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KVM: s390: SIGP SET PREFIX cleanup

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This patch cleanes up the the SIGP SET PREFIX code.

A SIGP SET PREFIX irq may only be injected if the target vcpu is
stopped. Let's move the checking code into the injection code and
return -EBUSY if the target vcpu is not stopped.

Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand
2014-10-14 09:44:55 +02:00
committed by Christian Borntraeger
parent 9a022067ad
commit a3a9c59a68
2 changed files with 14 additions and 19 deletions
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3
arch/s390/kvm/interrupt.c
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@@ -1026,6 +1026,9 @@ static int __inject_set_prefix(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq)
trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_SIGP_SET_PREFIX,
prefix->address, 0, 2);
if (!is_vcpu_stopped(vcpu))
return -EBUSY;
*prefix = irq->u.prefix;
set_bit(IRQ_PEND_SET_PREFIX, &li->pending_irqs);
return 0;