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From: Andreas Hindborg <a.hindborg@kernel.org>
To: mateusz.nowicki@posteo.net
Cc: Boqun Feng <boqun@kernel.org>, Miguel Ojeda <ojeda@kernel.org>, Gary Guo
 <gary@garyguo.net>, =?utf-8?Q?Bj=C3=B6rn?= Roy Baron
 <bjorn3_gh@protonmail.com>, Benno
 Lossin <lossin@kernel.org>, Alice Ryhl <aliceryhl@google.com>, Trevor
 Gross <tmgross@umich.edu>, Danilo Krummrich <dakr@kernel.org>, Jens Axboe
 <axboe@kernel.dk>, linux-block@vger.kernel.org,
 rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] rust: block: mq: align init_request numa_node arg with
 C signature
In-Reply-To: <1552076fb3201e5e47ead0989e793472@posteo.net>
References: <20260527-block-for-next-2026-05-26-2200-failure-v1-1-4865889e282c@kernel.org>
 <1552076fb3201e5e47ead0989e793472@posteo.net>
Date: Wed, 27 May 2026 20:16:50 +0200
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mateusz.nowicki@posteo.net writes:

> Hello Andreas,
>
> how can I catch it earlier in the future? I verified patch correctness 
> with compiling 'allyesconfig' but
> I didn't catch rust issue.

As Gary says, CONFIG_RUST is silently disabled if the required tools are
not present. Please see the quick start guide for how to get a suitable
compiler on major distros [1].

You can run `make LLVM=1 rustavailable` to check that your tools are set
up correctly.

Best regards,
Andreas Hindborg


[1] https://docs.kernel.org/rust/quick-start.html