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| author | Xuan Zhuo <xuanzhuo@linux.alibaba.com> | 2022-08-01 14:38:33 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-08-11 04:06:39 -0400 |
| commit | e1d6a423ea1867a3a84f12a99981f036acb8f354 (patch) | |
| tree | f9e1bf1517435c3c3e29cb0a8c63a6c8544aa771 /drivers/virtio | |
| parent | 198fa7be96e52bc89c9e8a7e1c3b9e059ff203a0 (diff) | |
| download | linux-e1d6a423ea1867a3a84f12a99981f036acb8f354.tar.bz2 | |
virtio_ring: split: extract the logic of attach vring
Separate the logic of attach vring, subsequent patches will call it
separately.
virtqueue_vring_init_split() completes the initialization of other
variables of vring split. We can directly use
vq->split = *vring_split to complete attach.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220801063902.129329-14-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index e456cc16ea2a..d0df887c3ada 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -957,6 +957,15 @@ static void virtqueue_vring_init_split(struct vring_virtqueue_split *vring_split } } +static void virtqueue_vring_attach_split(struct vring_virtqueue *vq, + struct vring_virtqueue_split *vring_split) +{ + vq->split = *vring_split; + + /* Put everything in free lists. */ + vq->free_head = 0; +} + static int vring_alloc_state_extra_split(struct vring_virtqueue_split *vring_split) { struct vring_desc_state_split *state; @@ -1067,8 +1076,6 @@ static struct virtqueue *vring_create_virtqueue_split( return NULL; } - to_vvq(vq)->split.queue_dma_addr = vring_split.queue_dma_addr; - to_vvq(vq)->split.queue_size_in_bytes = vring_split.queue_size_in_bytes; to_vvq(vq)->we_own_ring = true; return vq; @@ -2317,26 +2324,16 @@ static struct virtqueue *__vring_new_virtqueue(unsigned int index, if (virtio_has_feature(vdev, VIRTIO_F_ORDER_PLATFORM)) vq->weak_barriers = false; - vq->split.queue_dma_addr = 0; - vq->split.queue_size_in_bytes = 0; - - vq->split.vring = vring_split->vring; - err = vring_alloc_state_extra_split(vring_split); if (err) { kfree(vq); return NULL; } - /* Put everything in free lists. */ - vq->free_head = 0; - - vq->split.desc_state = vring_split->desc_state; - vq->split.desc_extra = vring_split->desc_extra; - virtqueue_vring_init_split(vring_split, vq); virtqueue_init(vq, vring_split->vring.num); + virtqueue_vring_attach_split(vq, vring_split); spin_lock(&vdev->vqs_list_lock); list_add_tail(&vq->vq.list, &vdev->vqs); |