esca_sigp_ctrl
union esca_sigp_ctrl sigp_ctrl;
union esca_sigp_ctrl sigp_ctrl = sca->cpu[vcpu->vcpu_id].sigp_ctrl;
union esca_sigp_ctrl *sigp_ctrl = &sca->cpu[vcpu->vcpu_id].sigp_ctrl;
union esca_sigp_ctrl old_val, new_val = {.scn = src_id, .c = 1};
union esca_sigp_ctrl *sigp_ctrl = &sca->cpu[vcpu->vcpu_id].sigp_ctrl;