[PATCH V2 0/2] Fixes for contiguous hugetlb

[steve.capper@arm.com (Steve Capper)]

This patch series addresses a couple of issues found with contiguous hugetlb.

1) It is possible for old hugetlb's to be created by remove_migration_pte, the
   first patch adjusts the code to capture any young ptes that could have been
   created by hardware dirty bit management.

2) huge_ptep_set_access_flags has been changed in the second patch to prevent it
   from unnecessarily invalidating contiguous hugetlb mappings (which also stops
   it from potentially evoking back-to-back page faults).

These patches have not yet been tested on hardware. 

Steve Capper (2):
  arm64: hugetlb: Fix handling of young ptes
  arm64: hugetlb: Avoid unnecessary clearing in
    huge_ptep_set_access_flags

 arch/arm64/mm/hugetlbpage.c | 50 ++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 43 insertions(+), 7 deletions(-)

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2.11.0