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

Janosch Frank
2020-04-23T09:10:30Z

Let's also test the stop portion of the "stop and store status" sigp
order.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
---
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();
}

--
2.25.1