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s390/kvm: Interrupt injection bugfix 

EXTERNAL_CALL and EMERGENCY type interrupts need to preserve their interrupt
code parameter when being injected from user space.

Signed-off-by: Jason J. Herne <jjherne@us.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Jason J. Herne 2012-10-02 16:25:36 +02:00 committed by Marcelo Tosatti
parent d151f63f20
commit 82a1273713
1 changed files with 19 additions and 2 deletions
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21
arch/s390/kvm/interrupt.c
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@ -629,11 +629,28 @@ int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
break;
case KVM_S390_SIGP_STOP:
case KVM_S390_RESTART:
case KVM_S390_INT_EXTERNAL_CALL:
case KVM_S390_INT_EMERGENCY:
VCPU_EVENT(vcpu, 3, "inject: type %x", s390int->type);
inti->type = s390int->type;
break;
case KVM_S390_INT_EXTERNAL_CALL:
if (s390int->parm & 0xffff0000) {
kfree(inti);
return -EINVAL;
}
VCPU_EVENT(vcpu, 3, "inject: external call source-cpu:%u",
s390int->parm);
inti->type = s390int->type;
inti->extcall.code = s390int->parm;
break;
case KVM_S390_INT_EMERGENCY:
if (s390int->parm & 0xffff0000) {
kfree(inti);
return -EINVAL;
}
VCPU_EVENT(vcpu, 3, "inject: emergency %u\n", s390int->parm);
inti->type = s390int->type;
inti->emerg.code = s390int->parm;
break;
case KVM_S390_INT_VIRTIO:
case KVM_S390_INT_SERVICE:
default: