[libvirt-users] How can we achieve vga emulation over a serial port in libvirt

Hi For the latest seabios version, it said: Support for vga emulation over a serial port in SeaBIOS (sercon). So I want to know how can I find the application of this feature in libvirt? And whether my understanding is correct? There are no related instruction on the website: https://libvirt.org/ My understanding: (1) The feature means: we can set this the IO address of a serial port to "video" element to enable SeaBIOS' VGA adapter emulation on the given serial port. (2) Libvirt XML examples and with this xml the guest can start successfully: <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </controller> <video> <model type='vga' vram='16384' heads='1' primary='yes'/> <address type='virtio-serial' controller='0' bus='0' port='3'/> </video> Thank in advance. Best Regards Meina Li