The real realtime preemption end game

This would maybe be doable if you have control over all stages of the boot process and the environment the kernel runs in. I guess it would be easier to be introduced in virtualized environments as a memory region could be mapped into a file on the host where it could be synced to disk before a restart. Memory integrity could be checked on that level as well, for example for the case that the host has an uncontrolled reboot.