Messages in this thread | | | Date | Thu, 3 Jul 2014 19:07:11 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH V2 2/3] perf protect LBR when Intel PT is enabled. |
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On Thu, Jul 03, 2014 at 05:52:37PM +0200, Andi Kleen wrote: > > If there's active LBR users out there, we should refuse to enable PT and > > vice versa. > > This doesn't work, e.g. hardware debuggers can take over at any time.
Tough cookies. Hardware debuggers get to deal with whatever crap they cause. [unhandled content-type:application/pgp-signature] | |