[PATCH 0/7] HWPOISON for hugepage backed KVM guest

[Naoya Horiguchi]

Hi,

I wrote "HWPOISON for hugepage" patchset last year, but it didn't
cover the hugepages used by KVM guest because follow_hugetlb_pages()
called in a guest page fault code path didn't know about swap entry
formatted pmd entry.
This patchset fixes it and makes both soft and hard offline available
on hugepage backed KVM guest.

I appreciate all of your comments and reviews.

Thanks,
Naoya Horiguchi

Summary:

  [PATCH 1/7] hugetlb: check swap entry in follow_hugetlb_page()
  [PATCH 2/7] check hugepage swap entry in get_user_pages_fast()
  [PATCH 3/7] remove putback_lru_pages() in hugepage migration context
  [PATCH 4/7] hugetlb, migration: add migration_hugepage_entry_wait()
  [PATCH 5/7] hugetlb: fix race condition between hugepage soft offline and page fault
  [PATCH 6/7] HWPOISON: pass order to set/clear_page_hwpoison_huge_page()
  [PATCH 7/7] HWPOISON, hugetlb: fix hard offline for hugepage backed KVM guest

  arch/x86/mm/gup.c       |    9 +++++++++
  include/linux/swapops.h |   20 ++++++++++++++++++++
  mm/hugetlb.c            |   39 +++++++++++++++++++++++++++++----------
  mm/memory-failure.c     |   24 +++++++++++++-----------
  mm/migrate.c            |   33 +++++++++++++++++++++++++++++++++
  5 files changed, 104 insertions(+), 21 deletions(-)
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