diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index d5274f8c21..297845d691 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -851,6 +851,9 @@ void __init noreturn __start_xen(unsigned long mbi_p)
 
     /* Full exception support from here on in. */
 
+    rdmsrl(MSR_EFER, this_cpu(efer));
+    asm volatile ( "mov %%cr4,%0" : "=r" (get_cpu_info()->cr4) );
+
     /* Enable NMIs.  Our loader (e.g. Tboot) may have left them disabled. */
     enable_nmis();
 
@@ -897,9 +900,6 @@ void __init noreturn __start_xen(unsigned long mbi_p)
 
     parse_video_info();
 
-    rdmsrl(MSR_EFER, this_cpu(efer));
-    asm volatile ( "mov %%cr4,%0" : "=r" (get_cpu_info()->cr4) );
-
     /* We initialise the serial devices very early so we can get debugging. */
     ns16550.io_base = 0x3f8;
     ns16550.irq     = 4;