[RFC v6 38/62] powerpc: implementation for arch_pkeys_enabled()

[Ram Pai]

arch_pkeys_enabled() returns true if the cpu
supports protection key, and the kernel has it
enabled.

Signed-off-by: Ram Pai <linuxram at us.ibm.com>
---
 arch/powerpc/include/asm/pkeys.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/include/asm/pkeys.h b/arch/powerpc/include/asm/pkeys.h
index 7a9aade..ea43cb2 100644
--- a/arch/powerpc/include/asm/pkeys.h
+++ b/arch/powerpc/include/asm/pkeys.h
@@ -201,6 +201,11 @@ static inline int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
 	return __arch_set_user_pkey_access(tsk, pkey, init_val);
 }
 
+static inline bool arch_pkeys_enabled(void)
+{
+	return pkey_inited;
+}
+
 static inline void pkey_mm_init(struct mm_struct *mm)
 {
 	if (!pkey_inited)
-- 
1.7.1