diff options
Diffstat (limited to 'hw/virtio/virtio.c')
| -rw-r--r-- | hw/virtio/virtio.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 90f25451d0..08275a9848 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1162,7 +1162,7 @@ void virtio_irq(VirtQueue *vq) virtio_notify_vector(vq->vdev, vq->vector); } -static bool vring_notify(VirtIODevice *vdev, VirtQueue *vq) +bool virtio_should_notify(VirtIODevice *vdev, VirtQueue *vq) { uint16_t old, new; bool v; @@ -1187,7 +1187,7 @@ static bool vring_notify(VirtIODevice *vdev, VirtQueue *vq) void virtio_notify(VirtIODevice *vdev, VirtQueue *vq) { - if (!vring_notify(vdev, vq)) { + if (!virtio_should_notify(vdev, vq)) { return; } @@ -1677,6 +1677,7 @@ void virtio_init(VirtIODevice *vdev, const char *name, vdev->vmstate = qemu_add_vm_change_state_handler(virtio_vmstate_change, vdev); vdev->device_endian = virtio_default_endian(); + vdev->use_guest_notifier_mask = true; } hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev, int n) @@ -1785,6 +1786,22 @@ static void virtio_queue_host_notifier_read(EventNotifier *n) } } +void virtio_queue_aio_set_host_notifier_handler(VirtQueue *vq, AioContext *ctx, + bool assign, bool set_handler) +{ + if (assign && set_handler) { + aio_set_event_notifier(ctx, &vq->host_notifier, true, + virtio_queue_host_notifier_read); + } else { + aio_set_event_notifier(ctx, &vq->host_notifier, true, NULL); + } + if (!assign) { + /* Test and clear notifier before after disabling event, + * in case poll callback didn't have time to run. */ + virtio_queue_host_notifier_read(&vq->host_notifier); + } +} + void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign, bool set_handler) { |