Re: [PATCH 06/14] perf, x86: PEBS infrastructure

Peter Zijlstra
2010-03-05T19:39:44Z

On Fri, 2010-03-05 at 11:11 -0800, Stephane Eranian wrote:
> By rewinding you get the IP of the instruction that caused the event. But the
> register state is STILL reflecting the situation at retirement of that
> instruction.

I'm quite aware of that, but its near impossible to reverse interpret
instructions such as "mov rdx, $rdx", so until we get fault like PEBS
we'll just have to live with this.