[no_time]

>eXecute-in-place supported

Losing this when you load ELFs is kind of a bummer. Probably a dumb question but I wonder if it'd be possible to only swap in the parts of the binary that are needed at any given time.

[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.