From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757533AbaCRSxX (ORCPT ); Tue, 18 Mar 2014 14:53:23 -0400 Received: from terminus.zytor.com ([198.137.202.10]:52539 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757486AbaCRSxV (ORCPT ); Tue, 18 Mar 2014 14:53:21 -0400 Message-ID: <53288FF5.3010001@zytor.com> Date: Tue, 18 Mar 2014 11:27:01 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: Sarah Newman , George Dunlap , Jan Beulich CC: Linux Kernel Mailing List , "xen-devel@lists.xen.org" , Ingo Molnar , David Vrabel , Thomas Gleixner , Konrad Rzeszutek Wilk Subject: Re: [Xen-devel] [PATCHv1] x86: don't schedule when handling #NM exception References: <1394468273-13676-1-git-send-email-david.vrabel@citrix.com> <531DEB11.2070709@zytor.com> <531DF319.6010800@citrix.com> <53266841.6090308@prgmr.com> <1ebfa80c-4a68-4602-bc98-e5d5f0893998@email.android.com> <5327291D.60009@zytor.com> <532739810200007800124E85@nat28.tlf.novell.com> <53272D79.5050605@eu.citrix.com> <53288DD1.9060809@prgmr.com> In-Reply-To: <53288DD1.9060809@prgmr.com> X-Enigmail-Version: 1.6 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 03/18/2014 11:17 AM, Sarah Newman wrote: > > Should or has there been a review of the current xen PVABI to look for any other such deviations? > It would be a very good thing to do. First of all, the PVABI needs to be **documented** because without that there is no hope. I would like to specifically call out the efforts of Konrad Wilk in this general area, but he obviously doesn't scale, either... The other aspect is to get rid of as much of the PVABI as possible. HPV is a big step in that direction, getting rid of some of the most invasive hooks, but I think we can minimize further. -hpa