On 24.03.20 09:12, Janosch Frank wrote:
> Local interrupts (external and emergency call) should be cleared after
> any cpu reset.
>
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> ---
> s390x/smp.c | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
> diff --git a/s390x/smp.c b/s390x/smp.c
> index 8a6cd1d8b17d76c6..a8e3dd7aac0c788c 100644
> --- a/s390x/smp.c
> +++ b/s390x/smp.c
> @@ -243,6 +243,20 @@ static void test_reset_initial(void)
> report_prefix_pop();
> }
>
> +static void test_local_ints(void)
> +{
> + unsigned long mask;
> +
> + expect_ext_int();
> + /* Open masks for ecall and emcall */
> + ctl_set_bit(0, 13);
> + ctl_set_bit(0, 14);
> + mask = extract_psw_mask();
> + mask |= PSW_MASK_EXT;
> + load_psw_mask(mask);
> + set_flag(1);
> +}
> +
> static void test_reset(void)
> {
> struct psw psw;
> @@ -251,10 +265,18 @@ static void test_reset(void)
> psw.addr = (unsigned long)test_func;
>
> report_prefix_push("cpu reset");
> + sigp(1, SIGP_EMERGENCY_SIGNAL, 0, NULL);
> + sigp(1, SIGP_EXTERNAL_CALL, 0, NULL);
> smp_cpu_start(1, psw);
>
> sigp_retry(1, SIGP_CPU_RESET, 0, NULL);
> report(smp_cpu_stopped(1), "cpu stopped");
> +
> + set_flag(0);
> + psw.addr = (unsigned long)test_local_ints;
> + smp_cpu_start(1, psw);
> + wait_for_flag();
> + report(true, "local interrupts cleared");
How can you be sure they were actually cleared/delivered?
--
Thanks,
David / dhildenb
