libqos: Use explicit QTestState for remaining libqos operations

Drop one more client of global_qtest by teaching all remaining
libqos stragglers to pass in an explicit QTestState.  Change the
setting of global_qtest from being implicit in libqos' call to
qtest_start() to instead be explicit in all clients that are
still relying on global_qtest.

Note that qmp_execute() can be greatly simplified in the process,
and that we also get rid of interpolation of a JSON string into a
temporary variable when qtest_qmp() can do it more reliably.

Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Greg Kurz <groug@kaod.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/virtio-blk-test.c b/tests/virtio-blk-test.c
index 2ac64e5e25..9be9ffb378 100644
--- a/tests/virtio-blk-test.c
+++ b/tests/virtio-blk-test.c
@@ -77,6 +77,7 @@ static QOSState *pci_test_start(void)
         g_printerr("virtio-blk tests are only available on x86 or ppc64\n");
         exit(EXIT_FAILURE);
     }
+    global_qtest = qs->qts;
     unlink(tmp_path);
     g_free(tmp_path);
     return qs;