| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 24 Jun 2024 09:11:08 -0700 From: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com> To: rafael@...nel.org, viresh.kumar@...aro.org, tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com, hpa@...or.com Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, x86@...nel.org, Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com> Subject: [PATCH v2 1/2] 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@...ux.intel.com> --- v2: - Prevent display in /proc/cpuinfo flags as suggested by Borris 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 3c7434329661..4cf929c457bb 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 */ -- 2.40.1
Powered by blists - more mailing lists