diff options
Diffstat (limited to 'arch/s390/kvm/intercept.c')
| -rw-r--r-- | arch/s390/kvm/intercept.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c index 252157181302..dfd0ca2638fa 100644 --- a/arch/s390/kvm/intercept.c +++ b/arch/s390/kvm/intercept.c @@ -351,8 +351,26 @@ static int handle_partial_execution(struct kvm_vcpu *vcpu) return -EOPNOTSUPP; } +static int handle_operexc(struct kvm_vcpu *vcpu) +{ + vcpu->stat.exit_operation_exception++; + trace_kvm_s390_handle_operexc(vcpu, vcpu->arch.sie_block->ipa, + vcpu->arch.sie_block->ipb); + + if (vcpu->arch.sie_block->ipa == 0xb256 && + test_kvm_facility(vcpu->kvm, 74)) + return handle_sthyi(vcpu); + + if (vcpu->arch.sie_block->ipa == 0 && vcpu->kvm->arch.user_instr0) + return -EOPNOTSUPP; + + return kvm_s390_inject_program_int(vcpu, PGM_OPERATION); +} + int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu) { + int rc, per_rc = 0; + if (kvm_is_ucontrol(vcpu->kvm)) return -EOPNOTSUPP; @@ -361,7 +379,8 @@ int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu) case 0x18: return handle_noop(vcpu); case 0x04: - return handle_instruction(vcpu); + rc = handle_instruction(vcpu); + break; case 0x08: return handle_prog(vcpu); case 0x14: @@ -372,9 +391,19 @@ int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu) return handle_validity(vcpu); case 0x28: return handle_stop(vcpu); + case 0x2c: + rc = handle_operexc(vcpu); + break; case 0x38: - return handle_partial_execution(vcpu); + rc = handle_partial_execution(vcpu); + break; default: return -EOPNOTSUPP; } + + /* process PER, also if the instrution is processed in user space */ + if (vcpu->arch.sie_block->icptstatus & 0x02 && + (!rc || rc == -EOPNOTSUPP)) + per_rc = kvm_s390_handle_per_ifetch_icpt(vcpu); + return per_rc ? per_rc : rc; } |