MSR_PERF_STATUS
msr = rdmsr(MSR_PERF_STATUS);
msr = rdmsr(MSR_PERF_STATUS);
case MSR_PERF_STATUS: return "perf status";
case MSR_PERF_STATUS: vmm_decode_perf_status_value(val); break;
msr = rdmsr(MSR_PERF_STATUS);
msr = rdmsr(MSR_PERF_STATUS);