On 02/27/2014 02:31 PM, Steven Rostedt wrote:
> 
> Yeah, something is getting mesed up.
> 

What it *looks* like to me is that we try to nest the cr2 save/restore,
which doesn't nest because it is a percpu variable.

... except in the x86-64 case, we *ALSO* save/restore cr2 inside
entry_64.S, which makes the stuff in do_nmi completely redundant and
there for no good reason.

I would actually suggest we do the equivalent on i386 as well.

Vince, could you try this patch as an experiment?