This explains why alyssa rosenzweig (from asahi linux) was paid for so long by Valve. She worked on FEX.

What's fex? I wasn't able to google search it (didn't try too hard admittedly)

x86 to arm compatibility layer they are using to run windows games on the machine/frame

Steam Machine is x86_64

	▲	dathinab 7 hours ago \| parent [-]
		The VR headset isn't and it's cable of both running games standalone and displaying games through the dongle from whatever PC you run.