From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752320AbdFUOSy (ORCPT ); Wed, 21 Jun 2017 10:18:54 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:46184 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752075AbdFUOSw (ORCPT ); Wed, 21 Jun 2017 10:18:52 -0400 Subject: Re: [PATCH V6 0/2] powerpc/dlpar: Correct display of hot-add/hot-remove CPUs and memory To: Michael Ellerman , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Cc: Nathan Fontenot , ltc-virtual-io@lists.linux.ibm.com References: <8760fpu0mf.fsf@concordia.ellerman.id.au> From: Michael Bringmann Organization: IBM Linux Technology Center Date: Wed, 21 Jun 2017 09:18:44 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.0 MIME-Version: 1.0 In-Reply-To: <8760fpu0mf.fsf@concordia.ellerman.id.au> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 17062114-0004-0000-0000-0000126AF668 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007266; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000214; SDB=6.00877833; UDB=6.00437338; IPR=6.00657974; BA=6.00005434; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00015909; XFM=3.00000015; UTC=2017-06-21 14:18:46 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17062114-0005-0000-0000-00007FDBA753 Message-Id: <33eb7713-d75d-77ee-5326-2b9837893d0a@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-06-21_03:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1706210242 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org One of the patches was doubled and sent twice yesterday. Will update number regardless in future. On 06/21/2017 04:54 AM, Michael Ellerman wrote: > Michael Bringmann writes: > >> On Power systems with shared configurations of CPUs and memory, there >> are some issues with association of additional CPUs and memory to nodes >> when hot-adding resources. These patches address some of those problems. >> >> powerpc/hotplug: On systems like PowerPC which allow 'hot-add' of CPU >> or memory resources, it may occur that the new resources are to be >> inserted into nodes that were not used for these resources at bootup. >> In the kernel, any node that is used must be defined and initialized >> at boot. In order to meet both needs, this patch adds a new kernel >> command line option (numnodes=) for use by the PowerPC >> architecture-specific code that defines the maximum number of nodes >> that the kernel will ever need in its current hardware environment. >> The boot code that initializes nodes for PowerPC will read this value >> and use it to ensure that all of the desired nodes are setup in the >> 'node_possible_map', and elsewhere. >> >> powerpc/numa: Correct the currently broken capability to set the >> topology for shared CPUs in LPARs. At boot time for shared CPU >> lpars, the topology for each shared CPU is set to node zero, however, >> this is now updated correctly using the Virtual Processor Home Node >> (VPHN) capabilities information provided by the pHyp. The VPHN handling >> in Linux is disabled, if PRRN handling is present. >> >> Signed-off-by: Michael Bringmann >> >> Michael Bringmann (2): >> powerpc/hotplug: Add option to define max nodes allowing dynamic >> growth of resources. >> powerpc/numa: Update CPU topology when VPHN enabled >> --- >> Changes in V6: >> -- Reorder some code to better eliminate unused functions in >> conditional builds. > > What changed between yesterday's V6 and this V6? > > If you're going to resend, please bump the version number, we have tools > that parse the subject and version, and resending multiple times with > the same number breaks those. > > cheers > > -- Michael W. Bringmann Linux Technology Center IBM Corporation Tie-Line 363-5196 External: (512) 286-5196 Cell: (512) 466-0650 mwb@linux.vnet.ibm.com