From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([140.186.70.92]:44077)
	by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <pl@dlh.net>)
	id 1RvYTq-0007VG-G8
	for qemu-devel@nongnu.org; Thu, 09 Feb 2012 13:12:27 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <pl@dlh.net>) id 1RvYTk-0007f8-JU
	for qemu-devel@nongnu.org; Thu, 09 Feb 2012 13:12:26 -0500
Received: from ssl.dlh.net ([91.198.192.8]:54113)
	by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <pl@dlh.net>)
	id 1RvYTk-0007f0-9y
	for qemu-devel@nongnu.org; Thu, 09 Feb 2012 13:12:20 -0500
Message-ID: <4F340C83.5050004@dlh.net>
Date: Thu, 09 Feb 2012 19:12:19 +0100
From: Peter Lieven <pl@dlh.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Subject: [Qemu-devel] qemu-kvm-1.0 regression with usb tablet after live
	migration
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: qemu-devel@nongnu.org, kvm@vger.kernel.org

Hi,

i recently started updating our VMs to qemu-kvm 1.0. Since that I see 
that the usb tablet device (used for as pointer device for accurate
mouse positioning) becomes unavailable after live migrating.
If I migrate a few times a Windows 7 VM reliable stops using
the USB tablet and fails back to PS/2 mouse.
If I do the same with qemu-kvm-0.12.5 with the very same VM its working 
fine.

Can anyone imagine what introduced this flaw?

Thanks,
Peter