From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753037Ab2GTHbs (ORCPT ); Fri, 20 Jul 2012 03:31:48 -0400 Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:47858 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752127Ab2GTHbq (ORCPT ); Fri, 20 Jul 2012 03:31:46 -0400 X-SecurityPolicyCheck: OK by SHieldMailChecker v1.7.4 Message-ID: <5009094B.3090506@jp.fujitsu.com> Date: Fri, 20 Jul 2012 16:31:23 +0900 From: Yasuaki Ishimatsu User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:14.0) Gecko/20120713 Thunderbird/14.0 MIME-Version: 1.0 To: Wen Congyang CC: , , , , , , , , , , , , Subject: Re: [RFC PATCH 0/8] memory-hotplug : hot-remove physical memory(clear page table) References: <5009038A.4090001@cn.fujitsu.com> In-Reply-To: <5009038A.4090001@cn.fujitsu.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [Hi Wen, Good news!! I was waiting for this patch to come. Applying the patches, can we hot-remove physical memory completely? 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(-) >