This is to add a new ioctl RESOURCE_GET_LAYOUT to virtio-gpu to get the information about how the host has actually allocated the buffer. It is implemented to query the stride of linear buffer for dGPU prime on guest VM, related mesa mr: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23896
Daniel Stone (1): drm/virtio: Implement RESOURCE_GET_LAYOUT ioctl Julia Zhang (1): drm/virtio: Modify RESOURCE_GET_LAYOUT ioctl drivers/gpu/drm/virtio/virtgpu_drv.c | 1 + drivers/gpu/drm/virtio/virtgpu_drv.h | 22 ++++++++- drivers/gpu/drm/virtio/virtgpu_ioctl.c | 66 ++++++++++++++++++++++++++ drivers/gpu/drm/virtio/virtgpu_kms.c | 8 +++- drivers/gpu/drm/virtio/virtgpu_vq.c | 63 ++++++++++++++++++++++++ include/uapi/drm/virtgpu_drm.h | 21 ++++++++ include/uapi/linux/virtio_gpu.h | 30 ++++++++++++ 7 files changed, 208 insertions(+), 3 deletions(-) -- 2.34.1
