From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40797) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYgA1-0002nR-W4 for qemu-devel@nongnu.org; Wed, 24 Feb 2016 15:35:50 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aYgA1-00053r-4M for qemu-devel@nongnu.org; Wed, 24 Feb 2016 15:35:49 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45869) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYgA0-00053j-W0 for qemu-devel@nongnu.org; Wed, 24 Feb 2016 15:35:49 -0500 Date: Wed, 24 Feb 2016 22:35:45 +0200 From: "Michael S. Tsirkin" Message-ID: <1456343639-3471-13-git-send-email-mst@redhat.com> References: <1456343639-3471-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1456343639-3471-1-git-send-email-mst@redhat.com> Subject: [Qemu-devel] [PULL 12/23] virtio: add AioContext-specific function for host notifiers List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Peter Maydell , Fam Zheng , Stefan Hajnoczi , Paolo Bonzini From: Paolo Bonzini 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 --- include/hw/virtio/virtio.h | 2 ++ hw/virtio/virtio.c | 16 ++++++++++++++++ 2 files changed, 18 insertions(+) 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); 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) { -- MST