Re: [PATCH 01/19] x86/cpufreatures: add AMD CPPC extension feature flag
From: Shuah Khan <skhan@linuxfoundation.org>
Date: 2021-09-08 20:00:10
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On 9/8/21 8:59 AM, Huang Rui wrote:
Add Collaborative Processor Performance Control Extension feature flag for AMD processors.
Please add a couple of sentences about the feature and what it does.
quoted hunk ↗ jump to hunk
Signed-off-by: Huang Rui <ray.huang@amd.com> --- arch/x86/include/asm/cpufeatures.h | 1 + 1 file changed, 1 insertion(+)diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index d0ce5cfd3ac1..f7aea50e3371 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h@@ -313,6 +313,7 @@ #define X86_FEATURE_AMD_SSBD (13*32+24) /* "" Speculative Store Bypass Disable */ #define X86_FEATURE_VIRT_SSBD (13*32+25) /* Virtualized Speculative Store Bypass Disable */ #define X86_FEATURE_AMD_SSB_NO (13*32+26) /* "" Speculative Store Bypass is fixed in hardware. */ +#define X86_FEATURE_AMD_CPPC_EXT (13*32+27) /* Collaborative Processor Performance Control Extension */ /* Thermal and Power Management Leaf, CPUID level 0x00000006 (EAX), word 14 */ #define X86_FEATURE_DTHERM (14*32+ 0) /* Digital Thermal Sensor */
thanks, -- Shuah