From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932091AbYEFTJW (ORCPT ); Tue, 6 May 2008 15:09:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757011AbYEFTJH (ORCPT ); Tue, 6 May 2008 15:09:07 -0400 Received: from terminus.zytor.com ([198.137.202.10]:36301 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752074AbYEFTJF (ORCPT ); Tue, 6 May 2008 15:09:05 -0400 Message-ID: <4820ACB5.9060009@zytor.com> Date: Tue, 06 May 2008 12:08:37 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.12 (X11/20080226) MIME-Version: 1.0 To: Yinghai Lu CC: Ingo Molnar , "Eric W. Biederman" , Thomas Gleixner , Andrew Morton , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] x86: fixed mtrr change WP to WB References: <200805041823.57198.yhlu.kernel@gmail.com> <200805061038.58023.yhlu.kernel@gmail.com> <200805061041.40047.yhlu.kernel@gmail.com> <482099E6.5060208@zytor.com> <86802c440805061124w630bc987k71c3c290fdfde773@mail.gmail.com> <4820A401.1040105@zytor.com> <86802c440805061134y21fbb2a3s872c41c522b9f49f@mail.gmail.com> <4820A6DF.7010607@zytor.com> <86802c440805061205lf312e02jb44318e97212d4e1@mail.gmail.com> In-Reply-To: <86802c440805061205lf312e02jb44318e97212d4e1@mail.gmail.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 Yinghai Lu wrote: >>> >> Then you would have to add a method to pass it into the kernel if you want >> it to be generally useful. > > but how about old stock kernel in RHEL3U9? > There is nothing you can do about those that will work on any platform. If you have knowledge of the firmware you can of course break those rules. -hpa