[PATCH v2 0/1] mm: Xen PV regression after THP PTE optimization

Hi all,

I recently discovered an mm regression introduced in kernel version 6.9 that affects systems running as a Xen PV domain [1]. Original fix proposal wasn't ideal, but it sparked a discussion which helped us fully understand the root cause.

The new v2 patch contains changes based on David Hildenbrand's proposal to cap max_nr to the number of PFNs that actually remain in the folio and to clean up the loop.

Thanks, Petr

[1] https://lore.kernel.org/lkml/20250429142237.22138-1-arkamar@atlas.cz

Petr Vaněk (1): mm: fix folio_pte_batch() on XEN PV

mm/internal.h | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-)