[PATCH v2 03/28] powerpc/book3s64/pkeys: Use execute_pkey_disable static key
Aneesh Kumar K.V
aneesh.kumar at linux.ibm.com
Sat May 2 21:22:04 AEST 2020
Use execute_pkey_disabled static key to check for execute key support instead
of pkey_disabled.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.ibm.com>
---
arch/powerpc/include/asm/pkeys.h | 10 +---------
arch/powerpc/mm/book3s64/pkeys.c | 5 ++++-
2 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/include/asm/pkeys.h b/arch/powerpc/include/asm/pkeys.h
index 47c81d41ea9a..09fbaa409ac4 100644
--- a/arch/powerpc/include/asm/pkeys.h
+++ b/arch/powerpc/include/asm/pkeys.h
@@ -126,15 +126,7 @@ static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
* Try to dedicate one of the protection keys to be used as an
* execute-only protection key.
*/
-extern int __execute_only_pkey(struct mm_struct *mm);
-static inline int execute_only_pkey(struct mm_struct *mm)
-{
- if (static_branch_likely(&pkey_disabled))
- return -1;
-
- return __execute_only_pkey(mm);
-}
-
+extern int execute_only_pkey(struct mm_struct *mm);
extern int __arch_override_mprotect_pkey(struct vm_area_struct *vma,
int prot, int pkey);
static inline int arch_override_mprotect_pkey(struct vm_area_struct *vma,
diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c
index bbba9c601e14..fed4f159011b 100644
--- a/arch/powerpc/mm/book3s64/pkeys.c
+++ b/arch/powerpc/mm/book3s64/pkeys.c
@@ -345,8 +345,11 @@ void thread_pkey_regs_init(struct thread_struct *thread)
write_uamor(default_uamor);
}
-int __execute_only_pkey(struct mm_struct *mm)
+int execute_only_pkey(struct mm_struct *mm)
{
+ if (static_branch_likely(&execute_pkey_disabled))
+ return -1;
+
return mm->context.execute_only_pkey;
}
--
2.26.2
More information about the Linuxppc-dev
mailing list