Re: [PATCH v4 2/2] selftests/mm: Smoke test UFFD_FEATURE_WP_UNPOPULATED

[Peter Xu]

On Mon, Mar 20, 2023 at 11:25:43AM +0100, David Hildenbrand wrote:
> On 09.03.23 23:37, Peter Xu wrote:
> > Enable it by default on the stress test, and add some smoke tests for the
> > pte markers on anonymous.
> 
> Would it make sense to make kernel support optional and test both paths --
> once with the feature enabled (if available on the kernel we're testing) and
> once with the feature disabled?

Yeah, I think the current uffd selftest is not friendly to old kernels so I
made it simple - IOW the test should fail already on old kernels AFAIK.
Maybe I can prepare some patches this week or next to cleanup some parts of
it.

Thanks,

-- 
Peter Xu