linux-kernel - [PATCH] [3/9] MCE: Port K7 bank 0 quirk to 64bit mce code

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Message-Id: <20080704212027.B7F441B431F@basil.firstfloor.org>
Date:	Fri,  4 Jul 2008 23:20:27 +0200 (CEST)
From:	Andi Kleen <andi@...stfloor.org>
To:	masbock@...ux.vnet.ibm.com, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] [3/9] MCE: Port K7 bank 0 quirk to 64bit mce code


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_64.c |    6 ++++++
 1 file changed, 6 insertions(+)

Index: linux/arch/x86/kernel/cpu/mcheck/mce_64.c
===================================================================
--- linux.orig/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ linux/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -482,6 +482,12 @@ static void __cpuinit mce_cpu_quirks(str
 			/* Lots of broken BIOS around that don't clear them
 			   by default and leave crap in there. Don't log. */
 			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) {
 		/*
--
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