From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752048Ab2GPOz2 (ORCPT ); Mon, 16 Jul 2012 10:55:28 -0400 Received: from g1t0028.austin.hp.com ([15.216.28.35]:25356 "EHLO g1t0028.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751293Ab2GPOz0 (ORCPT ); Mon, 16 Jul 2012 10:55:26 -0400 Message-ID: <1342450244.3010.3.camel@misato.fc.hp.com> Subject: Re: [PATCH v6 0/6] ACPI: Add _OST support for ACPI hotplug From: Toshi Kani To: Prarit Bhargava 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" Date: Mon, 16 Jul 2012 08:50:44 -0600 In-Reply-To: <50040E77.9060400@redhat.com> References: <1340743374-18535-1-git-send-email-toshi.kani@hp.com> <50040E77.9060400@redhat.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3 (3.2.3-1.fc16) Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2012-07-16 at 08:52 -0400, Prarit Bhargava wrote: > 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 Hi Prarit, That's great! Thanks a lot! -Toshi > > P.