Re: [PATCH v4 2/6] rust: helpers: Add bindings/wrappers for dma_resv_lock

[Alice Ryhl]

On Thu, Feb 19, 2026 at 03:40:20PM +0100, Danilo Krummrich wrote:
> On Fri Jan 30, 2026 at 3:24 PM CET, Alice Ryhl wrote:
> > From: Asahi Lina <lina+kernel@xxxxxxxxxxxxx>
> >
> > This is just for basic usage in the DRM shmem abstractions for implied
> > locking, not intended as a full DMA Reservation abstraction yet.
> >
> > Signed-off-by: Asahi Lina <lina+kernel@xxxxxxxxxxxxx>
> > Signed-off-by: Daniel Almeida <daniel.almeida@xxxxxxxxxxxxx>
> > Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
> > Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
> > Reviewed-by: Janne Grunau <j@xxxxxxxxxx>
> > Reviewed-by: Daniel Almeida <daniel.almeida@xxxxxxxxxxxxx>
> > Signed-off-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
> > ---
> > Taken from:
> > https://lore.kernel.org/all/20251202220924.520644-3-lyude@xxxxxxxxxx/
> > with __rust_helper added.
> > ---
> >  MAINTAINERS                     |  1 +
> >  rust/bindings/bindings_helper.h |  1 +
> >  rust/helpers/dma-resv.c         | 14 ++++++++++++++
> >  rust/helpers/helpers.c          |  1 +
> >  4 files changed, 17 insertions(+)
> >
> > diff --git a/MAINTAINERS b/MAINTAINERS
> > index 618becae72985b9dfdca8469ee48d4752fd0ca41..8d44728261ffa82fc36fa0c5df3b11a5bfb4339b 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -7467,6 +7467,7 @@ L:	rust-for-linux@xxxxxxxxxxxxxxx
> >  S:	Supported
> >  W:	https://rust-for-linux.com
> >  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core.git
> > +F:	rust/helpers/dma-resv.c
> >  F:	rust/helpers/dma.c
> >  F:	rust/helpers/scatterlist.c
> >  F:	rust/kernel/dma.rs
> 
> That's fine for me in general, but maybe the DMA BUFFER SHARING FRAMEWORK is
> probably the correct place. DMA BUFFER SHARING FRAMEWORK is also under the DRM
> umbrella, so we should also add it to the drm-rust entry as well.

Sumit, Christian, are you ok with listing this under DMA BUFFER SHARING
FRAMEWORK?

Alice