Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762395AbYAKSBJ (ORCPT ); Fri, 11 Jan 2008 13:01:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761281AbYAKSA5 (ORCPT ); Fri, 11 Jan 2008 13:00:57 -0500 Received: from terminus.zytor.com ([198.137.202.10]:59369 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759896AbYAKSA4 (ORCPT ); Fri, 11 Jan 2008 13:00:56 -0500 Message-ID: <4787AD72.3080100@zytor.com> Date: Fri, 11 Jan 2008 09:54:58 -0800 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: "David P. Reed" CC: Alan Cox , Rene Herman , Zachary Amsden , Christer Weinigel , Ondrej Zary , Bodo Eggert <7eggert@gmx.de>, Ingo Molnar , Paul Rolland , Pavel Machek , Thomas Gleixner , linux-kernel@vger.kernel.org, Ingo Molnar , rol Subject: Re: [linux-kernel] Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override. References: <9BdU5-1YW-9@gated-at.bofh.it> <200801081810.58904.linux@rainbow-software.org> <4783B1B2.6070005@reed.com> <200801081838.16241.linux@rainbow-software.org> <4783C4A6.9060402@reed.com> <20080108185120.3ff7ed18@lxorguk.ukuu.org.uk> <4783CBD9.7020709@reed.com> <1199847162.7369.323.camel@bodhitayantram.eng.vmware.com> <47845972.9090803@zytor.com> <1199915614.7369.367.camel@bodhitayantram.eng.vmware.com> <47854916.4080703@reed.com> <1200015388.6192.22.camel@bodhitayantram.eng.vmware.com> <4786DD05.20804@keyaccess.nl> <47877ECD.9060408@reed.com> <20080111143748.35883ff7@lxorguk.ukuu.org.uk> <4787864C.1090101@reed.com> In-Reply-To: <4787864C.1090101@reed.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed 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: 27 David P. Reed wrote: > Alan Cox wrote: >>> bus abort on the LPC bus". More problematic is that I would think >>> some people might want to turn on the AMD feature that generates >>> machine checks if a bus timeout happens. The whole point of machine >>> checks is >> >> An ISA/LPC bus timeout is fulfilled by the bridge so doesn't cause an >> MCE. > Good possibility, but the documentation on HyperTransport suggests > otherwise, even for LPC bridges in this particular modern world of > AMD64. I might do the experiment someday to see if my LPC bridge is > implemented in a way that does or doesn't support enabling MCE's. Could > be different between Intel and AMD - I haven't had reason to pore over > the Intel chipset specs, since my poking into all this stuff has been > driven by my personal machine's issues, and it's not got any Intel > compatible parts. If you have a subtractive decoding bridge you will have completion on HT. -hpa -- 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/