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# HV_ION_NONE

The value that represents a request for no notifications.

```
var HV_ION_NONE: Int { get }
```

## Discussion

Use this value to clear the I/O notifier’s notification request mask when you no longer want to receive notifications for any notifier event type. This only stops the delivery of notifications, it doesn’t remove notifiers. To remove a specific notifier use [`hv_vm_remove_pio_notifier(_:_:_:_:_:)`](/documentation/Hypervisor/hv_vm_remove_pio_notifier(_:_:_:_:_:)).

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