---
title: HV_ION_NONE
framework: Hypervisor
role: symbol
role_heading: Global Variable
path: hypervisor/hv_ion_none
---

# HV_ION_NONE

The value that represents a request for no notifications.

## Declaration

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

## Discussion

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(_:_:_:_:_:).

## See Also

### Notifier options

- [HV_ION_ANY_SIZE](hypervisor/hv_ion_any_size.md)
- [HV_ION_ANY_VALUE](hypervisor/hv_ion_any_value.md)
- [HV_ION_EXIT_FULL](hypervisor/hv_ion_exit_full.md)