From 77873887729aaddec5cd27203a6ce8c4987733e4 Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Thu, 6 Nov 2014 09:40:46 -0800 Subject: x86: Add support for Intel HWP feature detection. Add support of Hardware Managed Performance States (HWP) described in Volume 3 section 14.4 of the SDM. One bit CPUID.06H:EAX[bit 7] expresses the presence of the HWP feature on the processor. The remaining bits CPUID.06H:EAX[bit 8-11] denote the presense of various HWP features. Signed-off-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- arch/x86/include/asm/cpufeature.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/x86/include/asm/cpufeature.h') diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 0bb1335313b2..aede2c347bde 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -189,6 +189,11 @@ #define X86_FEATURE_DTHERM ( 7*32+ 7) /* Digital Thermal Sensor */ #define X86_FEATURE_HW_PSTATE ( 7*32+ 8) /* AMD HW-PState */ #define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */ +#define X86_FEATURE_HWP ( 7*32+ 10) /* "hwp" Intel HWP */ +#define X86_FEATURE_HWP_NOITFY ( 7*32+ 11) /* Intel HWP_NOTIFY */ +#define X86_FEATURE_HWP_ACT_WINDOW ( 7*32+ 12) /* Intel HWP_ACT_WINDOW */ +#define X86_FEATURE_HWP_EPP ( 7*32+13) /* Intel HWP_EPP */ +#define X86_FEATURE_HWP_PKG_REQ ( 7*32+14) /* Intel HWP_PKG_REQ */ /* Virtualization flags: Linux defined, word 8 */ #define X86_FEATURE_TPR_SHADOW ( 8*32+ 0) /* Intel TPR Shadow */ -- cgit v1.2.3