From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: [Qemu-devel] [PATCH 0/10] Live migration for QEMU Date: Thu, 11 Sep 2008 09:12:18 -0500 Message-ID: <48C92742.8000002@us.ibm.com> References: <1220989802-13706-1-git-send-email-aliguori@us.ibm.com> <200809111213.m8BCDHaC012607@fjmscan502.ms.jp.fujitsu.com> <48C917F3.7040507@codemonkey.ws> <20080911133046.GE16427@shareable.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: qemu-devel@nongnu.org, Chris Wright , Uri Lublin , kvm@vger.kernel.org To: Jamie Lokier Return-path: Received: from e6.ny.us.ibm.com ([32.97.182.146]:44482 "EHLO e6.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755756AbYIKON3 (ORCPT ); Thu, 11 Sep 2008 10:13:29 -0400 Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236]) by e6.ny.us.ibm.com (8.13.8/8.13.8) with ESMTP id m8BEFuu9008224 for ; Thu, 11 Sep 2008 10:15:56 -0400 Received: from d01av02.pok.ibm.com (d01av02.pok.ibm.com [9.56.224.216]) by d01relay04.pok.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id m8BED86r167818 for ; Thu, 11 Sep 2008 10:13:08 -0400 Received: from d01av02.pok.ibm.com (loopback [127.0.0.1]) by d01av02.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m8BED7cb009962 for ; Thu, 11 Sep 2008 10:13:08 -0400 In-Reply-To: <20080911133046.GE16427@shareable.org> Sender: kvm-owner@vger.kernel.org List-ID: Jamie Lokier wrote: > Anthony Liguori wrote: > >>> It may be stupid question. >>> This migration is SMP aware? >>> >> Yes it is (SMP aware). >> > > Another stupid question from me. > > How stable is it likely to be between versions of QEMU and KVM? Once I merge the migration patches, I'll help Avi merge this into KVM. The whole point of this exercise is to merge the KVM bits into QEMU but in the process, I decided the bits needed to be written :-) > Also, > is there any hope of migrating between QEMU and KVM, so long as the > same device config is used, it's not SMP, etc.? > Yes. The primary reason that hasn't been possible in the past was because of how memory was migrated. The new memory migration protocol happens to make it easier to let QEMU and KVM be compatible. That wasn't an accident :-) Regards, Anthony Liguori > -- Jamie >