Re: [PATCH] rust: kernel: remove support for unused host `#[test]`s

["Danilo Krummrich" <dakr@kernel.org>]

On Sat Jul 26, 2025 at 8:07 PM CEST, Miguel Ojeda wrote:
> Since commit 028df914e546 ("rust: str: convert `rusttest` tests into
> KUnit"), we do not have anymore host `#[test]`s that run in the host.
>
> Moreover, we do not plan to add any new ones -- tests should generally
> run within KUnit, since there they are built the same way the kernel
> does. While we may want to have some way to define tests that can also
> be run outside the kernel, we still want to test within the kernel too
> [1], and thus would likely use a custom syntax anyway to define them.
>
> Thus simplify the `rusttest` target by removing support for host
> `#[test]`s for the `kernel` crate.
>
> This still maintains the support for the `macros` crate, even though we
> do not have any such tests there.
>
> Link: https://lore.kernel.org/rust-for-linux/CABVgOS=AKHSfifp0S68K3jgNZAkALBr=7iFb=niryG5WDxjSrg@mail.gmail.com/ [1]
> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

Nice! This should also allow us to remove the Cmalloc allocator subsequently.

Reviewed-by: Danilo Krummrich <dakr@kernel.org>