From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f200.google.com (mail-pf0-f200.google.com [209.85.192.200]) by kanga.kvack.org (Postfix) with ESMTP id 179796B0253 for ; Fri, 12 Aug 2016 13:24:14 -0400 (EDT) Received: by mail-pf0-f200.google.com with SMTP id o124so3135815pfg.1 for ; Fri, 12 Aug 2016 10:24:14 -0700 (PDT) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com. [148.163.156.1]) by mx.google.com with ESMTPS id k82si9821241pfb.180.2016.08.12.10.24.13 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 12 Aug 2016 10:24:13 -0700 (PDT) Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u7CHKZhr087179 for ; Fri, 12 Aug 2016 13:24:12 -0400 Received: from e34.co.us.ibm.com (e34.co.us.ibm.com [32.97.110.152]) by mx0a-001b2d01.pphosted.com with ESMTP id 24s2v8gjbn-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Fri, 12 Aug 2016 13:24:12 -0400 Received: from localhost by e34.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 12 Aug 2016 11:24:11 -0600 Date: Fri, 12 Aug 2016 12:24:03 -0500 From: Reza Arbab Subject: Re: [PATCH 3/4] powerpc/mm: allow memory hotplug into a memoryless node References: <1470680843-28702-1-git-send-email-arbab@linux.vnet.ibm.com> <1470680843-28702-4-git-send-email-arbab@linux.vnet.ibm.com> <7d943111-d243-ffb3-ff5f-6d712c268e67@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <7d943111-d243-ffb3-ff5f-6d712c268e67@gmail.com> Message-Id: <20160812172402.GA31526@arbab-vm.austin.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Balbir Singh Cc: Rob Herring , Mark Rutland , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Jonathan Corbet , Bharata B Rao , Nathan Fontenot , devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org On Fri, Aug 12, 2016 at 11:50:43AM +1000, Balbir Singh wrote: >On 09/08/16 04:27, Reza Arbab wrote: >> Remove the check which prevents us from hotplugging into an empty node. > >Do we want to do this only for ibm,hotplug-aperture compatible ranges? We could, but since past discussions and current testing have been unable to justify preventing hotplug to a memoryless node in the first place, I'm inclined to keep things simple. If some edge case is discovered, making it conditional as you describe will be a good solution. Thanks for your review! A v2 of this set is pending my investigation of Michael's suggestion to get node hotadd working. -- Reza Arbab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org