On Sun, May 4, 2025 at 8:39 PM Tamir Duberstein tamird@gmail.com wrote:
One example is https://github.com/torvalds/linux/blob/59c9ab3e8cc7f56cd65608f6e938b5ae96eb9....
It might be that these are necessary because the xarray tests don't use kunit, and so are pretty inconvenient to run. As you might have guessed, I discovered these host tests when my patch porting the xarray tests to kunit broke the host-side build :(
It can be useful to have some tests as independent userspace things (i.e. outside KUnit-UML) to use other tooling on it, but I think for such cases we would want to have a way to use the tests from userspace without having to remove them from being KUnit tests too, since we definitely want to test them in the actual kernel too.
David et al. can probably tell us more context, e.g. I may be missing some plans on their side here. For instance, for Rust, we wanted to eventually have a way to tag stuff as kernel vs. host etc., but that is longer term.
Cheers, Miguel