linux-kernel - Re: [PATCH v4 0/3] Batch 2 of rust gem shmem work

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Message-ID: <e163b636e7c13bfee8cb623f60fa75ce0d6cd029.camel@redhat.com>
Date: Fri, 12 Sep 2025 19:11:06 -0400
From: Lyude Paul <lyude@...hat.com>
To: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
	rust-for-linux@...r.kernel.org
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
 Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
 Björn Roy Baron	 <bjorn3_gh@...tonmail.com>, Benno
 Lossin <lossin@...nel.org>, Andreas Hindborg	 <a.hindborg@...nel.org>,
 Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross	 <tmgross@...ch.edu>,
 Danilo Krummrich <dakr@...nel.org>, Sumit Semwal	
 <sumit.semwal@...aro.org>, Christian König	
 <christian.koenig@....com>, "open list:DMA BUFFER SHARING 
 ""FRAMEWORK:Keyword:\\bdma_(?:buf|fence|resv)\\b"	
 <linux-media@...r.kernel.org>, "moderated list:DMA BUFFER SHARING 
 ""FRAMEWORK:Keyword:\\bdma_(?:buf|fence|resv)\\b"	
 <linaro-mm-sig@...ts.linaro.org>
Subject: Re: [PATCH v4 0/3] Batch 2 of rust gem shmem work

JFYI, after talking with Alice Rhyl we figured since we're not going to be
getting a user of these bindings into the kernel in time for rc6 that it made
more sense to just merge the two C-side patches into drm-misc-next instead of
drm-rust-next.

I've pushed those two patches to drm-misc-next, and am going to wait until
we've addressed Christian's concerns before looking into pushing the dma_buf
stub bindings.

On Thu, 2025-09-11 at 18:57 -0400, Lyude Paul wrote:
> Now that we're getting close to reaching the finish line for upstreaming
> the rust gem shmem bindings, we've got another batch of patches that
> have been reviewed and can be safely pushed to drm-rust-next
> independently of the rest of the series.
> 
> These patches of course apply against the drm-rust-next branch, and are
> part of the gem shmem series, the latest version of which can be found
> here:
> 
> https://patchwork.freedesktop.org/series/146465/
> 
> Lyude Paul (3):
>   drm/gem/shmem: Extract drm_gem_shmem_init() from
>     drm_gem_shmem_create()
>   drm/gem/shmem: Extract drm_gem_shmem_release() from
>     drm_gem_shmem_free()
>   rust: Add dma_buf stub bindings
> 
>  drivers/gpu/drm/drm_gem_shmem_helper.c | 98 ++++++++++++++++++--------
>  include/drm/drm_gem_shmem_helper.h     |  2 +
>  rust/kernel/dma_buf.rs                 | 40 +++++++++++
>  rust/kernel/lib.rs                     |  1 +
>  4 files changed, 111 insertions(+), 30 deletions(-)
>  create mode 100644 rust/kernel/dma_buf.rs
> 
> 
> base-commit: cf4fd52e323604ccfa8390917593e1fb965653ee

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat

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