# hv_vcpu_get_vtimer_mask(_:_:) Gets the virtual timer mask. ``` func hv_vcpu_get_vtimer_mask(_ vcpu: hv_vcpu_t, _ vtimer_is_masked: UnsafeMutablePointer) -> hv_return_t ``` ## Parameters `vcpu` The ID of the vCPU instance. `vtimer_is_masked` The value of the mask. ## Return Value [`HV_SUCCESS`](/documentation/Hypervisor/HV_SUCCESS) if the operation was successful, otherwise an error code specified in [`hv_return_t`](/documentation/Hypervisor/hv_return_t). ## Discussion --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)