riscv/mm: Enable THP migration

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Add two THP helpers required to create PMD migration swap entries,
and enable THP migration via ARCH_ENABLE_THP_MIGRATION. This can
reduce time of THP migration without splitting and guarantee the
migrated pages are still contiguous.

Signed-off-by: Nanyong Sun <sunnanyong@huawei.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Nanyong Sun 2021-11-23 22:06:38 +08:00 • committed by Palmer Dabbelt

parent fba88ede6a

commit d062a79b7c

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1

arch/riscv/Kconfig

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5

arch/riscv/include/asm/pgtable.h

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