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riscv: mm: make pmd_bad() check leaf condition

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In the definition in Documentation/vm/arch_pgtable_helpers.rst,
pmd_bad() means test a non-table mapped PMD, so it should also
return true when it is a leaf page.

Signed-off-by: Nanyong Sun <sunnanyong@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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Nanyong Sun 2021-04-30 16:28:48 +08:00 committed by Palmer Dabbelt
parent f5397c3ee0
commit 141682f5b9
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1 changed files with 1 additions and 1 deletions
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arch/riscv/include/asm/pgtable.h
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@ -184,7 +184,7 @@ static inline int pmd_none(pmd_t pmd)
static inline int pmd_bad(pmd_t pmd)
{
return !pmd_present(pmd);
return !pmd_present(pmd) || (pmd_val(pmd) & _PAGE_LEAF);
}
#define pmd_leaf pmd_leaf