---
title: "hv_vcpu_set_space(_:_:)"
framework: Hypervisor
role: symbol
role_heading: Function
platforms: [macOS 10.15+]
path: "hypervisor/hv_vcpu_set_space(_:_:)"
---

# hv_vcpu_set_space(_:_:)

Associates the vCPU instance with an allocated address space.

## Declaration

```swift
func hv_vcpu_set_space(_ vcpu: hv_vcpuid_t, _ asid: hv_vm_space_t) -> hv_return_t
```

## Parameters

- `vcpu`: The instance of the vCPU.
- `asid`: The address space ID.

## Return Value

Return Value HV_SUCCESS if the operation was successful, otherwise an error code specified in hv_return_t.

## Discussion

Discussion important: This function must be called by the owning thread.