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Mon, 17 Mar 2025 08:04:44 -0700 (PDT) Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250317-ptr-as-ptr-v5-0-5b5f21fa230a@gmail.com> <20250317-ptr-as-ptr-v5-6-5b5f21fa230a@gmail.com> In-Reply-To: <20250317-ptr-as-ptr-v5-6-5b5f21fa230a@gmail.com> From: Tamir Duberstein Date: Mon, 17 Mar 2025 11:04:08 -0400 X-Gm-Features: AQ5f1Jqz7-ZXmJNFs_YhRQRGhbHO2cgIBb8ny_OJeurceVHHPcJUVWK0PvgHo-A Message-ID: Subject: Re: [PATCH v5 6/6] rust: use strict provenance APIs To: Masahiro Yamada , Nathan Chancellor , Nicolas Schier , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Greg Kroah-Hartman , "Rafael J. Wysocki" , Brendan Higgins , David Gow , Rae Moar , Bjorn Helgaas , Luis Chamberlain , Russ Weight , Rob Herring , Saravana Kannan Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-pci@vger.kernel.org, linux-block@vger.kernel.org, devicetree@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, Mar 17, 2025 at 10:24=E2=80=AFAM Tamir Duberstein wrote: > > Throughout the tree, use the strict provenance APIs stabilized in Rust > 1.84.0[1]. Retain backwards-compatibility by introducing forwarding > functions at the `kernel` crate root along with polyfills for rustc < > 1.84.0. > > Use `#[allow(clippy::incompatible_msrv)]` to avoid warnings on rustc < > 1.84.0 as our MSRV is 1.78.0. > > In the `kernel` crate, enable the strict provenance lints on rustc >=3D > 1.84.0; do this in `lib.rs` rather than `Makefile` to avoid introducing > compiler flags that are dependent on the rustc version in use. As Benno pointed out on v4, this should probably include: Note that the enablement of the strict provenance lints does not extend to the `kernel` crate's doctests.