[tyingq]

μClinux, since there's no MMU.

[Endlessly]

μClinux is a variation of the Linux kernel, previously maintained as a fork, that targets microcontrollers without a memory management unit (MMU).

SOURCE: https://en.m.wikipedia.org/wiki/ΜClinux

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How uClinux provides MMU-less processors with an alternative https://www.eetimes.com/how-uclinux-provides-mmu-less-proces...