Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756178AbcJGGkj (ORCPT ); Fri, 7 Oct 2016 02:40:39 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:51237 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752398AbcJGGkc (ORCPT ); Fri, 7 Oct 2016 02:40:32 -0400 From: "Aneesh Kumar K.V" To: Reza Arbab , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Rob Herring , Frank Rowand , Andrew Morton Cc: Bharata B Rao , Nathan Fontenot , Stewart Smith , Alistair Popple , Balbir Singh , Tang Chen , linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v4 5/5] mm: enable CONFIG_MOVABLE_NODE on non-x86 arches In-Reply-To: <1475778995-1420-6-git-send-email-arbab@linux.vnet.ibm.com> References: <1475778995-1420-1-git-send-email-arbab@linux.vnet.ibm.com> <1475778995-1420-6-git-send-email-arbab@linux.vnet.ibm.com> Date: Fri, 07 Oct 2016 12:10:21 +0530 MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16100706-0044-0000-0000-00000165BCF0 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00005866; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000186; SDB=6.00765362; UDB=6.00365707; IPR=6.00541210; BA=6.00004791; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00012902; XFM=3.00000011; UTC=2016-10-07 06:40:30 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16100706-0045-0000-0000-00000592C8A6 Message-Id: <87wphkmzl6.fsf@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-10-07_02:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609300000 definitions=main-1610070118 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1231 Lines: 40 Reza Arbab writes: > To support movable memory nodes (CONFIG_MOVABLE_NODE), at least one of > the following must be true: > > 1. We're on x86. This arch has the capability to identify movable nodes > at boot by parsing the ACPI SRAT, if the movable_node option is used. > > 2. Our config supports memory hotplug, which means that a movable node > can be created by hotplugging all of its memory into ZONE_MOVABLE. > > Fix the Kconfig definition of CONFIG_MOVABLE_NODE, which currently > recognizes (1), but not (2). > We now enable a lot of new code on different arch, such as the new node list N_MEMORY. Reviewed-by: Aneesh Kumar K.V > Signed-off-by: Reza Arbab > --- > mm/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/Kconfig b/mm/Kconfig > index be0ee11..5d0818f 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -153,7 +153,7 @@ config MOVABLE_NODE > bool "Enable to assign a node which has only movable memory" > depends on HAVE_MEMBLOCK > depends on NO_BOOTMEM > - depends on X86_64 > + depends on X86_64 || MEMORY_HOTPLUG > depends on NUMA > default n > help > -- > 1.8.3.1