LoongArch: Let pmd_present() return true when splitting pmd

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When we split a pmd into ptes, pmd_present() and pmd_trans_huge() should
return true, otherwise it would be treated as a swap pmd.

This is the same as arm64 does in commit b65399f611 ("arm64/mm: Change
THP helpers to comply with generic MM semantics"), we also add a new bit
named _PAGE_PRESENT_INVALID for LoongArch.

Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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Hongchen Zhang 2023-06-15 14:35:52 +08:00 • committed by Huacai Chen

parent 858fd168a9

commit ddc1729b07

2 changed files with 4 additions and 1 deletions

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2

arch/loongarch/include/asm/pgtable-bits.h

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3

arch/loongarch/include/asm/pgtable.h

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