Re: [PATCH v4] acpi: Issue _OSC call for native thermal interrupt handling

From: Linda Knippers
Date: Fri Mar 18 2016 - 11:00:24 EST

On 3/17/2016 8:17 PM, Rafael J. Wysocki wrote:

>>>>>>> This change introduces a new function
>>>>>>> acpi_early_processor_set_osc(),
>>>>>>> which walks acpi name space and finds acpi processor object and
>>>>>>> set capability via _OSC method to take over thermal LVT.
>>>>>> Does this change just affect Skylake platforms or all platforms?
>>>>> Any platform which has Intel  Speed Shift Technology (aka HWP)
>>>>> feature present and enabled.
>> Could this be an unexpected change in behavior for platforms
>> with HWP that don't have this bug, assuming they would look at
>> the _OSC CPPP bit? That's actually my main concern here.
> Do you have any specific platforms in mind or just in general?

It's just general right now but as more HWP server platforms come out,
it may become specific.

-- ljk
> Thanks,
> Rafael