powerpc: Don't silently handle machine checks from userspace

[Scott Wood]

On 11/06/2012 10:43:19 AM, Micha Nelissen wrote:
> From: Scott Wood [mailto:scottwood at freescale.com]
> >> Hmm I guess there is no simple solution then, since the "recover"
> >> function also prints the kernel messages about the machine check
> >> being in kernel mode without having checked whether it really was  
> in
> >> kernel mode. In the past the user mode check was in between.
> >
> > It shouldn't be that difficult to make it say "in user mode" or "in
> > kernel mode" depending on which it was... or just remove that phrase
> > altogether and let the following output indicate whether it was in
> > kernel mode.
> 
> Well printing the correct message is only part of it: do "we" want to  
> pass guarded load errors (RapidIO bus errors) to user space or not?

Yes.

> And if we pass them, should we print a kernel message at all?

Yes (but maybe ratelimited).

-Scott