MSR_ATOM_CORE_RATIOS
err = rdmsrq_safe(MSR_ATOM_CORE_RATIOS, base_freq);
rdmsrq(MSR_ATOM_CORE_RATIOS, value);
rdmsrq(MSR_ATOM_CORE_RATIOS, value);
get_msr(master_cpu, MSR_ATOM_CORE_RATIOS, &msr);