From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753177Ab0I1Pf2 (ORCPT ); Tue, 28 Sep 2010 11:35:28 -0400 Received: from terminus.zytor.com ([198.137.202.10]:53464 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751063Ab0I1Pf0 (ORCPT ); Tue, 28 Sep 2010 11:35:26 -0400 Message-ID: <4CA20B21.7060809@zytor.com> Date: Tue, 28 Sep 2010 08:34:57 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100907 Fedora/3.1.3-1.fc13 Thunderbird/3.1.3 MIME-Version: 1.0 To: Avi Kivity CC: Alexander Graf , x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Joerg Roedel Subject: Re: [PATCH] x86, nmi: workaround sti; hlt race vs nmi; intr References: <1284913699-14986-1-git-send-email-avi@redhat.com> <4CA057EA.7000609@redhat.com> <768A5DC0-131A-4BC8-ADDD-044D8169545E@suse.de> <61284934-1AD3-4F7A-9488-D46FCEE9B753@suse.de> <4CA06147.7080805@redhat.com> <4CA06373.5030501@redhat.com> <4CA112D1.2020004@zytor.com> <4CA1AC50.7000801@redhat.com> In-Reply-To: <4CA1AC50.7000801@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/28/2010 01:50 AM, Avi Kivity wrote: > > Personally I think the safer route is to take the patch. There are > other processors besides Intel and AMD and we can't test all of them, > not to mention various emulators and virtual machine monitors out there. > Speaking for the smoltering crater that used to be *Transmeta*, I'm (from memory) quite certain they blocked NMI and that this was intentional behavior. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.