From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755132AbYJECHB (ORCPT ); Sat, 4 Oct 2008 22:07:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753187AbYJECGx (ORCPT ); Sat, 4 Oct 2008 22:06:53 -0400 Received: from terminus.zytor.com ([198.137.202.10]:39711 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752812AbYJECGw (ORCPT ); Sat, 4 Oct 2008 22:06:52 -0400 Message-ID: <48E8209F.3010204@zytor.com> Date: Sat, 04 Oct 2008 19:04:15 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Yinghai Lu CC: Ingo Molnar , Thomas Gleixner , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/3] x86: mtrr_cleanup: first 1M should be coverred in var mtrrs References: <1223157033-30217-1-git-send-email-yhlu.kernel@gmail.com> <1223157033-30217-2-git-send-email-yhlu.kernel@gmail.com> <48E80E60.8080106@zytor.com> <86802c440810041849g421ff524pf987f6c872e1d12a@mail.gmail.com> <48E81DED.7050902@zytor.com> <86802c440810041859s3695ff66v1833193f737551c8@mail.gmail.com> In-Reply-To: <86802c440810041859s3695ff66v1833193f737551c8@mail.gmail.com> Content-Type: text/plain; charset=UTF-8; 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: > On Sat, Oct 4, 2008 at 6:52 PM, H. Peter Anvin wrote: > >> There are some systems which, apparently, don't have RAM there. Don't ask >> me how or why. > > very old system or > very new system only have super big cache? > Very new system. That's all I know. Don't know if they actually shipped, but it caused a lot of problems and I recommended to the OEM that they fix that. -hpa