linux-kernel - [mm-unstable PATCH v4 0/9] mm, hwpoison: enable 1GB hugepage support (v4)

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Date:   Mon,  4 Jul 2022 10:33:03 +0900
From:   Naoya Horiguchi <naoya.horiguchi@...ux.dev>
To:     linux-mm@...ck.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Liu Shixin <liushixin2@...wei.com>,
        Yang Shi <shy828301@...il.com>,
        Oscar Salvador <osalvador@...e.de>,
        Muchun Song <songmuchun@...edance.com>,
        Naoya Horiguchi <naoya.horiguchi@....com>,
        linux-kernel@...r.kernel.org
Subject: [mm-unstable PATCH v4 0/9] mm, hwpoison: enable 1GB hugepage support (v4)

Here is v4 of "enabling memory error handling on 1GB hugepage" patchset.
It's rebased onto mm-unstable on Jul 3 (1e6a0f7c1c49).  There're a few
conflicts, but all the resolutions are superficial ones.

- v1: https://lore.kernel.org/linux-mm/20220602050631.771414-1-naoya.horiguchi@linux.dev/T/#u
- v2: https://lore.kernel.org/linux-mm/20220623235153.2623702-1-naoya.horiguchi@linux.dev/T/#u
- v3: https://lore.kernel.org/linux-mm/20220630022755.3362349-1-naoya.horiguchi@linux.dev/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       | 147 ++++++++++++++++++++++++++++++++++++----------
 7 files changed, 223 insertions(+), 61 deletions(-)