From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40936) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f1Mmo-0001cC-7g for qemu-devel@nongnu.org; Wed, 28 Mar 2018 21:55:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f1Mml-0005PB-6V for qemu-devel@nongnu.org; Wed, 28 Mar 2018 21:55:30 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:59566 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1f1Mml-0005Ll-0w for qemu-devel@nongnu.org; Wed, 28 Mar 2018 21:55:27 -0400 References: <20180328163630.48576-1-dgilbert@redhat.com> <20180328163630.48576-6-dgilbert@redhat.com> From: Jason Wang Message-ID: <780d6d45-84a6-34db-e65f-3d38a6d0ea66@redhat.com> Date: Thu, 29 Mar 2018 09:55:09 +0800 MIME-Version: 1.0 In-Reply-To: <20180328163630.48576-6-dgilbert@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [PATCH v2 5/6] e1000: Choose which set of props to migrate List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Dr. David Alan Gilbert (git)" , qemu-devel@nongnu.org, eswierk@skyportsystems.com, pbonzini@redhat.com Cc: peterx@redhat.com, quintela@redhat.com On 2018=E5=B9=B403=E6=9C=8829=E6=97=A5 00:36, Dr. David Alan Gilbert (git= ) wrote: > From: "Dr. David Alan Gilbert" > > When we're using the subsection we migrate both > the 'props' and 'tso_props' data; when we're not using > the subsection (to migrate to 2.11 or old machine types) we've > got to choose what to migrate in the main structure. > > If we're using the subsection migrate 'props' in the main structure. > If we're not using the subsection then migrate the last one > that changed, which gives behaviour similar to the old behaviour. > > But only after migration. Why not simply switch back to the old behavior=20 if migrate_tso_props if false? Thanks