Subject: [PATCH 1/2] powerpc/core-pkeys: execute-permission on keys are disabled by default

From: Ram Pai <[email-masked]>
Date: Mon, 25 Jun 2018 19:16:15 -0700

Only when the key is allocated, its permission are enabled.

Signed-off-by: Ram Pai <[email-masked]>
---
 tools/testing/selftests/powerpc/ptrace/core-pkey.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/tools/testing/selftests/powerpc/ptrace/core-pkey.c b/tools/testing/selftests/powerpc/ptrace/core-pkey.c
index 36bc312..b353d86 100644
--- a/tools/testing/selftests/powerpc/ptrace/core-pkey.c
+++ b/tools/testing/selftests/powerpc/ptrace/core-pkey.c
@@ -140,6 +140,10 @@ static int child(struct shared_info *info)
 
 	if (disable_execute)
 		info->iamr |= 1ul << pkeyshift(pkey1);
+	else
+		info->iamr &= ~(1ul << pkeyshift(pkey1));
+	info->iamr &= ~(1ul << pkeyshift(pkey2) | 1ul << pkeyshift(pkey3));
+
 
 	info->uamor |= 3ul << pkeyshift(pkey1) | 3ul << pkeyshift(pkey2);
 
-- 
1.7.1