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Re: [PATCH v3.1 4/6] mm/hugetlb: Allow architectures to override huge_pte_clear()

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On Mon, May 22, 2017 at 6:25 PM, Punit Agrawal <punit.agrawal@arm.com> wrote:
> When unmapping a hugepage range, huge_pte_clear() is used to clear the
> page table entries that are marked as not present. huge_pte_clear()
> internally just ends up calling pte_clear() which does not correctly
> deal with hugepages consisting of contiguous page table entries.
>
> Add a size argument to address this issue and allow architectures to
> override huge_pte_clear() by wrapping it in a #ifndef block.
>
> Update s390 implementation with the size parameter as well.
>
> Note that the change only affects huge_pte_clear() - the other generic
> hugetlb functions don't need any change.
>
> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
> Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
> Cc: Mike Kravetz <mike.kravetz@oracle.com>

Acked-by: Arnd Bergmann <arnd@arndb.de>

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[PATCH v3 4/6] mm/hugetlb: Allow architectures to override huge_pte_clear() Punit Agrawal <punit.agrawal@arm.com> - 2017-05-22 15:40 +0200
  Re: [PATCH v3 4/6] mm/hugetlb: Allow architectures to override huge_pte_clear() Arnd Bergmann <arnd@arndb.de> - 2017-05-22 16:00 +0200
    Re: [PATCH v3 4/6] mm/hugetlb: Allow architectures to override huge_pte_clear() Punit Agrawal <punit.agrawal@arm.com> - 2017-05-22 17:50 +0200
  [PATCH v3.1 4/6] mm/hugetlb: Allow architectures to override huge_pte_clear() Punit Agrawal <punit.agrawal@arm.com> - 2017-05-22 18:30 +0200
    Re: [PATCH v3.1 4/6] mm/hugetlb: Allow architectures to override huge_pte_clear() Arnd Bergmann <arnd@arndb.de> - 2017-05-22 22:40 +0200
      Re: [PATCH v3.1 4/6] mm/hugetlb: Allow architectures to override huge_pte_clear() Punit Agrawal <punit.agrawal@arm.com> - 2017-05-23 17:00 +0200
    Re: [PATCH v3.1 4/6] mm/hugetlb: Allow architectures to override  huge_pte_clear() Martin Schwidefsky <schwidefsky@de.ibm.com> - 2017-05-23 07:30 +0200
      Re: [PATCH v3.1 4/6] mm/hugetlb: Allow architectures to override huge_pte_clear() Punit Agrawal <punit.agrawal@arm.com> - 2017-05-23 17:00 +0200

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