PER_EVENT_NULLIFICATION 168 arch/s390/kvm/guestdbg.c if (vcpu->arch.sie_block->gcr[9] & PER_EVENT_NULLIFICATION) PER_EVENT_NULLIFICATION 169 arch/s390/kvm/guestdbg.c vcpu->arch.sie_block->gcr[9] &= ~PER_EVENT_NULLIFICATION;