Messages in this thread | | | Date | Fri, 07 Oct 2011 20:54:45 +0900 | From | Masami Hiramatsu <> | Subject | Re: [PATCH 07/12] perf_events: add LBR software filter support for Intel X86 |
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(2011/10/07 20:21), Peter Zijlstra wrote: > 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.
OK, I'll do hardening it.
Thanks,
-- Masami HIRAMATSU Software Platform Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: masami.hiramatsu.pt@hitachi.com
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