v4.19.13 snapshot.
diff --git a/arch/parisc/include/asm/sections.h b/arch/parisc/include/asm/sections.h
new file mode 100644
index 0000000..5a40b51
--- /dev/null
+++ b/arch/parisc/include/asm/sections.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _PARISC_SECTIONS_H
+#define _PARISC_SECTIONS_H
+
+/* nothing to see, move along */
+#include <asm-generic/sections.h>
+
+#ifdef CONFIG_64BIT
+
+#define HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR 1
+
+#undef dereference_function_descriptor
+void *dereference_function_descriptor(void *);
+
+#undef dereference_kernel_function_descriptor
+void *dereference_kernel_function_descriptor(void *);
+#endif
+
+#endif