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

Submitted by Ram Pai on July 16, 2017, 3:56 a.m.

Details

Message ID 1500177424-13695-39-git-send-email-linuxram@us.ibm.com
State RFC
Headers show

Commit Message

Ram Pai July 16, 2017, 3:56 a.m.
arch_pkeys_enabled() returns true if the cpu
supports protection key, and the kernel has it
enabled.

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

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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)