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Date: Thu, 23 Nov 2006 09:52:54 +0100 From: Andi Kleen <ak@...e.de> To: Keith Owens <kaos@....com> Cc: Andi Kleen <ak@...e.de>, Jeremy Fitzhardinge <jeremy@...p.org>, eranian@....hp.com, linux-kernel@...r.kernel.org, akpm@...l.org 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. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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