forked from Minki/linux
KVM: s390: ignore sigp stop overinitiative
In __inject_sigp_stop() do nothing when the CPU is already in stopped state. Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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@ -160,12 +160,15 @@ static int __inject_sigp_stop(struct kvm_s390_local_interrupt *li, int action)
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inti->type = KVM_S390_SIGP_STOP;
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spin_lock_bh(&li->lock);
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if ((atomic_read(li->cpuflags) & CPUSTAT_STOPPED))
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goto out;
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list_add_tail(&inti->list, &li->list);
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atomic_set(&li->active, 1);
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atomic_set_mask(CPUSTAT_STOP_INT, li->cpuflags);
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li->action_bits |= action;
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if (waitqueue_active(&li->wq))
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wake_up_interruptible(&li->wq);
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out:
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spin_unlock_bh(&li->lock);
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return 0; /* order accepted */
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