diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index f9b6a88..6a68b1a 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -473,6 +473,7 @@
 
 static int disable_nx __initdata = 0;
 u64 __supported_pte_mask __read_mostly = ~_PAGE_NX;
+EXPORT_SYMBOL_GPL(__supported_pte_mask);
 
 /*
  * noexec = on|off