From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49011) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WiO9l-0000EO-B3 for qemu-devel@nongnu.org; Thu, 08 May 2014 09:14:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WiO9e-0006lN-DW for qemu-devel@nongnu.org; Thu, 08 May 2014 09:14:37 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49087) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WiO9e-0006lD-6E for qemu-devel@nongnu.org; Thu, 08 May 2014 09:14:30 -0400 Message-ID: <536B8332.9070705@redhat.com> Date: Thu, 08 May 2014 15:14:26 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <53693FA4.3000306@windriver.com> <5369D504.2070101@redhat.com> <536AB2EE.6010504@windriver.com> <20140508130231.GA24978@grmbl.mre> In-Reply-To: <20140508130231.GA24978@grmbl.mre> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] virtio-serial-pci very expensive during live migration List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Amit Shah , Chris Friesen Cc: qemu-devel@nongnu.org, armbru@redhat.com Il 08/05/2014 15:02, Amit Shah ha scritto: >> > I tried the patch below. Unfortunately it seems to cause qemu to crash. > This doesn't remove the memory_region_transaction_begin() and > _commit() from memory_region_add_eventfd(), which will still be > called. That's correct, transactions can be nested. Paolo