v4.19.13 snapshot.
diff --git a/include/linux/kd.h b/include/linux/kd.h
new file mode 100644
index 0000000..b130a18
--- /dev/null
+++ b/include/linux/kd.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_KD_H
+#define _LINUX_KD_H
+
+#include <uapi/linux/kd.h>
+
+#define KD_FONT_FLAG_OLD		0x80000000	/* Invoked via old interface [compat] */
+#endif /* _LINUX_KD_H */