diff options
| 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/cpu/intel/common/common.h | |
| parent | 5adbc767f66224e617b6c8204a868542b8010999 (diff) | |
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/cpu/intel/common/common.h')
| -rw-r--r-- | src/cpu/intel/common/common.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/cpu/intel/common/common.h b/src/cpu/intel/common/common.h index b9ac0566c6..f6b8e57ffd 100644 --- a/src/cpu/intel/common/common.h +++ b/src/cpu/intel/common/common.h @@ -15,6 +15,8 @@ #ifndef _CPU_INTEL_COMMON_H #define _CPU_INTEL_COMMON_H +#include <stdint.h> + void set_vmx_and_lock(void); void set_feature_ctrl_vmx(void); void set_feature_ctrl_lock(void); @@ -27,4 +29,9 @@ void set_feature_ctrl_lock(void); struct cppc_config; void cpu_init_cppc_config(struct cppc_config *config, u32 version); +/* + * Returns true if it's not thread 0 on a hyperthreading enabled core. + */ +bool intel_ht_sibling(void); + #endif |