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[Qemu-devel] [PATCH 3/8] virtio: add AioContext-specific function for ho
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 3/8] virtio: add AioContext-specific function for host notifiers |
Date: |
Sun, 14 Feb 2016 18:17:06 +0100 |
This is used to register ioeventfd with a dataplane thread.
Signed-off-by: Paolo Bonzini <address@hidden>
---
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
- [Qemu-devel] [PATCH 0/8] virtio: allow migration with dataplane, Paolo Bonzini, 2016/02/14
- [Qemu-devel] [PATCH 1/8] block-migration: acquire AioContext as necessary, Paolo Bonzini, 2016/02/14
- [Qemu-devel] [PATCH 5/8] virtio-blk: fix "disabled data plane" mode, Paolo Bonzini, 2016/02/14
- [Qemu-devel] [PATCH 2/8] vring: make vring_enable_notification return void, Paolo Bonzini, 2016/02/14
- [Qemu-devel] [PATCH 3/8] virtio: add AioContext-specific function for host notifiers,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 4/8] virtio: export vring_notify as virtio_should_notify, Paolo Bonzini, 2016/02/14
- [Qemu-devel] [PATCH 6/8] virtio-blk: do not use vring in dataplane, Paolo Bonzini, 2016/02/14
- [Qemu-devel] [PATCH 7/8] virtio-scsi: do not use vring in dataplane, Paolo Bonzini, 2016/02/14
- [Qemu-devel] [PATCH 8/8] vring: remove, Paolo Bonzini, 2016/02/14