[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/ia64/mm/extable.c b/src/kernel/linux/v4.14/arch/ia64/mm/extable.c
new file mode 100644
index 0000000..da477c1
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/ia64/mm/extable.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Kernel exception handling table support.  Derived from arch/alpha/mm/extable.c.
+ *
+ * Copyright (C) 1998, 1999, 2001-2002, 2004 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+#include <asm/ptrace.h>
+#include <asm/extable.h>
+#include <asm/errno.h>
+#include <asm/processor.h>
+
+void
+ia64_handle_exception (struct pt_regs *regs, const struct exception_table_entry *e)
+{
+	long fix = (u64) &e->fixup + e->fixup;
+
+	regs->r8 = -EFAULT;
+	if (fix & 4)
+		regs->r9 = 0;
+	regs->cr_iip = fix & ~0xf;
+	ia64_psr(regs)->ri = fix & 0x3;		/* set continuation slot number */
+}