These steps are partly dependent on my personal Gentoo installation and should not be viewed as a general recipe. Please refer to the official Gentoo wiki on the topic instead. I’m using genkernel to generate an initramfs and GRUB2 as my boot loader.
With all the noise lately about Dirty COW (CVE-2016-5195) and the lack of patched kernels from Slackware’s “Benevolent Dictator for Life”, I decided it was time to roll up the sleeves and get it done. Since Slackware doesn’t have a “sophisticated” build system and all that grease, it’s a trivial matter to step up to the plate and take responsibility for your own system. I’ll be using “vanilla-kernelversion” as my tag for the kernel and initrd. Also notice that I build my kernels as a normal user.