linux-kernel - Re: [PATCH v4 04/20] rust: add new `num` module with useful integer operations

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Message-ID: <CANiq72nQwxqeRGWBW2WSHijUKLs4c26UGQvJFjt-_SpnJJaaYQ@mail.gmail.com>
Date: Thu, 22 May 2025 10:44:49 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.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>, David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, Daniel Almeida <daniel.almeida@...labora.com>, 
	John Hubbard <jhubbard@...dia.com>, Ben Skeggs <bskeggs@...dia.com>, 
	Joel Fernandes <joelagnelf@...dia.com>, Timur Tabi <ttabi@...dia.com>, 
	Alistair Popple <apopple@...dia.com>, linux-kernel@...r.kernel.org, 
	rust-for-linux@...r.kernel.org, nouveau@...ts.freedesktop.org, 
	dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v4 04/20] rust: add new `num` module with useful integer operations

On Thu, May 22, 2025 at 6:01 AM Alexandre Courbot <acourbot@...dia.com> wrote:
>
> Either that, or we enable `#![feature(const_trait_impl)]`. I just tried
> and with it we could indeed define and implement `NumExt` as const,
> which looks like the cleanest way to do this to me.

Hmm... I think that one is actively being worked on, with a possible
syntax change in the works. We would need to speak to upstream Rust to
see when we could reasonably stat to use it, and consider the older
compilers (e.g. if the syntax changes).

Cheers,
Miguel