linux-kernel - [PATCH 13/15 -tip] x86: Add cpufeature for Bus configuration

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Message-Id: <1242060858.5139.23.camel@ht.satnam>
Date:	Mon, 11 May 2009 22:24:18 +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 13/15 -tip] x86: Add cpufeature for Bus configuration


X86_FEATURE_BUS_CFG : MSRC001_1023 Bus Unit Configuration Register (BU_CFG)

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@...il.com>
---
 arch/x86/include/asm/cpufeature.h |    1 +
 arch/x86/kernel/cpu/amd.c         |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 101d8de..aee0978 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -167,6 +167,7 @@
 #define X86_FEATURE_SYS_CFG 	(7*32+ 12) /* System configuration	*/
 #define X86_FEATURE_SMM 	(7*32+ 13) /* System Management	Mode	*/
 #define X86_FEATURE_MM_CFG 	(7*32+ 14) /* MM configuration		*/
+#define X86_FEATURE_BUS_CFG 	(7*32+ 15) /* Bus configuration		*/
 
 /* Virtualization flags: Linux defined */
 #define X86_FEATURE_TPR_SHADOW  (8*32+ 0) /* Intel TPR Shadow */
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index d068044..4b7f7dc 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -497,6 +497,8 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
 		set_cpu_cap(c, X86_FEATURE_CACHE_CTL);
 		/* MSRC001_0058 MMIO Configuration Base Address Register*/
 		set_cpu_cap(c, X86_FEATURE_MM_CFG);
+		/* MSRC001_1023 Bus Unit Configuration Register (BU_CFG)*/
+		set_cpu_cap(c, X86_FEATURE_BUS_CFG);
 	}
 }
 
-- 
1.6.0.6



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