linux-kernel - Re: [PATCH v3 0/4] rust: add `TryFrom` and `Into` derive macros

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Message-Id: <DF74FEXHESCV.3L0KB1DLDMFTV@nvidia.com>
Date: Thu, 25 Dec 2025 16:32:18 +0900
From: "Alexandre Courbot" <acourbot@...dia.com>
To: "Jesung Yang" <y.j3ms.n@...il.com>, "Alexandre Courbot"
 <acourbot@...dia.com>, "Miguel Ojeda" <ojeda@...nel.org>, "Boqun Feng"
 <boqun.feng@...il.com>, "Gary Guo" <gary@...yguo.net>,
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, "Benno Lossin"
 <lossin@...nel.org>, "Andreas Hindborg" <a.hindborg@...nel.org>, "Alice
 Ryhl" <aliceryhl@...gle.com>, "Trevor Gross" <tmgross@...ch.edu>, "Danilo
 Krummrich" <dakr@...nel.org>
Cc: <rust-for-linux@...r.kernel.org>, <nouveau@...ts.freedesktop.org>,
 <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 0/4] rust: add `TryFrom` and `Into` derive macros

On Wed Dec 24, 2025 at 12:59 PM JST, Jesung Yang wrote:
> This patch series introduces derive macros for the `TryFrom` and `Into`
> traits.
>
> Primary updates in v3:
> - Adopt `syn` for improved macro parsing.
> - Allow `kernel::num::Bounded` to be specified in helper attributes,
>   enabling the generation of `TryFrom` and `Into` implementations for
>   types with restricted bit ranges as required by the nova-core [1].
> - Add compile-time overflow assertion to ensure that enum discriminants
>   fit within the types being converted to or from, preventing silent
>   overflows.
>
> Note: 1015+ insertions are purely from doctests. Most of them are kept
> private to keep the public API documentation clean and simple for
> users. This might not be the usual way of doing things, but for now I
> don't think I have a better option. Feedback and suggestions are always
> appreciated.
>
> [1] https://lore.kernel.org/rust-for-linux/DDHU4LL4GGIY.16OJMIL7ZK58P@nvidia.com/
>
> Best regards,
> Jesung

Hi Jesung,

I'm really looking forward to reviewing this one, but for some reason
patches 1 and 2 appear to not have been sent. They don't even appear on
lore: https://lore.kernel.org/all/cover.1766544407.git.y.j3ms.n@gmail.com/