From: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
the stfl wrapper in lib/s390x/asm/facility.h was lacking the "memory"
clobber in the inline asm.
Reviewed-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Message-Id: <20200120184256.188698-4-imbrenda@xxxxxxxxxxxxx>
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
lib/s390x/asm/facility.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/s390x/asm/facility.h b/lib/s390x/asm/facility.h
index 5103dd4..e34dc2c 100644
--- a/lib/s390x/asm/facility.h
+++ b/lib/s390x/asm/facility.h
@@ -24,7 +24,7 @@ static inline bool test_facility(int nr)
static inline void stfl(void)
{
- asm volatile(" stfl 0(0)\n");
+ asm volatile(" stfl 0(0)\n" : : : "memory");
}
static inline void stfle(uint8_t *fac, unsigned int len)
--
2.24.1
