This patchset implements the current proposal for virtio cross-device
resource sharing [1], with minor changes based on recent comments. It
is expected that this will be used to import virtio resources into the
virtio-video driver currently under discussion [2].
This patchset adds a new hook to dma-buf, for querying the dma-buf's
underlying virtio UUID. This hook is then plumbed through DRM PRIME
buffers, and finally implemented in virtgpu.
[1] https://markmail.org/thread/jsaoqy7phrqdcpqu
[2] https://markmail.org/thread/p5d3k566srtdtute
v2 -> v3 changes:
- Remove ifdefs.
- Simplify virtgpu_gem_prime_export as it can only be called once.
- Use virtio_gpu_vbuffer's objs field instead of abusing data_buf.
David Stevens (4):
dma-buf: add support for virtio exported objects
drm/prime: add support for virtio exported objects
virtio-gpu: add VIRTIO_GPU_F_RESOURCE_UUID feature
drm/virtio: Support virtgpu exported resources
drivers/dma-buf/dma-buf.c | 12 ++++++
drivers/gpu/drm/drm_prime.c | 23 +++++++++++
drivers/gpu/drm/virtio/virtgpu_drv.c | 3 ++
drivers/gpu/drm/virtio/virtgpu_drv.h | 18 +++++++++
drivers/gpu/drm/virtio/virtgpu_kms.c | 4 ++
drivers/gpu/drm/virtio/virtgpu_prime.c | 41 +++++++++++++++++--
drivers/gpu/drm/virtio/virtgpu_vq.c | 55 ++++++++++++++++++++++++++
include/drm/drm_drv.h | 10 +++++
include/linux/dma-buf.h | 18 +++++++++
include/uapi/linux/virtio_gpu.h | 19 +++++++++
10 files changed, 200 insertions(+), 3 deletions(-)
--
2.25.1.481.gfbce0eb801-goog
On Wed, Mar 11, 2020 at 08:20:00PM +0900, David Stevens wrote:
> This patchset implements the current proposal for virtio cross-device
> resource sharing [1], with minor changes based on recent comments. It
> is expected that this will be used to import virtio resources into the
> virtio-video driver currently under discussion [2].
>
> This patchset adds a new hook to dma-buf, for querying the dma-buf's
> underlying virtio UUID. This hook is then plumbed through DRM PRIME
> buffers, and finally implemented in virtgpu.
Looks all fine to me. We should wait for the virtio protocol update
(patch 3/4) being accepted into the virtio specification. When this is
done I'll go commit this to drm-misc-next.
cheers,
Gerd