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| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2019-09-26 10:26:49 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-10-01 15:10:16 +0000 |
| commit | 6e079dc120a4aa95a25cfe536d4b1acd178918fd (patch) | |
| tree | c8b1d76e5dd361964389c0f628b162102e72add1 /src/arch | |
| parent | 5adbc767f66224e617b6c8204a868542b8010999 (diff) | |
| download | coreboot-6e079dc120a4aa95a25cfe536d4b1acd178918fd.tar.xz | |
cpu/intel/common: Move intel_ht_sibling() to common folder
Make intel_ht_sibling() available on all platforms.
Will be used in MP init to only write "Core" MSRs from one thread
on HyperThreading enabled platforms, to prevent race conditions and
resulting #GP if MSRs are written twice or are already locked.
Change-Id: I5d000b34ba4c6536dc866fbaf106b78e905e3e35
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35619
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/include/arch/cpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h index ffa532b47e..b82473621d 100644 --- a/src/arch/x86/include/arch/cpu.h +++ b/src/arch/x86/include/arch/cpu.h @@ -158,6 +158,7 @@ static inline unsigned int cpuid_edx(unsigned int op) #define CPUID_FEATURE_PAE (1 << 6) #define CPUID_FEATURE_PSE36 (1 << 17) +#define CPUID_FEAURE_HTT (1 << 28) // Intel leaf 0x4, AMD leaf 0x8000001d EAX |