Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750995AbVI1Vst (ORCPT ); Wed, 28 Sep 2005 17:48:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750998AbVI1Vst (ORCPT ); Wed, 28 Sep 2005 17:48:49 -0400 Received: from mailout1.vmware.com ([65.113.40.130]:33545 "EHLO mailout1.vmware.com") by vger.kernel.org with ESMTP id S1750994AbVI1Vss (ORCPT ); Wed, 28 Sep 2005 17:48:48 -0400 Date: Wed, 28 Sep 2005 14:44:05 -0700 Message-Id: <200509282144.j8SLi53a032237@zach-dev.vmware.com> Subject: [PATCH 3/3] Gdt hotplug From: Zachary Amsden To: Linus Torvalds , Jeffrey Sheldon , Ole Agesen , Shai Fultheim , Andrew Morton , Jack Lo , Ingo Molnar , Linux Kernel Mailing List , Virtualization Mailing List , Chris Wright , Martin Bligh , Pratap Subrahmanyam , Christopher Li , "H. Peter Anvin" , Zwane Mwaikambo , Andi Kleen , Zachary Amsden X-OriginalArrivalTime: 28 Sep 2005 21:44:06.0210 (UTC) FILETIME=[C00B2220:01C5C475] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1056 Lines: 23 As suggested by Andi Kleen, don't allocate a GDT page if there is already one present. Needed for CPU hotplug. Signed-off-by: Zachary Amsden Index: linux-2.6.14-rc1/arch/i386/kernel/smpboot.c =================================================================== --- linux-2.6.14-rc1.orig/arch/i386/kernel/smpboot.c 2005-09-20 20:38:22.000000000 -0700 +++ linux-2.6.14-rc1/arch/i386/kernel/smpboot.c 2005-09-28 12:54:08.000000000 -0700 @@ -898,7 +898,8 @@ static int __devinit do_boot_cpu(int api * This grunge runs the startup process for * the targeted processor. */ - cpu_gdt_descr[cpu].address = __get_free_page(GFP_KERNEL|__GFP_ZERO); + if (!cpu_gdt_descr[cpu].address) + cpu_gdt_descr[cpu].address = __get_free_page(GFP_KERNEL|__GFP_ZERO); atomic_set(&init_deasserted, 0); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/