Question: is unexec() more or less portable than CRIU? If CRIU is the more portable of the two (or if they're equivalent in both just basically working only on Linux), could unexec() be dropped in favor of just generating a CRIU process snapshot, and giving emacs a launch wrapper that restores from that snapshot?
Emacs unexec is mature (by decades), ported to 11 operating systems. CRIU is Linux-only, more or less experimental, and not included in mainstream stable distros. Does that answer your question?
