From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753450Ab2GPMwX (ORCPT ); Mon, 16 Jul 2012 08:52:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51569 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753117Ab2GPMwV (ORCPT ); Mon, 16 Jul 2012 08:52:21 -0400 Message-ID: <50040E77.9060400@redhat.com> Date: Mon, 16 Jul 2012 08:52:07 -0400 From: Prarit Bhargava User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110419 Red Hat/3.1.10-1.el6_0 Thunderbird/3.1.10 MIME-Version: 1.0 To: "Kani, Toshimitsu" CC: "lenb@kernel.org" , "linux-acpi@vger.kernel.org" , "bhelgaas@google.com" , "shuahkhan@gmail.com" , "liuj97@gmail.com" , "andi@firstfloor.org" , "isimatu.yasuaki@jp.fujitsu.com" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v6 0/6] ACPI: Add _OST support for ACPI hotplug References: <1340743374-18535-1-git-send-email-toshi.kani@hp.com> In-Reply-To: <1340743374-18535-1-git-send-email-toshi.kani@hp.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/-10/-28163 02:59 PM, Kani, Toshimitsu wrote: > * This version updates to use pr_ over printk to accommodate > checkpatch update since this patchset was accepted in -next. > > This patchset supports ACPI OSPM Status Indication (_OST) method for > ACPI CPU/memory/container hotplug operations and sysfs eject. After > an ACPI hotplug operation has completed, OSPM calls _OST to indicate > the result of the operation to the platform. If a platform does not > support _OST, this patchset has no effect on the platform. > > This _OST support is enabled when all relevant ACPI hotplug operations, > such as CPU, memory and container hotplug, are enabled. This assures > consistent behavior among the hotplug operations with regarding the > _OST support. > > Some platforms may require the OS to support _OST in order to support > ACPI hotplug operations. For example, if a platform has the management > console where user can request a hotplug operation from, this _OST > support would be required for the management console to show the result > of the hotplug request to user. > > The _OST definition can be found in section 6.3.5 of ACPI 5.0 spec. > The HPPF spec below also describes hotplug flows with _OST. > > DIG64 Hot-Plug & Partitioning Flow (HPPF) Specification R1.0 > http://www.dig64.org/home/DIG64_HPPF_R1_0.pdf > > The changes have been tested with simulated _OST methods. > > v6: > - Updated to use pr_ over printk. > > v5: > - Updated change log in patch 5/6. > > v4: > - Removed CONFIG_ACPI_HOTPLUG_OST option. > > v3: > - Added more descriptions to the change logs. > > v2: > - Added CONFIG_ACPI_HOTPLUG_OST option. > - Added _OST support for container hotplug and sysfs eject. > - Reordered patchset to enable _OST support bit of _OSC in the > last patch. > > --- > Toshi Kani (6): > ACPI: Add an interface to evaluate _OST > ACPI: Add _OST support for sysfs eject > ACPI: Add _OST support for ACPI CPU hotplug > ACPI: Add _OST support for ACPI memory hotplug > ACPI: Add _OST support for ACPI container hotplug > ACPI: Set hotplug _OST support bit to _OSC I have a few systems on which I can do some _OST CPU and Memory hotplug. These systems are newer Intel systems in which ACPI events can be triggered via switches to add CPUs. I tested this patchset with CPU _add_ and haven't seen any issues. So... Tested-by: Prarit Bhargava P.