linux-kernel - [PATCH 0/5] Make Rust Binder build as a module

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Message-ID: <20260205-binder-tristate-v1-0-dfc947c35d35@google.com>
Date: Thu, 05 Feb 2026 10:51:25 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Carlos Llamas <cmllamas@...gle.com>
Cc: Alexander Viro <viro@...iv.linux.org.uk>, Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, 
	Paul Moore <paul@...l-moore.com>, James Morris <jmorris@...ei.org>, 
	"Serge E. Hallyn" <serge@...lyn.com>, Andrew Morton <akpm@...ux-foundation.org>, 
	Dave Chinner <david@...morbit.com>, Qi Zheng <zhengqi.arch@...edance.com>, 
	Roman Gushchin <roman.gushchin@...ux.dev>, Muchun Song <muchun.song@...ux.dev>, 
	David Hildenbrand <david@...nel.org>, Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, 
	"Liam R. Howlett" <Liam.Howlett@...cle.com>, Vlastimil Babka <vbabka@...e.cz>, 
	Mike Rapoport <rppt@...nel.org>, Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko <mhocko@...e.com>, 
	Miguel Ojeda <ojeda@...nel.org>, 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>, 
	Danilo Krummrich <dakr@...nel.org>, kernel-team@...roid.com, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org, 
	linux-mm@...ck.org, rust-for-linux@...r.kernel.org, 
	Alice Ryhl <aliceryhl@...gle.com>
Subject: [PATCH 0/5] Make Rust Binder build as a module

Currently Binder only builds as built-in module, but in downstream
Android branches we update the build system to make Rust Binder
buildable as a module. The same situation applies to distros, as there
are many distros that enable Binder for support of apps such as
waydroid, which would benefit from the ability to build Binder as a
module.

Note that although the situation in Android may be temporary - once we
no longer have a C implementation, it makes sense for Rust Binder to be
built-in. But that will both take a while, and in any case, distros
enabling Binder will benefit from it being a module even if Android goes
back to built-in.

Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>
---
Alice Ryhl (5):
      export file_close_fd and task_work_add
      security: export binder symbols
      mm: export zap_page_range_single and list_lru_add/del
      ipc: export init_ipc_ns and put_ipc_ns
      rust_binder: mark ANDROID_BINDER_IPC_RUST tristate

 drivers/android/Kconfig | 2 +-
 fs/file.c               | 1 +
 ipc/msgutil.c           | 1 +
 ipc/namespace.c         | 1 +
 kernel/task_work.c      | 1 +
 mm/list_lru.c           | 2 ++
 mm/memory.c             | 1 +
 security/security.c     | 4 ++++
 8 files changed, 12 insertions(+), 1 deletion(-)
---
base-commit: 4df29fb5bcebeea28b29386dec18355949512ca1
change-id: 20260204-binder-tristate-729ac021adca

Best regards,
-- 
Alice Ryhl <aliceryhl@...gle.com>