From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx123.postini.com [74.125.245.123]) by kanga.kvack.org (Postfix) with SMTP id D10866B004D for ; Fri, 20 Jul 2012 03:31:46 -0400 (EDT) Received: from m1.gw.fujitsu.co.jp (unknown [10.0.50.71]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id AD8023EE0B6 for ; Fri, 20 Jul 2012 16:31:44 +0900 (JST) Received: from smail (m1 [127.0.0.1]) by outgoing.m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 96E8D45DE56 for ; Fri, 20 Jul 2012 16:31:44 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (s1.gw.fujitsu.co.jp [10.0.50.91]) by m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 788A445DE54 for ; Fri, 20 Jul 2012 16:31:44 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 688691DB8047 for ; Fri, 20 Jul 2012 16:31:44 +0900 (JST) Received: from g01jpexchyt03.g01.fujitsu.local (g01jpexchyt03.g01.fujitsu.local [10.128.194.42]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 19CE31DB8043 for ; Fri, 20 Jul 2012 16:31:44 +0900 (JST) Message-ID: <5009094B.3090506@jp.fujitsu.com> Date: Fri, 20 Jul 2012 16:31:23 +0900 From: Yasuaki Ishimatsu MIME-Version: 1.0 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: owner-linux-mm@kvack.org List-ID: To: Wen Congyang 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 [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(-) > -- 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