[kvm-unit-tests PATCH v2 10/12] arm64: gic: its-trigger: Don't trigger the LPI while it is pending

[Alexandru Elisei <alexandru.elisei@arm.com>]

The its-trigger test checks that LPI 8195 is not delivered to the CPU while
it is disabled at the ITS level. After that it is re-enabled and the test
checks that the interrupt is properly asserted. After it's re-enabled and
before the stats are examined, the test triggers the interrupt again, which
can lead to the same interrupt being delivered twice: once after the
configuration invalidation and before the INT command, and once after the
INT command.

Get rid of the INT command after the interrupt is re-enabled to prevent the
LPI from being asserted twice and add a separate check to test that the INT
command still works for the now re-enabled LPI 8195.

CC: Auger Eric <eric.auger@redhat.com>
Suggested-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
---
 arm/gic.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arm/gic.c b/arm/gic.c
index fb91861900b7..aa3aa1763984 100644
--- a/arm/gic.c
+++ b/arm/gic.c
@@ -805,6 +805,9 @@ static void test_its_trigger(void)
 
 	/* Now call the invall and check the LPI hits */
 	its_send_invall(col3);
+	lpi_stats_expect(3, 8195);
+	check_lpi_stats("dev2/eventid=20 pending LPI is received");
+
 	lpi_stats_expect(3, 8195);
 	its_send_int(dev2, 20);
 	check_lpi_stats("dev2/eventid=20 now triggers an LPI");
-- 
2.29.2