[PATCH 6.12.y 0/4] mm/hugetlb: fixes for PMD table sharing (incl. using mmu_gather)

["David Hildenbrand (Arm)" <david@kernel.org>]

Backport of [1] for 6.12.

While
	"mm/rmap: fix two comments related to huge_pmd_unshare()"
was already backported,
	"mm/hugetlb: fix copy_hugetlb_page_range() to use ->pt_share_count"
wasn't.

Only contextual conflicts. Backport of
	"mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables
	 using mmu_gather"
is the same as for 6.10.

[1] https://lore.kernel.org/linux-mm/20251223214037.580860-1-david@kernel.org/

David Hildenbrand (Arm) (1):
  mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables
    using mmu_gather

David Hildenbrand (Red Hat) (2):
  mm/hugetlb: fix hugetlb_pmd_shared()
  mm/hugetlb: fix two comments related to huge_pmd_unshare()

Jane Chu (1):
  mm/hugetlb: fix copy_hugetlb_page_range() to use ->pt_share_count

 include/asm-generic/tlb.h |  77 +++++++++++++++++++-
 include/linux/hugetlb.h   |  17 +++--
 include/linux/mm_types.h  |   6 ++
 mm/hugetlb.c              | 146 ++++++++++++++++++++------------------
 mm/mmu_gather.c           |  33 +++++++++
 mm/rmap.c                 |  25 ++++---
 6 files changed, 219 insertions(+), 85 deletions(-)

-- 
2.43.0