Some guests behave differently when no VGA is detected. Add a variable
to allow override the "none" default.

Signed-off-by: Fam Zheng <famz@redhat.com>
---
 scripts/qemu.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/qemu.py b/scripts/qemu.py
index 880e3e8219..e5f314efdb 100644
--- a/scripts/qemu.py
+++ b/scripts/qemu.py
@@ -39,6 +39,7 @@ class QEMUMachine(object):
         self._iolog = None
         self._socket_scm_helper = socket_scm_helper
         self._debug = debug
+        self._vga = "none"
 
     # This can be used to add an unused monitor instance.
     def add_monitor_telnet(self, ip, port):
@@ -111,7 +112,7 @@ class QEMUMachine(object):
             moncdev = 'socket,id=mon,path=%s' % self._monitor_address
         return ['-chardev', moncdev,
                 '-mon', 'chardev=mon,mode=control',
-                '-display', 'none', '-vga', 'none']
+                '-display', 'none', '-vga', self._vga]
 
     def _pre_launch(self):
         self._qmp = qmp.qmp.QEMUMonitorProtocol(self._monitor_address, server=True,
-- 
2.13.4

On Thu, Aug 17, 2017 at 10:47:38AM +0800, Fam Zheng wrote:
> Some guests behave differently when no VGA is detected. Add a variable
> to allow override the "none" default.
> 
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
>  scripts/qemu.py | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>