diff --git a/arch/powerpc/include/asm/kup.h b/arch/powerpc/include/asm/kup.h
index 5a9820c54da9..bf221a2a523e 100644
--- a/arch/powerpc/include/asm/kup.h
+++ b/arch/powerpc/include/asm/kup.h
@@ -49,8 +49,6 @@ extern bool disable_kuap;
 
 #include <linux/pgtable.h>
 
-void setup_kup(void);
-
 #ifdef CONFIG_PPC_KUEP
 void setup_kuep(bool disabled);
 #else
@@ -85,6 +83,12 @@ static inline void restore_user_access(unsigned long flags) { }
 #endif /* CONFIG_PPC_BOOK3S_64 */
 #endif /* CONFIG_PPC_KUAP */
 
+static __always_inline void setup_kup(void)
+{
+	setup_kuep(disable_kuep);
+	setup_kuap(disable_kuap);
+}
+
 static inline void allow_read_from_user(const void __user *from, unsigned long size)
 {
 	allow_user_access(NULL, from, size, KUAP_READ);
diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c
index afdebb95bcae..3a82f89827a5 100644
--- a/arch/powerpc/mm/init-common.c
+++ b/arch/powerpc/mm/init-common.c
@@ -47,12 +47,6 @@ static int __init parse_nosmap(char *p)
 }
 early_param("nosmap", parse_nosmap);
 
-void __ref setup_kup(void)
-{
-	setup_kuep(disable_kuep);
-	setup_kuap(disable_kuap);
-}
-
 #define CTOR(shift) static void ctor_##shift(void *addr) \
 {							\
 	memset(addr, 0, sizeof(void *) << (shift));	\