From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NCwSE-00028c-T5 for qemu-devel@nongnu.org; Tue, 24 Nov 2009 09:33:19 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NCwSA-00026e-SC for qemu-devel@nongnu.org; Tue, 24 Nov 2009 09:33:18 -0500 Received: from [199.232.76.173] (port=34531 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NCwSA-00026X-Jv for qemu-devel@nongnu.org; Tue, 24 Nov 2009 09:33:14 -0500 Received: from mail-yx0-f188.google.com ([209.85.210.188]:56677) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NCwSA-0004ui-Ap for qemu-devel@nongnu.org; Tue, 24 Nov 2009 09:33:14 -0500 Received: by yxe26 with SMTP id 26so5531442yxe.4 for ; Tue, 24 Nov 2009 06:33:13 -0800 (PST) Message-ID: <4B0BEEA7.60006@codemonkey.ws> Date: Tue, 24 Nov 2009 08:33:11 -0600 From: Anthony Liguori MIME-Version: 1.0 References: <4B0952C9.9010803@redhat.com> <4B095D86.700@codemonkey.ws> <4B09F0CA.3060705@codemonkey.ws> <1258983457-sup-5031@blackpad.lan.raisama.net> <4B0AA202.2050001@codemonkey.ws> <20091124142811.GP2405@redhat.com> In-Reply-To: <20091124142811.GP2405@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Michael S. Tsirkin" Cc: Paolo Bonzini , Eduardo Habkost , qemu-devel Michael S. Tsirkin wrote: > It's very easy: if their guest runs fine on the old qemu, > it should be safe to migrate there. > "Runs fine" is a qualitative statement. There is no way for qemu to know whether a guest runs fine or not. There is no way that we can make that statement either. It has to be something that is controlled higher in the stack. Regards, Anthony Liguori