From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752803AbXCTSLm (ORCPT ); Tue, 20 Mar 2007 14:11:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965555AbXCTSLm (ORCPT ); Tue, 20 Mar 2007 14:11:42 -0400 Received: from mail9.dslextreme.com ([66.51.199.94]:41531 "HELO mail9.dslextreme.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752674AbXCTSLl (ORCPT ); Tue, 20 Mar 2007 14:11:41 -0400 X-Greylist: delayed 399 seconds by postgrey-1.27 at vger.kernel.org; Tue, 20 Mar 2007 14:11:40 EDT Message-ID: <46002247.8020504@myrealbox.com> Date: Tue, 20 Mar 2007 11:04:55 -0700 From: Andy Lutomirski User-Agent: Thunderbird 3.0a1 (Windows/20070315) MIME-Version: 1.0 To: Arjan van de Ven , linux-kernel@vger.kernel.org CC: Eric St-Laurent , Lee Revell , tglx@linutronix.de, Maxim Levitsky , linux-kernel@vger.kernel.org, Ingo Molnar , Andrew Morton , Adrian Bunk , Len Brown Subject: Re: [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far References: <200703161230.03712.maximlevitsky@gmail.com> <1174088686.13341.347.camel@localhost.localdomain> <75b66ecd0703192204n503eb4d3g361064f66319dd4c@mail.gmail.com> <1174368995.14239.3.camel@perkele> <1174382141.1158.61.camel@laptopd505.fenrus.org> In-Reply-To: <1174382141.1158.61.camel@laptopd505.fenrus.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Arjan van de Ven wrote: > 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. > How about disabling it long enough to calibrate the timers and then turning it back on? --Andy (apologies if anyone gets duplicates of this. i'm encountering nightly-thunderbird-build bugs.)