From a1afb6062e779804d21b206c854425663a194be2 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Sun, 14 Feb 2016 18:17:06 +0100 Subject: [PATCH] virtio: add AioContext-specific function for host notifiers This is used to register ioeventfd with a dataplane thread. Signed-off-by: Paolo Bonzini Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Reviewed-by: Fam Zheng Acked-by: Stefan Hajnoczi --- hw/virtio/virtio.c | 16 ++++++++++++++++ include/hw/virtio/virtio.h | 2 ++ 2 files changed, 18 insertions(+) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index e365960bd7..f419e7cb57 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 c38a2fef04..3ecdb20729 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); -- 2.11.4.GIT