Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757142Ab3IFP66 (ORCPT ); Fri, 6 Sep 2013 11:58:58 -0400 Received: from terminus.zytor.com ([198.137.202.10]:55677 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756816Ab3IFP64 (ORCPT ); Fri, 6 Sep 2013 11:58:56 -0400 User-Agent: K-9 Mail for Android In-Reply-To: <20130906151526.GA22423@mtj.dyndns.org> References: <1377596268-31552-1-git-send-email-tangchen@cn.fujitsu.com> <20130904192215.GG26609@mtj.dyndns.org> <52299935.0302450a.26c9.ffffb240SMTPIN_ADDED_BROKEN@mx.google.com> <20130906151526.GA22423@mtj.dyndns.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH 00/11] x86, memblock: Allocate memory near kernel image before SRAT parsed. From: "H. Peter Anvin" Date: Fri, 06 Sep 2013 08:47:45 -0700 To: Tejun Heo , Wanpeng Li CC: rjw@sisk.pl, lenb@kernel.org, tglx@linutronix.de, mingo@elte.hu, akpm@linux-foundation.org, trenn@suse.de, yinghai@kernel.org, jiang.liu@huawei.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com, isimatu.yasuaki@jp.fujitsu.com, izumi.taku@jp.fujitsu.com, mgorman@suse.de, minchan@kernel.org, mina86@mina86.com, gong.chen@linux.intel.com, vasilis.liaskovitis@profitbricks.com, lwoodman@redhat.com, riel@redhat.com, jweiner@redhat.com, prarit@redhat.com, zhangyanfei@cn.fujitsu.com, x86@kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-acpi@vger.kernel.org Message-ID: <157310e1-f8cb-4184-b58d-63cf9fa611ee@email.android.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 838 Lines: 22 Specifically there are a bunch of things which need to be below a certain address (which one varies.) Tejun Heo wrote: >Hello, Wanpeng. > >On Fri, Sep 06, 2013 at 04:58:11PM +0800, Wanpeng Li wrote: >> What's the root reason memblock alloc from high to low? To reduce >> fragmentation or ... > >Because low memory tends to be more precious, it's just easier to pack >everything towards the top so that we don't have to worry about which >zone to use for allocation and fallback logic. > >Thanks. -- Sent from my mobile phone. Please pardon brevity and lack of formatting. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/