From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id 1D725B70AD for ; Sat, 12 Sep 2009 06:57:11 +1000 (EST) Received: from e8.ny.us.ibm.com (e8.ny.us.ibm.com [32.97.182.138]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e8.ny.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 8FD45DDD04 for ; Sat, 12 Sep 2009 06:57:10 +1000 (EST) Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236]) by e8.ny.us.ibm.com (8.14.3/8.13.1) with ESMTP id n8BKuUlO002342 for ; Fri, 11 Sep 2009 16:56:30 -0400 Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by d01relay04.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id n8BKv6Ac209836 for ; Fri, 11 Sep 2009 16:57:06 -0400 Received: from d01av01.pok.ibm.com (loopback [127.0.0.1]) by d01av01.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id n8BKv5Eb028770 for ; Fri, 11 Sep 2009 16:57:05 -0400 Message-ID: <4AAAB99B.2080503@austin.ibm.com> Date: Fri, 11 Sep 2009 15:56:59 -0500 From: Nathan Fontenot MIME-Version: 1.0 To: linuxppc-dev@ozlabs.org Subject: [PATCH 0/5] kernel handling of dynamic logical partitioning Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: lkml@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The Dynamic Logical Partitioning (DLPAR) capabilities of the powerpc pseries platform allows for the addition and removal of resources (i.e. cpus, memory, pci devices) from a partition. The removal of a resource involves removing the resource's node from the device tree and then returning the resource to firmware via the rtas set-indicator call. To add a resource, it is first obtained from firmware via the rtas set-indicator call and then a new device tree node is created using the ibm,configure-coinnector rtas call and added to the device tree. The following set of patches implements the needed infrastructure to have the kernel handle the DLPAR addition and removal of memory and cpus (other DLPAR'able items to follow in future patches). The framework for this is to create a set of probe/release sysfs files in pseries that will add or remove the cpu or memory to the system. The majority of the code is powerpc/pseries specific except for PATCH 3/5, so I am cc'ing lkml. Patches include in this set: 1/5 - DLPAR infracstructure for powerpc/pseries platform. 2/5 - Move the of_drconf_cell struct to prom.h 3/5 - Export the memory sysdev class 4/5 - Memory DLPAR handling 5/5 - CPU DLPAR handling -Nathan Fontenot