Messages in this thread | | | Subject | Re: [PATCH 07/12] perf_events: add LBR software filter support for Intel X86 | From | Peter Zijlstra <> | Date | Fri, 07 Oct 2011 13:21:59 +0200 |
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On Fri, 2011-10-07 at 13:18 +0200, Peter Zijlstra wrote: > > Yeah, depending on the depth of the LBR. But then what happens, you > > decode an instruction that is not what was executed. > > Right, and Andi's concern is that this might cause our instruction > decoder to blow up, or worse.
That is, we have a fair confidence that its capable of correctly decoding correct streams, but I understood from Masami that they haven't actually tried feeding it crap.
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