UNCORE_CONTROL_INDEX
ctrl = readq(cluster_info->cluster_base + UNCORE_CONTROL_INDEX);
control = readq(cluster_info->cluster_base + UNCORE_CONTROL_INDEX);
writeq(control, cluster_info->cluster_base + UNCORE_CONTROL_INDEX);
control = readq(cluster_info->cluster_base + UNCORE_CONTROL_INDEX);
writeq(control, (cluster_info->cluster_base + UNCORE_CONTROL_INDEX));
control = readq(cluster_info->cluster_base + UNCORE_CONTROL_INDEX);