From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755977AbaD1NFW (ORCPT ); Mon, 28 Apr 2014 09:05:22 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:50067 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755446AbaD1NFT (ORCPT ); Mon, 28 Apr 2014 09:05:19 -0400 Date: Mon, 28 Apr 2014 09:04:24 -0400 From: Konrad Rzeszutek Wilk To: "H. Peter Anvin" Cc: Boris Ostrovsky , Andrew Lutomirski , "H. Peter Anvin" , Linux Kernel Mailing List , Linus Torvalds , Ingo Molnar , Alexander van Heukelum , Borislav Petkov , Arjan van de Ven , Brian Gerst , Alexandre Julliard , Andi Kleen , Thomas Gleixner Subject: Re: [PATCH] x86-64: espfix for 64-bit mode *PROTOTYPE* Message-ID: <20140428130424.GB2860@phenom.dumpdata.com> References: <1398120472-6190-1-git-send-email-hpa@linux.intel.com> <535714A1.9080502@linux.intel.com> <53571A7D.8050702@zytor.com> <5357CD0B.5050003@oracle.com> <5357F0A0.6040909@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5357F0A0.6040909@zytor.com> User-Agent: Mutt/1.5.21 (2010-09-15) 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 Wed, Apr 23, 2014 at 09:56:00AM -0700, H. Peter Anvin wrote: > On 04/23/2014 07:24 AM, Boris Ostrovsky wrote: > >> > >> Konrad - I really could use some help figuring out what needs to be done > >> for this not to break Xen. > > > > This does break Xen PV: > > > > I know it does. This is why I asked for help. This week is chaotic for me but I taking a stab at it. Should have something by the end of the week on top of your patch. > > This is fundamentally the problem with PV and *especially* the way Xen > PV was integrated into Linux: it acts as a development brake for native > hardware. Fortunately, Konrad has been quite responsive to that kind of > problems, which hasn't always been true of the Xen community in the past. Thank you for such kind words! I hope that in Chicago you will be have a chance to meet other folks that are involved in Xen and formulate a similar opinion of them. Cheers! > > -hpa >