[kvm-unit-tests PULL 11/17] s390x: smp: Test stop and store status on a running and stopped cpu

[David Hildenbrand <david@xxxxxxxxxx>]

From: Janosch Frank <frankja@xxxxxxxxxxxxx>

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>
Message-Id: <20200429143518.1360468-4-frankja@xxxxxxxxxxxxx>
Signed-off-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 bf082d1..57eacb2 100644
--- a/s390x/smp.c
+++ b/s390x/smp.c
@@ -76,6 +76,18 @@ 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);
@@ -83,6 +95,8 @@ static void test_stop_store_status(void)
 	report(lc->prefix_sa == (uint32_t)(uintptr_t)cpu->lowcore, "prefix");
 	report(lc->grs_sa[15], "stack");
 	report_prefix_pop();
+
+	report_prefix_pop();
 }
 
 static void test_store_status(void)
-- 
2.25.3