diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
index 4d258ad76a0fc..b8238dc8786d9 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -273,6 +273,7 @@ typedef struct page *pgtable_t;
 
 extern pteval_t __supported_pte_mask;
 extern int nx_enabled;
+extern void set_nx(void);
 
 #define pgprot_writecombine	pgprot_writecombine
 extern pgprot_t pgprot_writecombine(pgprot_t prot);
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 1669693e97de5..5e5126e0d544b 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -605,7 +605,7 @@ static int __init noexec_setup(char *str)
 }
 early_param("noexec", noexec_setup);
 
-static void __init set_nx(void)
+void __init set_nx(void)
 {
 	unsigned int v[4], l, h;