linux-kernel - [PATCH 1/2] MCE, AMD: Limit MCE decoding to current families for now

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Date:	Thu, 26 Aug 2010 16:06:28 +0200
From:	Borislav Petkov <bp@...64.org>
To:	<torvalds@...ux-foundation.org>
Cc:	<norsk5@...oo.com>, <linux-kernel@...r.kernel.org>,
	<linux-edac@...r.kernel.org>,
	Borislav Petkov <borislav.petkov@....com>
Subject: [PATCH 1/2] MCE, AMD: Limit MCE decoding to current families for now

From: Borislav Petkov <borislav.petkov@....com>

Limit MCE error decoding to current and older families only (K8-F11h).

Signed-off-by: Borislav Petkov <borislav.petkov@....com>
---
 drivers/edac/edac_mce_amd.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c
index bae9351..352dcc6 100644
--- a/drivers/edac/edac_mce_amd.c
+++ b/drivers/edac/edac_mce_amd.c
@@ -426,11 +426,15 @@ static struct notifier_block amd_mce_dec_nb = {
 static int __init mce_amd_init(void)
 {
 	/*
-	 * We can decode MCEs for Opteron and later CPUs:
+	 * We can decode MCEs for K8, F10h and F11h CPUs:
 	 */
-	if ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) &&
-	    (boot_cpu_data.x86 >= 0xf))
-		atomic_notifier_chain_register(&x86_mce_decoder_chain, &amd_mce_dec_nb);
+	if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
+		return 0;
+
+	if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11)
+		return 0;
+
+	atomic_notifier_chain_register(&x86_mce_decoder_chain, &amd_mce_dec_nb);
 
 	return 0;
 }
-- 
1.7.1

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