linux-kernel - Re: [PATCH 1/3] rust: enable `raw_ref

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Message-ID: <D8F3YBA8CJKP.1JGZ1QAD3SBY4@proton.me>
Date: Thu, 13 Mar 2025 11:39:34 +0000
From: Benno Lossin <benno.lossin@...ton.me>
To: Antonio Hickey <contact@...oniohickey.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>, Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>
Cc: Benno Lossin <y86-dev@...tonmai.com>, rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] rust: enable `raw_ref_op` feature

On Thu Mar 13, 2025 at 6:33 AM CET, Antonio Hickey wrote:
> Since Rust 1.82.0 the `raw_ref_op` feature is stable.
>
> By enabling this feature we can use `&raw place` and `&raw mut place`
> instead of using `addr_of!(place)` and `addr_of_mut!(place)` macros.
>
> This will allow us to reduce macro complexity, and improve consistency
> with existing reference syntax as `&raw`, `&raw mut` is very similar to
> `&`, `&mut` making it fit more naturally with other existing code.
>
> Suggested-by: Benno Lossin <y86-dev@...tonmai.com>

Please use this email instead: <benno.lossin@...ton.me>.

Thanks!

> Link: https://github.com/Rust-for-Linux/linux/issues/1148
> Signed-off-by: Antonio Hickey <contact@...oniohickey.com>

Reviewed-by: Benno Lossin <benno.lossin@...ton.me>

---
Cheers,
Benno

> ---
>  rust/kernel/lib.rs | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs
> index 398242f92a96..1d078f69bb19 100644
> --- a/rust/kernel/lib.rs
> +++ b/rust/kernel/lib.rs
> @@ -19,6 +19,8 @@
>  #![cfg_attr(not(CONFIG_RUSTC_HAS_COERCE_POINTEE), feature(unsize))]
>  #![feature(inline_const)]
>  #![feature(lint_reasons)]
> +// Stable in Rust 1.82
> +#![feature(raw_ref_op)]
>  // Stable in Rust 1.83
>  #![feature(const_maybe_uninit_as_mut_ptr)]
>  #![feature(const_mut_refs)]