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avg
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2010-11-19T15:07:36.453139Z
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V 287
specialreg.h: add definitions for MPERF/APERF pair of MSRs

These MSRs can be used to determine actual (average) performance as
compared to a maximum defined performance.
Availability of these MSRs is indicated by bit0 in CPUID.6.ECX on both
Intel and AMD processors.

MFC after:	5 days

END