Fix gdt table size in trampoline.S

From: "Eric W. Biederman" <ebiederm@xmission.com>

Allows easier extension of the GDT by using the proper C symbol
for the size in the descriptor.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andi Kleen <ak@suse.de>

---
 arch/x86_64/kernel/trampoline.S |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

Index: linux/arch/x86_64/kernel/trampoline.S
===================================================================
--- linux.orig/arch/x86_64/kernel/trampoline.S
+++ linux/arch/x86_64/kernel/trampoline.S
@@ -64,7 +64,7 @@ idt_48:
 	.word	0, 0			# idt base = 0L
 
 gdt_48:
-	.short	__KERNEL32_CS + 7	# gdt limit
+	.short	GDT_ENTRIES*8 - 1	# gdt limit
 	.long	cpu_gdt_table-__START_KERNEL_map
 
 .globl trampoline_end
