Well, anaconda doesn't run with the xen host kernel, so ... :)How does anaconda make the determination that it is running in a domU?Existence of /proc/xen/capabilities as Joel said
So the OP's question is answered, and also how to use the content, or lack thereof, of the capabilities file to make a determination outside of anaconda.
It's just curiosity at this point, but I'm looking for a chicken or an egg somewhere, in the loader maybe? /proc/xen/capabilities doesn't exist till the xen kernel is loaded. Where is the magic that knows to load a xen kernel during a domU install?
Hoping it's not a completely misguided question, Ed