hv_intr_settarget
err = hv_intr_settarget(sysino, cpus->ci_upaid);
err = hv_intr_settarget(sysino, cpus->ci_cpuid);
err = hv_intr_settarget(sysino, cpus->ci_cpuid);
int64_t hv_intr_settarget(uint64_t sysino, uint64_t cpuid);
return hv_intr_settarget(ino, cpuid);