From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51976) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZYqtH-0008Gt-VT for qemu-devel@nongnu.org; Mon, 07 Sep 2015 03:31:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZYqtE-00026K-QS for qemu-devel@nongnu.org; Mon, 07 Sep 2015 03:30:59 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43384) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZYqtE-000264-LC for qemu-devel@nongnu.org; Mon, 07 Sep 2015 03:30:56 -0400 Date: Mon, 7 Sep 2015 10:30:53 +0300 From: "Michael S. Tsirkin" Message-ID: <20150907102241-mutt-send-email-mst@redhat.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [Qemu-devel] virtio-1 related entry in 2.4 Changelog, please List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Maydell Cc: QEMU Developers On Thu, Sep 03, 2015 at 06:47:55PM +0100, Peter Maydell wrote: > Our changelog for QEMU 2.4 (http://wiki.qemu.org/ChangeLog/2.4) > currently has a line in it saying > " * FIXME: virtio 1" > > Could somebody familiar with the level of our virtio-1 support > in 2.4 please fix this, before everybody forgets exactly what > 2.4 did and didn't support? > > thanks > -- PMM I seem to have lost the wiki login/password. For virtio-pci, Virtio 1 mode can now be enabled by specifying disable-modern=false. To suppress the legacy interface and create a non-transitional device, specify disable-legacy=true additionally. All devices support this mode. This support is still experimental: it functions fine in normal usage and so should be appropriate for guest driver development, but there are known issues around migration, guest out of memory handling, and performance. When used with virtio 1, virtio blk no longer supports scsi command passthrough. Please use virtio scsi instead. -- MST