P-State transition monitoring

[rdmsr64]

Hello,

I'm doing several profiling routines, including MSR_PERF_STATUS for P-State read-out.

I'm a bit puzzled as to why for SandyBridgeIA32_PERF_CTL is defined per thread but MSR_PERF_STATUS per package.

Windows and Linux Power Management are setting each core individually, but by reading out 0x198 on every core I also see individual P-States per core in PERF_STATUS.

Giving that PERF_STATUS is only defined per package, and not per thread, what should I make of it?

Could someone please clarify if this is intended or a documentation error?

Thanks