From Fedora Project Wiki
Kernel
The Fedora 22 distribution is powered by Linux kernel 4.0 RC1.
- According to Linus Torvalds’ notes, it is a fairly small release, but not much smaller than the usual RC versions
Features
- Various vm cleanups, and the unification of the PROTNONE and NUMA handling for page tables.
- The final release of Linux kernel 4.0 will also include the highly anticipated live patching infrastructure.