linux-kernel - [PATCH 8/15 -tip] x86: Add cpufeature for Platform feature

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Message-Id: <1242060644.5139.18.camel@ht.satnam>
Date:	Mon, 11 May 2009 22:20:44 +0530
From:	Jaswinder Singh Rajput <jaswinder@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	"H. Peter Anvin" <hpa@...nel.org>,
	Robert Richter <robert.richter@....com>,
	x86 maintainers <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 8/15 -tip] x86: Add cpufeature for Platform feature


X86_FEATURE_PLATFORM : Platform Feature MSR_PLATFORM_BRV

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@...il.com>
---
 arch/x86/include/asm/cpufeature.h |    1 +
 arch/x86/kernel/cpu/intel.c       |    7 +++++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index f9e8a02..6eb9134 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -162,6 +162,7 @@
 #define X86_FEATURE_SOFT_POWERON (7*32+ 7) /* Soft Poweron configuration*/
 #define X86_FEATURE_FSB_FREQ 	(7*32+ 8) /* Scaleable bus speed	*/
 #define X86_FEATURE_MISC 	(7*32+ 9) /* Miscellaneous features	*/
+#define X86_FEATURE_PLATFORM 	(7*32+ 10) /* Platform feature		*/
 
 /* Virtualization flags: Linux defined */
 #define X86_FEATURE_TPR_SHADOW  (8*32+ 0) /* Intel TPR Shadow */
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index f63b151..9c8f386 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -461,6 +461,13 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
 
 		/* Miscellaneous Features IA32_MISC_ENABLE		*/
 		set_cpu_cap(c, X86_FEATURE_MISC);
+
+		switch (c->x86_model) {
+		case 3: case 4: case 6:
+			/* Platform Feature MSR_PLATFORM_BRV		*/
+			set_cpu_cap(c, X86_FEATURE_PLATFORM);
+			break;
+		}
 	}
 }
 
-- 
1.6.0.6



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