- Introduced criu-image-streamer (also see https://github.com/checkpoint-restore/criu-image-streamer).
- Added MIPS support.
- Allow checkpointing out of existing PID namespace and restoring into existing PID namespace.
- Added additional file validation mechanisms (buildid in addition to filesize).
- Added support to checkpoint and restore BPF hash maps (BPF_MAP_TYPE_HASH) and array maps (BPF_MAP_TYPE_ARRAY).
- Initial cgroups v2 support
- Many fixes here and there
- Additional libcriu interfaces (orphan_pts_master, version, FD handling)
- Use the new mount API