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qemu-linux-user.20395
0137-x86-Data-structure-changes-to-suppo.patch
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File 0137-x86-Data-structure-changes-to-suppo.patch of Package qemu-linux-user.20395
From: Robert Hoo <robert.hu@linux.intel.com> Date: Mon, 15 Oct 2018 12:47:24 +0800 Subject: x86: Data structure changes to support MSR based features Add FeatureWordType indicator in struct FeatureWordInfo. Change feature_word_info[] accordingly. Change existing functions that refer to feature_word_info[] accordingly. Signed-off-by: Robert Hoo <robert.hu@linux.intel.com> Message-Id: <1539578845-37944-3-git-send-email-robert.hu@linux.intel.com> [ehabkost: fixed hvf_enabled() case] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> (cherry picked from commit 07585923485952bf4cb7da563c9f91fecc85d09c) [BR: BSC#1134880, FATE#327763] Signed-off-by: Bruce Rogers <brogers@suse.com> --- target/i386/cpu.c | 185 +++++++++++++++++++++++++++++++++------------- 1 file changed, 134 insertions(+), 51 deletions(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index fc190928fec4a41ba901e3ce7a77..3e5a9f67b47bc93cce27d3ae4f42 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -277,17 +277,36 @@ static void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1, /* missing: CPUID_XSAVE_XSAVEC, CPUID_XSAVE_XSAVES */ +typedef enum FeatureWordType { + CPUID_FEATURE_WORD, + MSR_FEATURE_WORD, +} FeatureWordType; + typedef struct FeatureWordInfo { + FeatureWordType type; /* feature flags names are 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. */ const char *feat_names[32]; - uint32_t cpuid_eax; /* Input EAX for CPUID */ - bool cpuid_needs_ecx; /* CPUID instruction uses ECX as input */ - uint32_t cpuid_ecx; /* Input ECX value for CPUID */ - int cpuid_reg; /* output register (R_* constant) */ + union { + /* If type==CPUID_FEATURE_WORD */ + struct { + uint32_t eax; /* Input EAX for CPUID */ + bool needs_ecx; /* CPUID instruction uses ECX as input */ + uint32_t ecx; /* Input ECX value for CPUID */ + int reg; /* output register (R_* constant) */ + } cpuid; + /* If type==MSR_FEATURE_WORD */ + struct { + uint32_t index; + struct { /*CPUID that enumerate this MSR*/ + FeatureWord cpuid_class; + uint32_t cpuid_flag; + } cpuid_dep; + } msr; + }; uint32_t tcg_features; /* Feature flags supported by TCG */ uint32_t unmigratable_flags; /* Feature flags known to be unmigratable */ uint32_t migratable_flags; /* Feature flags known to be migratable */ @@ -295,6 +314,7 @@ typedef struct FeatureWordInfo { static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { [FEAT_1_EDX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", @@ -305,10 +325,11 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { "fxsr", "sse", "sse2", "ss", "ht" /* Intel htt */, "tm", "ia64", "pbe", }, - .cpuid_eax = 1, .cpuid_reg = R_EDX, + .cpuid = {.eax = 1, .reg = R_EDX, }, .tcg_features = TCG_FEATURES, }, [FEAT_1_ECX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { "pni" /* Intel,AMD sse3 */, "pclmulqdq", "dtes64", "monitor", "ds-cpl", "vmx", "smx", "est", @@ -319,7 +340,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { "tsc-deadline", "aes", "xsave", "osxsave", "avx", "f16c", "rdrand", "hypervisor", }, - .cpuid_eax = 1, .cpuid_reg = R_ECX, + .cpuid = { .eax = 1, .reg = R_ECX, }, .tcg_features = TCG_EXT_FEATURES, }, /* Feature names that are already defined on feature_name[] but @@ -328,6 +349,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { * to features[FEAT_8000_0001_EDX] if and only if CPU vendor is AMD. */ [FEAT_8000_0001_EDX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL /* fpu */, NULL /* vme */, NULL /* de */, NULL /* pse */, NULL /* tsc */, NULL /* msr */, NULL /* pae */, NULL /* mce */, @@ -338,10 +360,11 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL /* fxsr */, "fxsr-opt", "pdpe1gb", "rdtscp", NULL, "lm", "3dnowext", "3dnow", }, - .cpuid_eax = 0x80000001, .cpuid_reg = R_EDX, + .cpuid = { .eax = 0x80000001, .reg = R_EDX, }, .tcg_features = TCG_EXT2_FEATURES, }, [FEAT_8000_0001_ECX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { "lahf-lm", "cmp-legacy", "svm", "extapic", "cr8legacy", "abm", "sse4a", "misalignsse", @@ -352,10 +375,11 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { "perfctr-nb", NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 0x80000001, .cpuid_reg = R_ECX, + .cpuid = { .eax = 0x80000001, .reg = R_ECX, }, .tcg_features = TCG_EXT3_FEATURES, }, [FEAT_C000_0001_EDX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL, NULL, "xstore", "xstore-en", NULL, NULL, "xcrypt", "xcrypt-en", @@ -366,10 +390,11 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 0xC0000001, .cpuid_reg = R_EDX, + .cpuid = { .eax = 0xC0000001, .reg = R_EDX, }, .tcg_features = TCG_EXT4_FEATURES, }, [FEAT_KVM] = { + .type = CPUID_FEATURE_WORD, .feat_names = { "kvmclock", "kvm-nopiodelay", "kvm-mmu", "kvmclock", "kvm-asyncpf", "kvm-steal-time", "kvm-pv-eoi", "kvm-pv-unhalt", @@ -380,10 +405,11 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { "kvmclock-stable-bit", NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = KVM_CPUID_FEATURES, .cpuid_reg = R_EAX, + .cpuid = { .eax = KVM_CPUID_FEATURES, .reg = R_EAX, }, .tcg_features = TCG_KVM_FEATURES, }, [FEAT_HYPERV_EAX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL /* hv_msr_vp_runtime_access */, NULL /* hv_msr_time_refcount_access */, NULL /* hv_msr_synic_access */, NULL /* hv_msr_stimer_access */, @@ -397,9 +423,10 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 0x40000003, .cpuid_reg = R_EAX, + .cpuid = { .eax = 0x40000003, .reg = R_EAX, }, }, [FEAT_HYPERV_EBX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL /* hv_create_partitions */, NULL /* hv_access_partition_id */, NULL /* hv_access_memory_pool */, NULL /* hv_adjust_message_buffers */, @@ -413,9 +440,10 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 0x40000003, .cpuid_reg = R_EBX, + .cpuid = { .eax = 0x40000003, .reg = R_EBX, }, }, [FEAT_HYPERV_EDX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL /* hv_mwait */, NULL /* hv_guest_debugging */, NULL /* hv_perf_monitor */, NULL /* hv_cpu_dynamic_part */, @@ -428,9 +456,10 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 0x40000003, .cpuid_reg = R_EDX, + .cpuid = { .eax = 0x40000003, .reg = R_EDX, }, }, [FEAT_SVM] = { + .type = CPUID_FEATURE_WORD, .feat_names = { "npt", "lbrv", "svm-lock", "nrip-save", "tsc-scale", "vmcb-clean", "flushbyasid", "decodeassists", @@ -441,10 +470,11 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 0x8000000A, .cpuid_reg = R_EDX, + .cpuid = { .eax = 0x8000000A, .reg = R_EDX, }, .tcg_features = TCG_SVM_FEATURES, }, [FEAT_7_0_EBX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { "fsgsbase", "tsc-adjust", NULL, "bmi1", "hle", "avx2", NULL, "smep", @@ -455,12 +485,15 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { "clwb", "intel-pt", "avx512pf", "avx512er", "avx512cd", "sha-ni", "avx512bw", "avx512vl", }, - .cpuid_eax = 7, - .cpuid_needs_ecx = true, .cpuid_ecx = 0, - .cpuid_reg = R_EBX, + .cpuid = { + .eax = 7, + .needs_ecx = true, .ecx = 0, + .reg = R_EBX, + }, .tcg_features = TCG_7_0_EBX_FEATURES, }, [FEAT_7_0_ECX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL, "avx512vbmi", "umip", "pku", "ospke", NULL, "avx512vbmi2", NULL, @@ -471,12 +504,15 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 7, - .cpuid_needs_ecx = true, .cpuid_ecx = 0, - .cpuid_reg = R_ECX, + .cpuid = { + .eax = 7, + .needs_ecx = true, .ecx = 0, + .reg = R_ECX, + }, .tcg_features = TCG_7_0_ECX_FEATURES, }, [FEAT_7_0_EDX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL, NULL, "avx512-4vnniw", "avx512-4fmaps", NULL, NULL, NULL, NULL, @@ -487,13 +523,16 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, "spec-ctrl", NULL, NULL, "arch-capabilities", NULL, "ssbd", }, - .cpuid_eax = 7, - .cpuid_needs_ecx = true, .cpuid_ecx = 0, - .cpuid_reg = R_EDX, + .cpuid = { + .eax = 7, + .needs_ecx = true, .ecx = 0, + .reg = R_EDX, + }, .tcg_features = TCG_7_0_EDX_FEATURES, .unmigratable_flags = CPUID_7_0_EDX_ARCH_CAPABILITIES, }, [FEAT_8000_0007_EDX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, @@ -504,12 +543,12 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 0x80000007, - .cpuid_reg = R_EDX, + .cpuid = { .eax = 0x80000007, .reg = R_EDX, }, .tcg_features = TCG_APM_FEATURES, .unmigratable_flags = CPUID_APM_INVTSC, }, [FEAT_8000_0008_EBX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, @@ -520,12 +559,12 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, "virt-ssbd", NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 0x80000008, - .cpuid_reg = R_EBX, + .cpuid = { .eax = 0x80000008, .reg = R_EBX, }, .tcg_features = 0, .unmigratable_flags = 0, }, [FEAT_XSAVE] = { + .type = CPUID_FEATURE_WORD, .feat_names = { "xsaveopt", "xsavec", "xgetbv1", "xsaves", NULL, NULL, NULL, NULL, @@ -536,12 +575,15 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 0xd, - .cpuid_needs_ecx = true, .cpuid_ecx = 1, - .cpuid_reg = R_EAX, + .cpuid = { + .eax = 0xd, + .needs_ecx = true, .ecx = 1, + .reg = R_EAX, + }, .tcg_features = TCG_XSAVE_FEATURES, }, [FEAT_6_EAX] = { + .type = CPUID_FEATURE_WORD, .feat_names = { NULL, NULL, "arat", NULL, NULL, NULL, NULL, NULL, @@ -552,13 +594,16 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, - .cpuid_eax = 6, .cpuid_reg = R_EAX, + .cpuid = { .eax = 6, .reg = R_EAX, }, .tcg_features = TCG_6_EAX_FEATURES, }, [FEAT_XSAVE_COMP_LO] = { - .cpuid_eax = 0xD, - .cpuid_needs_ecx = true, .cpuid_ecx = 0, - .cpuid_reg = R_EAX, + .type = CPUID_FEATURE_WORD, + .cpuid = { + .eax = 0xD, + .needs_ecx = true, .ecx = 0, + .reg = R_EAX, + }, .tcg_features = ~0U, .migratable_flags = XSTATE_FP_MASK | XSTATE_SSE_MASK | XSTATE_YMM_MASK | XSTATE_BNDREGS_MASK | XSTATE_BNDCSR_MASK | @@ -566,9 +611,12 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { XSTATE_PKRU_MASK, }, [FEAT_XSAVE_COMP_HI] = { - .cpuid_eax = 0xD, - .cpuid_needs_ecx = true, .cpuid_ecx = 0, - .cpuid_reg = R_EDX, + .type = CPUID_FEATURE_WORD, + .cpuid = { + .eax = 0xD, + .needs_ecx = true, .ecx = 0, + .reg = R_EDX, + }, .tcg_features = ~0U, }, }; @@ -2226,21 +2274,41 @@ static const TypeInfo host_x86_cpu_type_info = { #endif +static char *feature_word_description(FeatureWordInfo *f, uint32_t bit) +{ + assert(f->type == CPUID_FEATURE_WORD || f->type == MSR_FEATURE_WORD); + + switch (f->type) { + case CPUID_FEATURE_WORD: + { + const char *reg = get_register_name_32(f->cpuid.reg); + assert(reg); + return g_strdup_printf("CPUID.%02XH:%s", + f->cpuid.eax, reg); + } + case MSR_FEATURE_WORD: + return g_strdup_printf("MSR(%02XH)", + f->msr.index); + } + + return NULL; +} + static void report_unavailable_features(FeatureWord w, uint32_t mask) { FeatureWordInfo *f = &feature_word_info[w]; int i; + char *feat_word_str; for (i = 0; i < 32; ++i) { if ((1UL << i) & mask) { - const char *reg = get_register_name_32(f->cpuid_reg); - assert(reg); - warn_report("%s doesn't support requested feature: " - "CPUID.%02XH:%s%s%s [bit %d]", + feat_word_str = feature_word_description(f, i); + warn_report("%s doesn't support requested feature: %s%s%s [bit %d]", kvm_enabled() ? "host" : "TCG", - f->cpuid_eax, reg, + feat_word_str, f->feat_names[i] ? "." : "", f->feat_names[i] ? f->feat_names[i] : "", i); + g_free(feat_word_str); } } } @@ -2484,11 +2552,18 @@ static void x86_cpu_get_feature_words(Object *obj, Visitor *v, for (w = 0; w < FEATURE_WORDS; w++) { FeatureWordInfo *wi = &feature_word_info[w]; + /* + * We didn't have MSR features when "feature-words" was + * introduced. Therefore skipped other type entries. + */ + if (wi->type != CPUID_FEATURE_WORD) { + continue; + } X86CPUFeatureWordInfo *qwi = &word_infos[w]; - qwi->cpuid_input_eax = wi->cpuid_eax; - qwi->has_cpuid_input_ecx = wi->cpuid_needs_ecx; - qwi->cpuid_input_ecx = wi->cpuid_ecx; - qwi->cpuid_register = x86_reg_info_32[wi->cpuid_reg].qapi_enum; + qwi->cpuid_input_eax = wi->cpuid.eax; + qwi->has_cpuid_input_ecx = wi->cpuid.needs_ecx; + qwi->cpuid_input_ecx = wi->cpuid.ecx; + qwi->cpuid_register = x86_reg_info_32[wi->cpuid.reg].qapi_enum; qwi->features = array[w]; /* List will be in reverse order, but order shouldn't matter */ @@ -2844,12 +2919,19 @@ static uint32_t x86_cpu_get_supported_feature_word(FeatureWord w, bool migratable_only) { FeatureWordInfo *wi = &feature_word_info[w]; - uint32_t r; + uint32_t r = 0; if (kvm_enabled()) { - r = kvm_arch_get_supported_cpuid(kvm_state, wi->cpuid_eax, - wi->cpuid_ecx, - wi->cpuid_reg); + switch (wi->type) { + case CPUID_FEATURE_WORD: + r = kvm_arch_get_supported_cpuid(kvm_state, wi->cpuid.eax, + wi->cpuid.ecx, + wi->cpuid.reg); + break; + case MSR_FEATURE_WORD: + r = kvm_arch_get_supported_msr_feature(kvm_state, wi->msr.index); + break; + } } else if (tcg_enabled()) { r = wi->tcg_features; } else { @@ -3909,9 +3991,10 @@ static void x86_cpu_adjust_feat_level(X86CPU *cpu, FeatureWord w) { CPUX86State *env = &cpu->env; FeatureWordInfo *fi = &feature_word_info[w]; - uint32_t eax = fi->cpuid_eax; + uint32_t eax = fi->cpuid.eax; uint32_t region = eax & 0xF0000000; + assert(feature_word_info[w].type == CPUID_FEATURE_WORD); if (!env->features[w]) { return; }
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