From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: [PATCH] virtio-net: Fix save/load Date: Wed, 06 May 2009 08:46:57 -0500 Message-ID: <4A0194D1.60905@codemonkey.ws> References: <1232042731.20605.9.camel@bling> <4A013A75.9050405@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Alex Williamson , kvm-devel , Mark McLoughlin To: Avi Kivity Return-path: Received: from mail-qy0-f125.google.com ([209.85.221.125]:53352 "EHLO mail-qy0-f125.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753084AbZEFNyv (ORCPT ); Wed, 6 May 2009 09:54:51 -0400 Received: by qyk31 with SMTP id 31so204654qyk.33 for ; Wed, 06 May 2009 06:54:51 -0700 (PDT) In-Reply-To: <4A013A75.9050405@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Avi Kivity wrote: > Alex Williamson wrote: >> We can't rely on build switches to tell us if a save image >> includes a given field. We also need to save status since >> it's visible to the guest. Draw another line in the sand >> for broken save versions. The version number should always >> be updated when new values are saved and load should make >> an attempt to set reasonable defaults for lower version save >> images. >> > > I applied the the first part of this ancient patch. Can't tell from > the thread what the consensus is for the rest. Please don't bump the version number. If you do, you'll be incompatible with upstream QEMU. We have to coordinate version number changes or else we're going to guarantee that we break backwards compatibility down the road. Regards, Anthony Liguori