Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754342Ab0AYRLU (ORCPT ); Mon, 25 Jan 2010 12:11:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754302Ab0AYRLU (ORCPT ); Mon, 25 Jan 2010 12:11:20 -0500 Received: from va3ehsobe003.messaging.microsoft.com ([216.32.180.13]:22648 "EHLO VA3EHSOBE003.bigfish.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754300Ab0AYRLT convert rfc822-to-8bit (ORCPT ); Mon, 25 Jan 2010 12:11:19 -0500 X-SpamScore: -19 X-BigFish: VPS-19(zz1432R98dN4015Lzz1202hzzz32i6bh61h) X-Spam-TCS-SCL: 0:0 X-WSS-ID: 0KWTBQA-02-8UA-02 X-M-MSG: Date: Mon, 25 Jan 2010 18:10:59 +0100 From: Andreas Herrmann To: Yuhong Bao CC: venkatesh.pallipadi@intel.com, markh@compro.net, dmarkh@cfl.rr.com, andi@firstfloor.org, Linus Torvalds , alain@knaff.lu, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86: Disable HPET MSI on ATI SB700/SB800 Message-ID: <20100125171059.GB5041@alberich.amd.com> References: <87bphpd4rt.fsf@basil.nowhere.org> <4B32565E.6000501@compro.net> <20091223191806.GA3336@linux-os.sc.intel.com> <4B3270FE.5090607@compro.net> <1261600243.16916.56.camel@localhost.localdomain> <4B476E8D.1030308@compro.net> <20100121190952.GA32523@linux-os.sc.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Content-Transfer-Encoding: 8BIT X-OriginalArrivalTime: 25 Jan 2010 17:10:59.0815 (UTC) FILETIME=[5DAAAF70:01CA9DE1] X-Reverse-DNS: ausb3extmailp02.amd.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1195 Lines: 33 On Fri, Jan 22, 2010 at 11:21:06PM -0800, Yuhong Bao wrote: > > > HPET MSI on platforms with ATI SB700/SB800 as they seem to have some > > side-effects on floppy DMA. Do not use HPET MSI on such platforms. Argh, will see what information I can find about this problem ... > I think somebody from AMD should review the situation.Clearly something is happening inside their southbridge.CCing?Andreas Herrmann?from AMD. I have the feeling that this problem should rather be fixed with a DMI quirk instead of disabling HPET MSI for the entire chipset. Was the latest available BIOS installed on the affected system? Thanks, Andreas -- Operating | Advanced Micro Devices GmbH System | Karl-Hammerschmidt-Str. 34, 85609 Dornach b. M?nchen, Germany Research | Gesch?ftsf?hrer: Andrew Bowd, Thomas M. McCoy, Giuliano Meroni Center | Sitz: Dornach, Gemeinde Aschheim, Landkreis M?nchen (OSRC) | Registergericht M?nchen, HRB Nr. 43632 -- 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/