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powerpc: Add support for relative exception tables

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This halves the exception table size on 64-bit builds, and it allows
build-time sorting of exception tables to work on relocated kernels.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Minor asm fixups and bits to keep the selftests working]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin
2016-10-14 16:47:31 +11:00
committed by Michael Ellerman
parent 24bfa6a9e0
commit 61a92f7031
9 changed files with 34 additions and 23 deletions
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2
arch/powerpc/platforms/embedded6xx/holly.c
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@@ -263,7 +263,7 @@ static int ppc750_machine_check_exception(struct pt_regs *regs)
if ((entry = search_exception_tables(regs->nip)) != NULL) {
tsi108_clear_pci_cfg_error();
regs->msr |= MSR_RI;
regs->nip = entry->fixup;
regs->nip = extable_fixup(entry);
return 1;
}
return 0;