Commit e1dfaa33 authored by Antonio Hickey's avatar Antonio Hickey Committed by Miguel Ojeda
Browse files

rust: enable `raw_ref_op` feature 



Since Rust 1.82.0 the `raw_ref_op` feature is stable [1].

By enabling this feature we can use `&raw const place` and
`&raw mut place` instead of using `addr_of!(place)` and
`addr_of_mut!(place)` macros.

Allowing us to reduce macro complexity, and improve consistency
with existing reference syntax as `&raw const`, `&raw mut` are
similar to `&`, `&mut` making it fit more naturally with other
existing code.

Suggested-by: default avatarBenno Lossin <benno.lossin@proton.me>
Link: https://github.com/Rust-for-Linux/linux/issues/1148
Link: https://blog.rust-lang.org/2024/10/17/Rust-1.82.0.html#native-syntax-for-creating-a-raw-pointer

 [1]
Signed-off-by: default avatarAntonio Hickey <contact@antoniohickey.com>
Reviewed-by: default avatarBenno Lossin <benno.lossin@proton.me>
Reviewed-by: default avatarAndreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: default avatarTamir Duberstein <tamird@gmail.com>
Link: https://lore.kernel.org/r/20250320020740.1631171-2-contact@antoniohickey.com


[ Removed dashed line change as discussed. Added Link to the explanation
  of the feature in the Rust 1.82.0 release blog post. - Miguel ]
Signed-off-by: default avatarMiguel Ojeda <ojeda@kernel.org>
parent 4e72a62e

rust/kernel/lib.rs

+2 −0
Original line number Diff line number Diff line
@@ -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)]

scripts/Makefile.build

+1 −1
Original line number Diff line number Diff line
@@ -226,7 +226,7 @@ $(obj)/%.lst: $(obj)/%.c FORCE 
# Compile Rust sources (.rs)

# ---------------------------------------------------------------------------



rust_allowed_features := asm_const,asm_goto,arbitrary_self_types,lint_reasons

rust_allowed_features := asm_const,asm_goto,arbitrary_self_types,lint_reasons,raw_ref_op



# `--out-dir` is required to avoid temporaries being created by `rustc` in the

# current working directory, which may be not accessible in the out-of-tree