On Tue, 2017-10-10 at 17:50 +0800, Tina Zhang wrote: > Add VFIO_DEVICE_QUERY_GFX_PLANE ioctl command to let user mode query > and > get the plan and its related information. This ioctl can be invoked > with: > 1) either flag DMABUF or REGION is set. Vendor driver returns success > and > the plane_info only when the specific kind of buffer is supported. > 2) flag PROBE is set with either DMABUF or REGION. Vendor driver > returns > success only when the specific kind of buffer is supported. > > The dma-buf's life cycle is handled by user mode and tracked by > kernel. > The returned fd in struct vfio_device_query_gfx_plane can be a new > fd or an old fd of a re-exported dma-buf. Host user mode can check > the > value of fd and to see if it needs to create new resource according > to > the new fd or just use the existed resource related to the old fd. Reviewed-by: Gerd Hoffmann <kraxel@xxxxxxxxxx> cheers, Gerd _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
