diff options
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 977cc1660a83..11b7d6638991 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -380,6 +380,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_S390_SKEYS: case KVM_CAP_S390_IRQ_STATE: case KVM_CAP_S390_USER_INSTR0: + case KVM_CAP_S390_AIS: r = 1; break; case KVM_CAP_S390_MEM_OP: @@ -544,6 +545,20 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) VM_EVENT(kvm, 3, "ENABLE: CAP_S390_RI %s", r ? "(not available)" : "(success)"); break; + case KVM_CAP_S390_AIS: + mutex_lock(&kvm->lock); + if (kvm->created_vcpus) { + r = -EBUSY; + } else { + set_kvm_facility(kvm->arch.model.fac_mask, 72); + set_kvm_facility(kvm->arch.model.fac_list, 72); + kvm->arch.float_int.ais_enabled = 1; + r = 0; + } + mutex_unlock(&kvm->lock); + VM_EVENT(kvm, 3, "ENABLE: AIS %s", + r ? "(not available)" : "(success)"); + break; case KVM_CAP_S390_GS: r = -EINVAL; mutex_lock(&kvm->lock); |