s390/exceptions: switch to relative exception table entries

This is the s390 port of 70627654 "x86, extable: Switch to relative
exception table entries".
Reduces the size of our exception tables by 50% on 64 bit builds.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 8aa634f..d1c7214 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -547,7 +547,7 @@
 		 */
 		entry = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
 		if (entry) {
-			regs->psw.addr = entry->fixup | PSW_ADDR_AMODE;
+			regs->psw.addr = extable_fixup(entry) | PSW_ADDR_AMODE;
 			return 1;
 		}