Re: [PATCH 0/7] perf, x86: Haswell LBR call stack support

[Andi Kleen]

> These patches are also done wrong; the first patches should add HSW
> support for the existing features. Only then should you do patches for
> new fail^wfeatures.

The basic Haswell LBR support is already in tip.

It's pretty much the same as Sandy Bridge, except the the sign
extension need to extend two additional bits.

The only other part not yet in are the exposed filters for INTX/ABORT, plus
the workaround for the duplicated ABORT record. These are orthogonal
to callstack LBR.

-Andi
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