From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57112) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z5BlX-0002KH-2T for qemu-devel@nongnu.org; Wed, 17 Jun 2015 07:44:23 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z5BlS-0005ea-5S for qemu-devel@nongnu.org; Wed, 17 Jun 2015 07:44:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50743) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z5BlS-0005eU-0k for qemu-devel@nongnu.org; Wed, 17 Jun 2015 07:44:18 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id 7C71CAB12E for ; Wed, 17 Jun 2015 11:44:17 +0000 (UTC) Message-ID: <55815D8C.3080904@redhat.com> Date: Wed, 17 Jun 2015 13:44:12 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <1434480849-23093-1-git-send-email-dgilbert@redhat.com> <558124BD.8010807@redhat.com> <20150617094829-mutt-send-email-mst@redhat.com> <55812BC4.3000600@redhat.com> <20150617121148-mutt-send-email-mst@redhat.com> <55815B06.5030508@redhat.com> <20150617114053.GG2122@work-vm> In-Reply-To: <20150617114053.GG2122@work-vm> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH] Migration compatibility for serial List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Dr. David Alan Gilbert" Cc: amit.shah@redhat.com, quintela@redhat.com, qemu-devel@nongnu.org, "Michael S. Tsirkin" On 17/06/2015 13:40, Dr. David Alan Gilbert wrote: > > Like Juan, I see where you're coming from. But it's a slippery slope, > > and upstream chose not to go down it. > > Whatever choice upstream may have made, that was a long time ago > and doesn't mean it can't change. My question really is: what has changed for this choice to not make sense anymore? Backward migration is not supported upstream except between minor releases. It is really the same as in RHEL, except that a minor release lasts a few years less. :) Paolo