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Message-ID: <87jz6uq9sm.fsf@kernel.org>
Date: Tue, 06 May 2025 13:05:13 +0200
From: Andreas Hindborg <a.hindborg@...nel.org>
To: Miguel Ojeda <ojeda@...nel.org>
Cc: 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 <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>,
	Tamir Duberstein <tamird@...il.com>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Matthew Wilcox <willy@...radead.org>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [GIT PULL] Rust xarray for v6.16

Hi Miguel,

Please pull these changes to enable access to the xarray data structure
from rust.

The following changes since commit 9c32cda43eb78f78c73aee4aa344b777714e259b:

  Linux 6.15-rc3 (2025-04-20 13:43:47 -0700)

are available in the Git repository at:

  https://github.com/rust-for-linux/linux.git tags/rust-xarray-for-v6.16

for you to fetch changes up to fa616196fbea12462107774fb6a1908c95f71cf0:

  MAINTAINERS: add entry for Rust XArray API (2025-05-01 11:37:59 +0200)


Best regards,
Andreas Hindborg

----------------------------------------------------------------
Rust xarray API for v6.16

Introduce Rust support for the `xarray` data structure:

 - Add a rust abstraction for the `xarray` data structure. This abstraction
   allows rust code to leverage the `xarray` to store types that implement
   `ForeignOwnable`. This support is a dependency for memory backing feature of
   the rust null block driver, which is waiting to be merged.

 - Set up an entry in MAINTAINERS for the xarray rust support. Patches will go
   to the new rust xarray tree and then via the rust subsystem tree for now.

`kernel` crate:

 - Allow `ForeignOwnable` to carry information about the pointed-to type. This
   helps asserting alignment requirements for the pointer passed to the foreign
   language.

----------------------------------------------------------------
Tamir Duberstein (3):
      rust: types: add `ForeignOwnable::PointedTo`
      rust: xarray: Add an abstraction for XArray
      MAINTAINERS: add entry for Rust XArray API

 MAINTAINERS                     |  11 ++
 rust/bindings/bindings_helper.h |   6 +
 rust/helpers/helpers.c          |   1 +
 rust/helpers/xarray.c           |  28 ++++
 rust/kernel/alloc/kbox.rs       |  38 +++---
 rust/kernel/lib.rs              |   1 +
 rust/kernel/miscdevice.rs       |  10 +-
 rust/kernel/pci.rs              |   2 +-
 rust/kernel/platform.rs         |   2 +-
 rust/kernel/sync/arc.rs         |  21 +--
 rust/kernel/types.rs            |  46 ++++---
 rust/kernel/xarray.rs           | 275 ++++++++++++++++++++++++++++++++++++++++
 12 files changed, 392 insertions(+), 49 deletions(-)
 create mode 100644 rust/helpers/xarray.c
 create mode 100644 rust/kernel/xarray.rs


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