diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h
index cc177b4431ae8255504afc3c97454cfb480f9eb9..1d3cbaef4bb7187988eeee330476eee5af807b30 100644
--- a/arch/x86/include/asm/special_insns.h
+++ b/arch/x86/include/asm/special_insns.h
@@ -243,10 +243,10 @@ static inline void serialize(void)
 }
 
 /* The dst parameter must be 64-bytes aligned */
-static inline void movdir64b(void *dst, const void *src)
+static inline void movdir64b(void __iomem *dst, const void *src)
 {
 	const struct { char _[64]; } *__src = src;
-	struct { char _[64]; } *__dst = dst;
+	struct { char _[64]; } __iomem *__dst = dst;
 
 	/*
 	 * MOVDIR64B %(rdx), rax.
@@ -286,7 +286,7 @@ static inline void movdir64b(void *dst, const void *src)
 static inline int enqcmds(void __iomem *dst, const void *src)
 {
 	const struct { char _[64]; } *__src = src;
-	struct { char _[64]; } *__dst = dst;
+	struct { char _[64]; } __iomem *__dst = dst;
 	int zf;
 
 	/*