From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751747Ab2GWJGQ (ORCPT ); Mon, 23 Jul 2012 05:06:16 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:11451 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751041Ab2GWJGO (ORCPT ); Mon, 23 Jul 2012 05:06:14 -0400 X-IronPort-AV: E=Sophos;i="4.77,638,1336320000"; d="scan'208";a="5460457" Message-ID: <500D1527.7070405@cn.fujitsu.com> Date: Mon, 23 Jul 2012 17:11:03 +0800 From: Wen Congyang User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 MIME-Version: 1.0 To: Yasuaki Ishimatsu CC: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, rientjes@google.com, liuj97@gmail.com, len.brown@intel.com, benh@kernel.crashing.org, paulus@samba.org, cl@linux.com, minchan.kim@gmail.com, akpm@linux-foundation.org, kosaki.motohiro@jp.fujitsu.com Subject: Re: [RFC PATCH 0/8] memory-hotplug : hot-remove physical memory(clear page table) References: <5009038A.4090001@cn.fujitsu.com> <5009094B.3090506@jp.fujitsu.com> In-Reply-To: <5009094B.3090506@jp.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/07/23 17:06:43, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/07/23 17:06:48, Serialize complete at 2012/07/23 17:06:48 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org At 07/20/2012 03:31 PM, Yasuaki Ishimatsu Wrote: > [Hi Wen, > > Good news!! I was waiting for this patch to come. > Applying the patches, can we hot-remove physical memory completely? If all functions success, I guess so. Thanks Wen Congyang > > Thanks, > Yasuaki Ishimatsu > > 2012/07/20 16:06, Wen Congyang wrote: >> This patch series aims to support physical memory hot-remove(clear >> page table). >> >> This patch series base on ishimatsu's patch series. You can get it here: >> http://www.spinics.net/lists/linux-acpi/msg36804.html >> >> The patches can remove following things: >> - page table of removed memory >> >> If you find lack of function for physical memory hot-remove, please >> let me >> know. >> >> Note: >> * The patch "remove memory info from list before freeing it" is being >> disccussed >> in other thread. But for testing the patch series, the patch is >> needed. >> So I added the patch as [PATCH 0/8]. >> * You need to apply ishimatsu's patch series first before applying >> this patch >> series. >> >> Wen Congyang (8): >> memory-hotplug: store the node id in acpi_memory_device >> memory-hotplug: offline memory only when it is onlined >> memory-hotplug: call remove_memory() to cleanup when removing memory >> device >> memory-hotplug: export the function acpi_bus_remove() >> memory-hotplug: call acpi_bus_remove() to remove memory device >> memory-hotplug: introduce new function arch_remove_memory() >> x86: make __split_large_page() generally avialable >> memory-hotplug: implement arch_remove_memory() >> >> arch/ia64/mm/init.c | 16 ++++ >> arch/powerpc/mm/mem.c | 14 +++ >> arch/s390/mm/init.c | 8 ++ >> arch/sh/mm/init.c | 15 +++ >> arch/tile/mm/init.c | 8 ++ >> arch/x86/include/asm/pgtable_types.h | 1 + >> arch/x86/mm/init_32.c | 10 ++ >> arch/x86/mm/init_64.c | 160 >> ++++++++++++++++++++++++++++++++++ >> arch/x86/mm/pageattr.c | 47 +++++----- >> drivers/acpi/acpi_memhotplug.c | 24 ++++-- >> drivers/acpi/scan.c | 3 +- >> include/acpi/acpi_bus.h | 1 + >> include/linux/memory_hotplug.h | 1 + >> mm/memory_hotplug.c | 2 +- >> 14 files changed, 280 insertions(+), 30 deletions(-) >> > > >