Re: [PATCH] gpu: Move DRM buddy allocator one level up

[Dave Airlie]

On Tue, 25 Nov 2025 at 17:45, Christian König <christian.koenig@xxxxxxx> wrote:
>
> On 11/25/25 00:44, Joel Fernandes wrote:
> > Move the DRM buddy allocator one level up so that it can be used by GPU
> > drivers (example, nova-core) that have usecases other than DRM (such as
> > VFIO vGPU support). Modify the API, structures and Kconfigs to use
> > "gpu_buddy" terminology. Adapt the drivers and tests to use the new API.
> >
> > The commit cannot be split due to bissectability, however no functional
> > change is intended. Verified by running K-UNIT tests and build tested
> > various configurations.
>
> Well such a change needs to be part of the patch set which actually starts to use it outside of drivers/gpu/drm.

I'm not sure it really makes sense yet to force that for this, since
the next patch would be just adding rust bindings to it, then a patch
to nova-core would be needed to use it, I'd rather not merge something
like this via the rust or nova trees as it breaks the principle of
least surprise.

Maybe this + rust bindings might be enough to justify it, but it
should be reviewable as a standalone idea.

Dave.