[alnwlsn]

I think TempleOS also worked like this, though its certainly better known for its "other" features.

edit: I missed it was linked on the above page

[rep_lodsb]

In TempleOS, everything runs in ring 0, but that's not the same as doing protection in software (which would require disallowing any native code not produced by some trusted translator). It simply means there's no protection at all.

[ASalazarMX]

Very fitting if that was intended to be protection by faith.