ulParm1 (ULONG) - in/out
Parameter usage depends on the command specified:
CMD_KI_RDCNT
CPUUTIL CPUUtil[4]; /* For processor IDs 0, 1, 2, and 3 */
since processor numbers and arrays are both 0-based. ulParm1 would be set to the address of CPUUtil[0].
ulParm2 and ulParm3 are not used and should be set to zero.