From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34812) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WJN0E-0003FK-2K for Qemu-devel@nongnu.org; Fri, 28 Feb 2014 07:57:30 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WJN05-0006KS-Mp for Qemu-devel@nongnu.org; Fri, 28 Feb 2014 07:57:22 -0500 Received: from mail-qc0-x232.google.com ([2607:f8b0:400d:c01::232]:60239) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WJN05-0006KJ-Ek for Qemu-devel@nongnu.org; Fri, 28 Feb 2014 07:57:13 -0500 Received: by mail-qc0-f178.google.com with SMTP id i8so642900qcq.9 for ; Fri, 28 Feb 2014 04:57:13 -0800 (PST) Sender: Paolo Bonzini Message-ID: <531087A2.7070604@redhat.com> Date: Fri, 28 Feb 2014 13:57:06 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: <53107E2E.10201@bytemark.co.uk> In-Reply-To: <53107E2E.10201@bytemark.co.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] AMD Opteron 6276 to Intel Xeon E5645 live migration failure List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Nick Thomas , "Qemu-devel@nongnu.org" Cc: kvm@vger.kernel.org Il 28/02/2014 13:16, Nick Thomas ha scritto: > I'd love to get this working, but I'm a little ignorant on where to > begin, or even if it's possible at all. Are these CPUs just too old, or > is a fixup missing in qemu (or kvm)? It's the latter (in kvm). Note that for migration to work, especially for such different models, you have to disable CPU features that aren't present in both models. In general the way to do this is to add "-cpu". I'd start debugging with "-cpu kvm64" on both sides. Paolo