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LoongArch: Add pgprot_nx() implementation

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Commit cca98e9f8b ("mm: enforce that vmap can't map pages
executable") enforces the W^X protection by not allowing remapping
existing pages as executable. Add LoongArch bits so that LoongArch
can benefit the same protection.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Huacai Chen 2025-01-25 18:51:42 +08:00
parent 613d4164f5
commit 0816b2ea18
1 changed files with 7 additions and 0 deletions
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7
arch/loongarch/include/asm/pgtable-bits.h
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@ -96,6 +96,13 @@
#define _PAGE_IOREMAP pgprot_val(PAGE_KERNEL_SUC)
#define pgprot_nx pgprot_nx
static inline pgprot_t pgprot_nx(pgprot_t _prot)
{
return __pgprot(pgprot_val(_prot) | _PAGE_NO_EXEC);
}
#define pgprot_noncached pgprot_noncached
static inline pgprot_t pgprot_noncached(pgprot_t _prot)