From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S969913AbdEYRhu (ORCPT ); Thu, 25 May 2017 13:37:50 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:52631 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933520AbdEYRhs (ORCPT ); Thu, 25 May 2017 13:37:48 -0400 In-Reply-To: <20170525171932.29159.89311.stgit@ltcalpine2-lp20.aus.stglabs.ibm.com> To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Cc: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Reza Arbab , Thomas Gleixner , Bharata B Rao , Balbir Singh , Michael Bringmann , Shailendra Singh , "Aneesh Kumar K.V" , Sebastian Andrzej Siewior From: Michael Bringmann Subject: [PATCH V2 2/2]: powerpc/hotplug/mm: Fix hot-add memory node assoc Organization: IBM Linux Technology Center Date: Thu, 25 May 2017 12:37:40 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 17052517-0020-0000-0000-00000C04C45F X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007116; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000212; SDB=6.00865532; UDB=6.00429781; IPR=6.00645309; BA=6.00005375; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00015581; XFM=3.00000015; UTC=2017-05-25 17:37:45 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17052517-0021-0000-0000-00005C7C8534 Message-Id: <9b006866-5a8e-dc05-d603-bfe8eb02eef2@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-05-25_13:,, 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-1705250326 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Removing or adding memory via the PowerPC hotplug interface shows anomalies in the association between memory and nodes. The code was updated to ensure that all nodes found at boot are still available to subsequent DLPAR hotplug-memory operations, even if they are not needed at boot time. Signed-off-by: Michael Bringmann --- Changes in V2: -- Simplify patches to ensure more nodes in possible map, removing code from PowerPC numa.c that constrained possible map to size of online map. --- arch/powerpc/mm/numa.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 15c2dd5..18f3038 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -907,13 +907,6 @@ void __init initmem_init(void) memblock_dump_all(); - /* - * Reduce the possible NUMA nodes to the online NUMA nodes, - * since we do not support node hotplug. This ensures that we - * lower the maximum NUMA node ID to what is actually present. - */ - nodes_and(node_possible_map, node_possible_map, node_online_map); - for_each_online_node(nid) { unsigned long start_pfn, end_pfn;