From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39027) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZviOi-0005TR-Ef for qemu-devel@nongnu.org; Mon, 09 Nov 2015 04:05:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZviOf-0007co-48 for qemu-devel@nongnu.org; Mon, 09 Nov 2015 04:05:56 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33932) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZviOe-0007cf-Vn for qemu-devel@nongnu.org; Mon, 09 Nov 2015 04:05:53 -0500 References: <1446747083-18205-1-git-send-email-dgilbert@redhat.com> <20151106034846.GC29481@in.ibm.com> <20151106090952.GA2459@work-vm> <20151106122222.GF2459@work-vm> <20151109041359.GC18558@voom.redhat.com> From: Paolo Bonzini Message-ID: <564061E3.2080303@redhat.com> Date: Mon, 9 Nov 2015 10:05:39 +0100 MIME-Version: 1.0 In-Reply-To: <20151109041359.GC18558@voom.redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v9 00/56] Postcopy implementation List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: David Gibson , "Dr. David Alan Gilbert" Cc: aarcange@redhat.com, yamahata@private.email.ne.jp, quintela@redhat.com, liang.z.li@intel.com, "qemu-devel@nongnu.org" , Bharata B Rao , luis@cs.umu.se, Bharata B Rao , "amit.shah@redhat.com" On 09/11/2015 05:13, David Gibson wrote: > Which makes me think it's a bit odd that we're not already getting > most of the htab data across during the precopy phase. Don't we > already delay entering the postcopy phase until precopy is > "complete" in the sense that the remaining non-postcopiable data is > below the downtime limit? I would have thought that would also > ensure we'd only have a reasonable number of remaining htab updates > for the package. You can enter postcopy at any time. In this case, Bharata is entering immediately after the beginning of migration, basically without doing any work in precopy mode. Paolo