The subject prefix should be lower case "vfio" to match the subsystem
commit style.
On Tue, Feb 10, 2026 at 11:39:54AM -0800, Zhiping Zhang wrote:
> diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
> index ac2329f24141..bff2f5f7e38d 100644
> --- a/include/uapi/linux/vfio.h
> +++ b/include/uapi/linux/vfio.h
> @@ -1501,6 +1501,8 @@ struct vfio_region_dma_range {
> struct vfio_device_feature_dma_buf {
> __u32 region_index;
> __u32 open_flags;
> + __u16 steering_tag;
> + __u8 ph;
> __u32 flags;
> __u32 nr_ranges;
> struct vfio_region_dma_range dma_ranges[] __counted_by(nr_ranges);
I don't think you can add fields to a uapi struct like this since it
breaks comptibility. Instead, I think you may be able to carve it out of
the "flags" field since it's currently reserved to be 0, so I guess it's
potentially available to define a new feature.
