From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932310AbXCTJRb (ORCPT ); Tue, 20 Mar 2007 05:17:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932440AbXCTJRb (ORCPT ); Tue, 20 Mar 2007 05:17:31 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:40210 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932310AbXCTJRa (ORCPT ); Tue, 20 Mar 2007 05:17:30 -0400 Subject: Re: [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far From: Arjan van de Ven To: Eric St-Laurent Cc: Lee Revell , tglx@linutronix.de, Maxim Levitsky , linux-kernel@vger.kernel.org, Ingo Molnar , Andrew Morton , Adrian Bunk , Len Brown In-Reply-To: <1174368995.14239.3.camel@perkele> References: <200703161230.03712.maximlevitsky@gmail.com> <1174088686.13341.347.camel@localhost.localdomain> <75b66ecd0703192204n503eb4d3g361064f66319dd4c@mail.gmail.com> <1174368995.14239.3.camel@perkele> Content-Type: text/plain Organization: Intel International BV Date: Tue, 20 Mar 2007 10:15:41 +0100 Message-Id: <1174382141.1158.61.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.8.3 (2.8.3-1.fc6) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2007-03-20 at 01:36 -0400, Eric St-Laurent wrote: > On Tue, 2007-20-03 at 01:04 -0400, Lee Revell wrote: > > > I think CONFIG_TRY_TO_DISABLE_SMI would be excellent for debugging, > > not to mention people trying to spec out hardware for RT > > applications... > > There is a SMI disabling module in RTAI, check the smi-module.c in this: > > https://www.rtai.org/RTAI/rtai-3.5.tar.bz2 > > More infos: > > http://www.captain.at/rtai-smi-high-latency.php > http://www.captain.at/xenomai-smi-high-latency.php > > It might make sense to merge this code, at least in the -rt tree. it NEVER makes sense to disable SMM. SMM is there to ensure that your hardware doesn't get physically damaged. disabling that is a BAD idea. I'm no fan of SMM myself, but it's there, and we have to live with it. Disabling it without knowing what it does on your system is madness. -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org