--- a/hw/virtio-serial-bus.c	2010-02-09 00:41:21.000000000 -0600

+++ b/hw/virtio-serial-bus.c	2010-02-09 00:07:13.000000000 -0600

@@ -68,7 +68,7 @@ static VirtIOSerialPort *find_port_by_vq

 static bool use_multiport(VirtIOSerial *vser)

 {

-    return vser->vdev.features & (1 << VIRTIO_CONSOLE_F_MULTIPORT);

+    return vser->vdev.guest_features & (1 << VIRTIO_CONSOLE_F_MULTIPORT);

 }

 static size_t write_to_port(VirtIOSerialPort *port,

@@ -333,9 +333,11 @@ static void handle_input(VirtIODevice *v

 {

 }

-static uint32_t get_features(VirtIODevice *vdev)

+static uint32_t get_features(VirtIODevice *vdev, uint32_t features)

 {

-    return 1 << VIRTIO_CONSOLE_F_MULTIPORT;

+    features |= (1 << VIRTIO_CONSOLE_F_MULTIPORT);

+

+    return features;

 }

 /* Guest requested config info */