From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx148.postini.com [74.125.245.148]) by kanga.kvack.org (Postfix) with SMTP id 249D76B0034 for ; Thu, 15 Aug 2013 11:05:40 -0400 (EDT) Received: by mail-oa0-f42.google.com with SMTP id i18so886090oag.15 for ; Thu, 15 Aug 2013 08:05:39 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20130815144538.GC14606@htj.dyndns.org> References: <20130812152343.GK15892@htj.dyndns.org> <52090D7F.6060600@gmail.com> <20130812164650.GN15892@htj.dyndns.org> <5209CEC1.8070908@cn.fujitsu.com> <520A02DE.1010908@cn.fujitsu.com> <520C947B.40407@cn.fujitsu.com> <20130815121900.GA14606@htj.dyndns.org> <520CCD41.5000508@cn.fujitsu.com> <20130815144538.GC14606@htj.dyndns.org> Date: Thu, 15 Aug 2013 08:05:38 -0700 Message-ID: Subject: Re: [PATCH part5 0/7] Arrange hotpluggable memory as ZONE_MOVABLE. From: Yinghai Lu Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: Tejun Heo Cc: Tang Chen , Tang Chen , "H. Peter Anvin" , Bob Moore , Lv Zheng , "Rafael J. Wysocki" , Len Brown , Thomas Gleixner , Ingo Molnar , Andrew Morton , Thomas Renninger , Jiang Liu , Wen Congyang , Lai Jiangshan , Yasuaki Ishimatsu , Taku Izumi , Mel Gorman , Minchan Kim , "mina86@mina86.com" , "gong.chen@linux.intel.com" , Vasilis Liaskovitis , "lwoodman@redhat.com" , Rik van Riel , "jweiner@redhat.com" , Prarit Bhargava , Zhang Yanfei , "yanghy@cn.fujitsu.com" , the arch/x86 maintainers , "linux-doc@vger.kernel.org" , Linux Kernel Mailing List , Linux MM , ACPI Devel Maling List , "Luck, Tony (tony.luck@intel.com)" On Thu, Aug 15, 2013 at 7:45 AM, Tejun Heo wrote: > Hello, Yinghai. > > On Thu, Aug 15, 2013 at 07:37:59AM -0700, Yinghai Lu wrote: >> On Thu, Aug 15, 2013 at 5:44 AM, Tang Chen wrote: >> >> > Yes, the new behavior should be controlled by boot option. >> >> No, should avoid boot option. > > It's suboptimal behavior which is chosen as trade-off to enable > hotplug support and shouldn't be the default behavior just like node > data and page table should be allocated on the same node by default. > Why would we allocate kernel page table in low memory be default? That is what my patchset want to do. put page tables on the same node like node data. with that, hotplug and normal case will be the same code path. Yinghai -- 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