From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753076AbaHTWA1 (ORCPT ); Wed, 20 Aug 2014 18:00:27 -0400 Received: from terminus.zytor.com ([198.137.202.10]:54563 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752816AbaHTWA0 (ORCPT ); Wed, 20 Aug 2014 18:00:26 -0400 Message-ID: <53F51A3C.1040707@zytor.com> Date: Wed, 20 Aug 2014 16:59:24 -0500 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.7.0 MIME-Version: 1.0 To: One Thousand Gnomes , jgross@suse.com CC: stefan.bader@canonical.com, toshi.kani@hp.com, linux-kernel@vger.kernel.org, xen-devel@lists.xensource.com, konrad.wilk@oracle.com, ville.syrjala@linux.intel.com, x86@kernel.org Subject: Re: [PATCH RFC 0/3] x86: Full support of PAT References: <1408454745-32358-1-git-send-email-jgross@suse.com> <20140820130511.771aeafa@alan.etchedpixels.co.uk> In-Reply-To: <20140820130511.771aeafa@alan.etchedpixels.co.uk> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/20/2014 07:05 AM, One Thousand Gnomes wrote: > Doing this stuff for Xen also IMHO makes no sense at all. We shouldn't > have a kernel full of crap to deal with Xen-isms. We already *have* a kernel full of crap to deal with Xen-isms. We screwed that pooch some 10 years ago. > IFF it means the changes can also implement a mix of four PAT entries > on Pentium-M or earlier CPUs with PAT errata, and the full PAT on > processors without errata then IMHO it becomes a whole world more > interesting. That is one of the wins, indeed, as well as handle pre-PAT processors. -hpa