MSR_HWP_INTERRUPT
wrmsrq_on_cpu(cpudata->cpu, MSR_HWP_INTERRUPT, 0x00);
wrmsrq_on_cpu(cpudata->cpu, MSR_HWP_INTERRUPT, interrupt_mask);
wrmsrq_on_cpu(cpudata->cpu, MSR_HWP_INTERRUPT, 0x00);
if (get_msr(cpu, MSR_HWP_INTERRUPT, &msr))
get_msr(first_cpu_in_pkg[pkg], MSR_HWP_INTERRUPT, &msr);