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Date: Mon, 16 Mar 2026 13:31:48 +0100
Message-Id: <DH47IUOY0Q9T.JKDPRZV6PSCP@kernel.org>
From: "Danilo Krummrich" <dakr@kernel.org>
Subject: Re: [RFC PATCH] rust: kbuild: support global per-version flags
Cc: "Miguel Ojeda" <miguel.ojeda.sandonis@gmail.com>, "Miguel Ojeda"
 <ojeda@kernel.org>, <a.hindborg@kernel.org>, <aliceryhl@google.com>,
 <bjorn3_gh@protonmail.com>, <boqun@kernel.org>, <gary@garyguo.net>,
 <jhubbard@nvidia.com>, <linux-kernel@vger.kernel.org>,
 <linux-pm@vger.kernel.org>, <lossin@kernel.org>, <rafael@kernel.org>,
 <rust-for-linux@vger.kernel.org>, <tmgross@umich.edu>,
 <viresh.kumar@linaro.org>
To: "Mark Brown" <broonie@kernel.org>
References: <CANiq72mWdFU11GcCZRchzhy0Gi1QZShvZtyRkHV2O+WA2uTdVQ@mail.gmail.com> <20260307170929.153892-1-ojeda@kernel.org> <CANiq72=drAtf3y_DZ-2o4jb6Az9J3Yj4QYwWnbRui4sm4AJD3Q@mail.gmail.com> <abdJE4BsrzGDTVZT@sirena.co.uk> <CANiq72nXMbP2ZbyNE6voWXrEXg85s99pXLj5LeybZry4eAyzEQ@mail.gmail.com> <ffd14e81-c64e-42fa-aa18-60c8036f13e8@sirena.org.uk>
In-Reply-To: <ffd14e81-c64e-42fa-aa18-60c8036f13e8@sirena.org.uk>

On Mon Mar 16, 2026 at 1:50 PM CET, Mark Brown wrote:
> On Mon, Mar 16, 2026 at 05:49:02AM +0100, Miguel Ojeda wrote:
>> On Mon, Mar 16, 2026 at 1:04=E2=80=AFAM Mark Brown <broonie@kernel.org> =
wrote:
>
>> > At the minute whatever linux-next runs is whatever Debian stable has!
>
>> Great, that would mean we are effectively keeping the minimum one
>> clean, which is in a way the best we can do (apart from the maximum)
>> if we don't try to keep every single version clean between them.
>
> Note that I've not started running with clippy yet, currently due to
> Linus' tree having:
>
> error: current MSRV (Minimum Supported Rust Version) is `1.78.0` but this=
 item is stable since `1.79.0`
>   --> /tmp/next/build/rust/kernel/ptr/projection.rs:79:26
>    |
> 79 |         if self >=3D slice.len() {
>    |                          ^^^^^
>    |
>    =3D help: for further information visit https://rust-lang.github.io/ru=
st-clippy/master/index.html#incompatible_msrv
>    =3D note: `-D clippy::incompatible-msrv` implied by `-D warnings`
>    =3D help: to override `-D warnings` add `#[allow(clippy::incompatible_=
msrv)]`

Interesting, I neither see this with 1.78.0 nor 1.94.0, but I can indeed
reproduce this with 1.85.1.