Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755283AbYJEMFx (ORCPT ); Sun, 5 Oct 2008 08:05:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753517AbYJEMFp (ORCPT ); Sun, 5 Oct 2008 08:05:45 -0400 Received: from rv-out-0506.google.com ([209.85.198.237]:14849 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753511AbYJEMFo (ORCPT ); Sun, 5 Oct 2008 08:05:44 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:mail-followup-to:references :mime-version:content-type:content-disposition:in-reply-to :user-agent; b=bEGxz4C1mbgXg27qPNUtA5GNvxEHphdPZsTVbwG25FvRBw8UVHkNyioV3beFOPu+7a JCv1V85t60TmKs7fLaTMhykab1dgXQMmhf8PNHHC1Sr7iVfdBaEe37M7bEeTtYvzPyJq szd3o24ZwPPTO0V4l/ZmBcmwzzbSv91mkA9vY= Date: Sun, 5 Oct 2008 20:05:36 +0800 From: Yan Li To: Pavel Machek Cc: Yan Li , linux-kernel@vger.kernel.org, Ingo Molnar , "H. Peter Anvin" , joerg.roedel@amd.com, rjmaomao@gmail.com, Yinghai Lu , Thomas Gleixner , nancydreaming@gmail.com Subject: Re: [PATCH 2/2] Suppress false "mtrr all empty" warning message when running as VMware guest Message-ID: <20081005120536.GA4543@yantp.cn.ibm.com> Mail-Followup-To: Pavel Machek , Yan Li , linux-kernel@vger.kernel.org, Ingo Molnar , "H. Peter Anvin" , joerg.roedel@amd.com, rjmaomao@gmail.com, Yinghai Lu , Thomas Gleixner , nancydreaming@gmail.com References: <48da36b3.0e0d6e0a.1c8e.fffff980@mx.google.com> <20081001200351.GA2121@ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081001200351.GA2121@ucw.cz> User-Agent: Mutt/1.5.17+20080114 (2008-01-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1133 Lines: 27 On Wed, Oct 01, 2008 at 10:03:51PM +0200, Pavel Machek wrote: > Hi! > > Subject says: Suppress false "mtrr all empty" .... would you explain > why is the message false? I believe it is very true, and points out > fact that VMWare virtualization fails to simulate MTRR-s. > > IMO VMWare should just fix their emulator. You are right, to some degree. Actually I have no strong evidence to support this either. Since KVM doesn't set MTRR, by hunch I thought VMware might having similar shortages. Also nothing bad can be observed after the system booted, so I guessed that warning was useless. Moreover, none other OSes (include old Linux kernels) is complaining about this in VMware so users of VMware might think 2.6.27 is buggy on this. Hope someone from VMware could clear this up. I think they are working on this problem followed this thread. I'd be happy to help. -- Li, Yan -- 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/