On 24.02.22 22:23, Muhammad Usama Anjum wrote:
> This introduces three tests:
> 1) Sanity check soft dirty basic semantics: allocate area, clean, dirty,
> check if the SD bit flipped.
> 2) Check VMA reuse: validate the VM_SOFTDIRTY usage
> 3) Check soft-dirty on huge pages
>
> This was motivated by Will Deacon's fix commit 912efa17e512 ("mm: proc:
> Invalidate TLB after clearing soft-dirty page state"). I was tracking the
> same issue that he fixed, and this test would have caught it.
>
A note that madv_populate.c already contains some SOFTDIRTY tests
regarding MADV_POPULATE. Eventually we want to factor out
softdirty/pagemap handling+checks for easier reuse.
--
Thanks,
David / dhildenb
