diff options
| author | Joey Gouly <joey.gouly@arm.com> | 2024-08-22 16:10:46 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-09-04 12:52:40 +0100 |
| commit | 9f82f15ddfdd60bb9820f09737333b2345e22ab3 (patch) | |
| tree | e9c4eb3da779eb7179449b696cdfa20089efbebb /include/linux/mm.h | |
| parent | 5626f8d45e0951f418cfc06ad8be71e3f51e585f (diff) | |
mm: use ARCH_PKEY_BITS to define VM_PKEY_BITN
Use the new CONFIG_ARCH_PKEY_BITS to simplify setting these bits
for different architectures.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-mm@kvack.org
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20240822151113.1479789-4-joey.gouly@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index c4b238a20b76..fb6ccd93f589 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -330,12 +330,16 @@ extern unsigned int kobjsize(const void *objp); #endif /* CONFIG_ARCH_USES_HIGH_VMA_FLAGS */ #ifdef CONFIG_ARCH_HAS_PKEYS -# define VM_PKEY_SHIFT VM_HIGH_ARCH_BIT_0 -# define VM_PKEY_BIT0 VM_HIGH_ARCH_0 /* A protection key is a 4-bit value */ -# define VM_PKEY_BIT1 VM_HIGH_ARCH_1 /* on x86 and 5-bit value on ppc64 */ -# define VM_PKEY_BIT2 VM_HIGH_ARCH_2 -# define VM_PKEY_BIT3 VM_HIGH_ARCH_3 -#ifdef CONFIG_PPC +# define VM_PKEY_SHIFT VM_HIGH_ARCH_BIT_0 +# define VM_PKEY_BIT0 VM_HIGH_ARCH_0 +# define VM_PKEY_BIT1 VM_HIGH_ARCH_1 +# define VM_PKEY_BIT2 VM_HIGH_ARCH_2 +#if CONFIG_ARCH_PKEY_BITS > 3 +# define VM_PKEY_BIT3 VM_HIGH_ARCH_3 +#else +# define VM_PKEY_BIT3 0 +#endif +#if CONFIG_ARCH_PKEY_BITS > 4 # define VM_PKEY_BIT4 VM_HIGH_ARCH_4 #else # define VM_PKEY_BIT4 0 |