From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49714) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VZYkA-0002LL-5v for qemu-devel@nongnu.org; Fri, 25 Oct 2013 00:11:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VZYk1-0003Om-7i for qemu-devel@nongnu.org; Fri, 25 Oct 2013 00:11:26 -0400 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:44864) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VZYk0-0003Np-JB for qemu-devel@nongnu.org; Fri, 25 Oct 2013 00:11:17 -0400 Received: from /spool/local by e28smtp01.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 25 Oct 2013 09:41:11 +0530 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by d28dlp02.in.ibm.com (Postfix) with ESMTP id 5C5953940017 for ; Fri, 25 Oct 2013 09:40:47 +0530 (IST) Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r9P4B5p944630230 for ; Fri, 25 Oct 2013 09:41:05 +0530 Received: from d28av04.in.ibm.com (localhost [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id r9P4B7Ji011593 for ; Fri, 25 Oct 2013 09:41:08 +0530 Message-ID: <5269EF59.1080801@linux.vnet.ibm.com> Date: Fri, 25 Oct 2013 12:11:05 +0800 From: Lei Li MIME-Version: 1.0 References: <1382412341-1173-1-git-send-email-lilei@linux.vnet.ibm.com> <1382412341-1173-3-git-send-email-lilei@linux.vnet.ibm.com> <52692636.3080200@redhat.com> In-Reply-To: <52692636.3080200@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 02/17] QAPI: introduce magration capability unix_page_flipping List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: aarcange@redhat.com, aliguori@us.ibm.com, quintela@redhat.com, mdroth@linux.vnet.ibm.com, mrhines@linux.vnet.ibm.com, qemu-devel@nongnu.org, lagarcia@br.ibm.com, rcj@linux.vnet.ibm.com On 10/24/2013 09:52 PM, Paolo Bonzini wrote: > Il 22/10/2013 04:25, Lei Li ha scritto: >> +# @unix-page-flipping: If enabled, QEMU will support localhost migration. This >> +# feature allows live upgrade of a running QEMU instance by doing localhost >> +# migration with page flipping. It requires the source and destination >> +# are both on localhost. Disabled by default. (since 1.7) >> +# > If enabled, QEMU can optimize migration when the destination is a QEMU > process that runs on the same host as the source (as is the case for > live upgrade). If the migration transport is a Unix socket, QEMU will > flip RAM pages directly to the destination, so that memory is only > allocated twice for the source and destination processes. Disabled by > default. (since 1.8) I will update with this in next version, thanks. > Paolo > -- Lei