Re: [PATCH v9 26/32] virtio_mmio: support the arg sizes of find_vqs()

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在 2022/4/6 上午11:43, Xuan Zhuo 写道:
Virtio MMIO support the new parameter sizes of find_vqs().

Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
---


Acked-by: Jason Wang <jasowang@xxxxxxxxxx>


  drivers/virtio/virtio_mmio.c | 8 ++++++--
  1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index 9d5a674bdeec..51cf51764a92 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -347,7 +347,7 @@ static void vm_del_vqs(struct virtio_device *vdev)
static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned index,
  				  void (*callback)(struct virtqueue *vq),
-				  const char *name, bool ctx)
+				  const char *name, u32 size, bool ctx)
  {
  	struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev);
  	struct virtio_mmio_vq_info *info;
@@ -382,8 +382,11 @@ static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned index,
  		goto error_new_virtqueue;
  	}
+ if (!size || size > num)
+		size = num;
+
  	/* Create the vring */
-	vq = vring_create_virtqueue(index, num, VIRTIO_MMIO_VRING_ALIGN, vdev,
+	vq = vring_create_virtqueue(index, size, VIRTIO_MMIO_VRING_ALIGN, vdev,
  				 true, true, ctx, vm_notify, callback, name);
  	if (!vq) {
  		err = -ENOMEM;
@@ -484,6 +487,7 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned nvqs,
  		}
vqs[i] = vm_setup_vq(vdev, queue_idx++, callbacks[i], names[i],
+				     sizes ? sizes[i] : 0,
  				     ctx ? ctx[i] : false);
  		if (IS_ERR(vqs[i])) {
  			vm_del_vqs(vdev);




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