Subject: Re: [PATCH RFC] ACPI: processor: idle: Do not propagate acpi_processor_ffh_lpi_probe() -ENODEV

From: Breno Leitao <[email-masked]>
Date: Tue, 14 Apr 2026 06:14:19 -0700

Hello Sudeep,

On Tue, Apr 14, 2026 at 01:25:53PM +0100, Sudeep Holla wrote:
> So while I understand that the kernel did not report an error previously, that
> does not mean the _LPI table is merely moot on this platform when it contains
> only a WFI state.

Can you clarify whether datacenter ARM systems are expected to expose
deeper idle states beyond WFI in their _LPI tables?

Backing up, I'm observing 72 pr_err() messages during boot on these
hosts and trying to determine whether this indicates a firmware issue or
if the kernel needs adjustment.