Anshuman Khandual <anshuman.khandual@xxxxxxx> writes:
> Hello Daniel,
>
> This test just ensures that PFN is preserved during pte <--> swap pte transformations
> , and the warning here seems to have been caused by powerpc platform specific helpers
> and/or its pte_t representation. Adding powerpc folks and platform mailing list here.
Doesn't the test need a similar treatment to:
2321ba3e3733 ("mm/debug_vm_pgtable: more pte_swp_exclusive() sanity checks")
Which said:
Especially, the pfn_pte() is dodgy when the swap PTE layout differs
heavily from ordinary PTEs. Let's properly construct a swap PTE from swap
type+offset.
cheers
