linux-kernel - [PATCH 03/17] x86: MCE: Port K7 bank 0 quirk to 64bit mce code

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Message-Id: <5a2337a03ce794fe7cf69e338ffacacb3770797c.1243377662.git.ak@linux.intel.com>
Date:	Wed, 27 May 2009 01:18:02 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	linux-kernel@...r.kernel.org, x86@...nel.org, hpa@...or.com
Cc:	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 03/17] x86: MCE: Port K7 bank 0 quirk to 64bit mce code

From: Andi Kleen <ak@...ux.intel.com>

Various K7 have broken bank 0s. Don't enable it by default

Port from the 32bit code.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 arch/x86/kernel/cpu/mcheck/mce.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 89c9d6b..26048b5 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -651,6 +651,12 @@ static void mce_cpu_quirks(struct cpuinfo_x86 *c)
 			 */
 			mce_bootlog = 0;
 		}
+		/*
+		 * Various K7s with broken bank 0 around. Always disable
+		 * by default.
+		 */
+		 if (c->x86 == 6)
+			bank[0] = 0;
 	}
 
 	if (c->x86_vendor == X86_VENDOR_INTEL) {
-- 
1.6.0.2

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