MSR_FIDVID_STATUS
rdmsr(MSR_FIDVID_STATUS, lo, hi);
rdmsr(MSR_FIDVID_STATUS, lo, hi);
rdmsr(MSR_FIDVID_STATUS, lo, maxvid);
rdmsr(MSR_FIDVID_STATUS, lo, hi);
lseek(fd, MSR_FIDVID_STATUS, SEEK_CUR);