[PATCH] i915/selftest/igt_mmap: let mmap tests run in kthread

[Mikolaj Wasiak]

Hi Janusz,

> I agree with both Andi and Krzysztof comments.
> 
> If the issue is tracked in our bug tracker then please provide a link to its 
> record in a Link: or even Closes: tag.  Do you have call traces on hand?  
> Probably yes, so please consider adding a concise excerpt to your description.
> 
> While looking for similar cases, I've found commit 51104c19d857 ("kunit: test: 
> Add vm_mmap() allocation resource manager") that seems to have resolved a 
> similar issue for then newly added kunit tests accessing current->mm.  Maybe 
> the approach used there is worth of reusing it for i915 selftests.
> 
> Thanks,
> Janusz

Here is related bug
Link: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13679

I've seen commit you found. It sadly uses symbols that aren't exported
outside of mm module and kunit tests and so I can't replicate it in our
selftest.

Mikołaj