From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754261Ab1GNK0j (ORCPT ); Thu, 14 Jul 2011 06:26:39 -0400 Received: from mo-p00-ob.rzone.de ([81.169.146.162]:49787 "EHLO mo-p00-ob.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754200Ab1GNK0i (ORCPT ); Thu, 14 Jul 2011 06:26:38 -0400 X-RZG-AUTH: :P2EQZWCpfu+qG7CngxMFH1J+zrwiavkK6tmQaLfmxtMZ80VwmRNV67U= X-RZG-CLASS-ID: mo00 Date: Thu, 14 Jul 2011 12:26:28 +0200 From: Olaf Hering To: Jan Beulich Cc: Ian.Campbell@citrix.com, konrad.wilk@oracle.com, keir@xen.org, xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org Subject: Re: [Xen-devel] [PATCH] xen: update machine_to_phys_order on resume Message-ID: <20110714102628.GA9157@aepfle.de> References: <4E1DB9C70200007800072DCC@nat28.tlf.novell.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <4E1DB9C70200007800072DCC@nat28.tlf.novell.com> User-Agent: Mutt/1.5.21.rev5535 (2011-07-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 13, Jan Beulich wrote: > >>> Ian Campbell 07/13/11 11:12 AM >>> > >It's not so much an objection to this patch but this issue seems to have > >been caused by Xen cset 20892:d311d1efc25e which looks to me like a > >subtle ABI breakage for guests. Perhaps we should introduce a feature > >flag to indicate that a guest can cope with the m2p changing size over > >migration like this? > > Indeed - migration was completely beyond my consideration when > submitting this. A feature flag seems the right way to go to me. I will prepare a patch for a new feature flag. Olaf