Re: [PATCH] ACPI: processor_idle: Skip dummy wait for processors based on the Zen microarchitecture

From: Peter Zijlstra
Date: Wed Sep 21 2022 - 11:01:50 EST


On Wed, Sep 21, 2022 at 12:06:38PM +0530, K Prateek Nayak wrote:
> Processors based on the Zen microarchitecture support IOPORT based deeper
> C-states.

I've just gotta ask; why the heck are you using IO port based idle
states in 2022 ?!?! You have have MWAIT, right?