogRel(("HM: cpuid 0x80000001.u32AMDFeatureECX = %RX32\n", pVM->hm.s.cpuid.u32AMDFeatureECX)); LogRel(("HM: cpuid 0x80000001.u32AMDFeatureEDX = %RX32\n", pVM->hm.s.cpuid.u32AMDFeatureEDX)); LogRel(("HM: AMD HWCR MSR = %RX64\n", pVM->hm.s.svm.msrHwcr)); LogRel(("HM: AMD-V revision = %X\n", pVM->hm.s.svm.u32Rev)); LogRel(("HM: AMD-V max ASID = %d\n", pVM->hm.s.uMaxAsid)); LogRel(("HM: AMD-V features = %X\n", pVM->hm.s.svm.u32Features)); static const struct { uint32_t fFlag; const char *pszName; } s_aSvmFeatures[] = { #define FLAG_NAME(a_Define) { a_Define, #a_Define } FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_NESTED_PAGING), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_LBR_VIRT), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_SVM_LOCK), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_NRIP_SAVE), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_TSC_RATE_MSR), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_VMCB_CLEAN), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_FLUSH_BY_ASID), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_DECODE_ASSIST), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_SSE_3_5_DISABLE), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER), FLAG_NAME(AMD_CPUID_SVM_FEATURE_EDX_PAUSE_FILTER), #undef FLAG_NAME }; uint32_t fSvmFeatures = pVM->hm.s.svm.u32Features; for (unsigned i = 0; i < RT_ELEMENTS(s_aSvmFeatures); i++) if (fSvmFeatures & s_aSvmFeatures[i].fFlag) { LogRel(("HM: %s\n", s_aSvmFeatures[i].pszName)); fSvmFeatures &= ~s_aSvmFeatures[i].fFlag; } if (fSvmFeatures) for (unsigned iBit = 0; iBit < 32; iBit++) if (RT_BIT_32(iBit) & fSvmFeatures) LogRel(("HM: Reserved bit %u\n", iBit)); /* * Adjust feature(s). */ if (pVM->hm.s.svm.u32Features & AMD_CPUID_SVM_FEATURE_EDX_NESTED_PAGING) pVM->hm.s.fNestedPaging = pVM->hm.s.fAllowNestedPaging; /* * Call ring-0 to set up the VM. */ int rc = SUPR3CallVMMR0Ex(pVM->pVMR0, 0 /*idCpu*/, VMMR0_DO_HM_SETUP_VM, 0, NULL); if (rc != VINF_SUCCESS) { AssertMsgFailed(("%Rrc\n", rc)); LogRel(("HM: AMD-V setup failed with rc=%Rrc!\n", rc)); return VMSetError(pVM, rc, RT_SRC_POS, "AMD-V setup failed: %Rrc", rc); } LogRel(("HM: AMD-V enabled!\n")); pVM->hm.s.svm.fEnabled = true; if (pVM->hm.s.fNestedPaging) { LogRel(("HM: Enabled nested paging!\n")); /* * Enable large pages (2 MB) if applicable. */ #if HC_ARCH_BITS == 64 if (pVM->hm.s.fLargePages) { PGMSetLargePageUsage(pVM, true); LogRel(("HM: Large page support enabled!\n")); } #endif } hmR3DisableRawMode(pVM); /* * Change the CPU features. */ CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_SEP); CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_SYSCALL); if (pVM->hm.s.fAllow64BitGuests) { CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_PAE); CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_LONG_MODE); CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_NX); CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_LAHF); } /* Turn on NXE if PAE has been enabled. */ else if (CPUMGetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_PAE)) CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_NX); LogRel((pVM->hm.s.fAllow64BitGuests ? "HM: 32-bit and 64-bit guest supported.\n" : "HM: 32-bit guest supported.\n")); LogRel(("HM: TPR Patching %s.\n", (pVM->hm.s.fTRPPatchingAllowed) ? "enabled" : "disabled")); return VINF_SUCCESS; } /** * Applies relocations to data and code managed by this * component. This function will be called at init and * whenever the VMM need to relocate it self inside the GC. * * @param pVM The VM. */ VMMR3_INT_DECL(void) HMR3Relocate(PVM pVM) { Log(("HMR3Relocate to %RGv\n", MMHyperGetArea(pVM, 0))); /* Fetch the current paging mode during the relocate callback during state loading. */ if (VMR3GetState(pVM) == VMSTATE_LOADING) { for (VMCPUID i = 0; i < pVM->cCpus; i++) { PVMCPU pVCpu = &pVM->aCpus[i]; pVCpu->hm.s.enmShadowMode = PGMGetShadowMode(pVCpu); #ifdef VBOX_WITH_OLD_VTX_CODE Assert(pVCpu->hm.s.vmx.enmCurrGuestMode == PGMGetGuestMode(pVCpu)); pVCpu->hm.s.vmx.enmCurrGuestMode = PGMGetGuestMode(pVCpu); #endif } } #if HC_ARCH_BITS == 32 && defined(VBOX_ENABLE_64_BITS_GUESTS) && !defined(VBOX_WITH_HYBRID_32BIT_KERNEL) if (HMIsEnabled(pVM)) { switch (PGMGetHostMode(pVM)) { case PGMMODE_32_BIT: pVM->hm.s.pfnHost32ToGuest64R0 = VMMR3GetHostToGuestSwitcher(pVM, VMMSWITCHER_32_TO_AMD64); break; case PGMMODE_PAE: case PGMMODE_PAE_NX: pVM->hm.s.pfnHost32ToGuest64R0 = VMMR3GetHostToGuestSwitcher(pVM, VMMSWITCHER_PAE_TO_AMD64); break; default: AssertFailed(); break; } } #endif return; } /** * Notification callback which is called whenever there is a chance that a CR3 * value might have changed. * * This is called by PGM. * * @param pVM Pointer to the VM. * @param pVCpu Pointer to the VMCPU. * @param enmShadowMode New shadow paging mode. * @param enmGuestMode New guest paging mode. */ VMMR3_INT_DECL(void) HMR3PagingModeChanged(PVM pVM, PVMCPU pVCpu, PGMMODE enmShadowMode, PGMMODE enmGuestMode) { /* Ignore page mode changes during state loading. */ if (VMR3GetState(pVCpu->pVMR3) == VMSTATE_LOADING) return; pVCpu->hm.s.enmShadowMode = enmShadowMode; #ifdef VBOX_WITH_OLD_VTX_CODE if ( pVM->hm.s.vmx.fEnabled && HMIsEnabled(pVM)) { if ( pVCpu->hm.s.vmx.enmLastSeenGuestMode == PGMMODE_REAL && enmGuestMode >= PGMMODE_PROTECTED) { PCPUMCTX pCtx; pCtx = CPUMQueryGuestCtxPtr(pVCpu); /* After a real mode switch to protected mode we must force CPL to 0. Our real mode emulation had to set it to 3. */ pCtx->ss.Attr.n.u2Dpl = 0; } } if (pVCpu->hm.s.vmx.enmCurrGuestMode != enmGuestMode) { /* Keep track of paging mode changes. */ pVCpu->hm.s.vmx.enmPrevGuestMode = pVCpu->hm.s.vmx.enmCurrGuestMode; pVCpu->hm.s.vmx.enmCurrGuestMode = enmGuestMode; /* Did we miss a change, because all code was executed in the recompiler? */ if (pVCpu->hm.s.vmx.enmLastSeenGuestMode == enmGuestMode) { Log(("HMR3PagingModeChanged missed %s->%s transition (prev %s)\n", PGMGetModeName(pVCpu->hm.s.vmx.enmPrevGuestMode), PGMGetModeName(pVCpu->hm.s.vmx.enmCurrGuestMode), PGMGetModeName(pVCpu->hm.s.vmx.enmLastSeenGuestMode))); pVCpu->hm.s.vmx.enmLastSeenGuestMode = pVCpu->hm.s.vmx.enmPrevGuestMode; } } #else /* If the guest left protected mode VMX execution, we'll have to be extra * careful if/when the guest switches back to protected mode. */ if (enmGuestMode == PGMMODE_REAL) { Log(("HMR3PagingModeChanged indicates real mode execution\n")); pVCpu->hm.s.vmx.fWasInRealMode = true; } #endif /** @todo r=ramshankar: Why do we need to do this? */ #ifdef VMX_USE_CACHED_VMCS_ACCESSES /* Reset the contents of the read cache. */ PVMCSCACHE pCache = &pVCpu->hm.s.vmx.VMCSCache; for (unsigned j = 0; j < pCache->Read.cValidEntries; j++) pCache->Read.aFieldVal[j] = 0; #endif } /** * Terminates the HM. * * Termination means cleaning up and freeing all resources, * the VM itself is, at this point, powered off or suspended. * * @returns VBox status code. * @param pVM Pointer to the VM. */ VMMR3_INT_DECL(int) HMR3Term(PVM pVM) { if (pVM->hm.s.vmx.pRealModeTSS) { PDMR3VmmDevHeapFree(pVM, pVM->hm.s.vmx.pRealModeTSS); pVM->hm.s.vmx.pRealModeTSS = 0; } hmR3TermCPU(pVM); return 0; } /** * Terminates the per-VCPU HM. * * @returns VBox status code. * @param pVM Pointer to the VM. */ static int hmR3TermCPU(PVM pVM) { for (VMCPUID i = 0; i < pVM->cCpus; i++) { PVMCPU pVCpu = &pVM->aCpus[i]; NOREF(pVCpu); #ifdef VBOX_WITH_STATISTICS if (pVCpu->hm.s.paStatExitReason) { MMHyperFree(pVM, pVCpu->hm.s.paStatExitReason); pVCpu->hm.s.paStatExitReason = NULL; pVCpu->hm.s.paStatExitReasonR0 = NIL_RTR0PTR; } if (pVCpu->hm.s.paStatInjectedIrqs) { MMHyperFree(pVM, pVCpu->hm.s.paStatInjectedIrqs); pVCpu->hm.s.paStatInjectedIrqs = NULL; pVCpu->hm.s.paStatInjectedIrqsR0 = NIL_RTR0PTR; } #endif #ifdef VBOX_WITH_CRASHDUMP_MAGIC memset(pVCpu->hm.s.vmx.VMCSCache.aMagic, 0, sizeof(pVCpu->hm.s.vmx.VMCSCache.aMagic)); pVCpu->hm.s.vmx.VMCSCache.uMagic = 0; pVCpu->hm.s.vmx.VMCSCache.uPos = 0xffffffff; #endif } return 0; } /** * Resets a virtual CPU. * * Used by HMR3Reset and CPU hot plugging. * * @param pVCpu The CPU to reset. */ VMMR3_INT_DECL(void) HMR3ResetCpu(PVMCPU pVCpu) { /* On first entry we'll sync everything. */ pVCpu->hm.s.fContextUseFlags = HM_CHANGED_ALL; pVCpu->hm.s.vmx.u32CR0Mask = 0; pVCpu->hm.s.vmx.u32CR4Mask = 0; pVCpu->hm.s.fActive = false; pVCpu->hm.s.Event.fPending = false; #ifdef VBOX_WITH_OLD_VTX_CODE /* Reset state information for real-mode emulation in VT-x. */ pVCpu->hm.s.vmx.enmLastSeenGuestMode = PGMMODE_REAL; pVCpu->hm.s.vmx.enmPrevGuestMode = PGMMODE_REAL; pVCpu->hm.s.vmx.enmCurrGuestMode = PGMMODE_REAL; #else pVCpu->hm.s.vmx.fWasInRealMode = true; #endif /* Reset the contents of the read cache. */ PVMCSCACHE pCache = &pVCpu->hm.s.vmx.VMCSCache; for (unsigned j = 0; j < pCache->Read.cValidEntries; j++) pCache->Read.aFieldVal[j] = 0; #ifdef VBOX_WITH_CRASHDUMP_MAGIC /* Magic marker for searching in crash dumps. */ strcpy((char *)pCache->aMagic, "VMCSCACHE Magic"); pCache->uMagic = UINT64_C(0xDEADBEEFDEADBEEF); #endif } /** * The VM is being reset. * * For the HM component this means that any GDT/LDT/TSS monitors * needs to be removed. * * @param pVM Pointer to the VM. */ VMMR3_INT_DECL(void) HMR3Reset(PVM pVM) { LogFlow(("HMR3Reset:\n")); if (HMIsEnabled(pVM)) hmR3DisableRawMode(pVM); for (VMCPUID i = 0; i < pVM->cCpus; i++) { PVMCPU pVCpu = &pVM->aCpus[i]; HMR3ResetCpu(pVCpu); } /* Clear all patch information. */ pVM->hm.s.pGuestPatchMem = 0; pVM->hm.s.pFreeGuestPatchMem = 0; pVM->hm.s.cbGuestPatchMem = 0; pVM->hm.s.cPatches = 0; pVM->hm.s.PatchTree = 0; pVM->hm.s.fTPRPatchingActive = false; ASMMemZero32(pVM->hm.s.aPatches, sizeof(pVM->hm.s.aPatches)); } /** * Callback to patch a TPR instruction (vmmcall or mov cr8). * * @returns VBox strict status code. * @param pVM Pointer to the VM. * @param pVCpu The VMCPU for the EMT we're being called on. * @param pvUser Unused. */ DECLCALLBACK(VBOXSTRICTRC) hmR3RemovePatches(PVM pVM, PVMCPU pVCpu, void *pvUser) { VMCPUID idCpu = (VMCPUID)(uintptr_t)pvUser; /* Only execute the handler on the VCPU the original patch request was issued. */ if (pVCpu->idCpu != idCpu) return VINF_SUCCESS; Log(("hmR3RemovePatches\n")); for (unsigned i = 0; i < pVM->hm.s.cPatches; i++) { uint8_t abInstr[15]; PHMTPRPATCH pPatch = &pVM->hm.s.aPatches[i]; RTGCPTR pInstrGC = (RTGCPTR)pPatch->Core.Key; int rc; #ifdef LOG_ENABLED char szOutput[256]; rc = DBGFR3DisasInstrEx(pVM->pUVM, pVCpu->idCpu, CPUMGetGuestCS(pVCpu), pInstrGC, DBGF_DISAS_FLAGS_DEFAULT_MODE, szOutput, sizeof(szOutput), NULL); if (RT_SUCCESS(rc)) Log(("Patched instr: %s\n", szOutput)); #endif /* Check if the instruction is still the same. */ rc = PGMPhysSimpleReadGCPtr(pVCpu, abInstr, pInstrGC, pPatch->cbNewOp); if (rc != VINF_SUCCESS) { Log(("Patched code removed? (rc=%Rrc0\n", rc)); continue; /* swapped out or otherwise removed; skip it. */ } if (memcmp(abInstr, pPatch->aNewOpcode, pPatch->cbNewOp)) { Log(("Patched instruction was changed! (rc=%Rrc0\n", rc)); continue; /* skip it. */ } rc = PGMPhysSimpleWriteGCPtr(pVCpu, pInstrGC, pPatch->aOpcode, pPatch->cbOp); AssertRC(rc); #ifdef LOG_ENABLED rc = DBGFR3DisasInstrEx(pVM->pUVM, pVCpu->idCpu, CPUMGetGuestCS(pVCpu), pInstrGC, DBGF_DISAS_FLAGS_DEFAULT_MODE, szOutput, sizeof(szOutput), NULL); if (RT_SUCCESS(rc)) Log(("Original instr: %s\n", szOutput)); #endif } pVM->hm.s.cPatches = 0; pVM->hm.s.PatchTree = 0; pVM->hm.s.pFreeGuestPatchMem = pVM->hm.s.pGuestPatchMem; pVM->hm.s.fTPRPatchingActive = false; return VINF_SUCCESS; } /** * Worker for enabling patching in a VT-x/AMD-V guest. * * @returns VBox status code. * @param pVM Pointer to the VM. * @param idCpu VCPU to execute hmR3RemovePatches on. * @param pPatchMem Patch memory range. * @param cbPatchMem Size of the memory range. */ static int hmR3EnablePatching(PVM pVM, VMCPUID idCpu, RTRCPTR pPatchMem, unsigned cbPatchMem) { int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE, hmR3RemovePatches, (void *)(uintptr_t)idCpu); AssertRC(rc); pVM->hm.s.pGuestPatchMem = pPatchMem; pVM->hm.s.pFreeGuestPatchMem = pPatchMem; pVM->hm.s.cbGuestPatchMem = cbPatchMem; return VINF_SUCCESS; } /** * Enable patching in a VT-x/AMD-V guest * * @returns VBox status code. * @param pVM Pointer to the VM. * @param pPatchMem Patch memory range. * @param cbPatchMem Size of the memory range. */ VMMR3_INT_DECL(int) HMR3EnablePatching(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem) { VM_ASSERT_EMT(pVM); Log(("HMR3EnablePatching %RGv size %x\n", pPatchMem, cbPatchMem)); if (pVM->cCpus > 1) { /* We own the IOM lock here and could cause a deadlock by waiting for a VCPU that is blocking on the IOM lock. */ int rc = VMR3ReqCallNoWait(pVM, VMCPUID_ANY_QUEUE, (PFNRT)hmR3EnablePatching, 4, pVM, VMMGetCpuId(pVM), (RTRCPTR)pPatchMem, cbPatchMem); AssertRC(rc); return rc; } return hmR3EnablePatching(pVM, VMMGetCpuId(pVM), (RTRCPTR)pPatchMem, cbPatchMem); } /** * Disable patching in a VT-x/AMD-V guest. * * @returns VBox status code. * @param pVM Pointer to the VM. * @param pPatchMem Patch memory range. * @param cbPatchMem Size of the memory range. */ VMMR3_INT_DECL(int) HMR3DisablePatching(PVM pVM, RTGCPTR pPatchMem, unsigned cbPatchMem) { Log(("HMR3DisablePatching %RGv size %x\n", pPatchMem, cbPatchMem)); Assert(pVM->hm.s.pGuestPatchMem == pPatchMem); Assert(pVM->hm.s.cbGuestPatchMem == cbPatchMem); /* @todo Potential deadlock when other VCPUs are waiting on the IOM lock (we own it)!! */ int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE, hmR3RemovePatches, (void *)(uintptr_t)VMMGetCpuId(pVM)); AssertRC(rc); pVM->hm.s.pGuestPatchMem = 0; pVM->hm.s.pFreeGuestPatchMem = 0; pVM->hm.s.cbGuestPatchMem = 0; pVM->hm.s.fTPRPatchingActive = false; return VINF_SUCCESS; } /** * Callback to patch a TPR instruction (vmmcall or mov cr8). * * @returns VBox strict status code. * @param pVM Pointer to the VM. * @param pVCpu The VMCPU for the EMT we're being called on. * @param pvUser User specified CPU context. * */ DECLCALLBACK(VBOXSTRICTRC) hmR3ReplaceTprInstr(PVM pVM, PVMCPU pVCpu, void *pvUser) { /* * Only execute the handler on the VCPU the original patch request was * issued. (The other CPU(s) might not yet have switched to protected * mode, nor have the correct memory context.) */ VMCPUID idCpu = (VMCPUID)(uintptr_t)pvUser; if (pVCpu->idCpu != idCpu) return VINF_SUCCESS; /* * We're racing other VCPUs here, so don't try patch the instruction twice * and make sure there is still room for our patch record. */ PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu); PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip); if (pPatch) { Log(("hmR3ReplaceTprInstr: already patched %RGv\n", pCtx->rip)); return VINF_SUCCESS; } uint32_t const idx = pVM->hm.s.cPatches; if (idx >= RT_ELEMENTS(pVM->hm.s.aPatches)) { Log(("hmR3ReplaceTprInstr: no available patch slots (%RGv)\n", pCtx->rip)); return VINF_SUCCESS; } pPatch = &pVM->hm.s.aPatches[idx]; Log(("hmR3ReplaceTprInstr: rip=%RGv idxPatch=%u\n", pCtx->rip, idx)); /* * Disassembler the instruction and get cracking. */ DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, "hmR3ReplaceTprInstr"); PDISCPUSTATE pDis = &pVCpu->hm.s.DisState; uint32_t cbOp; int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, &cbOp); AssertRC(rc); if ( rc == VINF_SUCCESS && pDis->pCurInstr->uOpcode == OP_MOV && cbOp >= 3) { static uint8_t const s_abVMMCall[3] = { 0x0f, 0x01, 0xd9 }; rc = PGMPhysSimpleReadGCPtr(pVCpu, pPatch->aOpcode, pCtx->rip, cbOp); AssertRC(rc); pPatch->cbOp = cbOp; if (pDis->Param1.fUse == DISUSE_DISPLACEMENT32) { /* write. */ if (pDis->Param2.fUse == DISUSE_REG_GEN32) { pPatch->enmType = HMTPRINSTR_WRITE_REG; pPatch->uSrcOperand = pDis->Param2.Base.idxGenReg; Log(("hmR3ReplaceTprInstr: HMTPRINSTR_WRITE_REG %u\n", pDis->Param2.Base.idxGenReg)); } else { Assert(pDis->Param2.fUse == DISUSE_IMMEDIATE32); pPatch->enmType = HMTPRINSTR_WRITE_IMM; pPatch->uSrcOperand = pDis->Param2.uValue; Log(("hmR3ReplaceTprInstr: HMTPRINSTR_WRITE_IMM %#llx\n", pDis->Param2.uValue)); } rc = PGMPhysSimpleWriteGCPtr(pVCpu, pCtx->rip, s_abVMMCall, sizeof(s_abVMMCall)); AssertRC(rc); memcpy(pPatch->aNewOpcode, s_abVMMCall, sizeof(s_abVMMCall)); pPatch->cbNewOp = sizeof(s_abVMMCall); } else { /* * TPR Read. * * Found: * mov eax, dword [fffe0080] (5 bytes) * Check if next instruction is: * shr eax, 4 */ Assert(pDis->Param1.fUse == DISUSE_REG_GEN32); uint8_t const idxMmioReg = pDis->Param1.Base.idxGenReg; uint8_t const cbOpMmio = cbOp; uint64_t const uSavedRip = pCtx->rip; pCtx->rip += cbOp; rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, &cbOp); DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, "Following read"); pCtx->rip = uSavedRip; if ( rc == VINF_SUCCESS && pDis->pCurInstr->uOpcode == OP_SHR && pDis->Param1.fUse == DISUSE_REG_GEN32 && pDis->Param1.Base.idxGenReg == idxMmioReg && pDis->Param2.fUse == DISUSE_IMMEDIATE8 && pDis->Param2.uValue == 4 && cbOpMmio + cbOp < sizeof(pVM->hm.s.aPatches[idx].aOpcode)) { uint8_t abInstr[15]; /* Replacing the two instructions above with an AMD-V specific lock-prefixed 32-bit MOV CR8 instruction so as to access CR8 in 32-bit mode and not cause a #VMEXIT. */ rc = PGMPhysSimpleReadGCPtr(pVCpu, &pPatch->aOpcode, pCtx->rip, cbOpMmio + cbOp); AssertRC(rc); pPatch->cbOp = cbOpMmio + cbOp; /* 0xF0, 0x0F, 0x20, 0xC0 = mov eax, cr8 */ abInstr[0] = 0xF0; abInstr[1] = 0x0F; abInstr[2] = 0x20; abInstr[3] = 0xC0 | pDis->Param1.Base.idxGenReg; for (unsigned i = 4; i < pPatch->cbOp; i++) abInstr[i] = 0x90; /* nop */ rc = PGMPhysSimpleWriteGCPtr(pVCpu, pCtx->rip, abInstr, pPatch->cbOp); AssertRC(rc); memcpy(pPatch->aNewOpcode, abInstr, pPatch->cbOp); pPatch->cbNewOp = pPatch->cbOp; Log(("Acceptable read/shr candidate!\n")); pPatch->enmType = HMTPRINSTR_READ_SHR4; } else { pPatch->enmType = HMTPRINSTR_READ; pPatch->uDstOperand = idxMmioReg; rc = PGMPhysSimpleWriteGCPtr(pVCpu, pCtx->rip, s_abVMMCall, sizeof(s_abVMMCall)); AssertRC(rc); memcpy(pPatch->aNewOpcode, s_abVMMCall, sizeof(s_abVMMCall)); pPatch->cbNewOp = sizeof(s_abVMMCall); Log(("hmR3ReplaceTprInstr: HMTPRINSTR_READ %u\n", pPatch->uDstOperand)); } } pPatch->Core.Key = pCtx->eip; rc = RTAvloU32Insert(&pVM->hm.s.PatchTree, &pPatch->Core); AssertRC(rc); pVM->hm.s.cPatches++; STAM_COUNTER_INC(&pVM->hm.s.StatTprReplaceSuccess); return VINF_SUCCESS; } /* * Save invalid patch, so we will not try again. */ Log(("hmR3ReplaceTprInstr: Failed to patch instr!\n")); pPatch->Core.Key = pCtx->eip; pPatch->enmType = HMTPRINSTR_INVALID; rc = RTAvloU32Insert(&pVM->hm.s.PatchTree, &pPatch->Core); AssertRC(rc); pVM->hm.s.cPatches++; STAM_COUNTER_INC(&pVM->hm.s.StatTprReplaceFailure); return VINF_SUCCESS; } /** * Callback to patch a TPR instruction (jump to generated code). * * @returns VBox strict status code. * @param pVM Pointer to the VM. * @param pVCpu The VMCPU for the EMT we're being called on. * @param pvUser User specified CPU context. * */ DECLCALLBACK(VBOXSTRICTRC) hmR3PatchTprInstr(PVM pVM, PVMCPU pVCpu, void *pvUser) { /* * Only execute the handler on the VCPU the original patch request was * issued. (The other CPU(s) might not yet have switched to protected * mode, nor have the correct memory context.) */ VMCPUID idCpu = (VMCPUID)(uintptr_t)pvUser; if (pVCpu->idCpu != idCpu) return VINF_SUCCESS; /* * We're racing other VCPUs here, so don't try patch the instruction twice * and make sure there is still room for our patch record. */ PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu); PHMTPRPATCH pPatch = (PHMTPRPATCH)RTAvloU32Get(&pVM->hm.s.PatchTree, (AVLOU32KEY)pCtx->eip); if (pPatch) { Log(("hmR3PatchTprInstr: already patched %RGv\n", pCtx->rip)); return VINF_SUCCESS; } uint32_t const idx = pVM->hm.s.cPatches; if (idx >= RT_ELEMENTS(pVM->hm.s.aPatches)) { Log(("hmR3PatchTprInstr: no available patch slots (%RGv)\n", pCtx->rip)); return VINF_SUCCESS; } pPatch = &pVM->hm.s.aPatches[idx]; Log(("hmR3PatchTprInstr: rip=%RGv idxPatch=%u\n", pCtx->rip, idx)); DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, "hmR3PatchTprInstr"); /* * Disassemble the instruction and get cracking. */ PDISCPUSTATE pDis = &pVCpu->hm.s.DisState; uint32_t cbOp; int rc = EMInterpretDisasCurrent(pVM, pVCpu, pDis, &cbOp); AssertRC(rc); if ( rc == VINF_SUCCESS && pDis->pCurInstr->uOpcode == OP_MOV && cbOp >= 5) { uint8_t aPatch[64]; uint32_t off = 0; rc = PGMPhysSimpleReadGCPtr(pVCpu, pPatch->aOpcode, pCtx->rip, cbOp); AssertRC(rc); pPatch->cbOp = cbOp; pPatch->enmType = HMTPRINSTR_JUMP_REPLACEMENT; if (pDis->Param1.fUse == DISUSE_DISPLACEMENT32) { /* * TPR write: * * push ECX [51] * push EDX [52] * push EAX [50] * xor EDX,EDX [31 D2] * mov EAX,EAX [89 C0] * or * mov EAX,0000000CCh [B8 CC 00 00 00] * mov ECX,0C0000082h [B9 82 00 00 C0] * wrmsr [0F 30] * pop EAX [58] * pop EDX [5A] * pop ECX [59] * jmp return_address [E9 return_address] * */ bool fUsesEax = (pDis->Param2.fUse == DISUSE_REG_GEN32 && pDis->Param2.Base.idxGenReg == DISGREG_EAX); aPatch[off++] = 0x51; /* push ecx */ aPatch[off++] = 0x52; /* push edx */ if (!fUsesEax) aPatch[off++] = 0x50; /* push eax */ aPatch[off++] = 0x31; /* xor edx, edx */ aPatch[off++] = 0xD2; if (pDis->Param2.fUse == DISUSE_REG_GEN32) { if (!fUsesEax) { aPatch[off++] = 0x89; /* mov eax, src_reg */ aPatch[off++] = MAKE_MODRM(3, pDis->Param2.Base.idxGenReg, DISGREG_EAX); } } else { Assert(pDis->Param2.fUse == DISUSE_IMMEDIATE32); aPatch[off++] = 0xB8; /* mov eax, immediate */ *(uint32_t *)&aPatch[off] = pDis->Param2.uValue; off += sizeof(uint32_t); } aPatch[off++] = 0xB9; /* mov ecx, 0xc0000082 */ *(uint32_t *)&aPatch[off] = MSR_K8_LSTAR; off += sizeof(uint32_t); aPatch[off++] = 0x0F; /* wrmsr */ aPatch[off++] = 0x30; if (!fUsesEax) aPatch[off++] = 0x58; /* pop eax */ aPatch[off++] = 0x5A; /* pop edx */ aPatch[off++] = 0x59; /* pop ecx */ } else { /* * TPR read: * * push ECX [51] * push EDX [52] * push EAX [50] * mov ECX,0C0000082h [B9 82 00 00 C0] * rdmsr [0F 32] * mov EAX,EAX [89 C0] * pop EAX [58] * pop EDX [5A] * pop ECX [59] * jmp return_address [E9 return_address] * */ Assert(pDis->Param1.fUse == DISUSE_REG_GEN32); if (pDis->Param1.Base.idxGenReg != DISGREG_ECX) aPatch[off++] = 0x51; /* push ecx */ if (pDis->Param1.Base.idxGenReg != DISGREG_EDX ) aPatch[off++] = 0x52; /* push edx */ if (pDis->Param1.Base.idxGenReg != DISGREG_EAX) aPatch[off++] = 0x50; /* push eax */ aPatch[off++] = 0x31; /* xor edx, edx */ aPatch[off++] = 0xD2; aPatch[off++] = 0xB9; /* mov ecx, 0xc0000082 */ *(uint32_t *)&aPatch[off] = MSR_K8_LSTAR; off += sizeof(uint32_t); aPatch[off++] = 0x0F; /* rdmsr */ aPatch[off++] = 0x32; if (pDis->Param1.Base.idxGenReg != DISGREG_EAX) { aPatch[off++] = 0x89; /* mov dst_reg, eax */ aPatch[off++] = MAKE_MODRM(3, DISGREG_EAX, pDis->Param1.Base.idxGenReg); } if (pDis->Param1.Base.idxGenReg != DISGREG_EAX) aPatch[off++] = 0x58; /* pop eax */ if (pDis->Param1.Base.idxGenReg != DISGREG_EDX ) aPatch[off++] = 0x5A; /* pop edx */ if (pDis->Param1.Base.idxGenReg != DISGREG_ECX) aPatch[off++] = 0x59; /* pop ecx */ } aPatch[off++] = 0xE9; /* jmp return_address */ *(RTRCUINTPTR *)&aPatch[off] = ((RTRCUINTPTR)pCtx->eip + cbOp) - ((RTRCUINTPTR)pVM->hm.s.pFreeGuestPatchMem + off + 4); off += sizeof(RTRCUINTPTR); if (pVM->hm.s.pFreeGuestPatchMem + off <= pVM->hm.s.pGuestPatchMem + pVM->hm.s.cbGuestPatchMem) { /* Write new code to the patch buffer. */ rc = PGMPhysSimpleWriteGCPtr(pVCpu, pVM->hm.s.pFreeGuestPatchMem, aPatch, off); AssertRC(rc); #ifdef LOG_ENABLED uint32_t cbCurInstr; for (RTGCPTR GCPtrInstr = pVM->hm.s.pFreeGuestPatchMem; GCPtrInstr < pVM->hm.s.pFreeGuestPatchMem + off; GCPtrInstr += RT_MAX(cbCurInstr, 1)) { char szOutput[256]; rc = DBGFR3DisasInstrEx(pVM->pUVM, pVCpu->idCpu, pCtx->cs.Sel, GCPtrInstr, DBGF_DISAS_FLAGS_DEFAULT_MODE, szOutput, sizeof(szOutput), &cbCurInstr); if (RT_SUCCESS(rc)) Log(("Patch instr %s\n", szOutput)); else Log(("%RGv: rc=%Rrc\n", GCPtrInstr, rc)); } #endif pPatch->aNewOpcode[0] = 0xE9; *(RTRCUINTPTR *)&pPatch->aNewOpcode[1] = ((RTRCUINTPTR)pVM->hm.s.pFreeGuestPatchMem) - ((RTRCUINTPTR)pCtx->eip + 5); /* Overwrite the TPR instruction with a jump. */ rc = PGMPhysSimpleWriteGCPtr(pVCpu, pCtx->eip, pPatch->aNewOpcode, 5); AssertRC(rc); DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, "Jump"); pVM->hm.s.pFreeGuestPatchMem += off; pPatch->cbNewOp = 5; pPatch->Core.Key = pCtx->eip; rc = RTAvloU32Insert(&pVM->hm.s.PatchTree, &pPatch->Core); AssertRC(rc); pVM->hm.s.cPatches++; pVM->hm.s.fTPRPatchingActive = true; STAM_COUNTER_INC(&pVM->hm.s.StatTprPatchSuccess); return VINF_SUCCESS; } Log(("Ran out of space in our patch buffer!\n")); } else Log(("hmR3PatchTprInstr: Failed to patch instr!\n")); /* * Save invalid patch, so we will not try again. */ pPatch = &pVM->hm.s.aPatches[idx]; pPatch->Core.Key = pCtx->eip; pPatch->enmType = HMTPRINSTR_INVALID; rc = RTAvloU32Insert(&pVM->hm.s.PatchTree, &pPatch->Core); AssertRC(rc); pVM->hm.s.cPatches++; STAM_COUNTER_INC(&pVM->hm.s.StatTprPatchFailure); return VINF_SUCCESS; } /** * Attempt to patch TPR mmio instructions. * * @returns VBox status code. * @param pVM Pointer to the VM. * @param pVCpu Pointer to the VMCPU. * @param pCtx Pointer to the guest CPU context. */ VMMR3_INT_DECL(int) HMR3PatchTprInstr(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx) { NOREF(pCtx); int rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONE_BY_ONE, pVM->hm.s.pGuestPatchMem ? hmR3PatchTprInstr : hmR3ReplaceTprInstr, (void *)(uintptr_t)pVCpu->idCpu); AssertRC(rc); return rc; } /** * Checks if a code selector (CS) is suitable for execution * within VMX when unrestricted execution isn't available. * * @returns true if selector is suitable for VMX, otherwise * false. * @param pSel Pointer to the selector to check (CS). * uStackDpl The DPL of the stack segment. */ static bool hmR3IsCodeSelectorOkForVmx(PCPUMSELREG pSel, unsigned uStackDpl) { bool rc = false; do { /* Segment must be accessed. */ if (!(pSel->Attr.u & X86_SEL_TYPE_ACCESSED)) break; /* Segment must be a code segment. */ if (!(pSel->Attr.u & X86_SEL_TYPE_CODE)) break; /* The S bit must be set. */ if (!pSel->Attr.n.u1DescType) break; if (pSel->Attr.n.u4Type & X86_SEL_TYPE_CONF) { /* For conforming segments, CS.DPL must be <= SS.DPL. */ if (pSel->Attr.n.u2Dpl > uStackDpl) break; } else { /* For non-conforming segments, CS.DPL must equal SS.DPL. */ if (pSel->Attr.n.u2Dpl != uStackDpl) break; } /* Segment must be present. */ if (!pSel->Attr.n.u1Present) break; /* G bit must be set if any high limit bits are set. */ if ((pSel->u32Limit & 0xfff00000) && !pSel->Attr.n.u1Granularity) break; /* G bit must be clear if any low limit bits are clear. */ if ((pSel->u32Limit & 0x0fff) != 0x0fff && pSel->Attr.n.u1Granularity) break; rc = true; } while (0); return rc; } /** * Checks if a data selector (DS/ES/FS/GS) is suitable for * execution within VMX when unrestricted execution isn't * available. * * @returns true if selector is suitable for VMX, otherwise * false. * @param pSel Pointer to the selector to check * (DS/ES/FS/GS). */ static bool hmR3IsDataSelectorOkForVmx(PCPUMSELREG pSel) { bool rc = false; /* If attributes are all zero, consider the segment unusable and therefore OK. * This logic must be in sync with HMVMXR0.cpp! */ if (!pSel->Attr.u) return true; do { /* Segment must be accessed. */ if (!(pSel->Attr.u & X86_SEL_TYPE_ACCESSED)) break; /* Code segments must also be readable. */ if (pSel->Attr.u & X86_SEL_TYPE_CODE && !(pSel->Attr.u & X86_SEL_TYPE_READ)) break; /* The S bit must be set. */ if (!pSel->Attr.n.u1DescType) break; /* Except for conforming segments, DPL >= RPL. */ if (pSel->Attr.n.u4Type <= X86_SEL_TYPE_ER_ACC && pSel->Attr.n.u2Dpl < (pSel->Sel & X86_SEL_RPL)) break; /* Segment must be present. */ if (!pSel->Attr.n.u1Present) break; /* G bit must be set if any high limit bits are set. */ if ((pSel->u32Limit & 0xfff00000) && !pSel->Attr.n.u1Granularity) break; /* G bit must be clear if any low limit bits are clear. */ if ((pSel->u32Limit & 0x0fff) != 0x0fff && pSel->Attr.n.u1Granularity) break; rc = true; } while (0); return rc; } /** * Checks if the stack selector (SS) is suitable for execution * within VMX when unrestricted execution isn't available. * * @returns true if selector is suitable for VMX, otherwise * false. * @param pSel Pointer to the selector to check (SS). */ static bool hmR3IsStackSelectorOkForVmx(PCPUMSELREG pSel) { bool rc = false; /* If attributes are all zero, consider the segment unusable and therefore OK. * This logic must be in sync with HMVMXR0.cpp! */ if (!pSel->Attr.u) return true; do { /* Segment must be accessed. */ if (!(pSel->Attr.u & X86_SEL_TYPE_ACCESSED)) break; /* Segment must be writable. */ if (!(pSel->Attr.u & X86_SEL_TYPE_WRITE)) break; /* Segment must not be a code segment. */ if (pSel->Attr.u & X86_SEL_TYPE_CODE) break; /* The S bit must be set. */ if (!pSel->Attr.n.u1DescType) break; /* DPL must equal RPL. */ if (pSel->Attr.n.u2Dpl != (pSel->Sel & X86_SEL_RPL)) break; /* Segment must be present. */ if (!pSel->Attr.n.u1Present) break; /* G bit must be set if any high limit bits are set. */ if ((pSel->u32Limit & 0xfff00000) && !pSel->Attr.n.u1Granularity) break; /* G bit must be clear if any low limit bits are clear. */ if ((pSel->u32Limit & 0x0fff) != 0x0fff && pSel->Attr.n.u1Granularity) break; rc = true; } while (0); return rc; } /** * Force execution of the current IO code in the recompiler. * * @returns VBox status code. * @param pVM Pointer to the VM. * @param pCtx Partial VM execution context. */ VMMR3_INT_DECL(int) HMR3EmulateIoBlock(PVM pVM, PCPUMCTX pCtx) { PVMCPU pVCpu = VMMGetCpu(pVM); Assert(HMIsEnabled(pVM)); Log(("HMR3EmulateIoBlock\n")); /* This is primarily intended to speed up Grub, so we don't care about paged protected mode. */ if (HMCanEmulateIoBlockEx(pCtx)) { Log(("HMR3EmulateIoBlock -> enabled\n")); pVCpu->hm.s.EmulateIoBlock.fEnabled = true; pVCpu->hm.s.EmulateIoBlock.GCPtrFunctionEip = pCtx->rip; pVCpu->hm.s.EmulateIoBlock.cr0 = pCtx->cr0; return VINF_EM_RESCHEDULE_REM; } return VINF_SUCCESS; } /** * Checks if we can currently use hardware accelerated raw mode. * * @returns true if we can currently use hardware acceleration, otherwise false. * @param pVM Pointer to the VM. * @param pCtx Partial VM execution context. */ VMMR3DECL(bool) HMR3CanExecuteGuest(PVM pVM, PCPUMCTX pCtx) { PVMCPU pVCpu = VMMGetCpu(pVM); Assert(HMIsEnabled(pVM)); /* If we're still executing the IO code, then return false. */ if ( RT_UNLIKELY(pVCpu->hm.s.EmulateIoBlock.fEnabled) && pCtx->rip < pVCpu->hm.s.EmulateIoBlock.GCPtrFunctionEip + 0x200 && pCtx->rip > pVCpu->hm.s.EmulateIoBlock.GCPtrFunctionEip - 0x200 && pCtx->cr0 == pVCpu->hm.s.EmulateIoBlock.cr0) return false; pVCpu->hm.s.EmulateIoBlock.fEnabled = false; /* AMD-V supports real & protected mode with or without paging. */ if (pVM->hm.s.svm.fEnabled) { pVCpu->hm.s.fActive = true; return true; } pVCpu->hm.s.fActive = false; /* Note! The context supplied by REM is partial. If we add more checks here, be sure to verify that REM provides this info! */ Assert( (pVM->hm.s.vmx.fUnrestrictedGuest && !pVM->hm.s.vmx.pRealModeTSS) || (!pVM->hm.s.vmx.fUnrestrictedGuest && pVM->hm.s.vmx.pRealModeTSS)); bool fSupportsRealMode = pVM->hm.s.vmx.fUnrestrictedGuest || PDMVmmDevHeapIsEnabled(pVM); if (!pVM->hm.s.vmx.fUnrestrictedGuest) { /* * The VMM device heap is a requirement for emulating real mode or protected mode without paging with the unrestricted * guest execution feature i missing (VT-x only). */ if (fSupportsRealMode) { if (CPUMIsGuestInRealModeEx(pCtx)) { /* In V86 mode (VT-x or not), the CPU enforces real-mode compatible selector * bases and limits, i.e. limit must be 64K and base must be selector * 16. * If this is not true, we cannot execute real mode as V86 and have to fall * back to emulation. */ if ( pCtx->cs.Sel != (pCtx->cs.u64Base >> 4) || pCtx->ds.Sel != (pCtx->ds.u64Base >> 4) || pCtx->es.Sel != (pCtx->es.u64Base >> 4) || pCtx->ss.Sel != (pCtx->ss.u64Base >> 4) || pCtx->fs.Sel != (pCtx->fs.u64Base >> 4) || pCtx->gs.Sel != (pCtx->gs.u64Base >> 4)) { STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxCheckBadRmSelBase); return false; } if ( (pCtx->cs.u32Limit != 0xffff) || (pCtx->ds.u32Limit != 0xffff) || (pCtx->es.u32Limit != 0xffff) || (pCtx->ss.u32Limit != 0xffff) || (pCtx->fs.u32Limit != 0xffff) || (pCtx->gs.u32Limit != 0xffff)) { STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxCheckBadRmSelLimit); return false; } STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxCheckRmOk); } else { PGMMODE enmGuestMode = PGMGetGuestMode(pVCpu); /* Verify the requirements for executing code in protected mode. VT-x can't handle the CPU state right after a switch from real to protected mode. (all sorts of RPL & DPL assumptions) */ #if VBOX_WITH_OLD_VTX_CODE if ( pVCpu->hm.s.vmx.enmLastSeenGuestMode == PGMMODE_REAL && enmGuestMode >= PGMMODE_PROTECTED) #else if (pVCpu->hm.s.vmx.fWasInRealMode) #endif { //@todo: If guest is in V86 mode, these checks should be different! #if VBOX_WITH_OLD_VTX_CODE if ( (pCtx->cs.Sel & X86_SEL_RPL) || (pCtx->ds.Sel & X86_SEL_RPL) || (pCtx->es.Sel & X86_SEL_RPL) || (pCtx->fs.Sel & X86_SEL_RPL) || (pCtx->gs.Sel & X86_SEL_RPL) || (pCtx->ss.Sel & X86_SEL_RPL)) { STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxCheckBadSel); return false; } #else if ((pCtx->cs.Sel & X86_SEL_RPL) != (pCtx->ss.Sel & X86_SEL_RPL)) { STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxCheckBadRpl); return false; } if ( !hmR3IsCodeSelectorOkForVmx(&pCtx->cs, pCtx->ss.Attr.n.u2Dpl) || !hmR3IsDataSelectorOkForVmx(&pCtx->ds) || !hmR3IsDataSelectorOkForVmx(&pCtx->es) || !hmR3IsDataSelectorOkForVmx(&pCtx->fs) || !hmR3IsDataSelectorOkForVmx(&pCtx->gs) || !hmR3IsStackSelectorOkForVmx(&pCtx->ss)) { STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxCheckBadSel); return false; } #endif } /* VT-x also chokes on invalid tr or ldtr selectors (minix) */ if (pCtx->gdtr.cbGdt) { if (pCtx->tr.Sel > pCtx->gdtr.cbGdt) { STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxCheckBadTr); return false; } else if (pCtx->ldtr.Sel > pCtx->gdtr.cbGdt) { STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxCheckBadLdt); return false; } } STAM_COUNTER_INC(&pVCpu->hm.s.StatVmxCheckPmOk); } } else { if ( !CPUMIsGuestInLongModeEx(pCtx) && !pVM->hm.s.vmx.fUnrestrictedGuest) { /** @todo This should (probably) be set on every excursion to the REM, * however it's too risky right now. So, only apply it when we go * back to REM for real mode execution. (The XP hack below doesn't * work reliably without this.) * Update: Implemented in EM.cpp, see #ifdef EM_NOTIFY_HM. */ for (uint32_t i = 0; i < pVM->cCpus; i++) pVM->aCpus[i].hm.s.fContextUseFlags |= HM_CHANGED_ALL_GUEST; if ( !pVM->hm.s.fNestedPaging /* requires a fake PD for real *and* protected mode without paging - stored in the VMM device heap */ || CPUMIsGuestInRealModeEx(pCtx)) /* requires a fake TSS for real mode - stored in the VMM device heap */ return false; /* Too early for VT-x; Solaris guests will fail with a guru meditation otherwise; same for XP. */ if (pCtx->idtr.pIdt == 0 || pCtx->idtr.cbIdt == 0 || pCtx->tr.Sel == 0) return false; /* The guest is about to complete the switch to protected mode. Wait a bit longer. */ /* Windows XP; switch to protected mode; all selectors are marked not present in the * hidden registers (possible recompiler bug; see load_seg_vm) */ if (pCtx->cs.Attr.n.u1Present == 0) return false; if (pCtx->ss.Attr.n.u1Present == 0) return false; /* Windows XP: possible same as above, but new recompiler requires new heuristics? VT-x doesn't seem to like something about the guest state and this stuff avoids it. */ /** @todo This check is actually wrong, it doesn't take the direction of the * stack segment into account. But, it does the job for now. */ if (pCtx->rsp >= pCtx->ss.u32Limit) return false; #if 0 if ( pCtx->cs.Sel >= pCtx->gdtr.cbGdt || pCtx->ss.Sel >= pCtx->gdtr.cbGdt || pCtx->ds.Sel >= pCtx->gdtr.cbGdt || pCtx->es.Sel >= pCtx->gdtr.cbGdt || pCtx->fs.Sel >= pCtx->gdtr.cbGdt || pCtx->gs.Sel >= pCtx->gdtr.cbGdt) return false; #endif } } } if (pVM->hm.s.vmx.fEnabled) { uint32_t mask; /* if bit N is set in cr0_fixed0, then it must be set in the guest's cr0. */ mask = (uint32_t)pVM->hm.s.vmx.msr.vmx_cr0_fixed0; /* Note: We ignore the NE bit here on purpose; see vmmr0\hmr0.cpp for details. */ mask &= ~X86_CR0_NE; if (fSupportsRealMode) { /* Note: We ignore the PE & PG bits here on purpose; we emulate real and protected mode without paging. */ mask &= ~(X86_CR0_PG|X86_CR0_PE); } else { /* We support protected mode without paging using identity mapping. */ mask &= ~X86_CR0_PG; } if ((pCtx->cr0 & mask) != mask) return false; /* if bit N is cleared in cr0_fixed1, then it must be zero in the guest's cr0. */ mask = (uint32_t)~pVM->hm.s.vmx.msr.vmx_cr0_fixed1; if ((pCtx->cr0 & mask) != 0) return false; /* if bit N is set in cr4_fixed0, then it must be set in the guest's cr4. */ mask = (uint32_t)pVM->hm.s.vmx.msr.vmx_cr4_fixed0; mask &= ~X86_CR4_VMXE; if ((pCtx->cr4 & mask) != mask) return false; /* if bit N is cleared in cr4_fixed1, then it must be zero in the guest's cr4. */ mask = (uint32_t)~pVM->hm.s.vmx.msr.vmx_cr4_fixed1; if ((pCtx->cr4 & mask) != 0) return false; pVCpu->hm.s.fActive = true; return true; } return false; } /** * Checks if we need to reschedule due to VMM device heap changes. * * @returns true if a reschedule is required, otherwise false. * @param pVM Pointer to the VM. * @param pCtx VM execution context. */ VMMR3_INT_DECL(bool) HMR3IsRescheduleRequired(PVM pVM, PCPUMCTX pCtx) { /* * The VMM device heap is a requirement for emulating real-mode or protected-mode without paging * when the unrestricted guest execution feature is missing (VT-x only). */ #ifdef VBOX_WITH_OLD_VTX_CODE if ( pVM->hm.s.vmx.fEnabled && !pVM->hm.s.vmx.fUnrestrictedGuest && !CPUMIsGuestInPagedProtectedModeEx(pCtx) && !PDMVmmDevHeapIsEnabled(pVM) && (pVM->hm.s.fNestedPaging || CPUMIsGuestInRealModeEx(pCtx))) return true; #else if ( pVM->hm.s.vmx.fEnabled && !pVM->hm.s.vmx.fUnrestrictedGuest && CPUMIsGuestInRealModeEx(pCtx) && !PDMVmmDevHeapIsEnabled(pVM)) return true; #endif return false; } /** * Notification from EM about a rescheduling into hardware assisted execution * mode. * * @param pVCpu Pointer to the current VMCPU. */ VMMR3_INT_DECL(void) HMR3NotifyScheduled(PVMCPU pVCpu) { pVCpu->hm.s.fContextUseFlags |= HM_CHANGED_ALL_GUEST; } /** * Notification from EM about returning from instruction emulation (REM / EM). * * @param pVCpu Pointer to the VMCPU. */ VMMR3_INT_DECL(void) HMR3NotifyEmulated(PVMCPU pVCpu) { pVCpu->hm.s.fContextUseFlags |= HM_CHANGED_ALL_GUEST; } /** * Checks if we are currently using hardware accelerated raw mode. * * @returns true if hardware acceleration is being used, otherwise false. * @param pVCpu Pointer to the VMCPU. */ VMMR3_INT_DECL(bool) HMR3IsActive(PVMCPU pVCpu) { return pVCpu->hm.s.fActive; } /** * External interface for querying whether hardware accelerated raw mode is * enabled. * * @returns true if nested paging is being used, otherwise false. * @param pUVM The user mode VM handle. * @sa HMIsEnabled, HMIsEnabledNotMacro. */ VMMR3DECL(bool) HMR3IsEnabled(PUVM pUVM) { UVM_ASSERT_VALID_EXT_RETURN(pUVM, false); PVM pVM = pUVM->pVM; VM_ASSERT_VALID_EXT_RETURN(pVM, false); return pVM->fHMEnabled; /* Don't use the macro as the GUI may query us very very early. */ } /** * Checks if we are currently using nested paging. * * @returns true if nested paging is being used, otherwise false. * @param pUVM The user mode VM handle. */ VMMR3DECL(bool) HMR3IsNestedPagingActive(PUVM pUVM) { UVM_ASSERT_VALID_EXT_RETURN(pUVM, false); PVM pVM = pUVM->pVM; VM_ASSERT_VALID_EXT_RETURN(pVM, false); return pVM->hm.s.fNestedPaging; } /** * Checks if we are currently using VPID in VT-x mode. * * @returns true if VPID is being used, otherwise false. * @param pUVM The user mode VM handle. */ VMMR3DECL(bool) HMR3IsVpidActive(PUVM pUVM) { UVM_ASSERT_VALID_EXT_RETURN(pUVM, false); PVM pVM = pUVM->pVM; VM_ASSERT_VALID_EXT_RETURN(pVM, false); return pVM->hm.s.vmx.fVpid; } /** * Checks if we are currently using VT-x unrestricted execution, * aka UX. * * @returns true if UX is being used, otherwise false. * @param pUVM The user mode VM handle. */ VMMR3DECL(bool) HMR3IsUXActive(PUVM pUVM) { UVM_ASSERT_VALID_EXT_RETURN(pUVM, false); PVM pVM = pUVM->pVM; VM_ASSERT_VALID_EXT_RETURN(pVM, false); return pVM->hm.s.vmx.fUnrestrictedGuest; } /** * Checks if internal events are pending. In that case we are not allowed to dispatch interrupts. * * @returns true if an internal event is pending, otherwise false. * @param pVM Pointer to the VM. */ VMMR3_INT_DECL(bool) HMR3IsEventPending(PVMCPU pVCpu) { return HMIsEnabled(pVCpu->pVMR3) && pVCpu->hm.s.Event.fPending; } /** * Checks if the VMX-preemption timer is being used. * * @returns true if the VMX-preemption timer is being used, otherwise false. * @param pVM Pointer to the VM. */ VMMR3_INT_DECL(bool) HMR3IsVmxPreemptionTimerUsed(PVM pVM) { return HMIsEnabled(pVM) && pVM->hm.s.vmx.fEnabled && pVM->hm.s.vmx.fUsePreemptTimer; } /** * Restart an I/O instruction that was refused in ring-0 * * @returns Strict VBox status code. Informational status codes other than the one documented * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success. * @retval VINF_SUCCESS Success. * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the * status code must be passed on to EM. * @retval VERR_NOT_FOUND if no pending I/O instruction. * * @param pVM Pointer to the VM. * @param pVCpu Pointer to the VMCPU. * @param pCtx Pointer to the guest CPU context. */ VMMR3_INT_DECL(VBOXSTRICTRC) HMR3RestartPendingIOInstr(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx) { HMPENDINGIO enmType = pVCpu->hm.s.PendingIO.enmType; pVCpu->hm.s.PendingIO.enmType = HMPENDINGIO_INVALID; if ( pVCpu->hm.s.PendingIO.GCPtrRip != pCtx->rip || enmType == HMPENDINGIO_INVALID) return VERR_NOT_FOUND; VBOXSTRICTRC rcStrict; switch (enmType) { case HMPENDINGIO_PORT_READ: { uint32_t uAndVal = pVCpu->hm.s.PendingIO.s.Port.uAndVal; uint32_t u32Val = 0; rcStrict = IOMIOPortRead(pVM, pVCpu, pVCpu->hm.s.PendingIO.s.Port.uPort, &u32Val, pVCpu->hm.s.PendingIO.s.Port.cbSize); if (IOM_SUCCESS(rcStrict)) { /* Write back to the EAX register. */ pCtx->eax = (pCtx->eax & ~uAndVal) | (u32Val & uAndVal); pCtx->rip = pVCpu->hm.s.PendingIO.GCPtrRipNext; } break; } case HMPENDINGIO_PORT_WRITE: rcStrict = IOMIOPortWrite(pVM, pVCpu, pVCpu->hm.s.PendingIO.s.Port.uPort, pCtx->eax & pVCpu->hm.s.PendingIO.s.Port.uAndVal, pVCpu->hm.s.PendingIO.s.Port.cbSize); if (IOM_SUCCESS(rcStrict)) pCtx->rip = pVCpu->hm.s.PendingIO.GCPtrRipNext; break; default: AssertLogRelFailedReturn(VERR_HM_UNKNOWN_IO_INSTRUCTION); } return rcStrict; } /** * Check fatal VT-x/AMD-V error and produce some meaningful * log release message. * * @param pVM Pointer to the VM. * @param iStatusCode VBox status code. */ VMMR3_INT_DECL(void) HMR3CheckError(PVM pVM, int iStatusCode) { for (VMCPUID i = 0; i < pVM->cCpus; i++) { switch (iStatusCode) { case VERR_VMX_INVALID_VMCS_FIELD: break; case VERR_VMX_INVALID_VMCS_PTR: LogRel(("HM: VERR_VMX_INVALID_VMCS_PTR:\n")); LogRel(("HM: CPU%d Current pointer %RGp vs %RGp\n", i, pVM->aCpus[i].hm.s.vmx.lasterror.u64VMCSPhys, pVM->aCpus[i].hm.s.vmx.HCPhysVmcs)); LogRel(("HM: CPU%d Current VMCS version %x\n", i, pVM->aCpus[i].hm.s.vmx.lasterror.u32VMCSRevision)); LogRel(("HM: CPU%d Entered Cpu %d\n", i, pVM->aCpus[i].hm.s.vmx.lasterror.idEnteredCpu)); LogRel(("HM: CPU%d Current Cpu %d\n", i, pVM->aCpus[i].hm.s.vmx.lasterror.idCurrentCpu)); break; case VERR_VMX_UNABLE_TO_START_VM: LogRel(("HM: VERR_VMX_UNABLE_TO_START_VM:\n")); LogRel(("HM: CPU%d instruction error %#x\n", i, pVM->aCpus[i].hm.s.vmx.lasterror.u32InstrError)); LogRel(("HM: CPU%d exit reason %#x\n", i, pVM->aCpus[i].hm.s.vmx.lasterror.u32ExitReason)); if (pVM->aCpus[i].hm.s.vmx.lasterror.u32InstrError == VMX_ERROR_VMENTRY_INVALID_CONTROL_FIELDS) { LogRel(("HM: Cpu%d PinCtls %#RX32\n", i, pVM->aCpus[i].hm.s.vmx.u32PinCtls)); LogRel(("HM: Cpu%d ProcCtls %#RX32\n", i, pVM->aCpus[i].hm.s.vmx.u32ProcCtls)); LogRel(("HM: Cpu%d ProcCtls2 %#RX32\n", i, pVM->aCpus[i].hm.s.vmx.u32ProcCtls2)); LogRel(("HM: Cpu%d EntryCtls %#RX32\n", i, pVM->aCpus[i].hm.s.vmx.u32EntryCtls)); LogRel(("HM: Cpu%d ExitCtls %#RX32\n", i, pVM->aCpus[i].hm.s.vmx.u32ExitCtls)); LogRel(("HM: Cpu%d MSRBitmapPhys %#RHp\n", i, pVM->aCpus[i].hm.s.vmx.HCPhysMsrBitmap)); #ifdef VBOX_WITH_AUTO_MSR_LOAD_RESTORE LogRel(("HM: Cpu%d GuestMSRPhys %#RHp\n", i, pVM->aCpus[i].hm.s.vmx.HCPhysGuestMsr)); LogRel(("HM: Cpu%d HostMsrPhys %#RHp\n", i, pVM->aCpus[i].hm.s.vmx.HCPhysHostMsr)); LogRel(("HM: Cpu%d cGuestMSRs %u\n", i, pVM->aCpus[i].hm.s.vmx.cGuestMsrs)); #endif } /** @todo Log VM-entry event injection control fields * VMX_VMCS_CTRL_ENTRY_IRQ_INFO, VMX_VMCS_CTRL_ENTRY_EXCEPTION_ERRCODE * and VMX_VMCS_CTRL_ENTRY_INSTR_LENGTH from the VMCS. */ break; case VERR_VMX_INVALID_VMXON_PTR: break; } } if (iStatusCode == VERR_VMX_UNABLE_TO_START_VM) { LogRel(("VERR_VMX_UNABLE_TO_START_VM: VM-entry allowed %x\n", pVM->hm.s.vmx.msr.vmx_entry.n.allowed1)); LogRel(("VERR_VMX_UNABLE_TO_START_VM: VM-entry disallowed %x\n", pVM->hm.s.vmx.msr.vmx_entry.n.disallowed0)); } } /** * Execute state save operation. * * @returns VBox status code. * @param pVM Pointer to the VM. * @param pSSM SSM operation handle. */ static DECLCALLBACK(int) hmR3Save(PVM pVM, PSSMHANDLE pSSM) { int rc; Log(("hmR3Save:\n")); for (VMCPUID i = 0; i < pVM->cCpus; i++) { /* * Save the basic bits - fortunately all the other things can be resynced on load. */ rc = SSMR3PutU32(pSSM, pVM->aCpus[i].hm.s.Event.fPending); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pVM->aCpus[i].hm.s.Event.u32ErrCode); AssertRCReturn(rc, rc); rc = SSMR3PutU64(pSSM, pVM->aCpus[i].hm.s.Event.u64IntrInfo); AssertRCReturn(rc, rc); #ifdef VBOX_WITH_OLD_VTX_CODE rc = SSMR3PutU32(pSSM, pVM->aCpus[i].hm.s.vmx.enmLastSeenGuestMode); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pVM->aCpus[i].hm.s.vmx.enmCurrGuestMode); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pVM->aCpus[i].hm.s.vmx.enmPrevGuestMode); AssertRCReturn(rc, rc); #else //@todo: We only need to save pVM->aCpus[i].hm.s.vmx.fWasInRealMode and // perhaps not even that (the initial value of 'true' is safe). uint32_t u32Dummy = PGMMODE_REAL; rc = SSMR3PutU32(pSSM, u32Dummy); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, u32Dummy); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, u32Dummy); AssertRCReturn(rc, rc); #endif } #ifdef VBOX_HM_WITH_GUEST_PATCHING rc = SSMR3PutGCPtr(pSSM, pVM->hm.s.pGuestPatchMem); AssertRCReturn(rc, rc); rc = SSMR3PutGCPtr(pSSM, pVM->hm.s.pFreeGuestPatchMem); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pVM->hm.s.cbGuestPatchMem); AssertRCReturn(rc, rc); /* Store all the guest patch records too. */ rc = SSMR3PutU32(pSSM, pVM->hm.s.cPatches); AssertRCReturn(rc, rc); for (unsigned i = 0; i < pVM->hm.s.cPatches; i++) { PHMTPRPATCH pPatch = &pVM->hm.s.aPatches[i]; rc = SSMR3PutU32(pSSM, pPatch->Core.Key); AssertRCReturn(rc, rc); rc = SSMR3PutMem(pSSM, pPatch->aOpcode, sizeof(pPatch->aOpcode)); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pPatch->cbOp); AssertRCReturn(rc, rc); rc = SSMR3PutMem(pSSM, pPatch->aNewOpcode, sizeof(pPatch->aNewOpcode)); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pPatch->cbNewOp); AssertRCReturn(rc, rc); AssertCompileSize(HMTPRINSTR, 4); rc = SSMR3PutU32(pSSM, (uint32_t)pPatch->enmType); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pPatch->uSrcOperand); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pPatch->uDstOperand); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pPatch->pJumpTarget); AssertRCReturn(rc, rc); rc = SSMR3PutU32(pSSM, pPatch->cFaults); AssertRCReturn(rc, rc); } #endif return VINF_SUCCESS; } /** * Execute state load operation. * * @returns VBox status code. * @param pVM Pointer to the VM. * @param pSSM SSM operation handle. * @param uVersion Data layout version. * @param uPass The data pass. */ static DECLCALLBACK(int) hmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass) { int rc; Log(("hmR3Load:\n")); Assert(uPass == SSM_PASS_FINAL); NOREF(uPass); /* * Validate version. */ if ( uVersion != HM_SSM_VERSION && uVersion != HM_SSM_VERSION_NO_PATCHING && uVersion != HM_SSM_VERSION_2_0_X) { AssertMsgFailed(("hmR3Load: Invalid version uVersion=%d!\n", uVersion)); return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION; } for (VMCPUID i = 0; i < pVM->cCpus; i++) { rc = SSMR3GetU32(pSSM, &pVM->aCpus[i].hm.s.Event.fPending); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, &pVM->aCpus[i].hm.s.Event.u32ErrCode); AssertRCReturn(rc, rc); rc = SSMR3GetU64(pSSM, &pVM->aCpus[i].hm.s.Event.u64IntrInfo); AssertRCReturn(rc, rc); if (uVersion >= HM_SSM_VERSION_NO_PATCHING) { uint32_t val; #ifdef VBOX_WITH_OLD_VTX_CODE rc = SSMR3GetU32(pSSM, &val); AssertRCReturn(rc, rc); pVM->aCpus[i].hm.s.vmx.enmLastSeenGuestMode = (PGMMODE)val; rc = SSMR3GetU32(pSSM, &val); AssertRCReturn(rc, rc); pVM->aCpus[i].hm.s.vmx.enmCurrGuestMode = (PGMMODE)val; rc = SSMR3GetU32(pSSM, &val); AssertRCReturn(rc, rc); pVM->aCpus[i].hm.s.vmx.enmPrevGuestMode = (PGMMODE)val; #else //@todo: See note above re saving enmLastSeenGuestMode rc = SSMR3GetU32(pSSM, &val); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, &val); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, &val); AssertRCReturn(rc, rc); #endif } } #ifdef VBOX_HM_WITH_GUEST_PATCHING if (uVersion > HM_SSM_VERSION_NO_PATCHING) { rc = SSMR3GetGCPtr(pSSM, &pVM->hm.s.pGuestPatchMem); AssertRCReturn(rc, rc); rc = SSMR3GetGCPtr(pSSM, &pVM->hm.s.pFreeGuestPatchMem); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, &pVM->hm.s.cbGuestPatchMem); AssertRCReturn(rc, rc); /* Fetch all TPR patch records. */ rc = SSMR3GetU32(pSSM, &pVM->hm.s.cPatches); AssertRCReturn(rc, rc); for (unsigned i = 0; i < pVM->hm.s.cPatches; i++) { PHMTPRPATCH pPatch = &pVM->hm.s.aPatches[i]; rc = SSMR3GetU32(pSSM, &pPatch->Core.Key); AssertRCReturn(rc, rc); rc = SSMR3GetMem(pSSM, pPatch->aOpcode, sizeof(pPatch->aOpcode)); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, &pPatch->cbOp); AssertRCReturn(rc, rc); rc = SSMR3GetMem(pSSM, pPatch->aNewOpcode, sizeof(pPatch->aNewOpcode)); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, &pPatch->cbNewOp); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, (uint32_t *)&pPatch->enmType); AssertRCReturn(rc, rc); if (pPatch->enmType == HMTPRINSTR_JUMP_REPLACEMENT) pVM->hm.s.fTPRPatchingActive = true; Assert(pPatch->enmType == HMTPRINSTR_JUMP_REPLACEMENT || pVM->hm.s.fTPRPatchingActive == false); rc = SSMR3GetU32(pSSM, &pPatch->uSrcOperand); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, &pPatch->uDstOperand); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, &pPatch->cFaults); AssertRCReturn(rc, rc); rc = SSMR3GetU32(pSSM, &pPatch->pJumpTarget); AssertRCReturn(rc, rc); Log(("hmR3Load: patch %d\n", i)); Log(("Key = %x\n", pPatch->Core.Key)); Log(("cbOp = %d\n", pPatch->cbOp)); Log(("cbNewOp = %d\n", pPatch->cbNewOp)); Log(("type = %d\n", pPatch->enmType)); Log(("srcop = %d\n", pPatch->uSrcOperand)); Log(("dstop = %d\n", pPatch->uDstOperand)); Log(("cFaults = %d\n", pPatch->cFaults)); Log(("target = %x\n", pPatch->pJumpTarget)); rc = RTAvloU32Insert(&pVM->hm.s.PatchTree, &pPatch->Core); AssertRC(rc); } } #endif return VINF_SUCCESS; }