KVM: s390: Fix SIGP set prefix ioctl

This patch fixes the SET PREFIX interrupt if triggered by userspace.
Until now, it was not necessary, but life migration will need it. In
addition, it helped me creating SMP support for my kvm_crashme tool
(lets kvm execute random guest memory content).

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index f4fe28a2521a10aa7e5d8c99d58c5e83603b631e..0189356fe2098cb3f6ddd61434da623b8a7c9cfa 100644 (file)
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -555,9 +555,14 @@ int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
                VCPU_EVENT(vcpu, 3, "inject: program check %d (from user)",
                           s390int->parm);
                break;
+       case KVM_S390_SIGP_SET_PREFIX:
+               inti->prefix.address = s390int->parm;
+               inti->type = s390int->type;
+               VCPU_EVENT(vcpu, 3, "inject: set prefix to %x (from user)",
+                          s390int->parm);
+               break;
        case KVM_S390_SIGP_STOP:
        case KVM_S390_RESTART:
-       case KVM_S390_SIGP_SET_PREFIX:
        case KVM_S390_INT_EMERGENCY:
                VCPU_EVENT(vcpu, 3, "inject: type %x", s390int->type);
                inti->type = s390int->type;