Re: [PATCH v2 03/10] s390x: smp: Test stop and store status on a running and stopped cpu

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On 23.04.20 11:10, Janosch Frank wrote:
> Let's also test the stop portion of the "stop and store status" sigp
> order.
> 
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>

Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>

> ---
>  s390x/smp.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/s390x/smp.c b/s390x/smp.c
> index 95df8c4..8a6cd1d 100644
> --- a/s390x/smp.c
> +++ b/s390x/smp.c
> @@ -76,12 +76,26 @@ static void test_stop_store_status(void)
>  	struct lowcore *lc = (void *)0x0;
>  
>  	report_prefix_push("stop store status");
> +	report_prefix_push("running");
> +	smp_cpu_restart(1);
>  	lc->prefix_sa = 0;
>  	lc->grs_sa[15] = 0;
>  	smp_cpu_stop_store_status(1);
>  	mb();
>  	report(lc->prefix_sa == (uint32_t)(uintptr_t)cpu->lowcore, "prefix");
>  	report(lc->grs_sa[15], "stack");
> +	report(smp_cpu_stopped(1), "cpu stopped");
> +	report_prefix_pop();
> +
> +	report_prefix_push("stopped");
> +	lc->prefix_sa = 0;
> +	lc->grs_sa[15] = 0;
> +	smp_cpu_stop_store_status(1);
> +	mb();
> +	report(lc->prefix_sa == (uint32_t)(uintptr_t)cpu->lowcore, "prefix");
> +	report(lc->grs_sa[15], "stack");
> +	report_prefix_pop();
> +
>  	report_prefix_pop();
>  }
>  
> 


-- 
Thanks,

David / dhildenb




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