linux-kernel - Re: [PATCH v4] rust: kernel: add support for bits/genmask macros

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Message-Id: <BC968EEF-03CD-49A2-818D-08789791E461@collabora.com>
Date: Thu, 20 Mar 2025 10:50:12 -0300
From: Daniel Almeida <daniel.almeida@...labora.com>
To: Alexandre Courbot <acourbot@...dia.com>
Cc: 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>,
 Benno Lossin <benno.lossin@...ton.me>,
 Andreas Hindborg <a.hindborg@...nel.org>,
 Alice Ryhl <aliceryhl@...gle.com>,
 Trevor Gross <tmgross@...ch.edu>,
 Danilo Krummrich <dakr@...nel.org>,
 linux-kernel@...r.kernel.org,
 rust-for-linux@...r.kernel.org,
 Fiona Behrens <me@...enk.dev>
Subject: Re: [PATCH v4] rust: kernel: add support for bits/genmask macros

Hi Alex,

> Would it make sense to also have u16 and u8 variants? I guess one can
> always use genmask_u32 and then cast to the desired type though.

There’s no u16 and u8 variants because I did not think there would be users. 

I can add them otherwise, IMHO we should refrain from using casts when possible.

— Daniel