Re: [PATCH v1 0/8] Fix set_huge_pte_at() panic on arm64

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On Thu, Sep 21, 2023 at 05:35:54PM +0100, Ryan Roberts wrote:
> On 21/09/2023 17:30, Andrew Morton wrote:
> > On Thu, 21 Sep 2023 17:19:59 +0100 Ryan Roberts <ryan.roberts@xxxxxxx> wrote:
> >> Ryan Roberts (8):
> >>   parisc: hugetlb: Convert set_huge_pte_at() to take vma
> >>   powerpc: hugetlb: Convert set_huge_pte_at() to take vma
> >>   riscv: hugetlb: Convert set_huge_pte_at() to take vma
> >>   s390: hugetlb: Convert set_huge_pte_at() to take vma
> >>   sparc: hugetlb: Convert set_huge_pte_at() to take vma
> >>   mm: hugetlb: Convert set_huge_pte_at() to take vma
> >>   arm64: hugetlb: Convert set_huge_pte_at() to take vma
> >>   arm64: hugetlb: Fix set_huge_pte_at() to work with all swap entries
> >>
> >>  arch/arm64/include/asm/hugetlb.h              |  2 +-
> >>  arch/arm64/mm/hugetlbpage.c                   | 22 ++++----------
> >>  arch/parisc/include/asm/hugetlb.h             |  2 +-
> >>  arch/parisc/mm/hugetlbpage.c                  |  4 +--
> >>  .../include/asm/nohash/32/hugetlb-8xx.h       |  3 +-
> >>  arch/powerpc/mm/book3s64/hugetlbpage.c        |  2 +-
> >>  arch/powerpc/mm/book3s64/radix_hugetlbpage.c  |  2 +-
> >>  arch/powerpc/mm/nohash/8xx.c                  |  2 +-
> >>  arch/powerpc/mm/pgtable.c                     |  7 ++++-
> >>  arch/riscv/include/asm/hugetlb.h              |  2 +-
> >>  arch/riscv/mm/hugetlbpage.c                   |  3 +-
> >>  arch/s390/include/asm/hugetlb.h               |  8 +++--
> >>  arch/s390/mm/hugetlbpage.c                    |  8 ++++-
> >>  arch/sparc/include/asm/hugetlb.h              |  8 +++--
> >>  arch/sparc/mm/hugetlbpage.c                   |  8 ++++-
> >>  include/asm-generic/hugetlb.h                 |  6 ++--
> >>  include/linux/hugetlb.h                       |  6 ++--
> >>  mm/damon/vaddr.c                              |  2 +-
> >>  mm/hugetlb.c                                  | 30 +++++++++----------
> >>  mm/migrate.c                                  |  2 +-
> >>  mm/rmap.c                                     | 10 +++----
> >>  mm/vmalloc.c                                  |  5 +++-
> >>  22 files changed, 80 insertions(+), 64 deletions(-)
> > 
> > Looks scary but it's actually a fairly modest patchset.  It could
> > easily be all rolled into a single patch for ease of backporting. 
> > Maybe Greg has an opinion?
> 
> Yes, I thought about doing that; or perhaps 2 patches - one for the interface
> change across all arches and core code, and one for the actual bug fix?

I think this would make more sense, especially if we want to backport
it. The first patch would have no functional change, only an interface
change, followed by the arm64 fix.

-- 
Catalin



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