v4.19.13 snapshot.
diff --git a/arch/m68k/include/asm/tlb.h b/arch/m68k/include/asm/tlb.h
new file mode 100644
index 0000000..b4b9efb
--- /dev/null
+++ b/arch/m68k/include/asm/tlb.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _M68K_TLB_H
+#define _M68K_TLB_H
+
+/*
+ * m68k doesn't need any special per-pte or
+ * per-vma handling..
+ */
+#define tlb_start_vma(tlb, vma) do { } while (0)
+#define tlb_end_vma(tlb, vma) do { } while (0)
+#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
+
+/*
+ * .. because we flush the whole mm when it
+ * fills up.
+ */
+#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
+
+#include <asm-generic/tlb.h>
+
+#endif /* _M68K_TLB_H */