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Diffstat (limited to 'src/VBox/VMM/VMMR3/CPUMR3Db.cpp')
| -rw-r--r-- | src/VBox/VMM/VMMR3/CPUMR3Db.cpp | 780 |
1 files changed, 780 insertions, 0 deletions
diff --git a/src/VBox/VMM/VMMR3/CPUMR3Db.cpp b/src/VBox/VMM/VMMR3/CPUMR3Db.cpp new file mode 100644 index 00000000..26cfb857 --- /dev/null +++ b/src/VBox/VMM/VMMR3/CPUMR3Db.cpp @@ -0,0 +1,780 @@ +/* $Id: CPUMR3Db.cpp $ */ +/** @file + * CPUM - CPU database part. + */ + +/* + * Copyright (C) 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_CPUM +#include <VBox/vmm/cpum.h> +#include "CPUMInternal.h" +#include <VBox/vmm/vm.h> + +#include <VBox/err.h> +#include <iprt/asm-amd64-x86.h> +#include <iprt/mem.h> +#include <iprt/string.h> + + +/******************************************************************************* +* Structures and Typedefs * +*******************************************************************************/ +typedef struct CPUMDBENTRY +{ + /** The CPU name. */ + const char *pszName; + /** The full CPU name. */ + const char *pszFullName; + /** The CPU vendor (CPUMCPUVENDOR). */ + uint8_t enmVendor; + /** The CPU family. */ + uint8_t uFamily; + /** The CPU model. */ + uint8_t uModel; + /** The CPU stepping. */ + uint8_t uStepping; + /** The microarchitecture. */ + CPUMMICROARCH enmMicroarch; + /** Scalable bus frequency used for reporting other frequencies. */ + uint64_t uScalableBusFreq; + /** Flags (TBD). */ + uint32_t fFlags; + /** The maximum physical address with of the CPU. This should correspond to + * the value in CPUID leaf 0x80000008 when present. */ + uint8_t cMaxPhysAddrWidth; + /** Pointer to an array of CPUID leaves. */ + PCCPUMCPUIDLEAF paCpuIdLeaves; + /** The number of CPUID leaves in the array paCpuIdLeaves points to. */ + uint32_t cCpuIdLeaves; + /** The method used to deal with unknown CPUID leaves. */ + CPUMUKNOWNCPUID enmUnknownCpuId; + /** The default unknown CPUID value. */ + CPUMCPUID DefUnknownCpuId; + + /** MSR mask. Several microarchitectures ignore higher bits of the */ + uint32_t fMsrMask; + + /** The number of ranges in the table pointed to b paMsrRanges. */ + uint32_t cMsrRanges; + /** MSR ranges for this CPU. */ + PCCPUMMSRRANGE paMsrRanges; +} CPUMDBENTRY; + + +/******************************************************************************* +* Defined Constants And Macros * +*******************************************************************************/ + +/** @def NULL_ALONE + * For eliminating an unnecessary data dependency in standalone builds (for + * VBoxSVC). */ +/** @def ZERO_ALONE + * For eliminating an unnecessary data size dependency in standalone builds (for + * VBoxSVC). */ +#ifndef CPUM_DB_STANDALONE +# define NULL_ALONE(a_aTable) a_aTable +# define ZERO_ALONE(a_cTable) a_cTable +#else +# define NULL_ALONE(a_aTable) NULL +# define ZERO_ALONE(a_cTable) 0 +#endif + + +/** @name Short macros for the MSR range entries. + * + * These are rather cryptic, but this is to reduce the attack on the right + * margin. + * + * @{ */ +/** Alias one MSR onto another (a_uTarget). */ +#define MAL(a_uMsr, a_szName, a_uTarget) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_MsrAlias, kCpumMsrWrFn_MsrAlias, 0, a_uTarget, 0, 0, a_szName) +/** Functions handles everything. */ +#define MFN(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, 0, 0, 0, a_szName) +/** Functions handles everything, with GP mask. */ +#define MFG(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_fWrGpMask) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, 0, 0, a_fWrGpMask, a_szName) +/** Function handlers, read-only. */ +#define MFO(a_uMsr, a_szName, a_enmRdFnSuff) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_ReadOnly, 0, 0, 0, UINT64_MAX, a_szName) +/** Function handlers, ignore all writes. */ +#define MFI(a_uMsr, a_szName, a_enmRdFnSuff) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_IgnoreWrite, 0, 0, UINT64_MAX, 0, a_szName) +/** Function handlers, with value. */ +#define MFV(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_uValue) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, a_uValue, 0, 0, a_szName) +/** Function handlers, with write ignore mask. */ +#define MFW(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_fWrIgnMask) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, 0, a_fWrIgnMask, 0, a_szName) +/** Function handlers, extended version. */ +#define MFX(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_uValue, a_fWrIgnMask, a_fWrGpMask) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, a_uValue, a_fWrIgnMask, a_fWrGpMask, a_szName) +/** Function handlers, with CPUMCPU storage variable. */ +#define MFS(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_CpumCpuMember) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, \ + RT_OFFSETOF(CPUMCPU, a_CpumCpuMember), 0, 0, 0, a_szName) +/** Function handlers, with CPUMCPU storage variable, ignore mask and GP mask. */ +#define MFZ(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_CpumCpuMember, a_fWrIgnMask, a_fWrGpMask) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, \ + RT_OFFSETOF(CPUMCPU, a_CpumCpuMember), 0, a_fWrIgnMask, a_fWrGpMask, a_szName) +/** Read-only fixed value. */ +#define MVO(a_uMsr, a_szName, a_uValue) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_ReadOnly, 0, a_uValue, 0, UINT64_MAX, a_szName) +/** Read-only fixed value, ignores all writes. */ +#define MVI(a_uMsr, a_szName, a_uValue) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_IgnoreWrite, 0, a_uValue, UINT64_MAX, 0, a_szName) +/** Read fixed value, ignore writes outside GP mask. */ +#define MVG(a_uMsr, a_szName, a_uValue, a_fWrGpMask) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_IgnoreWrite, 0, a_uValue, 0, a_fWrGpMask, a_szName) +/** Read fixed value, extended version with both GP and ignore masks. */ +#define MVX(a_uMsr, a_szName, a_uValue, a_fWrIgnMask, a_fWrGpMask) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_IgnoreWrite, 0, a_uValue, a_fWrIgnMask, a_fWrGpMask, a_szName) +/** The short form, no CPUM backing. */ +#define MSN(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask) \ + RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, \ + a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName) + +/** Range: Functions handles everything. */ +#define RFN(a_uFirst, a_uLast, a_szName, a_enmRdFnSuff, a_enmWrFnSuff) \ + RINT(a_uFirst, a_uLast, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, 0, 0, 0, a_szName) +/** Range: Read fixed value, read-only. */ +#define RVO(a_uFirst, a_uLast, a_szName, a_uValue) \ + RINT(a_uFirst, a_uLast, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_ReadOnly, 0, a_uValue, 0, UINT64_MAX, a_szName) +/** Range: Read fixed value, ignore writes. */ +#define RVI(a_uFirst, a_uLast, a_szName, a_uValue) \ + RINT(a_uFirst, a_uLast, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_IgnoreWrite, 0, a_uValue, UINT64_MAX, 0, a_szName) +/** Range: The short form, no CPUM backing. */ +#define RSN(a_uFirst, a_uLast, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask) \ + RINT(a_uFirst, a_uLast, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, \ + a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName) + +/** Internal form used by the macros. */ +#ifdef VBOX_WITH_STATISTICS +# define RINT(a_uFirst, a_uLast, a_enmRdFn, a_enmWrFn, a_offCpumCpu, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName) \ + { a_uFirst, a_uLast, a_enmRdFn, a_enmWrFn, a_offCpumCpu, 0, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName, \ + { 0 }, { 0 }, { 0 }, { 0 } } +#else +# define RINT(a_uFirst, a_uLast, a_enmRdFn, a_enmWrFn, a_offCpumCpu, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName) \ + { a_uFirst, a_uLast, a_enmRdFn, a_enmWrFn, a_offCpumCpu, 0, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName } +#endif +/** @} */ + + +#include "cpus/Intel_Core_i7_3960X.h" +#include "cpus/Intel_Core_i5_3570.h" +#include "cpus/Intel_Core_i7_2635QM.h" +#include "cpus/Intel_Xeon_X5482_3_20GHz.h" +#include "cpus/Intel_Pentium_M_processor_2_00GHz.h" +#include "cpus/Intel_Pentium_4_3_00GHz.h" + +#include "cpus/AMD_FX_8150_Eight_Core.h" +#include "cpus/AMD_Phenom_II_X6_1100T.h" +#include "cpus/Quad_Core_AMD_Opteron_2384.h" +#include "cpus/AMD_Athlon_64_X2_Dual_Core_4200.h" +#include "cpus/AMD_Athlon_64_3200.h" + +#include "cpus/VIA_QuadCore_L4700_1_2_GHz.h" + + + +/** + * The database entries. + * + * 1. The first entry is special. It is the fallback for unknown + * processors. Thus, it better be pretty representative. + * + * 2. The first entry for a CPU vendor is likewise important as it is + * the default entry for that vendor. + * + * Generally we put the most recent CPUs first, since these tend to have the + * most complicated and backwards compatible list of MSRs. + */ +static CPUMDBENTRY const * const g_apCpumDbEntries[] = +{ +#ifdef VBOX_CPUDB_Intel_Core_i5_3570 + &g_Entry_Intel_Core_i5_3570, +#endif +#ifdef VBOX_CPUDB_Intel_Core_i7_3960X + &g_Entry_Intel_Core_i7_3960X, +#endif +#ifdef VBOX_CPUDB_Intel_Core_i7_2635QM + &g_Entry_Intel_Core_i7_2635QM, +#endif +#ifdef Intel_Pentium_M_processor_2_00GHz + &g_Entry_Intel_Pentium_M_processor_2_00GHz, +#endif +#ifdef VBOX_CPUDB_Intel_Xeon_X5482_3_20GHz + &g_Entry_Intel_Xeon_X5482_3_20GHz, +#endif +#ifdef VBOX_CPUDB_Intel_Pentium_4_3_00GHz + &g_Entry_Intel_Pentium_4_3_00GHz, +#endif + +#ifdef VBOX_CPUDB_AMD_FX_8150_Eight_Core + &g_Entry_AMD_FX_8150_Eight_Core, +#endif +#ifdef VBOX_CPUDB_AMD_Phenom_II_X6_1100T + &g_Entry_AMD_Phenom_II_X6_1100T, +#endif +#ifdef VBOX_CPUDB_Quad_Core_AMD_Opteron_2384 + &g_Entry_Quad_Core_AMD_Opteron_2384, +#endif +#ifdef VBOX_CPUDB_AMD_Athlon_64_X2_Dual_Core_4200 + &g_Entry_AMD_Athlon_64_X2_Dual_Core_4200, +#endif +#ifdef VBOX_CPUDB_AMD_Athlon_64_3200 + &g_Entry_AMD_Athlon_64_3200, +#endif + +#ifdef VBOX_CPUDB_VIA_QuadCore_L4700_1_2_GHz + &g_Entry_VIA_QuadCore_L4700_1_2_GHz, +#endif +}; + + +#ifndef CPUM_DB_STANDALONE + +/** + * Binary search used by cpumR3MsrRangesInsert and has some special properties + * wrt to mismatches. + * + * @returns Insert location. + * @param paMsrRanges The MSR ranges to search. + * @param cMsrRanges The number of MSR ranges. + * @param uMsr What to search for. + */ +static uint32_t cpumR3MsrRangesBinSearch(PCCPUMMSRRANGE paMsrRanges, uint32_t cMsrRanges, uint32_t uMsr) +{ + if (!cMsrRanges) + return 0; + + uint32_t iStart = 0; + uint32_t iLast = cMsrRanges - 1; + for (;;) + { + uint32_t i = iStart + (iLast - iStart + 1) / 2; + if ( uMsr >= paMsrRanges[i].uFirst + && uMsr <= paMsrRanges[i].uLast) + return i; + if (uMsr < paMsrRanges[i].uFirst) + { + if (i <= iStart) + return i; + iLast = i - 1; + } + else + { + if (i >= iLast) + { + if (i < cMsrRanges) + i++; + return i; + } + iStart = i + 1; + } + } +} + + +/** + * Ensures that there is space for at least @a cNewRanges in the table, + * reallocating the table if necessary. + * + * @returns Pointer to the MSR ranges on success, NULL on failure. On failure + * @a *ppaMsrRanges is freed and set to NULL. + * @param ppaMsrRanges The variable pointing to the ranges (input/output). + * @param cMsrRanges The current number of ranges. + * @param cNewRanges The number of ranges to be added. + */ +static PCPUMMSRRANGE cpumR3MsrRangesEnsureSpace(PCPUMMSRRANGE *ppaMsrRanges, uint32_t cMsrRanges, uint32_t cNewRanges) +{ + uint32_t cMsrRangesAllocated = RT_ALIGN_32(cMsrRanges, 16); + if (cMsrRangesAllocated < cMsrRanges + cNewRanges) + { + uint32_t cNew = RT_ALIGN_32(cMsrRanges + cNewRanges, 16); + void *pvNew = RTMemRealloc(*ppaMsrRanges, cNew * sizeof(**ppaMsrRanges)); + if (!pvNew) + { + RTMemFree(*ppaMsrRanges); + *ppaMsrRanges = NULL; + return NULL; + } + *ppaMsrRanges = (PCPUMMSRRANGE)pvNew; + } + return *ppaMsrRanges; +} + + +/** + * Inserts a new MSR range in into an sorted MSR range array. + * + * If the new MSR range overlaps existing ranges, the existing ones will be + * adjusted/removed to fit in the new one. + * + * @returns VBox status code. + * @retval VINF_SUCCESS + * @retval VERR_NO_MEMORY + * + * @param ppaMsrRanges The variable pointing to the ranges (input/output). + * @param pcMsrRanges The variable holding number of ranges. + * @param pNewRange The new range. + */ +int cpumR3MsrRangesInsert(PCPUMMSRRANGE *ppaMsrRanges, uint32_t *pcMsrRanges, PCCPUMMSRRANGE pNewRange) +{ + uint32_t cMsrRanges = *pcMsrRanges; + PCPUMMSRRANGE paMsrRanges = *ppaMsrRanges; + + Assert(pNewRange->uLast >= pNewRange->uFirst); + Assert(pNewRange->enmRdFn > kCpumMsrRdFn_Invalid && pNewRange->enmRdFn < kCpumMsrRdFn_End); + Assert(pNewRange->enmWrFn > kCpumMsrWrFn_Invalid && pNewRange->enmWrFn < kCpumMsrWrFn_End); + + /* + * Optimize the linear insertion case where we add new entries at the end. + */ + if ( cMsrRanges > 0 + && paMsrRanges[cMsrRanges - 1].uLast < pNewRange->uFirst) + { + paMsrRanges = cpumR3MsrRangesEnsureSpace(ppaMsrRanges, cMsrRanges, 1); + if (!paMsrRanges) + return VERR_NO_MEMORY; + paMsrRanges[cMsrRanges] = *pNewRange; + *pcMsrRanges += 1; + } + else + { + uint32_t i = cpumR3MsrRangesBinSearch(paMsrRanges, cMsrRanges, pNewRange->uFirst); + Assert(i == cMsrRanges || pNewRange->uFirst <= paMsrRanges[i].uLast); + Assert(i == 0 || pNewRange->uFirst > paMsrRanges[i - 1].uLast); + + /* + * Adding an entirely new entry? + */ + if ( i >= cMsrRanges + || pNewRange->uLast < paMsrRanges[i].uFirst) + { + paMsrRanges = cpumR3MsrRangesEnsureSpace(ppaMsrRanges, cMsrRanges, 1); + if (!paMsrRanges) + return VERR_NO_MEMORY; + if (i < cMsrRanges) + memmove(&paMsrRanges[i + 1], &paMsrRanges[i], (cMsrRanges - i) * sizeof(paMsrRanges[0])); + paMsrRanges[i] = *pNewRange; + *pcMsrRanges += 1; + } + /* + * Replace existing entry? + */ + else if ( pNewRange->uFirst == paMsrRanges[i].uFirst + && pNewRange->uLast == paMsrRanges[i].uLast) + paMsrRanges[i] = *pNewRange; + /* + * Splitting an existing entry? + */ + else if ( pNewRange->uFirst > paMsrRanges[i].uFirst + && pNewRange->uLast < paMsrRanges[i].uLast) + { + paMsrRanges = cpumR3MsrRangesEnsureSpace(ppaMsrRanges, cMsrRanges, 2); + if (!paMsrRanges) + return VERR_NO_MEMORY; + if (i < cMsrRanges) + memmove(&paMsrRanges[i + 2], &paMsrRanges[i], (cMsrRanges - i) * sizeof(paMsrRanges[0])); + paMsrRanges[i + 1] = *pNewRange; + paMsrRanges[i + 2] = paMsrRanges[i]; + paMsrRanges[i ].uLast = pNewRange->uFirst - 1; + paMsrRanges[i + 2].uFirst = pNewRange->uLast + 1; + *pcMsrRanges += 2; + } + /* + * Complicated scenarios that can affect more than one range. + * + * The current code does not optimize memmove calls when replacing + * one or more existing ranges, because it's tedious to deal with and + * not expected to be a frequent usage scenario. + */ + else + { + /* Adjust start of first match? */ + if ( pNewRange->uFirst <= paMsrRanges[i].uFirst + && pNewRange->uLast < paMsrRanges[i].uLast) + paMsrRanges[i].uFirst = pNewRange->uLast + 1; + else + { + /* Adjust end of first match? */ + if (pNewRange->uFirst > paMsrRanges[i].uFirst) + { + Assert(paMsrRanges[i].uLast >= pNewRange->uFirst); + paMsrRanges[i].uLast = pNewRange->uFirst - 1; + i++; + } + /* Replace the whole first match (lazy bird). */ + else + { + if (i + 1 < cMsrRanges) + memmove(&paMsrRanges[i], &paMsrRanges[i + 1], (cMsrRanges - i - 1) * sizeof(paMsrRanges[0])); + cMsrRanges = *pcMsrRanges -= 1; + } + + /* Do the new range affect more ranges? */ + while ( i < cMsrRanges + && pNewRange->uLast >= paMsrRanges[i].uFirst) + { + if (pNewRange->uLast < paMsrRanges[i].uLast) + { + /* Adjust the start of it, then we're done. */ + paMsrRanges[i].uFirst = pNewRange->uLast + 1; + break; + } + + /* Remove it entirely. */ + if (i + 1 < cMsrRanges) + memmove(&paMsrRanges[i], &paMsrRanges[i + 1], (cMsrRanges - i - 1) * sizeof(paMsrRanges[0])); + cMsrRanges = *pcMsrRanges -= 1; + } + } + + /* Now, perform a normal insertion. */ + paMsrRanges = cpumR3MsrRangesEnsureSpace(ppaMsrRanges, cMsrRanges, 1); + if (!paMsrRanges) + return VERR_NO_MEMORY; + if (i < cMsrRanges) + memmove(&paMsrRanges[i + 1], &paMsrRanges[i], (cMsrRanges - i) * sizeof(paMsrRanges[0])); + paMsrRanges[i] = *pNewRange; + *pcMsrRanges += 1; + } + } + + return VINF_SUCCESS; +} + + +/** + * Worker for cpumR3MsrApplyFudge that applies one table. + * + * @returns VBox status code. + * @param pVM Pointer to the cross context VM structure. + * @param paRanges Array of MSRs to fudge. + * @param cRanges Number of MSRs in the array. + */ +static int cpumR3MsrApplyFudgeTable(PVM pVM, PCCPUMMSRRANGE paRanges, size_t cRanges) +{ + for (uint32_t i = 0; i < cRanges; i++) + if (!cpumLookupMsrRange(pVM, paRanges[i].uFirst)) + { + LogRel(("CPUM: MSR fudge: %#010x %s\n", paRanges[i].uFirst, paRanges[i].szName)); + int rc = cpumR3MsrRangesInsert(&pVM->cpum.s.GuestInfo.paMsrRangesR3, &pVM->cpum.s.GuestInfo.cMsrRanges, + &paRanges[i]); + if (RT_FAILURE(rc)) + return rc; + } + return VINF_SUCCESS; +} + + +/** + * Fudges the MSRs that guest are known to access in some odd cases. + * + * A typical example is a VM that has been moved between different hosts where + * for instance the cpu vendor differs. + * + * @returns VBox status code. + * @param pVM Pointer to the cross context VM structure. + */ +int cpumR3MsrApplyFudge(PVM pVM) +{ + /* + * Basic. + */ + static CPUMMSRRANGE const s_aFudgeMsrs[] = + { + MFO(0x00000000, "IA32_P5_MC_ADDR", Ia32P5McAddr), + MFX(0x00000001, "IA32_P5_MC_TYPE", Ia32P5McType, Ia32P5McType, 0, 0, UINT64_MAX), + MVO(0x00000017, "IA32_PLATFORM_ID", 0), + MFN(0x0000001b, "IA32_APIC_BASE", Ia32ApicBase, Ia32ApicBase), + MVI(0x0000008b, "BIOS_SIGN", 0), + MFX(0x000000fe, "IA32_MTRRCAP", Ia32MtrrCap, ReadOnly, 0x508, 0, 0), + MFX(0x00000179, "IA32_MCG_CAP", Ia32McgCap, ReadOnly, 0x005, 0, 0), + MFX(0x0000017a, "IA32_MCG_STATUS", Ia32McgStatus, Ia32McgStatus, 0, ~(uint64_t)UINT32_MAX, 0), + MFN(0x000001a0, "IA32_MISC_ENABLE", Ia32MiscEnable, Ia32MiscEnable), + MFN(0x000001d9, "IA32_DEBUGCTL", Ia32DebugCtl, Ia32DebugCtl), + MFO(0x000001db, "P6_LAST_BRANCH_FROM_IP", P6LastBranchFromIp), + MFO(0x000001dc, "P6_LAST_BRANCH_TO_IP", P6LastBranchToIp), + MFO(0x000001dd, "P6_LAST_INT_FROM_IP", P6LastIntFromIp), + MFO(0x000001de, "P6_LAST_INT_TO_IP", P6LastIntToIp), + MFS(0x00000277, "IA32_PAT", Ia32Pat, Ia32Pat, Guest.msrPAT), + MFZ(0x000002ff, "IA32_MTRR_DEF_TYPE", Ia32MtrrDefType, Ia32MtrrDefType, GuestMsrs.msr.MtrrDefType, 0, ~(uint64_t)0xc07), + MFN(0x00000400, "IA32_MCi_CTL_STATUS_ADDR_MISC", Ia32McCtlStatusAddrMiscN, Ia32McCtlStatusAddrMiscN), + }; + int rc = cpumR3MsrApplyFudgeTable(pVM, &s_aFudgeMsrs[0], RT_ELEMENTS(s_aFudgeMsrs)); + AssertLogRelRCReturn(rc, rc); + + /* + * XP might mistake opterons and other newer CPUs for P4s. + */ + if (pVM->cpum.s.GuestFeatures.uFamily >= 0xf) + { + static CPUMMSRRANGE const s_aP4FudgeMsrs[] = + { + MFX(0x0000002c, "P4_EBC_FREQUENCY_ID", IntelP4EbcFrequencyId, IntelP4EbcFrequencyId, 0xf12010f, UINT64_MAX, 0), + }; + rc = cpumR3MsrApplyFudgeTable(pVM, &s_aP4FudgeMsrs[0], RT_ELEMENTS(s_aP4FudgeMsrs)); + AssertLogRelRCReturn(rc, rc); + } + + return rc; +} + + +int cpumR3DbGetCpuInfo(const char *pszName, PCPUMINFO pInfo) +{ + CPUMDBENTRY const *pEntry = NULL; + int rc; + + if (!strcmp(pszName, "host")) + { + /* + * Create a CPU database entry for the host CPU. This means getting + * the CPUID bits from the real CPU and grabbing the closest matching + * database entry for MSRs. + */ + rc = CPUMR3CpuIdDetectUnknownLeafMethod(&pInfo->enmUnknownCpuIdMethod, &pInfo->DefCpuId); + if (RT_FAILURE(rc)) + return rc; + rc = CPUMR3CpuIdCollectLeaves(&pInfo->paCpuIdLeavesR3, &pInfo->cCpuIdLeaves); + if (RT_FAILURE(rc)) + return rc; + + /* Lookup database entry for MSRs. */ + CPUMCPUVENDOR const enmVendor = CPUMR3CpuIdDetectVendorEx(pInfo->paCpuIdLeavesR3[0].uEax, + pInfo->paCpuIdLeavesR3[0].uEbx, + pInfo->paCpuIdLeavesR3[0].uEcx, + pInfo->paCpuIdLeavesR3[0].uEdx); + uint32_t const uStd1Eax = pInfo->paCpuIdLeavesR3[1].uEax; + uint8_t const uFamily = ASMGetCpuFamily(uStd1Eax); + uint8_t const uModel = ASMGetCpuModel(uStd1Eax, enmVendor == CPUMCPUVENDOR_INTEL); + uint8_t const uStepping = ASMGetCpuStepping(uStd1Eax); + CPUMMICROARCH const enmMicroarch = CPUMR3CpuIdDetermineMicroarchEx(enmVendor, uFamily, uModel, uStepping); + + for (unsigned i = 0; i < RT_ELEMENTS(g_apCpumDbEntries); i++) + { + CPUMDBENTRY const *pCur = g_apCpumDbEntries[i]; + if ((CPUMCPUVENDOR)pCur->enmVendor == enmVendor) + { + /* Match against Family, Microarch, model and stepping. Except + for family, always match the closer with preference given to + the later/older ones. */ + if (pCur->uFamily == uFamily) + { + if (pCur->enmMicroarch == enmMicroarch) + { + if (pCur->uModel == uModel) + { + if (pCur->uStepping == uStepping) + { + /* Perfect match. */ + pEntry = pCur; + break; + } + + if ( !pEntry + || pEntry->uModel != uModel + || pEntry->enmMicroarch != enmMicroarch + || pEntry->uFamily != uFamily) + pEntry = pCur; + else if ( pCur->uStepping >= uStepping + ? pCur->uStepping < pEntry->uStepping || pEntry->uStepping < uStepping + : pCur->uStepping > pEntry->uStepping) + pEntry = pCur; + } + else if ( !pEntry + || pEntry->enmMicroarch != enmMicroarch + || pEntry->uFamily != uFamily) + pEntry = pCur; + else if ( pCur->uModel >= uModel + ? pCur->uModel < pEntry->uModel || pEntry->uModel < uModel + : pCur->uModel > pEntry->uModel) + pEntry = pCur; + } + else if ( !pEntry + || pEntry->uFamily != uFamily) + pEntry = pCur; + else if ( pCur->enmMicroarch >= enmMicroarch + ? pCur->enmMicroarch < pEntry->enmMicroarch || pEntry->enmMicroarch < enmMicroarch + : pCur->enmMicroarch > pEntry->enmMicroarch) + pEntry = pCur; + } + /* We don't do closeness matching on family, we use the first + entry for the CPU vendor instead. (P4 workaround.) */ + else if (!pEntry) + pEntry = pCur; + } + } + + if (pEntry) + LogRel(("CPUM: Matched host CPU %s %#x/%#x/%#x %s with CPU DB entry '%s' (%s %#x/%#x/%#x %s).\n", + CPUMR3CpuVendorName(enmVendor), uFamily, uModel, uStepping, CPUMR3MicroarchName(enmMicroarch), + pEntry->pszName, CPUMR3CpuVendorName((CPUMCPUVENDOR)pEntry->enmVendor), pEntry->uFamily, pEntry->uModel, + pEntry->uStepping, CPUMR3MicroarchName(pEntry->enmMicroarch) )); + else + { + pEntry = g_apCpumDbEntries[0]; + LogRel(("CPUM: No matching processor database entry %s %#x/%#x/%#x %s, falling back on '%s'.\n", + CPUMR3CpuVendorName(enmVendor), uFamily, uModel, uStepping, CPUMR3MicroarchName(enmMicroarch), + pEntry->pszName)); + } + } + else + { + /* + * We're supposed to be emulating a specific CPU that is included in + * our CPU database. The CPUID tables needs to be copied onto the + * heap so the caller can modify them and so they can be freed like + * in the host case above. + */ + for (unsigned i = 0; i < RT_ELEMENTS(g_apCpumDbEntries); i++) + if (!strcmp(pszName, g_apCpumDbEntries[i]->pszName)) + { + pEntry = g_apCpumDbEntries[i]; + break; + } + if (!pEntry) + { + LogRel(("CPUM: Cannot locate any CPU by the name '%s'\n", pszName)); + return VERR_CPUM_DB_CPU_NOT_FOUND; + } + + pInfo->cCpuIdLeaves = pEntry->cCpuIdLeaves; + if (pEntry->cCpuIdLeaves) + { + pInfo->paCpuIdLeavesR3 = (PCPUMCPUIDLEAF)RTMemDup(pEntry->paCpuIdLeaves, + sizeof(pEntry->paCpuIdLeaves[0]) * pEntry->cCpuIdLeaves); + if (!pInfo->paCpuIdLeavesR3) + return VERR_NO_MEMORY; + } + else + pInfo->paCpuIdLeavesR3 = NULL; + + pInfo->enmUnknownCpuIdMethod = pEntry->enmUnknownCpuId; + pInfo->DefCpuId = pEntry->DefUnknownCpuId; + + LogRel(("CPUM: Using CPU DB entry '%s' (%s %#x/%#x/%#x %s).\n", + pEntry->pszName, CPUMR3CpuVendorName((CPUMCPUVENDOR)pEntry->enmVendor), + pEntry->uFamily, pEntry->uModel, pEntry->uStepping, CPUMR3MicroarchName(pEntry->enmMicroarch) )); + } + + pInfo->fMsrMask = pEntry->fMsrMask; + pInfo->iFirstExtCpuIdLeaf = 0; /* Set by caller. */ + pInfo->uPadding = 0; + pInfo->uScalableBusFreq = pEntry->uScalableBusFreq; + pInfo->paCpuIdLeavesR0 = NIL_RTR0PTR; + pInfo->paMsrRangesR0 = NIL_RTR0PTR; + pInfo->paCpuIdLeavesRC = NIL_RTRCPTR; + pInfo->paMsrRangesRC = NIL_RTRCPTR; + + /* + * Copy the MSR range. + */ + uint32_t cMsrs = 0; + PCPUMMSRRANGE paMsrs = NULL; + + PCCPUMMSRRANGE pCurMsr = pEntry->paMsrRanges; + uint32_t cLeft = pEntry->cMsrRanges; + while (cLeft-- > 0) + { + rc = cpumR3MsrRangesInsert(&paMsrs, &cMsrs, pCurMsr); + if (RT_FAILURE(rc)) + { + Assert(!paMsrs); /* The above function frees this. */ + RTMemFree(pInfo->paCpuIdLeavesR3); + pInfo->paCpuIdLeavesR3 = NULL; + return rc; + } + pCurMsr++; + } + + pInfo->paMsrRangesR3 = paMsrs; + pInfo->cMsrRanges = cMsrs; + return VINF_SUCCESS; +} + + +/** + * Register statistics for the MSRs. + * + * This must not be called before the MSRs have been finalized and moved to the + * hyper heap. + * + * @returns VBox status code. + * @param pVM Pointer to the cross context VM structure. + */ +int cpumR3MsrRegStats(PVM pVM) +{ + /* + * Global statistics. + */ + PCPUM pCpum = &pVM->cpum.s; + STAM_REL_REG(pVM, &pCpum->cMsrReads, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/Reads", + STAMUNIT_OCCURENCES, "All RDMSRs making it to CPUM."); + STAM_REL_REG(pVM, &pCpum->cMsrReadsRaiseGp, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/ReadsRaisingGP", + STAMUNIT_OCCURENCES, "RDMSR raising #GPs, except unknown MSRs."); + STAM_REL_REG(pVM, &pCpum->cMsrReadsUnknown, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/ReadsUnknown", + STAMUNIT_OCCURENCES, "RDMSR on unknown MSRs (raises #GP)."); + STAM_REL_REG(pVM, &pCpum->cMsrWrites, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/Writes", + STAMUNIT_OCCURENCES, "All RDMSRs making it to CPUM."); + STAM_REL_REG(pVM, &pCpum->cMsrWritesRaiseGp, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/WritesRaisingGP", + STAMUNIT_OCCURENCES, "WRMSR raising #GPs, except unknown MSRs."); + STAM_REL_REG(pVM, &pCpum->cMsrWritesToIgnoredBits, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/WritesToIgnoredBits", + STAMUNIT_OCCURENCES, "Writing of ignored bits."); + STAM_REL_REG(pVM, &pCpum->cMsrWritesUnknown, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/WritesUnknown", + STAMUNIT_OCCURENCES, "WRMSR on unknown MSRs (raises #GP)."); + + +# ifdef VBOX_WITH_STATISTICS + /* + * Per range. + */ + PCPUMMSRRANGE paRanges = pVM->cpum.s.GuestInfo.paMsrRangesR3; + uint32_t cRanges = pVM->cpum.s.GuestInfo.cMsrRanges; + for (uint32_t i = 0; i < cRanges; i++) + { + char szName[160]; + ssize_t cchName; + + if (paRanges[i].uFirst == paRanges[i].uLast) + cchName = RTStrPrintf(szName, sizeof(szName), "/CPUM/MSRs/%#010x-%s", + paRanges[i].uFirst, paRanges[i].szName); + else + cchName = RTStrPrintf(szName, sizeof(szName), "/CPUM/MSRs/%#010x-%#010x-%s", + paRanges[i].uFirst, paRanges[i].uLast, paRanges[i].szName); + + RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-reads"); + STAMR3Register(pVM, &paRanges[i].cReads, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, szName, STAMUNIT_OCCURENCES, "RDMSR"); + + RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-writes"); + STAMR3Register(pVM, &paRanges[i].cWrites, STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "WRMSR"); + + RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-GPs"); + STAMR3Register(pVM, &paRanges[i].cGps, STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "#GPs"); + + RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-ign-bits-writes"); + STAMR3Register(pVM, &paRanges[i].cIgnoredBits, STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "WRMSR w/ ignored bits"); + } +# endif /* VBOX_WITH_STATISTICS */ + + return VINF_SUCCESS; +} + +#endif /* !CPUM_DB_STANDALONE */ + |