From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753169AbZEYJkt (ORCPT ); Mon, 25 May 2009 05:40:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752129AbZEYJkl (ORCPT ); Mon, 25 May 2009 05:40:41 -0400 Received: from one.firstfloor.org ([213.235.205.2]:54216 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752042AbZEYJkl (ORCPT ); Mon, 25 May 2009 05:40:41 -0400 Date: Mon, 25 May 2009 11:47:06 +0200 From: Andi Kleen To: Jan Beulich Cc: Andi Kleen , Tomasz Chmielewski , mingo@elte.hu, jeremy@goop.org, Alan , Gerd Hoffmann , LKML , jbarnes@virtuousgeek.org, "H. Peter Anvin" Subject: Re: [Xen-devel] Re: [GIT PULL] xen /proc/mtrr implementation Message-ID: <20090525094706.GX846@one.firstfloor.org> References: <4A1A59DD.7030101@wpkg.org> <20090525091530.GW846@one.firstfloor.org> <4A1A81770200007800002593@vpn.id2.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4A1A81770200007800002593@vpn.id2.novell.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 25, 2009 at 10:31:03AM +0100, Jan Beulich wrote: > >>> Andi Kleen 25.05.09 11:15 >>> > >To my knowledge the only CPUs with broken PAT are some very old Pentium > >Pros dating from back the time when PAT was new and noone used it. > >On those it should be disabled or the high bits not used. > > ??? See PentiumIII erratum E27. Thanks for the correction. It's still all pretty old CPUs. -Andi -- ak@linux.intel.com -- Speaking for myself only.