[ValdikSS]

swap requires MMU, so no, unfortunately. But there are tricks to have XIP userspace: cramfs supports it, as well as a special AXFS file system.

cramfs parses ELF files and marks XIP only a .text/ro segments of it, not the whole file.

https://github.com/npitre/cramfs-tools/commit/2325ed2de8fd17...

[actionfromafar]

Historically, Unix SVR7 and Minix had swap with no MMU. But Linux can't do it.