[PATCH 3/3] Gdt hotplug

[zach at vmware.com (Zachary Amsden)]

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 <zach@xxxxxxxxxx>
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);