From 31abe21f4f026171128e6fbafb40062ae1872bd5 Mon Sep 17 00:00:00 2001 From: Amit Shah Date: Tue, 27 Apr 2010 18:03:58 +0530 Subject: [PATCH] virtio-serial: save/load: Send target host connection status if different If the host connection to a port is closed on the destination machine after migration, whereas the connection was open on the source, the guest has to be informed of that. Similar for a host connection open on the destination. Signed-off-by: Amit Shah Signed-off-by: Anthony Liguori --- hw/virtio-serial-bus.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c index 5316ef626e..484dc945c4 100644 --- a/hw/virtio-serial-bus.c +++ b/hw/virtio-serial-bus.c @@ -395,6 +395,7 @@ static void virtio_serial_save(QEMUFile *f, void *opaque) */ qemu_put_be32s(f, &port->id); qemu_put_byte(f, port->guest_connected); + qemu_put_byte(f, port->host_connected); } } @@ -448,6 +449,7 @@ 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); @@ -460,6 +462,15 @@ static int virtio_serial_load(QEMUFile *f, void *opaque, int version_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;