diff options
Diffstat (limited to 'target-i386/cpu.c')
| -rw-r--r-- | target-i386/cpu.c | 91 |
1 files changed, 59 insertions, 32 deletions
diff --git a/target-i386/cpu.c b/target-i386/cpu.c index 3fa14bf171..0af43a3ae1 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -331,14 +331,14 @@ static const char *cpuid_6_feature_name[] = { #define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_PCLMULQDQ | \ CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 | CPUID_EXT_CX16 | \ CPUID_EXT_SSE41 | CPUID_EXT_SSE42 | CPUID_EXT_POPCNT | \ + CPUID_EXT_XSAVE | /* CPUID_EXT_OSXSAVE is dynamic */ \ CPUID_EXT_MOVBE | CPUID_EXT_AES | CPUID_EXT_HYPERVISOR) /* missing: CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_SMX, CPUID_EXT_EST, CPUID_EXT_TM2, CPUID_EXT_CID, CPUID_EXT_FMA, CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_PCID, CPUID_EXT_DCA, - CPUID_EXT_X2APIC, CPUID_EXT_TSC_DEADLINE_TIMER, CPUID_EXT_XSAVE, - CPUID_EXT_OSXSAVE, CPUID_EXT_AVX, CPUID_EXT_F16C, - CPUID_EXT_RDRAND */ + CPUID_EXT_X2APIC, CPUID_EXT_TSC_DEADLINE_TIMER, CPUID_EXT_AVX, + CPUID_EXT_F16C, CPUID_EXT_RDRAND */ #ifdef TARGET_X86_64 #define TCG_EXT2_X86_64_FEATURES (CPUID_EXT2_SYSCALL | CPUID_EXT2_LM) @@ -358,15 +358,17 @@ static const char *cpuid_6_feature_name[] = { #define TCG_7_0_EBX_FEATURES (CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_SMAP | \ CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ADX | \ CPUID_7_0_EBX_PCOMMIT | CPUID_7_0_EBX_CLFLUSHOPT | \ - CPUID_7_0_EBX_CLWB) + CPUID_7_0_EBX_CLWB | CPUID_7_0_EBX_MPX | CPUID_7_0_EBX_FSGSBASE) /* missing: - CPUID_7_0_EBX_FSGSBASE, CPUID_7_0_EBX_HLE, CPUID_7_0_EBX_AVX2, + CPUID_7_0_EBX_HLE, CPUID_7_0_EBX_AVX2, CPUID_7_0_EBX_ERMS, CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM, CPUID_7_0_EBX_RDSEED */ #define TCG_7_0_ECX_FEATURES 0 #define TCG_APM_FEATURES 0 #define TCG_6_EAX_FEATURES CPUID_6_EAX_ARAT - +#define TCG_XSAVE_FEATURES (CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XGETBV1) + /* missing: + CPUID_XSAVE_XSAVEC, CPUID_XSAVE_XSAVES */ typedef struct FeatureWordInfo { const char **feat_names; @@ -440,7 +442,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .cpuid_eax = 0xd, .cpuid_needs_ecx = true, .cpuid_ecx = 1, .cpuid_reg = R_EAX, - .tcg_features = 0, + .tcg_features = TCG_XSAVE_FEATURES, }, [FEAT_6_EAX] = { .feat_names = cpuid_6_feature_name, @@ -470,12 +472,7 @@ static const X86RegisterInfo32 x86_reg_info_32[CPU_NB_REGS32] = { }; #undef REGISTER -typedef struct ExtSaveArea { - uint32_t feature, bits; - uint32_t offset, size; -} ExtSaveArea; - -static const ExtSaveArea ext_save_areas[] = { +const ExtSaveArea x86_ext_save_areas[] = { [2] = { .feature = FEAT_1_ECX, .bits = CPUID_EXT_AVX, .offset = 0x240, .size = 0x100 }, [3] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_MPX, @@ -2323,10 +2320,13 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, *ebx = (cpu->apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */ *ecx = env->features[FEAT_1_ECX]; + if ((*ecx & CPUID_EXT_XSAVE) && (env->cr[4] & CR4_OSXSAVE_MASK)) { + *ecx |= CPUID_EXT_OSXSAVE; + } *edx = env->features[FEAT_1_EDX]; if (cs->nr_cores * cs->nr_threads > 1) { *ebx |= (cs->nr_cores * cs->nr_threads) << 16; - *edx |= 1 << 28; /* HTT bit */ + *edx |= CPUID_HT; } break; case 2: @@ -2450,7 +2450,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, break; case 0xD: { KVMState *s = cs->kvm_state; - uint64_t kvm_mask; + uint64_t ena_mask; int i; /* Processor Extended State */ @@ -2458,35 +2458,39 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, *ebx = 0; *ecx = 0; *edx = 0; - if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE) || !kvm_enabled()) { + if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE)) { break; } - kvm_mask = - kvm_arch_get_supported_cpuid(s, 0xd, 0, R_EAX) | - ((uint64_t)kvm_arch_get_supported_cpuid(s, 0xd, 0, R_EDX) << 32); + if (kvm_enabled()) { + ena_mask = kvm_arch_get_supported_cpuid(s, 0xd, 0, R_EDX); + ena_mask <<= 32; + ena_mask |= kvm_arch_get_supported_cpuid(s, 0xd, 0, R_EAX); + } else { + ena_mask = -1; + } if (count == 0) { *ecx = 0x240; - for (i = 2; i < ARRAY_SIZE(ext_save_areas); i++) { - const ExtSaveArea *esa = &ext_save_areas[i]; - if ((env->features[esa->feature] & esa->bits) == esa->bits && - (kvm_mask & (1 << i)) != 0) { + for (i = 2; i < ARRAY_SIZE(x86_ext_save_areas); i++) { + const ExtSaveArea *esa = &x86_ext_save_areas[i]; + if ((env->features[esa->feature] & esa->bits) == esa->bits + && ((ena_mask >> i) & 1) != 0) { if (i < 32) { - *eax |= 1 << i; + *eax |= 1u << i; } else { - *edx |= 1 << (i - 32); + *edx |= 1u << (i - 32); } *ecx = MAX(*ecx, esa->offset + esa->size); } } - *eax |= kvm_mask & (XSTATE_FP | XSTATE_SSE); + *eax |= ena_mask & (XSTATE_FP | XSTATE_SSE); *ebx = *ecx; } else if (count == 1) { *eax = env->features[FEAT_XSAVE]; - } else if (count < ARRAY_SIZE(ext_save_areas)) { - const ExtSaveArea *esa = &ext_save_areas[count]; - if ((env->features[esa->feature] & esa->bits) == esa->bits && - (kvm_mask & (1 << count)) != 0) { + } else if (count < ARRAY_SIZE(x86_ext_save_areas)) { + const ExtSaveArea *esa = &x86_ext_save_areas[count]; + if ((env->features[esa->feature] & esa->bits) == esa->bits + && ((ena_mask >> count) & 1) != 0) { *eax = esa->size; *ebx = esa->offset; } @@ -2639,6 +2643,8 @@ static void x86_cpu_reset(CPUState *s) X86CPU *cpu = X86_CPU(s); X86CPUClass *xcc = X86_CPU_GET_CLASS(cpu); CPUX86State *env = &cpu->env; + target_ulong cr4; + uint64_t xcr0; int i; xcc->parent_reset(s); @@ -2698,7 +2704,8 @@ static void x86_cpu_reset(CPUState *s) cpu_set_fpuc(env, 0x37f); env->mxcsr = 0x1f80; - env->xstate_bv = XSTATE_FP | XSTATE_SSE; + /* All units are in INIT state. */ + env->xstate_bv = 0; env->pat = 0x0007040600070406ULL; env->msr_ia32_misc_enable = MSR_IA32_MISC_ENABLE_DEFAULT; @@ -2709,7 +2716,27 @@ static void x86_cpu_reset(CPUState *s) cpu_breakpoint_remove_all(s, BP_CPU); cpu_watchpoint_remove_all(s, BP_CPU); - env->xcr0 = 1; + cr4 = 0; + xcr0 = XSTATE_FP; + +#ifdef CONFIG_USER_ONLY + /* Enable all the features for user-mode. */ + if (env->features[FEAT_1_EDX] & CPUID_SSE) { + xcr0 |= XSTATE_SSE; + } + if (env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_MPX) { + xcr0 |= XSTATE_BNDREGS | XSTATE_BNDCSR; + } + if (env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE) { + cr4 |= CR4_OSFXSR_MASK | CR4_OSXSAVE_MASK; + } + if (env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_FSGSBASE) { + cr4 |= CR4_FSGSBASE_MASK; + } +#endif + + env->xcr0 = xcr0; + cpu_x86_update_cr4(env, cr4); /* * SDM 11.11.5 requires: |