Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758601AbXEIUw1 (ORCPT ); Wed, 9 May 2007 16:52:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755221AbXEIUwT (ORCPT ); Wed, 9 May 2007 16:52:19 -0400 Received: from cmx2.usace.army.mil ([140.194.245.34]:17888 "EHLO cmx2.usace.army.mil" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754614AbXEIUwS (ORCPT ); Wed, 9 May 2007 16:52:18 -0400 Message-ID: <46423477.2080509@bellsouth.net> Date: Wed, 09 May 2007 15:52:07 -0500 From: Jay Cliburn Reply-To: jacliburn@bellsouth.net User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) MIME-Version: 1.0 To: Jeff Garzik CC: Chuck Ebbert , Tejun Heo , Greg K-H , linux-kernel , =?ISO-8859-1?Q?Mat=ED=ADas_?= =?ISO-8859-1?Q?Alejandro_Torres?= Subject: Re: [PATCH] pci-quirks: disable MSI on RS400-200 and RS480, take #2 References: <4641BD26.1020501@gmail.com> <4641EAA5.4030409@redhat.com> <4641EDDC.1020102@gmail.com> <4641EF46.2090506@redhat.com> <46421FCA.7010807@garzik.org> In-Reply-To: <46421FCA.7010807@garzik.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 09 May 2007 20:52:13.0107 (UTC) FILETIME=[EB625030:01C7927B] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1429 Lines: 42 Jeff Garzik wrote: > Chuck Ebbert wrote: >> Tejun Heo wrote: >>>> FWIW several distros have turned off MSI by default and added >>>> a "pci=msi" option to enable it. >>> Yeah, it seem to cause a lot of problems on certain chips but I think >>> the correct path is to add PCI quirks for those. Most MSI problems I've >>> seen are on these ATI chips. Do you happen to know any other? >> >> We had devices that didn't do MSI right, e.g. forcedeth and others I >> can't recall now. > > AFAIK that's a broken diagnosis. It's the system, not the device, that > is problematic. > In the case of the Attansic L1 ethernet driver, here's what we see: chipset kernel arch MSI functionality =============== =========== ================= Intel 945G/ICH7 x86_64 yes Intel 945G/ICH7 i386 yes Via K8T890 x86_64 yes Via K8T890 i386 no I still don't know why, but we get a flood of APIC errors after starting the atl1 driver on a Via K8T890 board (Asus M2V, for example) under a 32-bit kernel, and *only* under a 32-bit kernel. http://lkml.org/lkml/2007/4/8/68 Supporting files and such at ftp://ftp.hogchain.net/pub/linux/m2v/apic-problem Any hints heartily welcomed... Jay - 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/