x86, realmode: don't copy real_mode_header

Replaced copying of real_mode_header with a pointer
to beginning of RM memory.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-19-git-send-email-jarkko.sakkinen@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index c7971ea..b8c0661 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -665,9 +665,9 @@
 static int __cpuinit do_boot_cpu(int apicid, int cpu)
 {
 	volatile u32 *trampoline_status =
-		(volatile u32 *) __va(real_mode_header.trampoline_status);
+		(volatile u32 *) __va(real_mode_header->trampoline_status);
 	/* start_ip had better be page-aligned! */
-	unsigned long start_ip = real_mode_header.trampoline_data;
+	unsigned long start_ip = real_mode_header->trampoline_data;
 
 	unsigned long boot_error = 0;
 	int timeout;