Re: [PATCH v3 4/4] drm/virtio: Support virtgpu exported resources

[David Stevens <stevensd@chromium.org>]

> > +     if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_RESOURCE_UUID)) {
> > +             vgdev->has_resource_assign_uuid = true;
> > +     }
>
>
> Just a question: this relies on DMA bufs so I assume it is
> not really assumed to work when DMA API is bypassed, right?
> Rather than worry what does it mean, how about just
> disabling  this feature without PLATFORM_DMA for now?

By PLATFORM_DMA, do you mean CONFIG_DMA_SHARED_BUFFER? Virtio-gpu
depends on DRM, which selects that feature. So I think DMA bufs should
always be available when virtio-gpu is present.

-David