Okay, if so, I prefer 1.2+ to ensure -device VGA work as
expected.
A question here, all of these four vga device (VGA, cirrus-vga,
vmware-svga, qxl-vga)
has existed and been supported since 1.2 QEMU version, is it right?
Yes. qxl + qxl-vga have a compile time dependency on spice though, so
they might not be present. I expect there already is a spice support
check in libvirt, so I think you don't have to care in this patch series.
cheers,
Gerd