Re: [Qemu-devel] [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