diff mbox series

[kvm-unit-tests,PULL,12/17] s390x: smp: Test local interrupts after cpu reset

Message ID 20200430152430.40349-13-david@redhat.com (mailing list archive)
State New, archived
Headers show
Series [kvm-unit-tests,PULL,01/17] MAINTAINERS: Add Janosch as a s390x maintainer | expand

Commit Message

David Hildenbrand April 30, 2020, 3:24 p.m. UTC 
From: Janosch Frank <frankja@linux.ibm.com>

Local interrupts (external and emergency call) should be cleared after
any cpu reset.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200429143518.1360468-5-frankja@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 s390x/smp.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
diff mbox series

Patch

diff --git a/s390x/smp.c b/s390x/smp.c
index 57eacb2..447b998 100644
--- a/s390x/smp.c
+++ b/s390x/smp.c
@@ -258,6 +258,19 @@  static void test_reset_initial(void)
 	report_prefix_pop();
 }
 
+static void test_local_ints(void)
+{
+	unsigned long mask;
+
+	/* 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;
@@ -266,10 +279,18 @@  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");
 	report_prefix_pop();
 }