From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932174Ab1BCPbg (ORCPT ); Thu, 3 Feb 2011 10:31:36 -0500 Received: from terminus.zytor.com ([198.137.202.10]:48170 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755984Ab1BCPbe (ORCPT ); Thu, 3 Feb 2011 10:31:34 -0500 Message-ID: <4D4AC996.4070307@zytor.com> Date: Thu, 03 Feb 2011 07:28:22 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc14 Thunderbird/3.1.7 MIME-Version: 1.0 To: Pavel Machek CC: Tejun Heo , Ingo Molnar , "Ahmed S. Darwish" , Thomas Gleixner , Ingo Molnar , X86-ML , Tony Luck , Dave Jones , Andrew Morton , Randy Dunlap , Willy Tarreau , Willy Tarreau , Dirk Hohndel , Dirk.Hohndel@intel.com, IDE-ML , LKML , Linus Torvalds , Peter Zijlstra , Fr?d?ric Weisbecker , Borislav Petkov , Arjan van de Ven Subject: Re: [PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk upon panic References: <20110125134748.GA10051@laptop> <20110125140948.GA26762@elte.hu> <20110125150834.GD27510@htj.dyndns.org> <20110203143644.GA4085@ucw.cz> In-Reply-To: <20110203143644.GA4085@ucw.cz> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/03/2011 06:36 AM, Pavel Machek wrote: > > Could we read the log area, first, verify it contains signature, write > it back? > Pavel Yes, but that doesn't guarantee no data corruption caused by handing over from one driver to another. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.