diff --git a/xen/arch/riscv/include/asm/byteorder.h b/xen/arch/riscv/include/asm/byteorder.h
new file mode 100644
index 0000000000..320a03c88f
--- /dev/null
+++ b/xen/arch/riscv/include/asm/byteorder.h
@@ -0,0 +1,16 @@
+#ifndef __ASM_RISCV_BYTEORDER_H__
+#define __ASM_RISCV_BYTEORDER_H__
+
+#define __BYTEORDER_HAS_U64__
+
+#include <xen/byteorder/little_endian.h>
+
+#endif /* __ASM_RISCV_BYTEORDER_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */