linux-kernel - Re: [PATCH] rust: Enable the new_uninit feature for kernel and driver crates

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Date:   Mon, 27 Feb 2023 14:48:50 +0100
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Andreas Hindborg <nmi@...aspace.dk>
Cc:     Asahi Lina <lina@...hilina.net>, Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kbuild@...r.kernel.org, asahi@...ts.linux.dev
Subject: Re: [PATCH] rust: Enable the new_uninit feature for kernel and driver crates

On Mon, Feb 27, 2023 at 2:15 PM Andreas Hindborg <nmi@...aspace.dk> wrote:
>
> What is the purpose of adding the feature here? The kernel crate seems
> to compile fine without this.

`rust_allowed_features` is the list of features that crates outside
`rust/` can use (e.g. drivers).

The goal is to control which unstable features are used outside the
`kernel` crate and to avoid mistakenly relying on them.

Cheers,
Miguel