From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754158AbYIHRCZ (ORCPT ); Mon, 8 Sep 2008 13:02:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751646AbYIHRCO (ORCPT ); Mon, 8 Sep 2008 13:02:14 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:34081 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751458AbYIHRCN (ORCPT ); Mon, 8 Sep 2008 13:02:13 -0400 Date: Mon, 8 Sep 2008 18:01:25 +0100 From: Alan Cox To: Jeremy Fitzhardinge Cc: Nick Piggin , Alan Jenkins , Ingo Molnar , linux-kernel@vger.kernel.org, Hugh Dickens , "H. Peter Anvin" , =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= Subject: Re: [PATCH 0 of 3] Low memory corruption detection and workaround Message-ID: <20080908180125.7e7ef369@lxorguk.ukuu.org.uk> In-Reply-To: <48C5570B.7050109@goop.org> References: <48C3F237.1020503@tuffmail.co.uk> <200809082123.04780.nickpiggin@yahoo.com.au> <48C5570B.7050109@goop.org> X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.11; x86_64-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 On Mon, 08 Sep 2008 09:47:07 -0700 Jeremy Fitzhardinge wrote: > Nick Piggin wrote: > > Why not high memory as well? We put page tables there too... > > > > Well, the specific problem is that the BIOS appears to corrupt low > memory. It might corrupt other memory anywhere, but that would be > pretty pathologically evil. The assumption is that it gets away with it > because its memory that Windows doesn't otherwise use or something. Or that its hitting stuff that doesn't kill the OS... What has the vendor had to say and if they are not being helpful has anyone considered delivered them a report of the corruption and trace info by say registered post with a suggestion that they might now be knowingly exposing customers to unneccessary risk through their inaction ... Alan