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

From: Borislav Petkov
Date: Thu Sep 22 2022 - 11:36:35 EST


On Thu, Sep 22, 2022 at 05:21:21PM +0200, Rafael J. Wysocki wrote:
> Well, it can be forced to use ACPI idle instead.

Yeah, I did that earlier. The dummy IO read in question costs ~3K on
average on my Coffeelake box here.

--
Regards/Gruss,
Boris.

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