diff options
| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2024-06-24 09:11:08 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-06-28 20:54:13 +0200 |
| commit | 7ea81936b85317aee8a73cd35d7f9cd6ce654dee (patch) | |
| tree | e732965eb24a0a8a96388d186ebd5f7e81125d1d /arch/x86/include | |
| parent | f53b4bb83d5e29e0bce4d7505a89cc88302f1e72 (diff) | |
x86/cpufeatures: Add HWP highest perf change feature flag
When CPUID[6].EAX[15] is set to 1, this CPU supports notification for
HWP (Hardware P-states) highest performance change.
Add a feature flag to check if the CPU supports HWP highest performance
change.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20240624161109.1427640-2-srinivas.pandruvada@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/cpufeatures.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 6c128d463a14..0d99515530d3 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -361,6 +361,7 @@ #define X86_FEATURE_HWP_ACT_WINDOW (14*32+ 9) /* HWP Activity Window */ #define X86_FEATURE_HWP_EPP (14*32+10) /* HWP Energy Perf. Preference */ #define X86_FEATURE_HWP_PKG_REQ (14*32+11) /* HWP Package Level Request */ +#define X86_FEATURE_HWP_HIGHEST_PERF_CHANGE (14*32+15) /* "" HWP Highest perf change */ #define X86_FEATURE_HFI (14*32+19) /* Hardware Feedback Interface */ /* AMD SVM Feature Identification, CPUID level 0x8000000a (EDX), word 15 */ |