From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34637) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aV0IX-0006pL-Kp for qemu-devel@nongnu.org; Sun, 14 Feb 2016 12:17:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aV0IV-00034j-Vq for qemu-devel@nongnu.org; Sun, 14 Feb 2016 12:17:25 -0500 Received: from mail-wm0-x243.google.com ([2a00:1450:400c:c09::243]:35804) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aV0IV-00034H-PJ for qemu-devel@nongnu.org; Sun, 14 Feb 2016 12:17:23 -0500 Received: by mail-wm0-x243.google.com with SMTP id g62so11957930wme.2 for ; Sun, 14 Feb 2016 09:17:23 -0800 (PST) Sender: Paolo Bonzini From: Paolo Bonzini Date: Sun, 14 Feb 2016 18:17:06 +0100 Message-Id: <1455470231-5223-4-git-send-email-pbonzini@redhat.com> In-Reply-To: <1455470231-5223-1-git-send-email-pbonzini@redhat.com> References: <1455470231-5223-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH 3/8] 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: stefanha@redhat.com, mst@redhat.com This is used to register ioeventfd with a dataplane thread. Signed-off-by: Paolo Bonzini --- 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 90f2545..3a5cca4 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1785,6 +1785,22 @@ 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 108cdb0..4ce01a1 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -248,6 +248,8 @@ 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); -- 1.8.3.1