Re: Regression in IO resource allocation

From: Rafael J. Wysocki
Date: Tue May 31 2016 - 18:32:25 EST

On Wed, Jun 1, 2016 at 12:31 AM, Rafael J. Wysocki <rafael@xxxxxxxxxx> wrote:
> On Tue, May 31, 2016 at 11:42 PM, Roland Dreier <roland@xxxxxxxxxxxxxxx> wrote:
>> On Tue, May 31, 2016 at 2:11 PM, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote:
>>> Can you please try the appended patch (untested)?
>> Thanks for the quick reply. Patch looks OK on my system... it boots
>> (which is very good :) and I see
>> system 00:01: [io 0x0400-0x047f] has been reserved
>> however I don't see the "ACPI CPU throttle" region reserved in
>> /proc/ioports... haven't debugged why acpi_processor_get_throttling()
>> isn't getting called or what is happening yet.
>> Will dig a bit deeper and let you know.
> It may not be called at all if _PTC is used on that system, for example.

I mean acpi_processor_get_throttling_fadt(), of course. :-)