Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765862AbXLNWGo (ORCPT ); Fri, 14 Dec 2007 17:06:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756317AbXLNWGh (ORCPT ); Fri, 14 Dec 2007 17:06:37 -0500 Received: from mx1.redhat.com ([66.187.233.31]:48556 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754350AbXLNWGg (ORCPT ); Fri, 14 Dec 2007 17:06:36 -0500 Message-ID: <4762FE3E.5020402@redhat.com> Date: Fri, 14 Dec 2007 17:05:50 -0500 From: Chuck Ebbert Organization: Red Hat User-Agent: Thunderbird 1.5.0.12 (X11/20071019) MIME-Version: 1.0 To: "H. Peter Anvin" CC: Rene Herman , Alan Cox , "David P. Reed" , Pavel Machek , Andi Kleen , "linux-os (Dick Johnson)" , David Newall , Paul Rolland , Krzysztof Halasa , linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar , rol@witbe.net Subject: Re: More info on port 80 symptoms on MCP51 machine. References: <475DE6F4.80702@zytor.com> <475DEB23.1000304@davidnewall.com> <20071211084059.3d03e11d@tux.DEF.witbe.net> <475E5D4B.8020101@keyaccess.nl> <475E7DC2.4060509@davidnewall.com> <475E8D91.20201@keyaccess.nl> <475E95A3.3070801@davidnewall.com> <20071211163017.GD16750@one.firstfloor.org> <475EBFBA.6090301@keyaccess.nl> <20071211191649.GB3437@elf.ucw.cz> <475EEC75.80609@keyaccess.nl> <47603F66.3070108@reed.com> <476043DA.5000602@keyaccess.nl> <47604B71.7090902@keyaccess.nl> <47604D1D.8000003@zytor.com> In-Reply-To: <47604D1D.8000003@zytor.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1212 Lines: 38 On 12/12/2007 04:05 PM, H. Peter Anvin wrote: > Rene Herman wrote: >> On 12-12-07 21:26, Rene Herman wrote: >> >>> On 12-12-07 21:07, David P. Reed wrote: >> >>>> Someone might have an in to nVidia to clarify this, since I don't. >>>> In any case, the udelay(2) approach seems to be a safe fix for this >>>> machine. >> >> By the way, _does_ anyone have a contact at nVidia who could clarify? >> Alan maybe? I'm quite curious what they did... >> >> Summary: >> >> Unless after booting with "acpi=off", outputs to port 0x80 (the legacy >> way to delay I/O) reliably, but not immediately, hang MCP51 machines. >> Outputs to port 0xed do not indicating it's a not a generic bus abort >> problem. >> > > Sorry, the first sentence didn't parse unambiguously for me. Do you > mean "acpi=off" works, or that "acpi=off" allows *subsequent* boots to > work? > > I have some people at nVidia I can probably ping. > Have them search on Google for: hp tx1000 noapic :) -- 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/