diff options
| -rw-r--r-- | drivers/kvm/kvm_main.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index 38375e2bb70..06314071c6d 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -1865,6 +1865,11 @@ int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module) { int r; + if (kvm_arch_ops) { + printk(KERN_ERR "kvm: already loaded the other module\n"); + return -EEXIST; + } + kvm_arch_ops = ops; if (!kvm_arch_ops->cpu_has_kvm_support()) { @@ -1907,6 +1912,7 @@ void kvm_exit_arch(void) unregister_reboot_notifier(&kvm_reboot_notifier); on_each_cpu(kvm_arch_ops->hardware_disable, 0, 0, 1); kvm_arch_ops->hardware_unsetup(); + kvm_arch_ops = NULL; } static __init int kvm_init(void) |