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    Subject[RFC V2 0/2] arm64/mm: Enable THP migration
    Date
    This series enables THP migration on arm64 via ARCH_ENABLE_THP_MIGRATION.
    But first this modifies all existing THP helpers like pmd_present() and
    pmd_trans_huge() etc per expected generic memory semantics as concluded
    from a previous discussion here.

    https://lkml.org/lkml/2018/10/9/220

    This series is based on v5.8-rc1.

    Changes in RFC V2:

    - Used PMD_TABLE_BIT to represent splitting PMD state per Catalin

    Changes in RFC V1: (https://patchwork.kernel.org/project/linux-mm/list/?series=138797)

    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Will Deacon <will@kernel.org>
    Cc: Mark Rutland <mark.rutland@arm.com>
    Cc: Marc Zyngier <maz@kernel.org>
    Cc: Suzuki Poulose <suzuki.poulose@arm.com>
    Cc: Zi Yan <ziy@nvidia.com>
    Cc: linux-arm-kernel@lists.infradead.org
    Cc: linux-kernel@vger.kernel.org

    Anshuman Khandual (2):
    arm64/mm: Change THP helpers per generic memory semantics
    arm64/mm: Enable THP migration

    arch/arm64/Kconfig | 4 ++
    arch/arm64/include/asm/pgtable.h | 102 +++++++++++++++++++++++++++----
    arch/arm64/mm/hugetlbpage.c | 2 +-
    arch/arm64/mm/mmu.c | 20 ++++++
    4 files changed, 116 insertions(+), 12 deletions(-)

    --
    2.20.1

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