[PATCH] mm/debug: Add tests validating arch page table helpers for core features

[Christophe Leroy]

Le 27/02/2020 à 11:33, Anshuman Khandual a écrit :
> This adds new tests validating arch page table helpers for these following
> core memory features. These tests create and test specific mapping types at
> various page table levels.
> 
> * SPECIAL mapping
> * PROTNONE mapping
> * DEVMAP mapping
> * SOFTDIRTY mapping
> * SWAP mapping
> * MIGRATION mapping
> * HUGETLB mapping

For testing HUGETLB mappings, you also have to include tests of hugepd 
functions/helpers. Not all archictures have hugepage size which matches 
with page tables levels (e.g. powerpc). Those architectures use hugepd_t.

Christophe