From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751773Ab3BTVgy (ORCPT ); Wed, 20 Feb 2013 16:36:54 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:40731 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751538Ab3BTVgw (ORCPT ); Wed, 20 Feb 2013 16:36:52 -0500 Date: Wed, 20 Feb 2013 13:36:50 -0800 From: Andrew Morton To: Tang Chen Cc: jiang.liu@huawei.com, wujianguo@huawei.com, hpa@zytor.com, wency@cn.fujitsu.com, laijs@cn.fujitsu.com, linfeng@cn.fujitsu.com, yinghai@kernel.org, isimatu.yasuaki@jp.fujitsu.com, rob@landley.net, kosaki.motohiro@jp.fujitsu.com, minchan.kim@gmail.com, mgorman@suse.de, rientjes@google.com, guz.fnst@cn.fujitsu.com, rusty@rustcorp.com.au, lliubbo@gmail.com, jaegeuk.hanse@gmail.com, tony.luck@intel.com, glommer@parallels.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [Bug fix PATCH 0/2] Make whatever node kernel resides in un-hotpluggable. Message-Id: <20130220133650.4e0913f3.akpm@linux-foundation.org> In-Reply-To: <1361358056-1793-1-git-send-email-tangchen@cn.fujitsu.com> References: <1361358056-1793-1-git-send-email-tangchen@cn.fujitsu.com> X-Mailer: Sylpheed 3.0.2 (GTK+ 2.20.1; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 20 Feb 2013 19:00:54 +0800 Tang Chen wrote: > As mentioned by HPA before, when we are using movablemem_map=acpi, if all the > memory in SRAT is hotpluggable, then the kernel will have no memory to use, and > will fail to boot. > > Before parsing SRAT, memblock has already reserved some memory in memblock.reserve, > which is used by the kernel, such as storing the kernel image. We are not able to > prevent the kernel from using these memory. So, these 2 patches make the node which > the kernel resides in un-hotpluggable. I'm planning to roll all these into a single commit: acpi-memory-hotplug-support-getting-hotplug-info-from-srat.patch acpi-memory-hotplug-support-getting-hotplug-info-from-srat-fix.patch acpi-memory-hotplug-support-getting-hotplug-info-from-srat-fix-fix.patch acpi-memory-hotplug-support-getting-hotplug-info-from-srat-fix-fix-fix.patch acpi-memory-hotplug-support-getting-hotplug-info-from-srat-fix-fix-fix-fix.patch acpi-memory-hotplug-support-getting-hotplug-info-from-srat-fix-fix-fix-fix-fix.patch for reasons of tree-cleanliness and to avoid bisection holes. They're at http://ozlabs.org/~akpm/mmots/broken-out/. Can you please check the changelog for acpi-memory-hotplug-support-getting-hotplug-info-from-srat.patch to see if it needs any updates due to all the fixup patches? If so, please send me the new changelog, thanks. Also, please review the changelogging for these: page_alloc-add-movable_memmap-kernel-parameter.patch page_alloc-add-movable_memmap-kernel-parameter-fix.patch page_alloc-add-movable_memmap-kernel-parameter-fix-fix.patch page_alloc-add-movable_memmap-kernel-parameter-fix-fix-checkpatch-fixes.patch page_alloc-add-movable_memmap-kernel-parameter-fix-fix-fix.patch page_alloc-add-movable_memmap-kernel-parameter-rename-movablecore_map-to-movablemem_map.patch memory-hotplug-remove-sys-firmware-memmap-x-sysfs.patch memory-hotplug-remove-sys-firmware-memmap-x-sysfs-fix.patch memory-hotplug-remove-sys-firmware-memmap-x-sysfs-fix-fix.patch memory-hotplug-remove-sys-firmware-memmap-x-sysfs-fix-fix-fix.patch memory-hotplug-remove-sys-firmware-memmap-x-sysfs-fix-fix-fix-fix.patch memory-hotplug-remove-sys-firmware-memmap-x-sysfs-fix-fix-fix-fix-fix.patch memory-hotplug-implement-register_page_bootmem_info_section-of-sparse-vmemmap.patch memory-hotplug-implement-register_page_bootmem_info_section-of-sparse-vmemmap-fix.patch memory-hotplug-implement-register_page_bootmem_info_section-of-sparse-vmemmap-fix-fix.patch memory-hotplug-implement-register_page_bootmem_info_section-of-sparse-vmemmap-fix-fix-fix.patch memory-hotplug-implement-register_page_bootmem_info_section-of-sparse-vmemmap-fix-fix-fix-fix.patch memory-hotplug-common-apis-to-support-page-tables-hot-remove.patch memory-hotplug-common-apis-to-support-page-tables-hot-remove-fix.patch memory-hotplug-common-apis-to-support-page-tables-hot-remove-fix-fix.patch memory-hotplug-common-apis-to-support-page-tables-hot-remove-fix-fix-fix.patch memory-hotplug-common-apis-to-support-page-tables-hot-remove-fix-fix-fix-fix.patch memory-hotplug-common-apis-to-support-page-tables-hot-remove-fix-fix-fix-fix-fix.patch memory-hotplug-common-apis-to-support-page-tables-hot-remove-fix-fix-fix-fix-fix-fix.patch memory-hotplug-common-apis-to-support-page-tables-hot-remove-fix-fix-fix-fix-fix-fix-fix.patch acpi-memory-hotplug-parse-srat-before-memblock-is-ready.patch acpi-memory-hotplug-parse-srat-before-memblock-is-ready-fix.patch acpi-memory-hotplug-parse-srat-before-memblock-is-ready-fix-fix.patch and while we're there, let's pause to admire how prescient I was in refusing to merge all this into 3.8-rc1 :)