Messages in this thread |  | | | Date | Thu, 23 Nov 2006 09:52:54 +0100 | | From | Andi Kleen <> | | Subject | Re: [PATCH] i386 add Intel PEBS and BTS cpufeature bits and detection |
> LBR is mainly useful on wild branches to random addresses. As such,
The page fault handler is one of the most performance critical exceptions. And then on x86-64 a lot of stray pointers actually result in a #GP, not a page fault.
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