KVM: async_pf: Allow to wait for outstanding work
On s390 we are not able to cancel work. Instead we will flush the work and wait for
completion.
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index 00980ab..889aad0 100644
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -113,11 +113,16 @@
list_entry(vcpu->async_pf.queue.next,
typeof(*work), queue);
list_del(&work->queue);
+
+#ifdef CONFIG_KVM_ASYNC_PF_SYNC
+ flush_work(&work->work);
+#else
if (cancel_work_sync(&work->work)) {
mmdrop(work->mm);
kvm_put_kvm(vcpu->kvm); /* == work->vcpu->kvm */
kmem_cache_free(async_pf_cache, work);
}
+#endif
}
spin_lock(&vcpu->async_pf.lock);
