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| author | Janosch Frank <frankja@linux.vnet.ibm.com> | 2016-05-09 14:14:01 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-10 12:07:11 +0200 |
| commit | a011eeb2a3d6cd778eb63bea0bf149ebbe658ab5 (patch) | |
| tree | 9e0ef8496b793e205fb96efbdacab329f1ad9bcc /arch/s390/kvm/intercept.c | |
| parent | 022bd2d11cc51f62e873a09bcae8016b10950194 (diff) | |
| download | linux-a011eeb2a3d6cd778eb63bea0bf149ebbe658ab5.tar.gz | |
KVM: s390: Add operation exception interception handler
This commit introduces code that handles operation exception interceptions. With this handler we can emulate instructions by using illegal opcodes. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/intercept.c')
| -rw-r--r-- | arch/s390/kvm/intercept.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c index 2e6b54e4d3f9..09c13db1416f 100644 --- a/arch/s390/kvm/intercept.c +++ b/arch/s390/kvm/intercept.c @@ -349,6 +349,15 @@ 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); + + return kvm_s390_inject_program_int(vcpu, PGM_OPERATION); +} + int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu) { if (kvm_is_ucontrol(vcpu->kvm)) @@ -370,6 +379,8 @@ int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu) return handle_validity(vcpu); case 0x28: return handle_stop(vcpu); + case 0x2c: + return handle_operexc(vcpu); case 0x38: return handle_partial_execution(vcpu); default: |