On 1/20/20 7:42 PM, Claudio Imbrenda wrote:
> the stfl wrapper in lib/s390x/asm/facility.h was lacking the "memory"
> clobber in the inline asm.
> 
> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
> ---
>  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)
> 

Reviewed-by: Janosch Frank <frankja@linux.ibm.com>