Messages in this thread | | | Date | Tue, 9 Jun 2009 15:23:13 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH -tip] perf_counter/x86: Fix incorrect default branch |
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* 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 ;-)
Ingo
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