linux/rust
Gary Guo ef605a433d rust: mem: add AsRepr and AsReprMut
Some API like atomics and I/O operate on primitives only; therefore other
types would need to converted to these primitive first. Add two traits
`AsRepr` and `AsReprMut` to indicate that the type can be turned into a
primitive for these operations.

`T: AsRepr` means that `&T` can be viewed as `&T::Repr` and thus it needs
to support transmutability in one direction. `T: AsReprMut` means that
`&mut T` can be viewed as `&mut T::Repr` and thus it needs to support
bi-directional transmutability.

To avoid duplicating implementations, all repr types are normalized to
unsigned integers.

Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://patch.msgid.link/20260901-typed_register-v4-3-5552b1d59525@garyguo.net
[ Fix grammar in from_repr_unchecked() documentation, rephrase confusing
  safety comment, use rustdoc links for Self, fix backtick formatting in
  comments and use consistent 'must' wording in safety sections.
  - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-09-06 13:39:44 +02:00
..
bindings Char/Misc/IIO/etc driver update for 7.3-rc1 2026-08-25 09:38:50 -07:00
helpers Char/Misc/IIO/etc driver update for 7.3-rc1 2026-08-25 09:38:50 -07:00
kernel rust: mem: add AsRepr and AsReprMut 2026-09-06 13:39:44 +02:00
macros rust: io: register: reimplement as proc macro 2026-09-03 20:25:54 +02:00
pin-init rust: pin-init: add #[inline] to small functions 2026-08-05 11:36:18 +01:00
proc-macro2 rust: proc-macro2: rebuild if the version text changes 2026-01-23 10:44:27 +01:00
quote rust: quote: add README.md 2025-11-24 17:15:43 +01:00
syn rust: syn: add README.md 2025-11-24 17:15:47 +01:00
uapi Char/Misc/IIO/etc driver update for 7.3-rc1 2026-08-25 09:38:50 -07:00
zerocopy rust: zerocopy: update to v0.8.54 2026-07-11 13:46:02 +02:00
zerocopy-derive rust: zerocopy: update to v0.8.54 2026-07-11 13:46:02 +02:00
.gitignore
.kunitconfig
bindgen_parameters rust/bindgen_parameters: Mark s390 types as opaque to prevent repr conflicts 2026-06-10 16:25:13 +02:00
build_error.rs
compiler_builtins.rs rust: Make __udivdi3() and __umoddi3() panic 2026-07-31 16:57:48 +05:30
exports.c kbuild: rust: provide an option to inline C helpers into Rust 2026-03-30 02:03:52 +02:00
ffi.rs rust: replace CStr with core::ffi::CStr 2025-10-22 07:47:27 +02:00
Makefile Rust fixes for v7.3 2026-08-30 09:47:39 -07:00