qemu-iotests: flush after every test

This makes it possible to see what is happening, even if the output of
"make check-block" is not sent to a tty (for example if it is sent to
grep or tee).

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/tests/qemu-iotests/testrunner.py b/tests/qemu-iotests/testrunner.py
index a56b6da..0e29c2f 100644 (file)
--- a/tests/qemu-iotests/testrunner.py
+++ b/tests/qemu-iotests/testrunner.py
@@ -341,6 +341,7 @@ class TestRunner(ContextManager['TestRunner']):
             elif res.status == 'not run':
                 notrun.append(name)
 
+            sys.stdout.flush()
             if res.interrupted:
                 break