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SubjectRe: MIPS: return after handling coprocessor 2 exception
On 17.06.2010 21:13, David Daney wrote:
> 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>
[...]
>> 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?

It's never empty, in fact. The default notifier declared at top of
traps.c sends SIGILL. The problem that current code is sending SIGILL in
all cases.

Gleb.


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