HV_GENERIC_SET_ALL
ipi_arg->vp_set.format = HV_GENERIC_SET_ALL;
all_cpus = send_ipi_ex.vp_set.format == HV_GENERIC_SET_ALL;
ipi_ex->vp_set.format = HV_GENERIC_SET_ALL;
IPI_VECTOR, HV_GENERIC_SET_ALL);
flush_ex->hv_vp_set.format = HV_GENERIC_SET_ALL;
flush_ex->hv_vp_set.format = HV_GENERIC_SET_ALL;
flush_ex->hv_vp_set.format = HV_GENERIC_SET_ALL;
flush_ex->hv_vp_set.format = HV_GENERIC_SET_ALL;