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    SubjectRe: MIPS: return after handling coprocessor 2 exception
    On 06/17/2010 06:25 AM, Jesper Nilsson wrote:
    > Breaking here dropped us to the default code which always sends
    > a SIGILL to the current process, no matter what the CU2 notifier says.
    >
    > Signed-off-by: Jesper Nilsson<jesper@jni.nu>
    > ---
    > traps.c | 2 +-
    > 1 file changed, 1 insertion(+), 1 deletion(-)
    >
    > diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
    > index 8bdd6a6..8527808 100644
    > --- a/arch/mips/kernel/traps.c
    > +++ b/arch/mips/kernel/traps.c
    > @@ -976,7 +976,7 @@ asmlinkage void do_cpu(struct pt_regs *regs)
    >
    > case 2:
    > raw_notifier_call_chain(&cu2_chain, CU2_EXCEPTION, regs);
    > - break;
    > + return;
    >

    What happens when the call chain is empty, and the proper action *is*
    SIGILL?

    David Daney


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