qemu_spice_create_update() must aquire the global qemu mutex to
make sure DisplayState doesn't change while we are accessing it.
Once this is in place the private lock is pretty pointless as
everything it protects is covered by the global qemu mutex now.
Drop it.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
With that patch applied you'll actually see the guests screen in the
spice client. This does *not* bring qxl and full spice support though.
This is basically the qxl vga mode made more generic, so it plays
together with any qemu-emulated gfx card. You can display stdvga or
cirrus via spice client. You can have both vnc and spice enabled and
clients connected at the same time.