Having your code accepted to Linux mainline is the certification in this paraphrase.
Re:Asahi Linux Progress Linux 7.3
by yjftsjthsd-h on Saturday November 07, 2026 @08:15PM
(#50409644)
Mainline Linux doesn't run on the M4. So in your metaphor, it's more like being able to choose between a microwave of uncertain quality and not having a microwave.
I must have missed that; could you share a link to the Linux kernel that's tested and certified as functional on M4 hardware?