From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42471) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cisln-0008WV-GG for qemu-devel@nongnu.org; Tue, 28 Feb 2017 20:09:32 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cislk-0001vW-CH for qemu-devel@nongnu.org; Tue, 28 Feb 2017 20:09:31 -0500 Received: from [45.249.212.188] (port=2947 helo=dggrg02-dlp.huawei.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1cislj-0001v8-Oq for qemu-devel@nongnu.org; Tue, 28 Feb 2017 20:09:28 -0500 References: <1452169208-840-1-git-send-email-zhang.zhanghailiang@huawei.com> <577B1238.7040605@huawei.com> <577B8BA7.6010001@huawei.com> <20160818155636.l46t4ha65eybnnhe@redhat.com> <57B7F948.9040701@huawei.com> <58B4D6EA.5050804@huawei.com> <20170228161404.GL5816@redhat.com> From: Hailiang Zhang Message-ID: <58B61F29.3090203@huawei.com> Date: Wed, 1 Mar 2017 09:08:57 +0800 MIME-Version: 1.0 In-Reply-To: <20170228161404.GL5816@redhat.com> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [RFC 00/13] Live memory snapshot based on userfaultfd List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Andrea Arcangeli Cc: xuquan8@huawei.com, Christian Pinto , Juan Quintela , dgilbert@redhat.com, peter.huangpeng@huawei.com, Baptiste Reynal , qemu list , "Huangweidong (C)" , colo-ft@hotmail.com On 2017/3/1 0:14, Andrea Arcangeli wrote: > Hello, > > On Tue, Feb 28, 2017 at 09:48:26AM +0800, Hailiang Zhang wrote: >> Yes, for current implementing of live snapshot, it supports tcg, >> but does not support kvm mode, the reason i have mentioned above, >> if you try to implement it, i think you need to start from userfaultfd >> supporting KVM. There is scenario for it, But I'm blocked by other things >> these days. I'm glad to discuss with you if you planed to do it. > > Yes, there were other urgent userfaultfd features needed by QEMU and > CRIU queued for merging (hugetlbfs/shmem/non-cooperative support) and > they're all included upstream now. Now that such work is finished, > fixing the WP support to work with KVM and to provide full accuracy > will be the next thing to do. > Great, looking forward to it. thanks. > Thanks, > Andrea > > . >