qtest: Use -display none by default

This avoids each test needing to add it to suppress windows popping up.

[Commit 7ceeedd016facf8d58e14a0d1417fa7225d71072 ("blockdev-test: add
test case for drive_add duplicate IDs") and commit
43cd209803d6cffb1e1a028c9ff2fd0ff4fce954 ("qdev-monitor-test: add
device_add leak test cases") added qtest tests without specifying
-display none.

As a result, "make check" now tries to use graphics (GTK or SDL).  Since
graphics are not used by the test and inappropriate for headless "make
check" runs, add the missing -display none.

This fixes "make check" in the QEMU buildbot.
-- Stefan]

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/libqtest.c b/tests/libqtest.c
index 83424c3c6b..359d571a06 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -135,6 +135,7 @@ QTestState *qtest_init(const char *extra_args)
                                   "-qmp unix:%s,nowait "
                                   "-pidfile %s "
                                   "-machine accel=qtest "
+                                  "-display none "
                                   "%s", qemu_binary, s->socket_path,
                                   s->qmp_socket_path, pid_file,
                                   extra_args ?: "");