linux-kernel - [tip:x86/cpufeature] x86/cpufeature: Add RING3MWAIT to CPU features

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Date:   Sat, 4 Feb 2017 08:31:54 -0800
From:   tip-bot for Grzegorz Andrejczuk <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, hpa@...or.com, tglx@...utronix.de,
        grzegorz.andrejczuk@...el.com, linux-kernel@...r.kernel.org
Subject: [tip:x86/cpufeature] x86/cpufeature: Add RING3MWAIT to CPU features

Commit-ID:  1d12d0ef0194ccc4dcebed3d96bb2301b26fc3ee
Gitweb:     http://git.kernel.org/tip/1d12d0ef0194ccc4dcebed3d96bb2301b26fc3ee
Author:     Grzegorz Andrejczuk <grzegorz.andrejczuk@...el.com>
AuthorDate: Fri, 20 Jan 2017 14:22:35 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Sat, 4 Feb 2017 08:51:09 +0100

x86/cpufeature: Add RING3MWAIT to CPU features

Add software-defined CPUID bit for the non-architectural ring 3
MONITOR/MWAIT feature.

Signed-off-by: Grzegorz Andrejczuk <grzegorz.andrejczuk@...el.com>
Cc: Piotr.Luc@...el.com
Cc: dave.hansen@...ux.intel.com
Link: http://lkml.kernel.org/r/1484918557-15481-4-git-send-email-grzegorz.andrejczuk@intel.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 arch/x86/include/asm/cpufeatures.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index d9d7136..56e5184 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -100,7 +100,7 @@
 #define X86_FEATURE_XTOPOLOGY	( 3*32+22) /* cpu topology enum extensions */
 #define X86_FEATURE_TSC_RELIABLE ( 3*32+23) /* TSC is known to be reliable */
 #define X86_FEATURE_NONSTOP_TSC	( 3*32+24) /* TSC does not stop in C states */
-/* free, was #define X86_FEATURE_CLFLUSH_MONITOR ( 3*32+25) * "" clflush reqd with monitor */
+#define X86_FEATURE_RING3MWAIT	( 3*32+25) /* ring 3 MONITOR/MWAIT */
 #define X86_FEATURE_EXTD_APICID	( 3*32+26) /* has extended APICID (8 bits) */
 #define X86_FEATURE_AMD_DCM     ( 3*32+27) /* multi-node processor */
 #define X86_FEATURE_APERFMPERF	( 3*32+28) /* APERFMPERF */