Here is v3 of "enabling memory error handling on 1GB hugepage" patchset. I applied feedbacks for v2, thank you very much. Overall design of the patchset is unchanged. Please see individual patches for details about changes. Patch dependency: - "mm/memory-failure: disable unpoison once hw error happens" (actually the conflict is not logical one, but adding MF_SIMULATED to mf_flags conflicts with patch 6/9.) Previous versions: - v1: https://lore.kernel.org/linux-mm/20220602050631.771414-1-naoya.horiguchi@xxxxxxxxx/T/#u - v2: https://lore.kernel.org/linux-mm/20220623235153.2623702-1-naoya.horiguchi@xxxxxxxxx/T/#u Thanks, Naoya Horiguchi --- Summary: Naoya Horiguchi (9): mm/hugetlb: check gigantic_page_runtime_supported() in return_unused_surplus_pages() mm/hugetlb: separate path for hwpoison entry in copy_hugetlb_page_range() mm/hugetlb: make pud_huge() and follow_huge_pud() aware of non-present pud entry mm, hwpoison, hugetlb: support saving mechanism of raw error pages mm, hwpoison: make unpoison aware of raw error info in hwpoisoned hugepage mm, hwpoison: set PG_hwpoison for busy hugetlb pages mm, hwpoison: make __page_handle_poison returns int mm, hwpoison: skip raw hwpoison page in freeing 1GB hugepage mm, hwpoison: enable memory error handling on 1GB hugepage arch/x86/mm/hugetlbpage.c | 8 ++- include/linux/hugetlb.h | 18 +++++- include/linux/mm.h | 2 +- include/linux/swapops.h | 9 +++ include/ras/ras_event.h | 1 - mm/hugetlb.c | 99 ++++++++++++++++++++++--------- mm/memory-failure.c | 148 ++++++++++++++++++++++++++++++++++++---------- 7 files changed, 224 insertions(+), 61 deletions(-)
