virtio_vdpa: support the arg sizes of find_vqs()

Virtio vdpa support the new parameter sizes of find_vqs().

Signed-off-by: Bo Liu <liubo03@inspur.com>
Message-Id: <20220810085151.7251-1-liubo03@inspur.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
index 832d2c5..9bc4d11 100644 (file)
--- a/drivers/virtio/virtio_vdpa.c
+++ b/drivers/virtio/virtio_vdpa.c
@@ -131,7 +131,7 @@ static irqreturn_t virtio_vdpa_virtqueue_cb(void *private)
 static struct virtqueue *
 virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index,
                     void (*callback)(struct virtqueue *vq),
-                    const char *name, bool ctx)
+                    const char *name, u32 size, bool ctx)
 {
        struct virtio_vdpa_device *vd_dev = to_virtio_vdpa_device(vdev);
        struct vdpa_device *vdpa = vd_get_vdpa(vdev);
@@ -168,14 +168,17 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index,
                goto error_new_virtqueue;
        }
 
+       if (!size || size > max_num)
+               size = max_num;
+
        if (ops->get_vq_num_min)
                min_num = ops->get_vq_num_min(vdpa);
 
-       may_reduce_num = (max_num == min_num) ? false : true;
+       may_reduce_num = (size == min_num) ? false : true;
 
        /* Create the vring */
        align = ops->get_vq_align(vdpa);
-       vq = vring_create_virtqueue(index, max_num, align, vdev,
+       vq = vring_create_virtqueue(index, size, align, vdev,
                                    true, may_reduce_num, ctx,
                                    virtio_vdpa_notify, callback, name);
        if (!vq) {
@@ -285,9 +288,9 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
                        continue;
                }
 
-               vqs[i] = virtio_vdpa_setup_vq(vdev, queue_idx++,
-                                             callbacks[i], names[i], ctx ?
-                                             ctx[i] : false);
+               vqs[i] = virtio_vdpa_setup_vq(vdev, queue_idx++, callbacks[i],
+                                                 names[i], sizes ? sizes[i] : 0,
+                                                 ctx ? ctx[i] : false);
                if (IS_ERR(vqs[i])) {
                        err = PTR_ERR(vqs[i]);
                        goto err_setup_vq;