From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx192.postini.com [74.125.245.192]) by kanga.kvack.org (Postfix) with SMTP id 6EE378D0001 for ; Mon, 24 Dec 2012 07:10:29 -0500 (EST) From: Tang Chen Subject: [PATCH v5 09/14] memory-hotplug: remove page table of x86_64 architecture Date: Mon, 24 Dec 2012 20:09:19 +0800 Message-Id: <1356350964-13437-10-git-send-email-tangchen@cn.fujitsu.com> In-Reply-To: <1356350964-13437-1-git-send-email-tangchen@cn.fujitsu.com> References: <1356350964-13437-1-git-send-email-tangchen@cn.fujitsu.com> Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.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, kosaki.motohiro@jp.fujitsu.com, isimatu.yasuaki@jp.fujitsu.com, wujianguo@huawei.com, wency@cn.fujitsu.com, tangchen@cn.fujitsu.com, hpa@zytor.com, linfeng@cn.fujitsu.com, laijs@cn.fujitsu.com, mgorman@suse.de, yinghai@kernel.org Cc: 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 This patch searches a page table about the removed memory, and clear page table for x86_64 architecture. Signed-off-by: Wen Congyang Signed-off-by: Jianguo Wu Signed-off-by: Jiang Liu Signed-off-by: Tang Chen --- arch/x86/mm/init_64.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index b30df3c..4b160d8 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -979,6 +979,15 @@ remove_pagetable(unsigned long start, unsigned long end, bool direct) flush_tlb_all(); } +void __meminit +kernel_physical_mapping_remove(unsigned long start, unsigned long end) +{ + start = (unsigned long)__va(start); + end = (unsigned long)__va(end); + + remove_pagetable(start, end, true); +} + #ifdef CONFIG_MEMORY_HOTREMOVE int __ref arch_remove_memory(u64 start, u64 size) { @@ -988,6 +997,7 @@ int __ref arch_remove_memory(u64 start, u64 size) int ret; zone = page_zone(pfn_to_page(start_pfn)); + kernel_physical_mapping_remove(start, start + size); ret = __remove_pages(zone, start_pfn, nr_pages); WARN_ON_ONCE(ret); -- 1.7.1 -- 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