Re: [Minios-devel] [UNIKRAFT PATCHv6 33/37] plat/kvm: Implement time_block_until for arm64

[Simon Kuenzer <simon.kuenzer@xxxxxxxxx>]

Reviewed-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>

On 14.09.2018 09:57, Wei Chen wrote:
> From: Wei Chen <Wei.Chen@xxxxxxx>
>
> As we haven't implement full functions for timer for arm64.
> But this function is needed by Unikraft. So we impplement
> a temporary function to make compiler happy.
>
> Signed-off-by: Wei Chen <Wei.Chen@xxxxxxx>
> ---
>   plat/common/arm/time.c | 15 +++++++++++++++
>   1 file changed, 15 insertions(+)
>
> diff --git a/plat/common/arm/time.c b/plat/common/arm/time.c
> index 93b0521..8457511 100644
> --- a/plat/common/arm/time.c
> +++ b/plat/common/arm/time.c
> @@ -139,6 +139,21 @@ static int generic_timer_init(void)
>         return 0;
>   }
>   
> +long sched_have_pending_events;
> +
> +void time_block_until(__snsec until)
> +{
> +       while ((__snsec) ukplat_monotonic_clock() < until) {
> +               /*
> +                * TODO:
> +                * As we haven't support interrupt on Arm, so we just
> +                * use busy polling for now.
> +                */
> +               if (ukarch_test_and_clr_bit(0, &sched_have_pending_events))
> +               break;
> +       }
> +}
> +
>   /* return ns since time_init() */
>   __nsec ukplat_monotonic_clock(void)
>   {
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