powerpc needs an additional vma bit to support 32 keys. Till the additional vma bit lands in include/linux/mm.h we have to define it in powerpc specific header file. This is needed to get pkeys working on power. Signed-off-by: Ram Pai <linuxram@xxxxxxxxxx> --- arch/powerpc/include/asm/pkeys.h | 18 ++++++++++++++++++ 1 files changed, 18 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/include/asm/pkeys.h b/arch/powerpc/include/asm/pkeys.h index acad7c2..4ccb8f5 100644 --- a/arch/powerpc/include/asm/pkeys.h +++ b/arch/powerpc/include/asm/pkeys.h @@ -2,6 +2,24 @@ #define _ASM_PPC64_PKEYS_H extern bool pkey_inited; + +/* + * powerpc needs an additional vma bit to support 32 keys. + * Till the additional vma bit lands in include/linux/mm.h + * we have to carry the hunk below. This is needed to get + * pkeys working on power. -- Ram + */ +#ifndef VM_HIGH_ARCH_BIT_4 +#define VM_HIGH_ARCH_BIT_4 36 +#define VM_HIGH_ARCH_4 BIT(VM_HIGH_ARCH_BIT_4) +#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 +#define VM_PKEY_BIT3 VM_HIGH_ARCH_3 +#define VM_PKEY_BIT4 VM_HIGH_ARCH_4 +#endif + #define ARCH_VM_PKEY_FLAGS 0 static inline bool mm_pkey_is_allocated(struct mm_struct *mm, int pkey) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
