sparc64: Fix top-level fault handling bugs.

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Make get_user_insn() able to cope with huge PMDs.

Next, make do_fault_siginfo() more robust when get_user_insn() can't
actually fetch the instruction.  In particular, use the MMU announced
fault address when that happens, instead of calling
compute_effective_address() and computing garbage.

Signed-off-by: David S. Miller <davem@davemloft.net>

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David S. Miller 2014-04-28 23:52:11 -07:00

parent d037d16372

commit 70ffc6ebae

1 changed files with 52 additions and 30 deletions

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arch/sparc/mm/fault_64.c

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