The QXL virtual GPU is found in the Red Hat Enterprise
Virtualisation system, and also in the spice project.
All questions regarding this software should be directed at the
Xorg mailing list:
https://lists.x.org/mailman/listinfo/xorg
The master development code repository can be found at:
https://gitlab.freedesktop.org/xorg/driver/xf86-video-qxl
Please submit bug reports and requests to merge patches there.
For patch submission instructions, see:
https://www.x.org/wiki/Development/Documentation/SubmittingPatches