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| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-02-14 18:17:06 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-02-25 13:14:18 +0200 |
| commit | a1afb6062e779804d21b206c854425663a194be2 (patch) | |
| tree | 2b13cced3ab9f6a0698ec222bc7bf126553720f9 | |
| parent | 8b1fe1cedfde53c233c89938fca334ccaab26cff (diff) | |
| download | qemu-a1afb6062e779804d21b206c854425663a194be2.zip qemu-a1afb6062e779804d21b206c854425663a194be2.tar.gz qemu-a1afb6062e779804d21b206c854425663a194be2.tar.bz2 | |
virtio: add AioContext-specific function for host notifiers
This is used to register ioeventfd with a dataplane thread.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | hw/virtio/virtio.c | 16 | ||||
| -rw-r--r-- | include/hw/virtio/virtio.h | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index e365960..f419e7c 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1786,6 +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) { diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index c38a2fe..3ecdb20 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -249,6 +249,8 @@ void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign, EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq); void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign, bool set_handler); +void virtio_queue_aio_set_host_notifier_handler(VirtQueue *vq, AioContext *ctx, + bool assign, bool set_handler); void virtio_queue_notify_vq(VirtQueue *vq); void virtio_irq(VirtQueue *vq); VirtQueue *virtio_vector_first_queue(VirtIODevice *vdev, uint16_t vector); |