From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754610AbZHJM4m (ORCPT ); Mon, 10 Aug 2009 08:56:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754069AbZHJM4l (ORCPT ); Mon, 10 Aug 2009 08:56:41 -0400 Received: from bar.sig21.net ([80.81.252.164]:40806 "EHLO bar.sig21.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754015AbZHJM4k (ORCPT ); Mon, 10 Aug 2009 08:56:40 -0400 Date: Mon, 10 Aug 2009 14:56:51 +0200 From: Johannes Stezenbach To: Andi Kleen Cc: x86@kernel.org, linux-kernel@vger.kernel.org, "Rafael J. Wysocki" Subject: Re: 2.6.31-rc5 regression: x86 MCE malfunction on Thinkpad T42p Message-ID: <20090810125651.GB6082@sig21.net> References: <20090807170942.GB9177@sig21.net> <87k51cgdt8.fsf@basil.nowhere.org> <20090810122731.GA5863@sig21.net> <20090810123228.GD6838@basil.fritz.box> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090810123228.GD6838@basil.fritz.box> User-Agent: Mutt/1.5.20 (2009-06-14) X-Spam-21-Score: -4.0 (----) X-Spam-21-Report: No, score=-4.0 required=5.0 tests=ALL_TRUSTED=-1.8,AWL=0.356,BAYES_00=-2.599 autolearn=no Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 10, 2009 at 02:32:28PM +0200, Andi Kleen wrote: > > > The appended patch should remove the warning. Can you please test it? > > > > It works (no more warning), but I feel I'm better off using "lapic" > > Thanks for testing. > > > because it enables thermal monitoring and performance counters. > > When the BIOS doesn't enable it then force enabling lapic might not work. > > This could cause either boot failures (obvious) or more subtle > problems like SMM doing something unexpected. Just saying that if you have > strange problems later first try disabling this option again. Thanks for the heads-up. I remember I tried to use oprofile in the past on this machine and was disappointed that it only got the timer event. I'll keep lapic for now unless I see signs of instability. Johannes