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| author | H.J. Lu <hjl.tools@gmail.com> | 2018-07-26 10:49:19 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-07-26 13:31:11 -0700 |
| commit | be525a69a6630abc83144c0a96474f2e26da7443 (patch) | |
| tree | 35e467bb9d1c57717fea17b7de6230a56a07e05b | |
| parent | 65d87ade1ee6f3ac099105e3511bd09bdc24cf3f (diff) | |
| download | glibc-be525a69a6630abc83144c0a96474f2e26da7443.tar.gz glibc-be525a69a6630abc83144c0a96474f2e26da7443.tar.xz glibc-be525a69a6630abc83144c0a96474f2e26da7443.zip | |
x86: Populate COMMON_CPUID_INDEX_80000001 for Intel CPUs [BZ #23459]
Reviewed-by: Carlos O'Donell <carlos@redhat.com> [BZ #23459] * sysdeps/x86/cpu-features.c (get_extended_indices): New function. (init_cpu_features): Call get_extended_indices for both Intel and AMD CPUs. * sysdeps/x86/cpu-features.h (COMMON_CPUID_INDEX_80000001): Remove "for AMD" comment.
| -rw-r--r-- | sysdeps/x86/cpu-features.c | 27 | ||||
| -rw-r--r-- | sysdeps/x86/cpu-features.h | 2 |
2 files changed, 19 insertions, 10 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index 8108256c42..ea0b64fdb9 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -43,6 +43,20 @@ extern void TUNABLE_CALLBACK (set_x86_shstk) (tunable_val_t *) #endif static void +get_extended_indices (struct cpu_features *cpu_features) +{ + unsigned int eax, ebx, ecx, edx; + __cpuid (0x80000000, eax, ebx, ecx, edx); + if (eax >= 0x80000001) + __cpuid (0x80000001, + cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].eax, + cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ebx, + cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ecx, + cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].edx); + +} + +static void get_common_indeces (struct cpu_features *cpu_features, unsigned int *family, unsigned int *model, unsigned int *extended_model, unsigned int *stepping) @@ -224,6 +238,8 @@ init_cpu_features (struct cpu_features *cpu_features) get_common_indeces (cpu_features, &family, &model, &extended_model, &stepping); + get_extended_indices (cpu_features); + if (family == 0x06) { model += extended_model; @@ -338,16 +354,9 @@ init_cpu_features (struct cpu_features *cpu_features) get_common_indeces (cpu_features, &family, &model, &extended_model, &stepping); - ecx = cpu_features->cpuid[COMMON_CPUID_INDEX_1].ecx; + get_extended_indices (cpu_features); - unsigned int eax; - __cpuid (0x80000000, eax, ebx, ecx, edx); - if (eax >= 0x80000001) - __cpuid (0x80000001, - cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].eax, - cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ebx, - cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ecx, - cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].edx); + ecx = cpu_features->cpuid[COMMON_CPUID_INDEX_1].ecx; if (HAS_ARCH_FEATURE (AVX_Usable)) { diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/cpu-features.h index 3807a9d611..347a4b118d 100644 --- a/sysdeps/x86/cpu-features.h +++ b/sysdeps/x86/cpu-features.h @@ -108,7 +108,7 @@ enum { COMMON_CPUID_INDEX_1 = 0, COMMON_CPUID_INDEX_7, - COMMON_CPUID_INDEX_80000001, /* for AMD */ + COMMON_CPUID_INDEX_80000001, /* Keep the following line at the end. */ COMMON_CPUID_INDEX_MAX }; |