v4.19.13 snapshot.
diff --git a/arch/mips/include/asm/shmparam.h b/arch/mips/include/asm/shmparam.h
new file mode 100644
index 0000000..324d040
--- /dev/null
+++ b/arch/mips/include/asm/shmparam.h
@@ -0,0 +1,13 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#ifndef _ASM_SHMPARAM_H
+#define _ASM_SHMPARAM_H
+
+#define __ARCH_FORCE_SHMLBA 1
+
+#define SHMLBA 0x40000 /* attach addr a multiple of this */
+
+#endif /* _ASM_SHMPARAM_H */