MSR_AMD_F15H_PERF_CTR0
case MSR_AMD_F15H_PERF_CTR0:
return ((msr - MSR_AMD_F15H_PERF_CTR0) / 2);
#define MSR_CPC_EXTD_CTR(idx) (MSR_AMD_F15H_PERF_CTR0 + (idx * 2))