[PATCH v7 20/26] virtio_mmio: support the arg sizes of find_vqs()

Xuan Zhuo
2022-03-08T12:38:18Z

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

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
---
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 55d575f6ef2d..4d7cd8881282 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;
@@ -483,6 +486,7 @@ 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);
--
2.31.0