On: 20 years later, real-time Linux makes it to the ke...

[londons_explore]

> the Linux kernel is fully preemptible,

So this means there are no critical sections or interrupts being disabled anywhere in kernel code when PREEMPT_RT is enabled?

[oasisaimlessly → londons_explore]

I would assume it means something a bit weaker: that all critical sections have a bounded length, being guaranteed to end after a given finite number of clock cycles.