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-rw-r--r--arch/s390/kvm/sigp.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 43079a48cc98..fd7fb5c5ef5d 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -136,6 +136,11 @@ static int __inject_sigp_stop(struct kvm_s390_local_interrupt *li, int action)
inti->type = KVM_S390_SIGP_STOP;
spin_lock_bh(&li->lock);
+ if (li->action_bits & ACTION_STOP_ON_STOP) {
+ /* another SIGP STOP is pending */
+ rc = SIGP_CC_BUSY;
+ goto out;
+ }
if ((atomic_read(li->cpuflags) & CPUSTAT_STOPPED)) {
kfree(inti);
if ((action & ACTION_STORE_ON_STOP) != 0)
@@ -144,8 +149,8 @@ static int __inject_sigp_stop(struct kvm_s390_local_interrupt *li, int action)
}
list_add_tail(&inti->list, &li->list);
atomic_set(&li->active, 1);
- atomic_set_mask(CPUSTAT_STOP_INT, li->cpuflags);
li->action_bits |= action;
+ atomic_set_mask(CPUSTAT_STOP_INT, li->cpuflags);
if (waitqueue_active(li->wq))
wake_up_interruptible(li->wq);
out: