Re: [RFC 03/10] virtio: Add virtio_queue_get_idx
From: Jason Wang <hidden>
Date: 2021-02-01 06:11:42
Also in:
qemu-devel
On 2021/1/30 上午4:54, Eugenio Pérez wrote:
quoted hunk
Signed-off-by: Eugenio Pérez <eperezma@redhat.com> --- include/hw/virtio/virtio.h | 2 ++ hw/virtio/virtio.c | 5 +++++ 2 files changed, 7 insertions(+)diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 9988c6d5c9..9013c03424 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h@@ -399,6 +399,8 @@ static inline bool virtio_device_disabled(VirtIODevice *vdev) return unlikely(vdev->disabled || vdev->broken); } +unsigned virtio_queue_get_idx(const VirtIODevice *vdev, const VirtQueue *vq); + bool virtio_legacy_allowed(VirtIODevice *vdev); bool virtio_legacy_check_disabled(VirtIODevice *vdev);diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index ebb780fb42..3d14b0ef74 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c@@ -500,6 +500,11 @@ void virtio_queue_set_notification(VirtQueue *vq, int enable) } } +unsigned virtio_queue_get_idx(const VirtIODevice *vdev, const VirtQueue *vq) +{ + return vq - vdev->vq; +}
It looks to me we had a dedicated index stored in VirtQueue: vq->queue_index. Thanks
+
int virtio_queue_ready(VirtQueue *vq)
{
return vq->vring.avail != 0;_______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization