linux-kernel - Re: [PATCH 2/2] MAINTAINERS: add rust bindings entry for bitmap API

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Message-ID: <20250225031905.c63mg6hr4uddncbk@vireshk-i7>
Date: Tue, 25 Feb 2025 08:49:05 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Yury Norov <yury.norov@...il.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
	Danilo Krummrich <dakr@...hat.com>,
	"Rafael J. Wysocki" <rafael@...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 <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Stephen Boyd <sboyd@...nel.org>, Nishanth Menon <nm@...com>,
	Manos Pitsidianakis <manos.pitsidianakis@...aro.org>,
	Erik Schilling <erik.schilling@...aro.org>,
	Alex Bennée <alex.bennee@...aro.org>,
	Joakim Bech <joakim.bech@...aro.org>, Rob Herring <robh@...nel.org>,
	Christoph Hellwig <hch@....de>, Jason Gunthorpe <jgg@...dia.com>,
	John Hubbard <jhubbard@...dia.com>, linux-pm@...r.kernel.org,
	rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] MAINTAINERS: add rust bindings entry for bitmap API

On 24-02-25, 18:39, Yury Norov wrote:
> From: "Yury Norov [NVIDIA]" <yury.norov@...il.com>
> 
> This entry enumerates bitmap and related APIs listed in BITMAP API entry
> that rust requires but cannot use directly (i.e. inlined functions and
> macros).
> 
> The "Rust kernel policy" (https://rust-for-linux.com/rust-kernel-policy)
> document describes the special status of rust support:
> 
>   "Exceptionally, for Rust, a subsystem may allow to temporarily
>    break Rust code."
> 
> Accordingly, the following policy applies to all interfaces under the
> BITMAP API entry that are used in rust codebase, including those not
> listed explicitly here.
> 
> Bitmap developers do their best to keep the API stable. When API or
> user-visible behavior needs to be changed such that it breaks rust,
> bitmap and rust developers collaborate as follows:
>  - bitmap developers don't consider rust bindings as a blocker for the
>    API change;
>  - bindings maintainer (me) makes sure that kernel build doesn't break
>    with CONFIG_RUST=y. This implies fixes in the binding layer, but not
>    in rust codebase;
>  - rust developers adopt new version of API in their codebase and remove
>    unused bindings timely.
> 
> CC: Danilo Krummrich <dakr@...hat.com>
> CC: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
> CC: Viresh Kumar <viresh.kumar@...aro.org>
> Signed-off-by: Yury Norov [NVIDIA] <yury.norov@...il.com>
> ---
>  MAINTAINERS | 5 +++++
>  1 file changed, 5 insertions(+)

Reviewed-by: Viresh Kumar <viresh.kumar@...aro.org>

-- 
viresh