Ok, then why would you compare hotplugging (typically used to replace faulty parts) with power management?

CPU Hotplug is a long established name for this process, whether for correctness or power, particularly in Linux Kernel contexts.

Absolutely nobody hotplugs a CPU for power management.

Sure man, your call.

https://developer.arm.com/documentation/den0024/a/Power-Mana...

Sigh… I guess we’re doing this!

The term cpu-hotplug in the arm world almost never means hot-adding a new package/die to the platform, we usually mean taking CPUs online/offline for power management. e.g. cpuhp_offline_cpu_device()

https://www.spinics.net/lists/arm-kernel/msg739722.html

That's marketing overloading a term, not technology.

The mainframes do both. The hotplug part just illustrating how far it can go. How isolated it really is.

Because they're both versions of "turn parts on and off at will"?