From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54671) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1at3yp-000386-Kb for qemu-devel@nongnu.org; Wed, 20 Apr 2016 22:04:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1at3yk-0004E2-L7 for qemu-devel@nongnu.org; Wed, 20 Apr 2016 22:04:31 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48560) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1at3yk-0004Dx-FY for qemu-devel@nongnu.org; Wed, 20 Apr 2016 22:04:26 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 72DC085365 for ; Thu, 21 Apr 2016 02:04:25 +0000 (UTC) From: Fam Zheng Date: Thu, 21 Apr 2016 10:04:28 +0800 Message-Id: <1461204268-7643-1-git-send-email-famz@redhat.com> Subject: [Qemu-devel] [PATCH] virtio: Register host notifier handler as external List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: "Michael S. Tsirkin" , Paolo Bonzini , Stefan Hajnoczi , Max Reitz This ensures the bdrv_drained_begin() in block layer is effective and fixes launchpad bug #1570134. Signed-off-by: Fam Zheng --- hw/virtio/virtio.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index f745c4a..002c2c6 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1829,10 +1829,11 @@ void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign, bool set_handler) { if (assign && set_handler) { - event_notifier_set_handler(&vq->host_notifier, - virtio_queue_host_notifier_read); + aio_set_event_notifier(qemu_get_aio_context(), &vq->host_notifier, + true, virtio_queue_host_notifier_read); } else { - event_notifier_set_handler(&vq->host_notifier, NULL); + aio_set_event_notifier(qemu_get_aio_context(), &vq->host_notifier, + true, NULL); } if (!assign) { /* Test and clear notifier before after disabling event, -- 2.8.0