[PATCH v2 08/24] powerpc/mm: don't use _PAGE_EXEC in book3s/32
From: Christophe Leroy <hidden>
Date: 2018-09-12 16:00:37
Also in:
dri-devel, linux-arm-kernel, linux-block, linuxppc-dev, lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
book3s/32 doesn't define _PAGE_EXEC, so no need to use it. All other platforms define _PAGE_EXEC so no need to check it is not NUL when not book3s/32. Reviewed-by: Aneesh Kumar K.V <redacted> Signed-off-by: Christophe Leroy <redacted> --- arch/powerpc/include/asm/book3s/32/pgtable.h | 2 +- arch/powerpc/mm/pgtable.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h
index 7a9f0ed599ff..3127cc529aa1 100644
--- a/arch/powerpc/include/asm/book3s/32/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/32/pgtable.h@@ -234,7 +234,7 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma, int psize) { unsigned long set = pte_val(entry) & - (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); + (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW); unsigned long clr = ~pte_val(entry) & _PAGE_RO; pte_update(ptep, clr, set);
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index d71c7777669c..4f788f3762a9 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c@@ -73,7 +73,7 @@ static struct page *maybe_pte_to_page(pte_t pte) return page; } -#if defined(CONFIG_PPC_STD_MMU) || _PAGE_EXEC = 0 +#ifdef CONFIG_PPC_BOOK3S /* Server-style MMU handles coherency when hashing if HW exec permission * is supposed per page (currently 64-bit only). If not, then, we always
@@ -106,7 +106,7 @@ static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma, return pte; } -#else /* defined(CONFIG_PPC_STD_MMU) || _PAGE_EXEC = 0 */ +#else /* CONFIG_PPC_BOOK3S */ /* Embedded type MMU with HW exec support. This is a bit more complicated * as we don't have two bits to spare for _PAGE_EXEC and _PAGE_HWEXEC so
@@ -179,7 +179,7 @@ static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma, return __pte(pte_val(pte) | _PAGE_EXEC); } -#endif /* !(defined(CONFIG_PPC_STD_MMU) || _PAGE_EXEC = 0) */ +#endif /* CONFIG_PPC_BOOK3S */ /* * set_pte stores a linux PTE into the linux page table.
--
2.13.3