Or you can just sign your Linux kernel from macOS recovery mode, which is what the Asahi Linux installer does already. No need for weird hacks.
You also don't have "kernel access" in macOS. After boot, the memory region corresponding to the macOS kernel is marked as read-only at the memory controller level.
You also don't have "kernel access" in macOS. After boot, the memory region corresponding to the macOS kernel is marked as read-only at the memory controller level.