On Thu, Jun 11, 2026 at 09:11:00AM +0530, Aboorva Devarajan wrote: > From: Sayali Patil <[email protected]> > > The HMM compound testcase currently assumes only PMD-level mappings and > fails on systems where default_hugepagesz=1G is set, because the region > is then reported by the device at PUD level. > > Determine the mapping level (PMD or PUD) the device reports for the first > page of the range and require every page to match that level exactly via > ASSERT_EQ(). This accepts PUD-level mappings while preserving the > expected/observed protection values printed on failure, and rejects a > fragmented mapping that mixes PMD- and PUD-level entries within the same > range (which a per-page OR check would have let pass). >
PUD is not supported with zone device private folios, the fix should be really around default_huge_page_size(), using the default pmd size. Balbir
