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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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