From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753017AbbEHPck (ORCPT ); Fri, 8 May 2015 11:32:40 -0400 Received: from foss.arm.com ([217.140.101.70]:53340 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751677AbbEHPcg (ORCPT ); Fri, 8 May 2015 11:32:36 -0400 Message-ID: <554CD711.3090903@arm.com> Date: Fri, 08 May 2015 16:32:33 +0100 From: Sudeep Holla User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: "Rafael J. Wysocki" , "hanjun.guo@linaro.org" CC: Sudeep Holla , "linux-acpi@vger.kernel.org" , "linux-pm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "ahs3@redhat.com" , Lorenzo Pieralisi Subject: Re: [PATCH RFC 1/5] ACPI / containers : add support for ACPI0010 processor container References: <1430922690-6966-1-git-send-email-sudeep.holla@arm.com> <1430922690-6966-2-git-send-email-sudeep.holla@arm.com> <554C78C2.706@linaro.org> <2334052.J3vzukF2MM@vostro.rjw.lan> In-Reply-To: <2334052.J3vzukF2MM@vostro.rjw.lan> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/05/15 15:06, Rafael J. Wysocki wrote: > On Friday, May 08, 2015 04:50:10 PM Hanjun Guo wrote: >> Hi Sudeep, >> >> On 2015年05月06日 22:31, Sudeep Holla wrote: >>> ACPI 6.0 adds support for optional processor container device which may >>> contain child objects that are either processor devices or other processor >>> containers. This allows representing hierarchical processor topologies. >>> >>> It is declared using the _HID of ACPI0010. It may also have _CID of >>> PNP0A05, which represents a generic container device. >> >> Container device helps support hotplug of nodes, CPUs, and memory, >> does this container device ACPI0010 used for the same purpose? > > That's correct and the patch isn't. > Thanks Rafael for the clarification. Just curious if the firmware adds _CID of PNP0A05 to support OS that don't parse processor containers, will the current code not create containers using _CID ? Regards, Sudeep