From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: [Qemu-devel] Re: [PATCH 2/3] qemu: make cirrus init value pci spec compliant Date: Sun, 11 Oct 2009 15:45:59 +0200 Message-ID: <20091011134559.GN16702@redhat.com> References: <20091008145241.GC12275@redhat.com> <4ACE0559.5040206@redhat.com> <20091008160623.GA13710@redhat.com> <4ACE0FC6.3050908@redhat.com> <20091008184011.GA6576@shareable.org> <20091011133626.GA10229@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Jamie Lokier , Avi Kivity , Anthony Liguori , "qemu-devel@nongnu.org" , kvm-devel To: "Michael S. Tsirkin" Return-path: Received: from mx1.redhat.com ([209.132.183.28]:43125 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757430AbZJKNqd (ORCPT ); Sun, 11 Oct 2009 09:46:33 -0400 Content-Disposition: inline In-Reply-To: <20091011133626.GA10229@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Sun, Oct 11, 2009 at 03:36:26PM +0200, Michael S. Tsirkin wrote: > > No, I think Avi was right the first time. > > > > Migrating from an older qemu will be fine at first, but at the next > > reset _following_ migration, it'll be running the old BIOS on a new > > qemu and fail. > > > > -- Jamie > > So after discussion with Gleb, it seems that what will happen > after migration to new qemu, old BIOS is shadowed, but memory > is already enabled. After reset, new BIOS will be shadowed > and it will enable memory. Makes sense? > I don't see how you made this conclusion after the discussion. What should happen is after migration old bios should be used until reboot. After reboot new bios should be used. What really happens today I don't know. -- Gleb.