Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755147AbYJTUYP (ORCPT ); Mon, 20 Oct 2008 16:24:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753064AbYJTUX7 (ORCPT ); Mon, 20 Oct 2008 16:23:59 -0400 Received: from caffeine.csclub.uwaterloo.ca ([129.97.134.17]:47945 "EHLO caffeine.csclub.uwaterloo.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752954AbYJTUX6 (ORCPT ); Mon, 20 Oct 2008 16:23:58 -0400 Date: Mon, 20 Oct 2008 16:23:57 -0400 To: Alok Kataria Cc: Antipov Dmitry , linux-kernel@vger.kernel.org, Jordan Crouse , akataria@vmware.com Subject: Re: 2.6.27: 0 MHz CPU and wrong system time on AMD Geode system Message-ID: <20081020202357.GF22851@csclub.uwaterloo.ca> References: <673951224218937@webmail87.yandex.ru> <35f686220810171517y6632b4b2p3d251d43753eb3d6@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <35f686220810171517y6632b4b2p3d251d43753eb3d6@mail.gmail.com> User-Agent: Mutt/1.5.13 (2006-08-11) From: lsorense@csclub.uwaterloo.ca (Lennart Sorensen) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1273 Lines: 26 On Fri, Oct 17, 2008 at 03:17:39PM -0700, Alok Kataria wrote: > Can you try the attached debug patch, it puts a printk message and > will let us know what exaclty is failing during the calibration > process. > There were some major changes in the 2.6.27 cycle related to tsc calibration. > Apart from the unification for 32 and 64bit, some checks were added in > the code to make the calibration process more robust, maybe this > specific machine is more prone to SMI's than other, as a result the > checks are a little to harsh for this one. I recently had to disable the timer generating an SMI on our platform, because it would cause FIFO overflows on serial ports and other infrequent problems. SMM/SMI is just a pain in the rear. I haven't tried 2.6.27 yet, but have not had issues with 2.6.26 so far (other than it seemingly breaking the SC1200's ide controller with certain compact flash cards which I am still trying to track down, but that isn't a Geode LX problem, that's a Geode SC1200 problem). -- Len Sorensen -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/