On Fri, Jan 15, 2021 at 01:10:27PM -0500, Pavel Tatashin wrote: > I've been thinking about this some more. Again, I am not sure this is > a bug. I understand split_huge_pmd() may split the PMD size page into > PTEs and leave the compound page intact. However, in order for pages[] > to have non sequential addresses in compound page, those PTEs must > also be migrated after split_huge_pmd(), Why focus on migrated? Anything could happen to those PTEs: they could be COW'd, they could be mmap/munmap'd, etc. Jason
