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Date:   Wed, 01 Mar 2023 18:24:26 +0100
Message-Id: <CQV7ZNT6LMXI.1XG4YXSH8I7JK@vincent-arch>
Cc:     <rust-for-linux@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-kbuild@vger.kernel.org>, <asahi@lists.linux.dev>
Subject: Re: [PATCH] rust: Enable the new_uninit feature for kernel and
 driver crates
From:   "Vincenzo Palazzo" <vincenzopalazzodev@gmail.com>
To:     "Asahi Lina" <lina@asahilina.net>,
        "Miguel Ojeda" <ojeda@kernel.org>,
        "Alex Gaynor" <alex.gaynor@gmail.com>,
        "Wedson Almeida Filho" <wedsonaf@gmail.com>,
        "Boqun Feng" <boqun.feng@gmail.com>, "Gary Guo" <gary@garyguo.net>,
        =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= <bjorn3_gh@protonmail.com>,
        "Masahiro Yamada" <masahiroy@kernel.org>,
        "Nathan Chancellor" <nathan@kernel.org>,
        "Nick Desaulniers" <ndesaulniers@google.com>,
        "Nicolas Schier" <nicolas@fjasle.eu>
References: <20230224-rust-new_uninit-v1-1-c951443d9e26@asahilina.net>
In-Reply-To: <20230224-rust-new_uninit-v1-1-c951443d9e26@asahilina.net>
Precedence: bulk

> The unstable new_uninit feature enables various library APIs to create
> uninitialized containers, such as `Box::assume_init()`. This is
> necessary to build abstractions that directly initialize memory at the
> target location, instead of doing copies through the stack.
>
> Will be used by the DRM scheduler abstraction in the kernel crate, and
> by field-wise initialization (e.g. using `place!()` or a future
> replacement macro which may itself live in `kernel`) in driver crates.
>
> See [1] [2] [3] for background information.
>
> [1] https://github.com/Rust-for-Linux/linux/issues/879
> [2] https://github.com/Rust-for-Linux/linux/issues/2
> [3] https://github.com/rust-lang/rust/issues/63291
>
> Signed-off-by: Asahi Lina <lina@asahilina.net>
> ---

Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>