Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH 2/6] powerpc: fix usage of _PAGE_RO in hugepage | Date | Fri, 12 Aug 2016 18:55:48 +0200 (CEST) |
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fixes: a7b9f671f2d14 ("powerpc32: adds handling of _PAGE_RO") Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/include/asm/book3s/64/pgtable.h | 2 ++ arch/powerpc/mm/hugetlbpage.c | 2 ++ 2 files changed, 4 insertions(+)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 3f85d43..7873b09 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -6,6 +6,8 @@ */ #define _PAGE_BIT_SWAP_TYPE 0 +#define _PAGE_RO 0 + #define _PAGE_EXEC 0x00001 /* execute permission */ #define _PAGE_WRITE 0x00002 /* write access allowed */ #define _PAGE_READ 0x00004 /* read access allowed */ diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 9164a77..03fcb7e 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -1019,6 +1019,8 @@ int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr, mask = _PAGE_PRESENT | _PAGE_READ; if (write) mask |= _PAGE_WRITE; + else + mask |= _PAGE_RO; if ((pte_val(pte) & mask) != mask) return 0; -- 2.1.0
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