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SubjectRe: [PATCH -tip] perf_counter/x86: Fix incorrect default branch
On Tue, Jun 09, 2009 at 03:23:13PM +0200, Ingo Molnar wrote:
>
> * Yong Wang <yong.y.wang@linux.intel.com> wrote:
>
> > The event selector and UMASK values of Nehalem do not apply to all
> > Intel processors.
>
> The idea was to offer _some_ sort of table on new CPUs, instead of
> nothing...
>
> Eventually Intel stops changing those model specific index values in
> future CPUs and puts them into architectural perfmon, for
> fundamental stats like L1/LLC cache statistics.
>
> In that case defaulting to the latest (known) enumeration might work
> out to be just the thing used by all future CPUs.
>
> So this is a subtle hint ;-)
>

I see what you mean. You talked about future cpus. But what about those
old ones that are not atom, core2 or nehalem? Forget about them?

Thanks
-Yong


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