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author | Anthony Liguori <aliguori@us.ibm.com> | 2012-11-01 11:12:50 -0500 |
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committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-11-01 11:12:50 -0500 |
commit | 43552994c468d37d1e0e81b9f759338dcdbc5cc0 (patch) | |
tree | da1c12c4c47e2883d6252b1758c285596e9109df /target-i386/cpu.c | |
parent | 98c8a73b2e82eecac359b0b55a2d9d69f0a916ff (diff) | |
parent | b55f546eefe79cb6e6b15ebb23f352a736bafc39 (diff) | |
download | qemu-43552994c468d37d1e0e81b9f759338dcdbc5cc0.zip qemu-43552994c468d37d1e0e81b9f759338dcdbc5cc0.tar.gz qemu-43552994c468d37d1e0e81b9f759338dcdbc5cc0.tar.bz2 |
Merge remote-tracking branch 'qemu-kvm/uq/master' into staging
* qemu-kvm/uq/master: (28 commits)
update-linux-headers.sh: Handle new kernel uapi/ directories
target-i386: kvm_cpu_fill_host: use GET_SUPPORTED_CPUID
target-i386: cpu: make -cpu host/check/enforce code KVM-specific
target-i386: make cpu_x86_fill_host() void
Emulate qemu-kvms -no-kvm option
Issue warning when deprecated -tdf option is used
Issue warning when deprecated drive parameter boot=on|off is used
Use global properties to emulate -no-kvm-pit-reinjection
Issue warning when deprecated -no-kvm-pit is used
Use machine options to emulate -no-kvm-irqchip
cirrus_vga: allow configurable vram size
target-i386: Add missing kvm cpuid feature name
i386: cpu: add missing CPUID[EAX=7,ECX=0] flag names
i386: kvm: filter CPUID leaf 7 based on GET_SUPPORTED_CPUID, too
i386: kvm: reformat filter_features_for_kvm() code
i386: kvm: filter CPUID feature words earlier, on cpu.c
i386: kvm: mask cpuid_ext4_features bits earlier
i386: kvm: mask cpuid_kvm_features earlier
i386: kvm: x2apic is not supported without in-kernel irqchip
i386: kvm: set CPUID_EXT_TSC_DEADLINE_TIMER on kvm_arch_get_supported_cpuid()
...
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'target-i386/cpu.c')
-rw-r--r-- | target-i386/cpu.c | 98 |
1 files changed, 73 insertions, 25 deletions
diff --git a/target-i386/cpu.c b/target-i386/cpu.c index 156e919..c46286a 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -95,10 +95,14 @@ static const char *ext3_feature_name[] = { }; static const char *kvm_feature_name[] = { - "kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock", "kvm_asyncpf", NULL, "kvm_pv_eoi", 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, + "kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock", + "kvm_asyncpf", "kvm_steal_time", "kvm_pv_eoi", 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, }; static const char *svm_feature_name[] = { @@ -113,8 +117,8 @@ static const char *svm_feature_name[] = { }; static const char *cpuid_7_0_ebx_feature_name[] = { - NULL, NULL, NULL, NULL, NULL, NULL, NULL, "smep", - NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + "fsgsbase", NULL, NULL, "bmi1", "hle", "avx2", NULL, "smep", + "bmi2", "erms", "invpcid", "rtm", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "smap", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }; @@ -769,13 +773,20 @@ static int cpu_x86_fill_model_id(char *str) return 0; } -static int cpu_x86_fill_host(x86_def_t *x86_cpu_def) +/* Fill a x86_def_t struct with information about the host CPU, and + * the CPU features supported by the host hardware + host kernel + * + * This function may be called only if KVM is enabled. + */ +static void kvm_cpu_fill_host(x86_def_t *x86_cpu_def) { + KVMState *s = kvm_state; uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0; + assert(kvm_enabled()); + 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; @@ -784,21 +795,24 @@ static int cpu_x86_fill_host(x86_def_t *x86_cpu_def) 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; - if (kvm_enabled() && x86_cpu_def->level >= 7) { - x86_cpu_def->cpuid_7_0_ebx_features = kvm_arch_get_supported_cpuid(kvm_state, 0x7, 0, R_EBX); + x86_cpu_def->level = kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX); + x86_cpu_def->features = kvm_arch_get_supported_cpuid(s, 0x1, 0, R_EDX); + x86_cpu_def->ext_features = kvm_arch_get_supported_cpuid(s, 0x1, 0, R_ECX); + + if (x86_cpu_def->level >= 7) { + x86_cpu_def->cpuid_7_0_ebx_features = + kvm_arch_get_supported_cpuid(s, 0x7, 0, R_EBX); } else { x86_cpu_def->cpuid_7_0_ebx_features = 0; } - host_cpuid(0x80000000, 0, &eax, &ebx, &ecx, &edx); - x86_cpu_def->xlevel = eax; + x86_cpu_def->xlevel = kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX); + x86_cpu_def->ext2_features = + kvm_arch_get_supported_cpuid(s, 0x80000001, 0, R_EDX); + x86_cpu_def->ext3_features = + kvm_arch_get_supported_cpuid(s, 0x80000001, 0, R_ECX); - 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; @@ -807,11 +821,13 @@ static int cpu_x86_fill_host(x86_def_t *x86_cpu_def) x86_cpu_def->vendor2 == CPUID_VENDOR_VIA_2 && x86_cpu_def->vendor3 == CPUID_VENDOR_VIA_3) { host_cpuid(0xC0000000, 0, &eax, &ebx, &ecx, &edx); + eax = kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX); if (eax >= 0xC0000001) { /* Support VIA max extended level */ x86_cpu_def->xlevel2 = eax; host_cpuid(0xC0000001, 0, &eax, &ebx, &ecx, &edx); - x86_cpu_def->ext4_features = edx; + x86_cpu_def->ext4_features = + kvm_arch_get_supported_cpuid(s, 0xC0000001, 0, R_EDX); } } @@ -822,8 +838,6 @@ static int cpu_x86_fill_host(x86_def_t *x86_cpu_def) * unsupported ones later. */ x86_cpu_def->svm_features = -1; - - return 0; } static int unavailable_host_feature(struct model_features_t *f, uint32_t mask) @@ -844,8 +858,10 @@ static int unavailable_host_feature(struct model_features_t *f, uint32_t mask) /* 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. + * + * This function may be called only if KVM is enabled. */ -static int check_features_against_host(x86_def_t *guest_def) +static int kvm_check_features_against_host(x86_def_t *guest_def) { x86_def_t host_def; uint32_t mask; @@ -860,7 +876,9 @@ static int check_features_against_host(x86_def_t *guest_def) {&guest_def->ext3_features, &host_def.ext3_features, ~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001}}; - cpu_x86_fill_host(&host_def); + assert(kvm_enabled()); + + kvm_cpu_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 && @@ -1147,7 +1165,7 @@ static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model) if (name && !strcmp(name, def->name)) break; if (kvm_enabled() && name && strcmp(name, "host") == 0) { - cpu_x86_fill_host(x86_cpu_def); + kvm_cpu_fill_host(x86_cpu_def); } else if (!def) { goto error; } else { @@ -1285,8 +1303,8 @@ static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model) x86_cpu_def->kvm_features &= ~minus_kvm_features; x86_cpu_def->svm_features &= ~minus_svm_features; x86_cpu_def->cpuid_7_0_ebx_features &= ~minus_7_0_ebx_features; - if (check_cpuid) { - if (check_features_against_host(x86_cpu_def) && enforce_cpuid) + if (check_cpuid && kvm_enabled()) { + if (kvm_check_features_against_host(x86_cpu_def) && enforce_cpuid) goto error; } if (x86_cpu_def->cpuid_7_0_ebx_features && x86_cpu_def->level < 7) { @@ -1375,6 +1393,32 @@ CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp) return cpu_list; } +#ifdef CONFIG_KVM +static void filter_features_for_kvm(X86CPU *cpu) +{ + CPUX86State *env = &cpu->env; + KVMState *s = kvm_state; + + env->cpuid_features &= + kvm_arch_get_supported_cpuid(s, 1, 0, R_EDX); + env->cpuid_ext_features &= + kvm_arch_get_supported_cpuid(s, 1, 0, R_ECX); + env->cpuid_ext2_features &= + kvm_arch_get_supported_cpuid(s, 0x80000001, 0, R_EDX); + env->cpuid_ext3_features &= + kvm_arch_get_supported_cpuid(s, 0x80000001, 0, R_ECX); + env->cpuid_svm_features &= + kvm_arch_get_supported_cpuid(s, 0x8000000A, 0, R_EDX); + env->cpuid_7_0_ebx_features &= + kvm_arch_get_supported_cpuid(s, 7, 0, R_EBX); + env->cpuid_kvm_features &= + kvm_arch_get_supported_cpuid(s, KVM_CPUID_FEATURES, 0, R_EAX); + env->cpuid_ext4_features &= + kvm_arch_get_supported_cpuid(s, 0xC0000001, 0, R_EDX); + +} +#endif + int cpu_x86_register(X86CPU *cpu, const char *cpu_model) { CPUX86State *env = &cpu->env; @@ -1432,6 +1476,10 @@ int cpu_x86_register(X86CPU *cpu, const char *cpu_model) ); env->cpuid_ext3_features &= TCG_EXT3_FEATURES; env->cpuid_svm_features &= TCG_SVM_FEATURES; + } else { +#ifdef CONFIG_KVM + filter_features_for_kvm(cpu); +#endif } object_property_set_str(OBJECT(cpu), def->model_id, "model-id", &error); if (error) { |