[PATCH v4] hardening: Default randstruct off with rust for better allmodconfig support

[Miguel Ojeda]

On Wed, Sep 2, 2026 at 12:52 AM Mark Brown <broonie at kernel.org> wrote:
>
> Currently randstruct does not support rust so we have Kconfig dependencies
> which prevent rust being enabled when randstruct is. Unfortunately this
> prevents rust being enabled in allmodconfig, our standard coverage build.
> randstruct gets turned on by default, then the dependency on !RANDSTRUCT
> causes rust to get disabled.
>
> Work around this by disabling randstruct by default if we have a usable
> rust toolchain and rust support for the architecture, circular
> dependencies prevent us directly depending on !RUST. This means we might
> end up with a configuration that disables both rust and randstruct but
> hopefully it's more likely go give the expected result.
>
> Signed-off-by: Mark Brown <broonie at kernel.org>

I thought this was already applied:

  https://git.kernel.org/kees/c/3844a38c9c4a

  https://lore.kernel.org/rust-for-linux/178733378275.2181196.3186172911325132761.b4-ty@kernel.org/

But it doesn't seem to be in -next -- that branch isn't merged there I think.

Cheers,
Miguel