linux-kernel - [PATCH -next v7 0/2] rust: Add CList and GPU buddy allocator bindings

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Message-Id: <20260206004110.1914814-1-joelagnelf@nvidia.com>
Date: Thu,  5 Feb 2026 19:41:08 -0500
From: Joel Fernandes <joelagnelf@...dia.com>
To: linux-kernel@...r.kernel.org
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Jonathan Corbet <corbet@....net>,
	Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	Tvrtko Ursulin <tursulin@...ulin.net>,
	Huang Rui <ray.huang@....com>,
	Matthew Auld <matthew.auld@...el.com>,
	Matthew Brost <matthew.brost@...el.com>,
	Lucas De Marchi <lucas.demarchi@...el.com>,
	Thomas Hellström <thomas.hellstrom@...ux.intel.com>,
	Helge Deller <deller@....de>,
	Danilo Krummrich <dakr@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	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>,
	Trevor Gross <tmgross@...ch.edu>,
	John Hubbard <jhubbard@...dia.com>,
	Alistair Popple <apopple@...dia.com>,
	Timur Tabi <ttabi@...dia.com>,
	Edwin Peer <epeer@...dia.com>,
	Alexandre Courbot <acourbot@...dia.com>,
	Andrea Righi <arighi@...dia.com>,
	Andy Ritger <aritger@...dia.com>,
	Zhi Wang <zhiw@...dia.com>,
	Balbir Singh <balbirs@...dia.com>,
	Philipp Stanner <phasta@...nel.org>,
	Elle Rhumsaa <elle@...thered-steel.dev>,
	Daniel Almeida <daniel.almeida@...labora.com>,
	joel@...lfernandes.org,
	nouveau@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	rust-for-linux@...r.kernel.org,
	linux-doc@...r.kernel.org,
	amd-gfx@...ts.freedesktop.org,
	intel-gfx@...ts.freedesktop.org,
	intel-xe@...ts.freedesktop.org,
	linux-fbdev@...r.kernel.org,
	Joel Fernandes <joelagnelf@...dia.com>
Subject: [PATCH -next v7 0/2] rust: Add CList and GPU buddy allocator bindings

This series provides Rust bindings infrastructure needed for nova-core
memory management:

1. CList module for interfacing with C circular linked lists, required
   for iterating over GPU buddy allocator blocks.

2. GPU buddy allocator bindings for physical memory management in
   nova-core.

These patches are based on the RFC v6 nova-core memory management series:
https://lore.kernel.org/all/20260120204303.3229303-1-joelagnelf@nvidia.com/

Main changes from v6 are based on suggestions by Gary and Dave.

This patch requires the DRM buddy code movement patch as a prerequisite:
https://lore.kernel.org/all/20260206003451.1914130-1-joelagnelf@nvidia.com/

Rebased on linux-next commit 9845cf73f7db ("Add linux-next specific files
for 20260205").

Joel Fernandes (2):
  rust: clist: Add support to interface with C linked lists
  rust: gpu: Add GPU buddy allocator bindings

 MAINTAINERS                     |   7 +
 drivers/gpu/Kconfig             |   7 +
 rust/bindings/bindings_helper.h |  11 +
 rust/helpers/gpu.c              |  23 ++
 rust/helpers/helpers.c          |   2 +
 rust/helpers/list.c             |  21 ++
 rust/kernel/clist.rs            | 315 +++++++++++++++++++
 rust/kernel/gpu/buddy.rs        | 530 ++++++++++++++++++++++++++++++++
 rust/kernel/gpu/mod.rs          |   5 +
 rust/kernel/lib.rs              |   4 +
 10 files changed, 925 insertions(+)
 create mode 100644 rust/helpers/gpu.c
 create mode 100644 rust/helpers/list.c
 create mode 100644 rust/kernel/clist.rs
 create mode 100644 rust/kernel/gpu/buddy.rs
 create mode 100644 rust/kernel/gpu/mod.rs

-- 
2.34.1