Beside Ubuntu i also have an Arch installation. I plan to maintain the grub-configuration from my Ubuntu. The whole update-grub - grub-mkconfig - os-prober-chain works just fine.
I know I can set GRUB_CMDLINE_LINUX for options to be passed to the kernel in /etc/default/grub. But how would I possibly specify that per kernel / kernels on a specific partition?
Neat would be having a little text-file beside a kernel image that is evaluated by the tool-chain, but i guess that's some serious hacking through the chain.