Re: [Qemu-block] [PATCH V2 02/11] virtio: convert to use DMA api

[Jason Wang]

On 2016年11月04日 03:46, Michael S. Tsirkin wrote:

@@ -244,6 +245,7 @@ int virtio_queue_empty(VirtQueue *vq)
>  static void virtqueue_unmap_sg(VirtQueue *vq, const VirtQueueElement *elem,
>                                 unsigned int len)
>  {
>+    AddressSpace *dma_as = virtio_get_dma_as(vq->vdev);
>      unsigned int offset;
>      int i;

Can't we use

        vdev->dma_as

here?

I'd like to avoid query on data path.

Same in most other places below.

Will use vdev->dma_as in next version.

Thanks