The new Linux kernel update integrates support for using persistent storage as regular system memory, a new Linux Security Module (LSM), live patching, as well as multiple minor tweaks and fixes. All these will be included in the first point release that should go live later this month, but those in a hurry can grab the sources and compile the new kernel right now.
https://www.notebookcheck.net/The-Linux-kernel-update-5-1-comes-with-live-patching-multiple-performance-and-security-improvements.420255.0.html