Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758918AbXLLVg0 (ORCPT ); Wed, 12 Dec 2007 16:36:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751328AbXLLVgS (ORCPT ); Wed, 12 Dec 2007 16:36:18 -0500 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:46149 "EHLO the-village.bc.nu" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751081AbXLLVgQ (ORCPT ); Wed, 12 Dec 2007 16:36:16 -0500 Date: Wed, 12 Dec 2007 21:29:22 +0000 From: Alan Cox To: "H. Peter Anvin" Cc: Rene Herman , "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. Message-ID: <20071212212922.2cf5339b@the-village.bc.nu> In-Reply-To: <47604EA4.50504@zytor.com> 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> <20071212210143.48721a41@the-village.bc.nu> <47604EA4.50504@zytor.com> X-Mailer: Claws Mail 2.10.0 (GTK+ 2.10.14; i386-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 634 Lines: 12 > One wonders if it does some SMM trick to capture port 0x80 writes and > attempt to haul them off for debugging; it almost sounds like some kind > of debugging code got let out into the field. Not implausible. We've got a bug I've been dealing with where a vendor left debug stuff enabled via the parallel port and which clearly "escaped" from the test environment to the BIOS proper. -- 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/