Re: [kvm-unit-tests PATCH v5 3/7] s390x: Stop the cpu that is executing exit()

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On 01/02/2020 16.28, Janosch Frank wrote:
> CPU 0 is not necessarily the CPU which does the exit if we ran into a
> test abort situation. So, let's ask stap() which cpu does the exit and
> stop it on exit.
> 
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> ---
>  lib/s390x/io.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/s390x/io.c b/lib/s390x/io.c
> index 32f09b5..e091c37 100644
> --- a/lib/s390x/io.c
> +++ b/lib/s390x/io.c
> @@ -46,6 +46,6 @@ void exit(int code)
>  	smp_teardown();
>  	printf("\nEXIT: STATUS=%d\n", ((code) << 1) | 1);
>  	while (1) {
> -		sigp(0, SIGP_STOP, 0, NULL);
> +		sigp(stap(), SIGP_STOP, 0, NULL);
>  	}
>  }

Right, smp_teardown stops already all CPUs except for the current one,
so this is the last one running here.

Reviewed-by: Thomas Huth <thuth@xxxxxxxxxx>




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