From patchwork Tue Mar 23 14:30:17 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Shah X-Patchwork-Id: 48349 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 3B017B7BEE for ; Wed, 24 Mar 2010 01:45:14 +1100 (EST) Received: from localhost ([127.0.0.1]:59789 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Nu5Lz-00052e-5g for incoming@patchwork.ozlabs.org; Tue, 23 Mar 2010 10:45:11 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Nu5A4-0001TO-Th for qemu-devel@nongnu.org; Tue, 23 Mar 2010 10:32:53 -0400 Received: from [199.232.76.173] (port=35903 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Nu5A4-0001Ss-Do for qemu-devel@nongnu.org; Tue, 23 Mar 2010 10:32:52 -0400 Received: from Debian-exim by monty-python.gnu.org with spam-scanned (Exim 4.60) (envelope-from ) id 1Nu5A3-0001Yt-Am for qemu-devel@nongnu.org; Tue, 23 Mar 2010 10:32:52 -0400 Received: from mx1.redhat.com ([209.132.183.28]:28391) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1Nu5A2-0001Yn-VA for qemu-devel@nongnu.org; Tue, 23 Mar 2010 10:32:51 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o2NEWoWi030277 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 23 Mar 2010 10:32:50 -0400 Received: from localhost (vpn-235-214.phx2.redhat.com [10.3.235.214]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o2NEWlMg005201; Tue, 23 Mar 2010 10:32:49 -0400 From: Amit Shah To: qemu list Date: Tue, 23 Mar 2010 20:00:17 +0530 Message-Id: <1269354619-10201-8-git-send-email-amit.shah@redhat.com> In-Reply-To: <1269354619-10201-7-git-send-email-amit.shah@redhat.com> References: <1269354619-10201-1-git-send-email-amit.shah@redhat.com> <1269354619-10201-2-git-send-email-amit.shah@redhat.com> <1269354619-10201-3-git-send-email-amit.shah@redhat.com> <1269354619-10201-4-git-send-email-amit.shah@redhat.com> <1269354619-10201-5-git-send-email-amit.shah@redhat.com> <1269354619-10201-6-git-send-email-amit.shah@redhat.com> <1269354619-10201-7-git-send-email-amit.shah@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 X-detected-operating-system: by monty-python.gnu.org: Genre and OS details not recognized. Cc: Amit Shah , quintela@redhat.com, Gerd Hoffmann , "Michael S. Tsirkin" Subject: [Qemu-devel] [PATCH 7/9] virtio-serial-bus: Let the guest know of host connection changes after migration X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org If the host connection to a port is closed on the destination machine after migration, when the connection was open on the source, the host has to be informed of that. Similar for a host connection open on the destination. Signed-off-by: Amit Shah --- hw/virtio-serial-bus.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c index dd50f2d..6d12c10 100644 --- a/hw/virtio-serial-bus.c +++ b/hw/virtio-serial-bus.c @@ -408,6 +408,7 @@ static void virtio_serial_save(QEMUFile *f, void *opaque) QTAILQ_FOREACH(port, &s->ports, next) { qemu_put_be32s(f, &port->id); qemu_put_byte(f, port->guest_connected); + qemu_put_byte(f, port->host_connected); } } @@ -461,11 +462,21 @@ static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id) /* Items in struct VirtIOSerialPort */ for (i = 0; i < nr_active_ports; i++) { uint32_t id; + bool host_connected; id = qemu_get_be32(f); port = find_port_by_id(s, id); port->guest_connected = qemu_get_byte(f); + host_connected = qemu_get_byte(f); + if (host_connected != port->host_connected) { + /* + * We have to let the guest know of the host connection + * status change + */ + send_control_event(port, VIRTIO_CONSOLE_PORT_OPEN, + port->host_connected); + } } return 0; }