From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932096Ab3AJC0r (ORCPT ); Wed, 9 Jan 2013 21:26:47 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:2588 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1757575Ab3AJC0p (ORCPT ); Wed, 9 Jan 2013 21:26:45 -0500 X-IronPort-AV: E=Sophos;i="4.84,442,1355068800"; d="scan'208";a="6554614" Message-ID: <50EE26B4.40204@cn.fujitsu.com> Date: Thu, 10 Jan 2013 10:25:56 +0800 From: Tang Chen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: Andrew Morton CC: rientjes@google.com, len.brown@intel.com, benh@kernel.crashing.org, paulus@samba.org, cl@linux.com, minchan.kim@gmail.com, kosaki.motohiro@jp.fujitsu.com, isimatu.yasuaki@jp.fujitsu.com, wujianguo@huawei.com, wency@cn.fujitsu.com, hpa@zytor.com, linfeng@cn.fujitsu.com, laijs@cn.fujitsu.com, mgorman@suse.de, yinghai@kernel.org, glommer@parallels.com, x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-ia64@vger.kernel.org, cmetcalf@tilera.com, sparclinux@vger.kernel.org Subject: Re: [PATCH v6 05/15] memory-hotplug: introduce new function arch_remove_memory() for removing page table depends on architecture References: <1357723959-5416-1-git-send-email-tangchen@cn.fujitsu.com> <1357723959-5416-6-git-send-email-tangchen@cn.fujitsu.com> <20130109145031.210505d0.akpm@linux-foundation.org> In-Reply-To: <20130109145031.210505d0.akpm@linux-foundation.org> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/01/10 10:26:07, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/01/10 10:26:08, Serialize complete at 2013/01/10 10:26:08 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Andrew, On 01/10/2013 06:50 AM, Andrew Morton wrote: > On Wed, 9 Jan 2013 17:32:29 +0800 > Tang Chen wrote: > >> For removing memory, we need to remove page table. But it depends >> on architecture. So the patch introduce arch_remove_memory() for >> removing page table. Now it only calls __remove_pages(). >> >> Note: __remove_pages() for some archtecuture is not implemented >> (I don't know how to implement it for s390). > > Can this break the build for s390? No, I don't think so. The arch_remove_memory() in s390 will only return -EBUSY. Thanks. :) > > >