| /* |
| * i386 CPUID helper functions |
| * |
| * Copyright (c) 2003 Fabrice Bellard |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <inttypes.h> |
| |
| #include "cpu.h" |
| #include "kvm.h" |
| |
| #include "qemu-option.h" |
| #include "qemu-config.h" |
| |
| /* feature flags taken from "Intel Processor Identification and the CPUID |
| * Instruction" and AMD's "CPUID Specification". In cases of disagreement |
| * between feature naming conventions, aliases may be added. |
| */ |
| static const char *feature_name[] = { |
| "fpu", "vme", "de", "pse", |
| "tsc", "msr", "pae", "mce", |
| "cx8", "apic", NULL, "sep", |
| "mtrr", "pge", "mca", "cmov", |
| "pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */, |
| NULL, "ds" /* Intel dts */, "acpi", "mmx", |
| "fxsr", "sse", "sse2", "ss", |
| "ht" /* Intel htt */, "tm", "ia64", "pbe", |
| }; |
| static const char *ext_feature_name[] = { |
| "pni|sse3" /* Intel,AMD sse3 */, "pclmuldq", "dtes64", "monitor", |
| "ds_cpl", "vmx", "smx", "est", |
| "tm2", "ssse3", "cid", NULL, |
| "fma", "cx16", "xtpr", "pdcm", |
| NULL, NULL, "dca", "sse4.1|sse4_1", |
| "sse4.2|sse4_2", "x2apic", "movbe", "popcnt", |
| NULL, "aes", "xsave", "osxsave", |
| "avx", NULL, NULL, "hypervisor", |
| }; |
| static const char *ext2_feature_name[] = { |
| "fpu", "vme", "de", "pse", |
| "tsc", "msr", "pae", "mce", |
| "cx8" /* AMD CMPXCHG8B */, "apic", NULL, "syscall", |
| "mtrr", "pge", "mca", "cmov", |
| "pat", "pse36", NULL, NULL /* Linux mp */, |
| "nx" /* Intel xd */, NULL, "mmxext", "mmx", |
| "fxsr", "fxsr_opt" /* AMD ffxsr */, "pdpe1gb" /* AMD Page1GB */, "rdtscp", |
| NULL, "lm" /* Intel 64 */, "3dnowext", "3dnow", |
| }; |
| static const char *ext3_feature_name[] = { |
| "lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */, |
| "cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse", |
| "3dnowprefetch", "osvw", "ibs", "xop", |
| "skinit", "wdt", NULL, NULL, |
| "fma4", NULL, "cvt16", "nodeid_msr", |
| NULL, NULL, NULL, NULL, |
| NULL, NULL, NULL, NULL, |
| NULL, NULL, NULL, NULL, |
| }; |
| |
| static const char *kvm_feature_name[] = { |
| "kvmclock", "kvm_nopiodelay", "kvm_mmu", NULL, NULL, NULL, NULL, NULL, |
| NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
| NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
| NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
| }; |
| |
| /* collects per-function cpuid data |
| */ |
| typedef struct model_features_t { |
| uint32_t *guest_feat; |
| uint32_t *host_feat; |
| uint32_t check_feat; |
| const char **flag_names; |
| uint32_t cpuid; |
| } model_features_t; |
| |
| int check_cpuid = 0; |
| int enforce_cpuid = 0; |
| |
| static void host_cpuid(uint32_t function, uint32_t count, |
| uint32_t *eax, uint32_t *ebx, |
| uint32_t *ecx, uint32_t *edx) |
| { |
| #if defined(CONFIG_KVM) |
| uint32_t vec[4]; |
| |
| #ifdef __x86_64__ |
| asm volatile("cpuid" |
| : "=a"(vec[0]), "=b"(vec[1]), |
| "=c"(vec[2]), "=d"(vec[3]) |
| : "0"(function), "c"(count) : "cc"); |
| #else |
| asm volatile("pusha \n\t" |
| "cpuid \n\t" |
| "mov %%eax, 0(%2) \n\t" |
| "mov %%ebx, 4(%2) \n\t" |
| "mov %%ecx, 8(%2) \n\t" |
| "mov %%edx, 12(%2) \n\t" |
| "popa" |
| : : "a"(function), "c"(count), "S"(vec) |
| : "memory", "cc"); |
| #endif |
| |
| if (eax) |
| *eax = vec[0]; |
| if (ebx) |
| *ebx = vec[1]; |
| if (ecx) |
| *ecx = vec[2]; |
| if (edx) |
| *edx = vec[3]; |
| #endif |
| } |
| |
| #define iswhite(c) ((c) && ((c) <= ' ' || '~' < (c))) |
| |
| /* general substring compare of *[s1..e1) and *[s2..e2). sx is start of |
| * a substring. ex if !NULL points to the first char after a substring, |
| * otherwise the string is assumed to sized by a terminating nul. |
| * Return lexical ordering of *s1:*s2. |
| */ |
| static int sstrcmp(const char *s1, const char *e1, const char *s2, |
| const char *e2) |
| { |
| for (;;) { |
| if (!*s1 || !*s2 || *s1 != *s2) |
| return (*s1 - *s2); |
| ++s1, ++s2; |
| if (s1 == e1 && s2 == e2) |
| return (0); |
| else if (s1 == e1) |
| return (*s2); |
| else if (s2 == e2) |
| return (*s1); |
| } |
| } |
| |
| /* compare *[s..e) to *altstr. *altstr may be a simple string or multiple |
| * '|' delimited (possibly empty) strings in which case search for a match |
| * within the alternatives proceeds left to right. Return 0 for success, |
| * non-zero otherwise. |
| */ |
| static int altcmp(const char *s, const char *e, const char *altstr) |
| { |
| const char *p, *q; |
| |
| for (q = p = altstr; ; ) { |
| while (*p && *p != '|') |
| ++p; |
| if ((q == p && !*s) || (q != p && !sstrcmp(s, e, q, p))) |
| return (0); |
| if (!*p) |
| return (1); |
| else |
| q = ++p; |
| } |
| } |
| |
| /* search featureset for flag *[s..e), if found set corresponding bit in |
| * *pval and return success, otherwise return zero |
| */ |
| static int lookup_feature(uint32_t *pval, const char *s, const char *e, |
| const char **featureset) |
| { |
| uint32_t mask; |
| const char **ppc; |
| |
| for (mask = 1, ppc = featureset; mask; mask <<= 1, ++ppc) |
| if (*ppc && !altcmp(s, e, *ppc)) { |
| *pval |= mask; |
| break; |
| } |
| return (mask ? 1 : 0); |
| } |
| |
| static void add_flagname_to_bitmaps(const char *flagname, uint32_t *features, |
| uint32_t *ext_features, |
| uint32_t *ext2_features, |
| uint32_t *ext3_features, |
| uint32_t *kvm_features) |
| { |
| if (!lookup_feature(features, flagname, NULL, feature_name) && |
| !lookup_feature(ext_features, flagname, NULL, ext_feature_name) && |
| !lookup_feature(ext2_features, flagname, NULL, ext2_feature_name) && |
| !lookup_feature(ext3_features, flagname, NULL, ext3_feature_name) && |
| !lookup_feature(kvm_features, flagname, NULL, kvm_feature_name)) |
| fprintf(stderr, "CPU feature %s not found\n", flagname); |
| } |
| |
| typedef struct x86_def_t { |
| struct x86_def_t *next; |
| const char *name; |
| uint32_t level; |
| uint32_t vendor1, vendor2, vendor3; |
| int family; |
| int model; |
| int stepping; |
| uint32_t features, ext_features, ext2_features, ext3_features, kvm_features; |
| uint32_t xlevel; |
| char model_id[48]; |
| int vendor_override; |
| uint32_t flags; |
| } x86_def_t; |
| |
| #define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE) |
| #define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \ |
| CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX | CPUID_APIC) |
| #define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \ |
| CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \ |
| CPUID_PSE36 | CPUID_FXSR) |
| #define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE) |
| #define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \ |
| CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \ |
| CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \ |
| CPUID_PAE | CPUID_SEP | CPUID_APIC) |
| #define EXT2_FEATURE_MASK 0x0183F3FF |
| |
| #define TCG_FEATURES (CPUID_FP87 | CPUID_PSE | CPUID_TSC | CPUID_MSR | \ |
| CPUID_PAE | CPUID_MCE | CPUID_CX8 | CPUID_APIC | CPUID_SEP | \ |
| CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \ |
| CPUID_PSE36 | CPUID_CLFLUSH | CPUID_ACPI | CPUID_MMX | \ |
| CPUID_FXSR | CPUID_SSE | CPUID_SSE2 | CPUID_SS) |
| /* partly implemented: |
| CPUID_MTRR, CPUID_MCA, CPUID_CLFLUSH (needed for Win64) |
| CPUID_PSE36 (needed for Solaris) */ |
| /* missing: |
| CPUID_VME, CPUID_DTS, CPUID_SS, CPUID_HT, CPUID_TM, CPUID_PBE */ |
| #define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | \ |
| CPUID_EXT_CX16 | CPUID_EXT_POPCNT | \ |
| CPUID_EXT_HYPERVISOR) |
| /* missing: |
| CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_EST, |
| CPUID_EXT_TM2, CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_XSAVE */ |
| #define TCG_EXT2_FEATURES ((TCG_FEATURES & EXT2_FEATURE_MASK) | \ |
| CPUID_EXT2_NX | CPUID_EXT2_MMXEXT | CPUID_EXT2_RDTSCP | \ |
| CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT) |
| /* missing: |
| CPUID_EXT2_PDPE1GB */ |
| #define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \ |
| CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A) |
| |
| /* maintains list of cpu model definitions |
| */ |
| static x86_def_t *x86_defs = {NULL}; |
| |
| /* built-in cpu model definitions (deprecated) |
| */ |
| static x86_def_t builtin_x86_defs[] = { |
| { |
| .name = "qemu64", |
| .level = 4, |
| .vendor1 = CPUID_VENDOR_AMD_1, |
| .vendor2 = CPUID_VENDOR_AMD_2, |
| .vendor3 = CPUID_VENDOR_AMD_3, |
| .family = 6, |
| .model = 2, |
| .stepping = 3, |
| .features = PPRO_FEATURES | |
| CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
| CPUID_PSE36, |
| .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16 | CPUID_EXT_POPCNT, |
| .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | |
| CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, |
| .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | |
| CPUID_EXT3_ABM | CPUID_EXT3_SSE4A, |
| .xlevel = 0x8000000A, |
| .model_id = "QEMU Virtual CPU version " QEMU_VERSION, |
| }, |
| { |
| .name = "phenom", |
| .level = 5, |
| .vendor1 = CPUID_VENDOR_AMD_1, |
| .vendor2 = CPUID_VENDOR_AMD_2, |
| .vendor3 = CPUID_VENDOR_AMD_3, |
| .family = 16, |
| .model = 2, |
| .stepping = 3, |
| .features = PPRO_FEATURES | |
| CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
| CPUID_PSE36 | CPUID_VME | CPUID_HT, |
| .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_CX16 | |
| CPUID_EXT_POPCNT, |
| .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | |
| CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX | |
| CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_MMXEXT | |
| CPUID_EXT2_FFXSR | CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP, |
| /* Missing: CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC, |
| CPUID_EXT3_CR8LEG, |
| CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH, |
| CPUID_EXT3_OSVW, CPUID_EXT3_IBS */ |
| .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | |
| CPUID_EXT3_ABM | CPUID_EXT3_SSE4A, |
| .xlevel = 0x8000001A, |
| .model_id = "AMD Phenom(tm) 9550 Quad-Core Processor" |
| }, |
| { |
| .name = "core2duo", |
| .level = 10, |
| .family = 6, |
| .model = 15, |
| .stepping = 11, |
| .features = PPRO_FEATURES | |
| CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
| CPUID_PSE36 | CPUID_VME | CPUID_DTS | CPUID_ACPI | CPUID_SS | |
| CPUID_HT | CPUID_TM | CPUID_PBE, |
| .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 | |
| CPUID_EXT_DTES64 | CPUID_EXT_DSCPL | CPUID_EXT_VMX | CPUID_EXT_EST | |
| CPUID_EXT_TM2 | CPUID_EXT_CX16 | CPUID_EXT_XTPR | CPUID_EXT_PDCM, |
| .ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, |
| .ext3_features = CPUID_EXT3_LAHF_LM, |
| .xlevel = 0x80000008, |
| .model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz", |
| }, |
| { |
| .name = "kvm64", |
| .level = 5, |
| .vendor1 = CPUID_VENDOR_INTEL_1, |
| .vendor2 = CPUID_VENDOR_INTEL_2, |
| .vendor3 = CPUID_VENDOR_INTEL_3, |
| .family = 15, |
| .model = 6, |
| .stepping = 1, |
| /* Missing: CPUID_VME, CPUID_HT */ |
| .features = PPRO_FEATURES | |
| CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
| CPUID_PSE36, |
| /* Missing: CPUID_EXT_POPCNT, CPUID_EXT_MONITOR */ |
| .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16, |
| /* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */ |
| .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | |
| CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, |
| /* Missing: CPUID_EXT3_LAHF_LM, CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC, |
| CPUID_EXT3_CR8LEG, CPUID_EXT3_ABM, CPUID_EXT3_SSE4A, |
| CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH, |
| CPUID_EXT3_OSVW, CPUID_EXT3_IBS, CPUID_EXT3_SVM */ |
| .ext3_features = 0, |
| .xlevel = 0x80000008, |
| .model_id = "Common KVM processor" |
| }, |
| { |
| .name = "qemu32", |
| .level = 4, |
| .family = 6, |
| .model = 3, |
| .stepping = 3, |
| .features = PPRO_FEATURES, |
| .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_POPCNT, |
| .xlevel = 0x80000004, |
| .model_id = "QEMU Virtual CPU version " QEMU_VERSION, |
| }, |
| { |
| .name = "kvm32", |
| .level = 5, |
| .family = 15, |
| .model = 6, |
| .stepping = 1, |
| .features = PPRO_FEATURES | |
| CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_PSE36, |
| .ext_features = CPUID_EXT_SSE3, |
| .ext2_features = PPRO_FEATURES & EXT2_FEATURE_MASK, |
| .ext3_features = 0, |
| .xlevel = 0x80000008, |
| .model_id = "Common 32-bit KVM processor" |
| }, |
| { |
| .name = "coreduo", |
| .level = 10, |
| .family = 6, |
| .model = 14, |
| .stepping = 8, |
| .features = PPRO_FEATURES | CPUID_VME | |
| CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_DTS | CPUID_ACPI | |
| CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE, |
| .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_VMX | |
| CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR | CPUID_EXT_PDCM, |
| .ext2_features = CPUID_EXT2_NX, |
| .xlevel = 0x80000008, |
| .model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz", |
| }, |
| { |
| .name = "486", |
| .level = 1, |
| .family = 4, |
| .model = 0, |
| .stepping = 0, |
| .features = I486_FEATURES, |
| .xlevel = 0, |
| }, |
| { |
| .name = "pentium", |
| .level = 1, |
| .family = 5, |
| .model = 4, |
| .stepping = 3, |
| .features = PENTIUM_FEATURES, |
| .xlevel = 0, |
| }, |
| { |
| .name = "pentium2", |
| .level = 2, |
| .family = 6, |
| .model = 5, |
| .stepping = 2, |
| .features = PENTIUM2_FEATURES, |
| .xlevel = 0, |
| }, |
| { |
| .name = "pentium3", |
| .level = 2, |
| .family = 6, |
| .model = 7, |
| .stepping = 3, |
| .features = PENTIUM3_FEATURES, |
| .xlevel = 0, |
| }, |
| { |
| .name = "athlon", |
| .level = 2, |
| .vendor1 = CPUID_VENDOR_AMD_1, |
| .vendor2 = CPUID_VENDOR_AMD_2, |
| .vendor3 = CPUID_VENDOR_AMD_3, |
| .family = 6, |
| .model = 2, |
| .stepping = 3, |
| .features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR | CPUID_MCA, |
| .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT, |
| .xlevel = 0x80000008, |
| /* XXX: put another string ? */ |
| .model_id = "QEMU Virtual CPU version " QEMU_VERSION, |
| }, |
| { |
| .name = "n270", |
| /* original is on level 10 */ |
| .level = 5, |
| .family = 6, |
| .model = 28, |
| .stepping = 2, |
| .features = PPRO_FEATURES | |
| CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME | CPUID_DTS | |
| CPUID_ACPI | CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE, |
| /* Some CPUs got no CPUID_SEP */ |
| .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 | |
| CPUID_EXT_DSCPL | CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR, |
| .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_NX, |
| .ext3_features = CPUID_EXT3_LAHF_LM, |
| .xlevel = 0x8000000A, |
| .model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz", |
| }, |
| }; |
| |
| static int cpu_x86_fill_model_id(char *str) |
| { |
| uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; |
| int i; |
| |
| for (i = 0; i < 3; i++) { |
| host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx); |
| memcpy(str + i * 16 + 0, &eax, 4); |
| memcpy(str + i * 16 + 4, &ebx, 4); |
| memcpy(str + i * 16 + 8, &ecx, 4); |
| memcpy(str + i * 16 + 12, &edx, 4); |
| } |
| return 0; |
| } |
| |
| static int cpu_x86_fill_host(x86_def_t *x86_cpu_def) |
| { |
| uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; |
| |
| x86_cpu_def->name = "host"; |
| host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx); |
| x86_cpu_def->level = eax; |
| x86_cpu_def->vendor1 = ebx; |
| x86_cpu_def->vendor2 = edx; |
| x86_cpu_def->vendor3 = ecx; |
| |
| host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx); |
| x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF); |
| x86_cpu_def->model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12); |
| x86_cpu_def->stepping = eax & 0x0F; |
| x86_cpu_def->ext_features = ecx; |
| x86_cpu_def->features = edx; |
| |
| host_cpuid(0x80000000, 0, &eax, &ebx, &ecx, &edx); |
| x86_cpu_def->xlevel = eax; |
| |
| host_cpuid(0x80000001, 0, &eax, &ebx, &ecx, &edx); |
| x86_cpu_def->ext2_features = edx; |
| x86_cpu_def->ext3_features = ecx; |
| cpu_x86_fill_model_id(x86_cpu_def->model_id); |
| x86_cpu_def->vendor_override = 0; |
| |
| return 0; |
| } |
| |
| static int unavailable_host_feature(struct model_features_t *f, uint32_t mask) |
| { |
| int i; |
| |
| for (i = 0; i < 32; ++i) |
| if (1 << i & mask) { |
| fprintf(stderr, "warning: host cpuid %04x_%04x lacks requested" |
| " flag '%s' [0x%08x]\n", |
| f->cpuid >> 16, f->cpuid & 0xffff, |
| f->flag_names[i] ? f->flag_names[i] : "[reserved]", mask); |
| break; |
| } |
| return 0; |
| } |
| |
| /* best effort attempt to inform user requested cpu flags aren't making |
| * their way to the guest. Note: ft[].check_feat ideally should be |
| * specified via a guest_def field to suppress report of extraneous flags. |
| */ |
| static int check_features_against_host(x86_def_t *guest_def) |
| { |
| x86_def_t host_def; |
| uint32_t mask; |
| int rv, i; |
| struct model_features_t ft[] = { |
| {&guest_def->features, &host_def.features, |
| ~0, feature_name, 0x00000000}, |
| {&guest_def->ext_features, &host_def.ext_features, |
| ~CPUID_EXT_HYPERVISOR, ext_feature_name, 0x00000001}, |
| {&guest_def->ext2_features, &host_def.ext2_features, |
| ~PPRO_FEATURES, ext2_feature_name, 0x80000000}, |
| {&guest_def->ext3_features, &host_def.ext3_features, |
| ~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001}}; |
| |
| cpu_x86_fill_host(&host_def); |
| for (rv = 0, i = 0; i < ARRAY_SIZE(ft); ++i) |
| for (mask = 1; mask; mask <<= 1) |
| if (ft[i].check_feat & mask && *ft[i].guest_feat & mask && |
| !(*ft[i].host_feat & mask)) { |
| unavailable_host_feature(&ft[i], mask); |
| rv = 1; |
| } |
| return rv; |
| } |
| |
| static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model) |
| { |
| unsigned int i; |
| x86_def_t *def; |
| |
| char *s = strdup(cpu_model); |
| char *featurestr, *name = strtok(s, ","); |
| uint32_t plus_features = 0, plus_ext_features = 0, plus_ext2_features = 0, plus_ext3_features = 0, plus_kvm_features = 0; |
| uint32_t minus_features = 0, minus_ext_features = 0, minus_ext2_features = 0, minus_ext3_features = 0, minus_kvm_features = 0; |
| uint32_t numvalue; |
| |
| for (def = x86_defs; def; def = def->next) |
| if (!strcmp(name, def->name)) |
| break; |
| if (kvm_enabled() && strcmp(name, "host") == 0) { |
| cpu_x86_fill_host(x86_cpu_def); |
| } else if (!def) { |
| goto error; |
| } else { |
| memcpy(x86_cpu_def, def, sizeof(*def)); |
| } |
| |
| plus_kvm_features = ~0; /* not supported bits will be filtered out later */ |
| |
| add_flagname_to_bitmaps("hypervisor", &plus_features, |
| &plus_ext_features, &plus_ext2_features, &plus_ext3_features, |
| &plus_kvm_features); |
| |
| featurestr = strtok(NULL, ","); |
| |
| while (featurestr) { |
| char *val; |
| if (featurestr[0] == '+') { |
| add_flagname_to_bitmaps(featurestr + 1, &plus_features, &plus_ext_features, &plus_ext2_features, &plus_ext3_features, &plus_kvm_features); |
| } else if (featurestr[0] == '-') { |
| add_flagname_to_bitmaps(featurestr + 1, &minus_features, &minus_ext_features, &minus_ext2_features, &minus_ext3_features, &minus_kvm_features); |
| } else if ((val = strchr(featurestr, '='))) { |
| *val = 0; val++; |
| if (!strcmp(featurestr, "family")) { |
| char *err; |
| numvalue = strtoul(val, &err, 0); |
| if (!*val || *err) { |
| fprintf(stderr, "bad numerical value %s\n", val); |
| goto error; |
| } |
| x86_cpu_def->family = numvalue; |
| } else if (!strcmp(featurestr, "model")) { |
| char *err; |
| numvalue = strtoul(val, &err, 0); |
| if (!*val || *err || numvalue > 0xff) { |
| fprintf(stderr, "bad numerical value %s\n", val); |
| goto error; |
| } |
| x86_cpu_def->model = numvalue; |
| } else if (!strcmp(featurestr, "stepping")) { |
| char *err; |
| numvalue = strtoul(val, &err, 0); |
| if (!*val || *err || numvalue > 0xf) { |
| fprintf(stderr, "bad numerical value %s\n", val); |
| goto error; |
| } |
| x86_cpu_def->stepping = numvalue ; |
| } else if (!strcmp(featurestr, "level")) { |
| char *err; |
| numvalue = strtoul(val, &err, 0); |
| if (!*val || *err) { |
| fprintf(stderr, "bad numerical value %s\n", val); |
| goto error; |
| } |
| x86_cpu_def->level = numvalue; |
| } else if (!strcmp(featurestr, "xlevel")) { |
| char *err; |
| numvalue = strtoul(val, &err, 0); |
| if (!*val || *err) { |
| fprintf(stderr, "bad numerical value %s\n", val); |
| goto error; |
| } |
| if (numvalue < 0x80000000) { |
| numvalue += 0x80000000; |
| } |
| x86_cpu_def->xlevel = numvalue; |
| } else if (!strcmp(featurestr, "vendor")) { |
| if (strlen(val) != 12) { |
| fprintf(stderr, "vendor string must be 12 chars long\n"); |
| goto error; |
| } |
| x86_cpu_def->vendor1 = 0; |
| x86_cpu_def->vendor2 = 0; |
| x86_cpu_def->vendor3 = 0; |
| for(i = 0; i < 4; i++) { |
| x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i); |
| x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i); |
| x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i); |
| } |
| x86_cpu_def->vendor_override = 1; |
| } else if (!strcmp(featurestr, "model_id")) { |
| pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id), |
| val); |
| } else { |
| fprintf(stderr, "unrecognized feature %s\n", featurestr); |
| goto error; |
| } |
| } else if (!strcmp(featurestr, "check")) { |
| check_cpuid = 1; |
| } else if (!strcmp(featurestr, "enforce")) { |
| check_cpuid = enforce_cpuid = 1; |
| } else { |
| fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr); |
| goto error; |
| } |
| featurestr = strtok(NULL, ","); |
| } |
| x86_cpu_def->features |= plus_features; |
| x86_cpu_def->ext_features |= plus_ext_features; |
| x86_cpu_def->ext2_features |= plus_ext2_features; |
| x86_cpu_def->ext3_features |= plus_ext3_features; |
| x86_cpu_def->kvm_features |= plus_kvm_features; |
| x86_cpu_def->features &= ~minus_features; |
| x86_cpu_def->ext_features &= ~minus_ext_features; |
| x86_cpu_def->ext2_features &= ~minus_ext2_features; |
| x86_cpu_def->ext3_features &= ~minus_ext3_features; |
| x86_cpu_def->kvm_features &= ~minus_kvm_features; |
| if (check_cpuid) { |
| if (check_features_against_host(x86_cpu_def) && enforce_cpuid) |
| goto error; |
| } |
| free(s); |
| return 0; |
| |
| error: |
| free(s); |
| return -1; |
| } |
| |
| /* generate a composite string into buf of all cpuid names in featureset |
| * selected by fbits. indicate truncation at bufsize in the event of overflow. |
| * if flags, suppress names undefined in featureset. |
| */ |
| static void listflags(char *buf, int bufsize, uint32_t fbits, |
| const char **featureset, uint32_t flags) |
| { |
| const char **p = &featureset[31]; |
| char *q, *b, bit; |
| int nc; |
| |
| b = 4 <= bufsize ? buf + (bufsize -= 3) - 1 : NULL; |
| *buf = '\0'; |
| for (q = buf, bit = 31; fbits && bufsize; --p, fbits &= ~(1 << bit), --bit) |
| if (fbits & 1 << bit && (*p || !flags)) { |
| if (*p) |
| nc = snprintf(q, bufsize, "%s%s", q == buf ? "" : " ", *p); |
| else |
| nc = snprintf(q, bufsize, "%s[%d]", q == buf ? "" : " ", bit); |
| if (bufsize <= nc) { |
| if (b) { |
| memcpy(b, "...", sizeof("...")); |
| } |
| return; |
| } |
| q += nc; |
| bufsize -= nc; |
| } |
| } |
| |
| /* generate CPU information: |
| * -? list model names |
| * -?model list model names/IDs |
| * -?dump output all model (x86_def_t) data |
| * -?cpuid list all recognized cpuid flag names |
| */ |
| void x86_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
| const char *optarg) |
| { |
| unsigned char model = !strcmp("?model", optarg); |
| unsigned char dump = !strcmp("?dump", optarg); |
| unsigned char cpuid = !strcmp("?cpuid", optarg); |
| x86_def_t *def; |
| char buf[256]; |
| |
| if (cpuid) { |
| (*cpu_fprintf)(f, "Recognized CPUID flags:\n"); |
| listflags(buf, sizeof (buf), (uint32_t)~0, feature_name, 1); |
| (*cpu_fprintf)(f, " f_edx: %s\n", buf); |
| listflags(buf, sizeof (buf), (uint32_t)~0, ext_feature_name, 1); |
| (*cpu_fprintf)(f, " f_ecx: %s\n", buf); |
| listflags(buf, sizeof (buf), (uint32_t)~0, ext2_feature_name, 1); |
| (*cpu_fprintf)(f, " extf_edx: %s\n", buf); |
| listflags(buf, sizeof (buf), (uint32_t)~0, ext3_feature_name, 1); |
| (*cpu_fprintf)(f, " extf_ecx: %s\n", buf); |
| return; |
| } |
| for (def = x86_defs; def; def = def->next) { |
| snprintf(buf, sizeof (buf), def->flags ? "[%s]": "%s", def->name); |
| if (model || dump) { |
| (*cpu_fprintf)(f, "x86 %16s %-48s\n", buf, def->model_id); |
| } else { |
| (*cpu_fprintf)(f, "x86 %16s\n", buf); |
| } |
| if (dump) { |
| memcpy(buf, &def->vendor1, sizeof (def->vendor1)); |
| memcpy(buf + 4, &def->vendor2, sizeof (def->vendor2)); |
| memcpy(buf + 8, &def->vendor3, sizeof (def->vendor3)); |
| buf[12] = '\0'; |
| (*cpu_fprintf)(f, |
| " family %d model %d stepping %d level %d xlevel 0x%x" |
| " vendor \"%s\"\n", |
| def->family, def->model, def->stepping, def->level, |
| def->xlevel, buf); |
| listflags(buf, sizeof (buf), def->features, feature_name, 0); |
| (*cpu_fprintf)(f, " feature_edx %08x (%s)\n", def->features, |
| buf); |
| listflags(buf, sizeof (buf), def->ext_features, ext_feature_name, |
| 0); |
| (*cpu_fprintf)(f, " feature_ecx %08x (%s)\n", def->ext_features, |
| buf); |
| listflags(buf, sizeof (buf), def->ext2_features, ext2_feature_name, |
| 0); |
| (*cpu_fprintf)(f, " extfeature_edx %08x (%s)\n", |
| def->ext2_features, buf); |
| listflags(buf, sizeof (buf), def->ext3_features, ext3_feature_name, |
| 0); |
| (*cpu_fprintf)(f, " extfeature_ecx %08x (%s)\n", |
| def->ext3_features, buf); |
| (*cpu_fprintf)(f, "\n"); |
| } |
| } |
| if (kvm_enabled()) { |
| (*cpu_fprintf)(f, "x86 %16s\n", "[host]"); |
| } |
| } |
| |
| int cpu_x86_register (CPUX86State *env, const char *cpu_model) |
| { |
| x86_def_t def1, *def = &def1; |
| |
| if (cpu_x86_find_by_name(def, cpu_model) < 0) |
| return -1; |
| if (def->vendor1) { |
| env->cpuid_vendor1 = def->vendor1; |
| env->cpuid_vendor2 = def->vendor2; |
| env->cpuid_vendor3 = def->vendor3; |
| } else { |
| env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1; |
| env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2; |
| env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3; |
| } |
| env->cpuid_vendor_override = def->vendor_override; |
| env->cpuid_level = def->level; |
| if (def->family > 0x0f) |
| env->cpuid_version = 0xf00 | ((def->family - 0x0f) << 20); |
| else |
| env->cpuid_version = def->family << 8; |
| env->cpuid_version |= ((def->model & 0xf) << 4) | ((def->model >> 4) << 16); |
| env->cpuid_version |= def->stepping; |
| env->cpuid_features = def->features; |
| env->pat = 0x0007040600070406ULL; |
| env->cpuid_ext_features = def->ext_features; |
| env->cpuid_ext2_features = def->ext2_features; |
| env->cpuid_ext3_features = def->ext3_features; |
| env->cpuid_xlevel = def->xlevel; |
| env->cpuid_kvm_features = def->kvm_features; |
| if (!kvm_enabled()) { |
| env->cpuid_features &= TCG_FEATURES; |
| env->cpuid_ext_features &= TCG_EXT_FEATURES; |
| env->cpuid_ext2_features &= (TCG_EXT2_FEATURES |
| #ifdef TARGET_X86_64 |
| | CPUID_EXT2_SYSCALL | CPUID_EXT2_LM |
| #endif |
| ); |
| env->cpuid_ext3_features &= TCG_EXT3_FEATURES; |
| } |
| { |
| const char *model_id = def->model_id; |
| int c, len, i; |
| if (!model_id) |
| model_id = ""; |
| len = strlen(model_id); |
| for(i = 0; i < 48; i++) { |
| if (i >= len) |
| c = '\0'; |
| else |
| c = (uint8_t)model_id[i]; |
| env->cpuid_model[i >> 2] |= c << (8 * (i & 3)); |
| } |
| } |
| return 0; |
| } |
| |
| #if !defined(CONFIG_USER_ONLY) |
| /* copy vendor id string to 32 bit register, nul pad as needed |
| */ |
| static void cpyid(const char *s, uint32_t *id) |
| { |
| char *d = (char *)id; |
| char i; |
| |
| for (i = sizeof (*id); i--; ) |
| *d++ = *s ? *s++ : '\0'; |
| } |
| |
| /* interpret radix and convert from string to arbitrary scalar, |
| * otherwise flag failure |
| */ |
| #define setscalar(pval, str, perr) \ |
| { \ |
| char *pend; \ |
| unsigned long ul; \ |
| \ |
| ul = strtoul(str, &pend, 0); \ |
| *str && !*pend ? (*pval = ul) : (*perr = 1); \ |
| } |
| |
| /* map cpuid options to feature bits, otherwise return failure |
| * (option tags in *str are delimited by whitespace) |
| */ |
| static void setfeatures(uint32_t *pval, const char *str, |
| const char **featureset, int *perr) |
| { |
| const char *p, *q; |
| |
| for (q = p = str; *p || *q; q = p) { |
| while (iswhite(*p)) |
| q = ++p; |
| while (*p && !iswhite(*p)) |
| ++p; |
| if (!*q && !*p) |
| return; |
| if (!lookup_feature(pval, q, p, featureset)) { |
| fprintf(stderr, "error: feature \"%.*s\" not available in set\n", |
| (int)(p - q), q); |
| *perr = 1; |
| return; |
| } |
| } |
| } |
| |
| /* map config file options to x86_def_t form |
| */ |
| static int cpudef_setfield(const char *name, const char *str, void *opaque) |
| { |
| x86_def_t *def = opaque; |
| int err = 0; |
| |
| if (!strcmp(name, "name")) { |
| def->name = strdup(str); |
| } else if (!strcmp(name, "model_id")) { |
| strncpy(def->model_id, str, sizeof (def->model_id)); |
| } else if (!strcmp(name, "level")) { |
| setscalar(&def->level, str, &err) |
| } else if (!strcmp(name, "vendor")) { |
| cpyid(&str[0], &def->vendor1); |
| cpyid(&str[4], &def->vendor2); |
| cpyid(&str[8], &def->vendor3); |
| } else if (!strcmp(name, "family")) { |
| setscalar(&def->family, str, &err) |
| } else if (!strcmp(name, "model")) { |
| setscalar(&def->model, str, &err) |
| } else if (!strcmp(name, "stepping")) { |
| setscalar(&def->stepping, str, &err) |
| } else if (!strcmp(name, "feature_edx")) { |
| setfeatures(&def->features, str, feature_name, &err); |
| } else if (!strcmp(name, "feature_ecx")) { |
| setfeatures(&def->ext_features, str, ext_feature_name, &err); |
| } else if (!strcmp(name, "extfeature_edx")) { |
| setfeatures(&def->ext2_features, str, ext2_feature_name, &err); |
| } else if (!strcmp(name, "extfeature_ecx")) { |
| setfeatures(&def->ext3_features, str, ext3_feature_name, &err); |
| } else if (!strcmp(name, "xlevel")) { |
| setscalar(&def->xlevel, str, &err) |
| } else { |
| fprintf(stderr, "error: unknown option [%s = %s]\n", name, str); |
| return (1); |
| } |
| if (err) { |
| fprintf(stderr, "error: bad option value [%s = %s]\n", name, str); |
| return (1); |
| } |
| return (0); |
| } |
| |
| /* register config file entry as x86_def_t |
| */ |
| static int cpudef_register(QemuOpts *opts, void *opaque) |
| { |
| x86_def_t *def = qemu_mallocz(sizeof (x86_def_t)); |
| |
| qemu_opt_foreach(opts, cpudef_setfield, def, 1); |
| def->next = x86_defs; |
| x86_defs = def; |
| return (0); |
| } |
| |
| void cpu_clear_apic_feature(CPUX86State *env) |
| { |
| env->cpuid_features &= ~CPUID_APIC; |
| } |
| |
| #endif /* !CONFIG_USER_ONLY */ |
| |
| /* register "cpudef" models defined in configuration file. Here we first |
| * preload any built-in definitions |
| */ |
| void x86_cpudef_setup(void) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); ++i) { |
| builtin_x86_defs[i].next = x86_defs; |
| builtin_x86_defs[i].flags = 1; |
| x86_defs = &builtin_x86_defs[i]; |
| } |
| #if !defined(CONFIG_USER_ONLY) |
| qemu_opts_foreach(qemu_find_opts("cpudef"), cpudef_register, NULL, 0); |
| #endif |
| } |
| |
| static void get_cpuid_vendor(CPUX86State *env, uint32_t *ebx, |
| uint32_t *ecx, uint32_t *edx) |
| { |
| *ebx = env->cpuid_vendor1; |
| *edx = env->cpuid_vendor2; |
| *ecx = env->cpuid_vendor3; |
| |
| /* sysenter isn't supported on compatibility mode on AMD, syscall |
| * isn't supported in compatibility mode on Intel. |
| * Normally we advertise the actual cpu vendor, but you can override |
| * this if you want to use KVM's sysenter/syscall emulation |
| * in compatibility mode and when doing cross vendor migration |
| */ |
| if (kvm_enabled() && ! env->cpuid_vendor_override) { |
| host_cpuid(0, 0, NULL, ebx, ecx, edx); |
| } |
| } |
| |
| void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, |
| uint32_t *eax, uint32_t *ebx, |
| uint32_t *ecx, uint32_t *edx) |
| { |
| /* test if maximum index reached */ |
| if (index & 0x80000000) { |
| if (index > env->cpuid_xlevel) |
| index = env->cpuid_level; |
| } else { |
| if (index > env->cpuid_level) |
| index = env->cpuid_level; |
| } |
| |
| switch(index) { |
| case 0: |
| *eax = env->cpuid_level; |
| get_cpuid_vendor(env, ebx, ecx, edx); |
| break; |
| case 1: |
| *eax = env->cpuid_version; |
| *ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */ |
| *ecx = env->cpuid_ext_features; |
| *edx = env->cpuid_features; |
| if (env->nr_cores * env->nr_threads > 1) { |
| *ebx |= (env->nr_cores * env->nr_threads) << 16; |
| *edx |= 1 << 28; /* HTT bit */ |
| } |
| break; |
| case 2: |
| /* cache info: needed for Pentium Pro compatibility */ |
| *eax = 1; |
| *ebx = 0; |
| *ecx = 0; |
| *edx = 0x2c307d; |
| break; |
| case 4: |
| /* cache info: needed for Core compatibility */ |
| if (env->nr_cores > 1) { |
| *eax = (env->nr_cores - 1) << 26; |
| } else { |
| *eax = 0; |
| } |
| switch (count) { |
| case 0: /* L1 dcache info */ |
| *eax |= 0x0000121; |
| *ebx = 0x1c0003f; |
| *ecx = 0x000003f; |
| *edx = 0x0000001; |
| break; |
| case 1: /* L1 icache info */ |
| *eax |= 0x0000122; |
| *ebx = 0x1c0003f; |
| *ecx = 0x000003f; |
| *edx = 0x0000001; |
| break; |
| case 2: /* L2 cache info */ |
| *eax |= 0x0000143; |
| if (env->nr_threads > 1) { |
| *eax |= (env->nr_threads - 1) << 14; |
| } |
| *ebx = 0x3c0003f; |
| *ecx = 0x0000fff; |
| *edx = 0x0000001; |
| break; |
| default: /* end of info */ |
| *eax = 0; |
| *ebx = 0; |
| *ecx = 0; |
| *edx = 0; |
| break; |
| } |
| break; |
| case 5: |
| /* mwait info: needed for Core compatibility */ |
| *eax = 0; /* Smallest monitor-line size in bytes */ |
| *ebx = 0; /* Largest monitor-line size in bytes */ |
| *ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE; |
| *edx = 0; |
| break; |
| case 6: |
| /* Thermal and Power Leaf */ |
| *eax = 0; |
| *ebx = 0; |
| *ecx = 0; |
| *edx = 0; |
| break; |
| case 9: |
| /* Direct Cache Access Information Leaf */ |
| *eax = 0; /* Bits 0-31 in DCA_CAP MSR */ |
| *ebx = 0; |
| *ecx = 0; |
| *edx = 0; |
| break; |
| case 0xA: |
| /* Architectural Performance Monitoring Leaf */ |
| *eax = 0; |
| *ebx = 0; |
| *ecx = 0; |
| *edx = 0; |
| break; |
| case 0xD: |
| /* Processor Extended State */ |
| if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) { |
| *eax = 0; |
| *ebx = 0; |
| *ecx = 0; |
| *edx = 0; |
| break; |
| } |
| if (kvm_enabled()) { |
| *eax = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EAX); |
| *ebx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EBX); |
| *ecx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_ECX); |
| *edx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EDX); |
| } else { |
| *eax = 0; |
| *ebx = 0; |
| *ecx = 0; |
| *edx = 0; |
| } |
| break; |
| case 0x80000000: |
| *eax = env->cpuid_xlevel; |
| *ebx = env->cpuid_vendor1; |
| *edx = env->cpuid_vendor2; |
| *ecx = env->cpuid_vendor3; |
| break; |
| case 0x80000001: |
| *eax = env->cpuid_version; |
| *ebx = 0; |
| *ecx = env->cpuid_ext3_features; |
| *edx = env->cpuid_ext2_features; |
| |
| /* The Linux kernel checks for the CMPLegacy bit and |
| * discards multiple thread information if it is set. |
| * So dont set it here for Intel to make Linux guests happy. |
| */ |
| if (env->nr_cores * env->nr_threads > 1) { |
| uint32_t tebx, tecx, tedx; |
| get_cpuid_vendor(env, &tebx, &tecx, &tedx); |
| if (tebx != CPUID_VENDOR_INTEL_1 || |
| tedx != CPUID_VENDOR_INTEL_2 || |
| tecx != CPUID_VENDOR_INTEL_3) { |
| *ecx |= 1 << 1; /* CmpLegacy bit */ |
| } |
| } |
| |
| if (kvm_enabled()) { |
| /* Nested SVM not yet supported in upstream QEMU */ |
| *ecx &= ~CPUID_EXT3_SVM; |
| } |
| break; |
| case 0x80000002: |
| case 0x80000003: |
| case 0x80000004: |
| *eax = env->cpuid_model[(index - 0x80000002) * 4 + 0]; |
| *ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1]; |
| *ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2]; |
| *edx = env->cpuid_model[(index - 0x80000002) * 4 + 3]; |
| break; |
| case 0x80000005: |
| /* cache info (L1 cache) */ |
| *eax = 0x01ff01ff; |
| *ebx = 0x01ff01ff; |
| *ecx = 0x40020140; |
| *edx = 0x40020140; |
| break; |
| case 0x80000006: |
| /* cache info (L2 cache) */ |
| *eax = 0; |
| *ebx = 0x42004200; |
| *ecx = 0x02008140; |
| *edx = 0; |
| break; |
| case 0x80000008: |
| /* virtual & phys address size in low 2 bytes. */ |
| /* XXX: This value must match the one used in the MMU code. */ |
| if (env->cpuid_ext2_features & CPUID_EXT2_LM) { |
| /* 64 bit processor */ |
| /* XXX: The physical address space is limited to 42 bits in exec.c. */ |
| *eax = 0x00003028; /* 48 bits virtual, 40 bits physical */ |
| } else { |
| if (env->cpuid_features & CPUID_PSE36) |
| *eax = 0x00000024; /* 36 bits physical */ |
| else |
| *eax = 0x00000020; /* 32 bits physical */ |
| } |
| *ebx = 0; |
| *ecx = 0; |
| *edx = 0; |
| if (env->nr_cores * env->nr_threads > 1) { |
| *ecx |= (env->nr_cores * env->nr_threads) - 1; |
| } |
| break; |
| case 0x8000000A: |
| *eax = 0x00000001; /* SVM Revision */ |
| *ebx = 0x00000010; /* nr of ASIDs */ |
| *ecx = 0; |
| *edx = 0; /* optional features */ |
| break; |
| default: |
| /* reserved values: zero */ |
| *eax = 0; |
| *ebx = 0; |
| *ecx = 0; |
| *edx = 0; |
| break; |
| } |
| } |
