KVM: Fix adding an smp virtual machine to the vm list

If we add the vm once per vcpu, we corrupt the list if the guest has
multiple vcpus.

Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index 3ff8ee56279..230b25aa469 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -319,6 +319,9 @@ static struct kvm *kvm_create_vm(void)
 
         spin_lock_init(&kvm->lock);
         INIT_LIST_HEAD(&kvm->active_mmu_pages);
+        spin_lock(&kvm_lock);
+        list_add(&kvm->vm_list, &vm_list);
+        spin_unlock(&kvm_lock);
         for (i = 0; i < KVM_MAX_VCPUS; ++i) {
                 struct kvm_vcpu *vcpu = &kvm->vcpus[i];
 
@@ -326,9 +329,6 @@ static struct kvm *kvm_create_vm(void)
                 vcpu->cpu = -1;
                 vcpu->kvm = kvm;
                 vcpu->mmu.root_hpa = INVALID_PAGE;
-                spin_lock(&kvm_lock);
-                list_add(&kvm->vm_list, &vm_list);
-                spin_unlock(&kvm_lock);
         }
         return kvm;
 }