v4.19.13 snapshot.
diff --git a/arch/arm/mm/extable.c b/arch/arm/mm/extable.c
new file mode 100644
index 0000000..fc33564
--- /dev/null
+++ b/arch/arm/mm/extable.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/arch/arm/mm/extable.c
+ */
+#include <linux/extable.h>
+#include <linux/uaccess.h>
+
+int fixup_exception(struct pt_regs *regs)
+{
+ const struct exception_table_entry *fixup;
+
+ fixup = search_exception_tables(instruction_pointer(regs));
+ if (fixup) {
+ regs->ARM_pc = fixup->fixup;
+#ifdef CONFIG_THUMB2_KERNEL
+ /* Clear the IT state to avoid nasty surprises in the fixup */
+ regs->ARM_cpsr &= ~PSR_IT_MASK;
+#endif
+ }
+
+ return fixup != NULL;
+}