emerge-webrsync
emerge gentoo-sources
cd /usr/src/linux
sudo -s
make oldconfig
make modules_prepare
make -j5 && make modules_install
make install
emerge -a @module-rebuild
eselect kernel set 2
grub-mkconfig -o /boot/grub/grub.cfg
reboot
.........
emerge -ac gentoo-sources:4.14.4
rm -r /usr/src/linux-4.14.4/
rm -r /lib/modules/4.14.4/
rm /boot/vmlinuz.old /boot/System.map.old /boot/config.old