Re: [PATCH 06/10] microblaze: Add sync to tlb operations

[Arnd Bergmann]

On Wed, Feb 12, 2020 at 9:58 AM Michal Simek <michal.simek@xxxxxxxxxx> wrote:
> diff --git a/arch/microblaze/kernel/misc.S b/arch/microblaze/kernel/misc.S
> index 6759af688451..1228a09d8109 100644
> --- a/arch/microblaze/kernel/misc.S
> +++ b/arch/microblaze/kernel/misc.S
> @@ -39,7 +39,7 @@ _tlbia_1:
>         rsubi   r11, r12, MICROBLAZE_TLB_SIZE - 1
>         bneid   r11, _tlbia_1 /* loop for all entries */
>         addik   r12, r12, 1
> -       /* sync */
> +       mbar    1 /* sync */
>         rtsd    r15, 8
>         nop
>         .size  _tlbia, . - _tlbia

Is there any effect on non-SMP systems?

     Arnd