diff options
Diffstat (limited to 'hw/virtio-serial-bus.c')
| -rw-r--r-- | hw/virtio-serial-bus.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c index 2ca97a90fe..09e22aa44a 100644 --- a/hw/virtio-serial-bus.c +++ b/hw/virtio-serial-bus.c @@ -848,10 +848,16 @@ VirtIODevice *virtio_serial_init(DeviceState *dev, uint32_t max_nr_ports) /* Add a queue for guest to host transfers for port 0 (backward compat) */ vser->ovqs[0] = virtio_add_queue(vdev, 128, handle_output); + /* TODO: host to guest notifications can get dropped + * if the queue fills up. Implement queueing in host, + * this might also make it possible to reduce the control + * queue size: as guest preposts buffers there, + * this will save 4Kbyte of guest memory per entry. */ + /* control queue: host to guest */ - vser->c_ivq = virtio_add_queue(vdev, 16, control_in); + vser->c_ivq = virtio_add_queue(vdev, 32, control_in); /* control queue: guest to host */ - vser->c_ovq = virtio_add_queue(vdev, 16, control_out); + vser->c_ovq = virtio_add_queue(vdev, 32, control_out); for (i = 1; i < vser->bus->max_nr_ports; i++) { /* Add a per-port queue for host to guest transfers */ |