linux-kernel - Re: [PATCH] rust: kasan/kbuild: fix missing flags on first build

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Message-ID: <CANiq72=hD3No2R8-8znrOsL+AEs3rCVjNn3sn-d7qKSKZaGWvg@mail.gmail.com>
Date: Wed, 3 Sep 2025 11:12:35 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Conor Dooley <conor@...nel.org>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Andrey Ryabinin <ryabinin.a.a@...il.com>, Masahiro Yamada <masahiroy@...nel.org>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, 
	Danilo Krummrich <dakr@...nel.org>, rust-for-linux@...r.kernel.org, 
	Alexander Potapenko <glider@...gle.com>, Andrey Konovalov <andreyknvl@...il.com>, 
	Dmitry Vyukov <dvyukov@...gle.com>, Vincenzo Frascino <vincenzo.frascino@....com>, 
	kasan-dev@...glegroups.com, Nathan Chancellor <nathan@...nel.org>, 
	Nicolas Schier <nicolas@...sle.eu>, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org, patches@...ts.linux.dev, 
	Matthew Maurer <mmaurer@...gle.com>, Sami Tolvanen <samitolvanen@...gle.com>, stable@...r.kernel.org
Subject: Re: [PATCH] rust: kasan/kbuild: fix missing flags on first build

On Mon, Sep 1, 2025 at 7:46 PM Conor Dooley <conor@...nel.org> wrote:
>
> I'm not really sure what your target.json suggestion below is, so just
> reporting so that someone that understands the alternative solutions can
> fix this.

If you mean the last paragraph of the commit, then what I meant is
that we could do the filter conditionally, so that `rustc-option`
would work to test flags that require the `target.json` for those
architectures that already do not use `target.json`.

Cheers,
Miguel