aboutsummaryrefslogtreecommitdiff
path: root/virt/kvm
diff options
context:
space:
mode:
Diffstat (limited to 'virt/kvm')
-rw-r--r--virt/kvm/kvm_main.c29
1 files changed, 16 insertions, 13 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index f6cd14d2f0d..5da9f02a2a6 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -504,6 +504,7 @@ static struct kvm *kvm_create_vm(unsigned long type)
mutex_init(&kvm->irq_lock);
mutex_init(&kvm->slots_lock);
atomic_set(&kvm->users_count, 1);
+ INIT_LIST_HEAD(&kvm->devices);
r = kvm_init_mmu_notifier(kvm);
if (r)
@@ -581,6 +582,19 @@ void kvm_free_physmem(struct kvm *kvm)
kfree(kvm->memslots);
}
+static void kvm_destroy_devices(struct kvm *kvm)
+{
+ struct list_head *node, *tmp;
+
+ list_for_each_safe(node, tmp, &kvm->devices) {
+ struct kvm_device *dev =
+ list_entry(node, struct kvm_device, vm_node);
+
+ list_del(node);
+ dev->ops->destroy(dev);
+ }
+}
+
static void kvm_destroy_vm(struct kvm *kvm)
{
int i;
@@ -600,6 +614,7 @@ static void kvm_destroy_vm(struct kvm *kvm)
kvm_arch_flush_shadow_all(kvm);
#endif
kvm_arch_destroy_vm(kvm);
+ kvm_destroy_devices(kvm);
kvm_free_physmem(kvm);
cleanup_srcu_struct(&kvm->srcu);
kvm_arch_free_vm(kvm);
@@ -2195,23 +2210,11 @@ static long kvm_device_ioctl(struct file *filp, unsigned int ioctl,
}
}
-void kvm_device_get(struct kvm_device *dev)
-{
- atomic_inc(&dev->users);
-}
-
-void kvm_device_put(struct kvm_device *dev)
-{
- if (atomic_dec_and_test(&dev->users))
- dev->ops->destroy(dev);
-}
-
static int kvm_device_release(struct inode *inode, struct file *filp)
{
struct kvm_device *dev = filp->private_data;
struct kvm *kvm = dev->kvm;
- kvm_device_put(dev);
kvm_put_kvm(kvm);
return 0;
}
@@ -2257,7 +2260,6 @@ static int kvm_ioctl_create_device(struct kvm *kvm,
dev->ops = ops;
dev->kvm = kvm;
- atomic_set(&dev->users, 1);
ret = ops->create(dev, cd->type);
if (ret < 0) {
@@ -2271,6 +2273,7 @@ static int kvm_ioctl_create_device(struct kvm *kvm,
return ret;
}
+ list_add(&dev->vm_node, &kvm->devices);
kvm_get_kvm(kvm);
cd->fd = ret;
return 0;