No idea what the fairydust kernel is.

For more context, I gooled around and found this Phoronix article: https://www.phoronix.com/news/Asahi-Linux-EOY-2025-CCC

> On the display side, Asahi Linux developers have been working on the DisplayPort connectivity. For that there are now experimental DisplayPort patches for Asahi Linux via their "fairydust" tree.

That's great news!