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s390/exceptions: switch to relative exception table entries

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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>
This commit is contained in:
Heiko Carstens
2012-09-05 13:26:11 +02:00
committed by Martin Schwidefsky
parent 24996edce5
commit eb608fb366
10 changed files with 132 additions and 33 deletions
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2
arch/s390/mm/fault.c
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@@ -163,7 +163,7 @@ static noinline void do_no_context(struct pt_regs *regs)
/* Are we prepared to handle this kernel fault? */
fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
if (fixup) {
regs->psw.addr = fixup->fixup | PSW_ADDR_AMODE;
regs->psw.addr = extable_fixup(fixup) | PSW_ADDR_AMODE;
return;
}