Hello,
I'm having issues of /boot being too small on a system installed 1.5 years ago (running on a raspberry pi) following the website's tutorial. I did not manually modify mkinitpcio's config. As of today, the install tutorial on archlinuxarm.org still indicates to create a 100M partition. The archlinux wiki suggests using a size of at least 200 MiB for the boot partition.
May I suggest modifying the tutorial to use a bigger size for the boot partition?
(btw, I temporarily fixed the problem by using xz compression instead of gzip, but that's not what I want to discuss here)