From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756280Ab3CMN0J (ORCPT ); Wed, 13 Mar 2013 09:26:09 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:19990 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755160Ab3CMN0H (ORCPT ); Wed, 13 Mar 2013 09:26:07 -0400 Message-ID: <51407E58.8020200@oracle.com> Date: Wed, 13 Mar 2013 09:25:44 -0400 From: Boris Ostrovsky User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130219 Thunderbird/17.0.3 MIME-Version: 1.0 To: Josh Boyer CC: "H. Peter Anvin" , Borislav Petkov , mingo@redhat.com, tglx@linutronix.de, konrad.wilk@oracle.com, rostedt@goodmis.org, gregkh@linuxfoundation.org, samu.kallio@aberdeencloud.com, kraman@redhat.com, xen-devel@lists.xen.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal References: <1362092149-32381-1-git-send-email-boris.ostrovsky@oracle.com> <20130228233720.GB17468@pd.tnic> <20130301000539.GA31649@hansolo.jdub.homelinux.org> <512FF331.5050008@zytor.com> <20130301003629.GG9767@pd.tnic> <20130301004211.GB31649@hansolo.jdub.homelinux.org> <512FFBC4.4070400@zytor.com> <20130301121444.GC31649@hansolo.jdub.homelinux.org> In-Reply-To: <20130301121444.GC31649@hansolo.jdub.homelinux.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/01/2013 07:14 AM, Josh Boyer wrote: > On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin wrote: >> On 02/28/2013 04:42 PM, Josh Boyer wrote: >>> On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov wrote: >>>> On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin wrote: >>>>>> I'll try to get someone to test this tomorrow. >>>> Btw, you'd need to apply that other patch too >>>> >>>> http://marc.info/?l=xen-devel&m=136206183814547&w=2 >>>> >>>> so that arch_flush_lazy_mmu_mode() has at least one caller on x86_64. >>> Yeah, we already have that applied. It stops crashes in xen >>> environments so we pulled it in as a bugfix. Thanks though! >>> >> Who are "we"? > Sorry, Fedora. That patch has a link to a bug in it. We applied the > patch for that bug. I'll apply Boris' patch on top and get the same > people to test it. Josh, have you had a chance to test this? -boris