The cool live kernel patching is available in Ubuntu 16.04 LTS. No consecutive reboot required after patching the kernel.
Refer the link up: http://www.cyberciti.biz/faq/howto-live-patch-ubuntu-linux-server-kernel-without-rebooting/
Refer the link up: http://www.cyberciti.biz/faq/howto-live-patch-ubuntu-linux-server-kernel-without-rebooting/