# hv_gic_get_icv_reg(_:_:_:) Writes a generic interrupt controller’s (GIC) ICV system register. ``` func hv_gic_get_icv_reg(_ vcpu: hv_vcpu_t, _ reg: hv_gic_icv_reg_t, _ value: UnsafeMutablePointer) -> hv_return_t ``` ## Parameters `vcpu` The handle for the vCPU. `reg` The value that represents the GIC ICV system register `value` GIC ICV register value to write. ## Return Value [`HV_SUCCESS`](/documentation/Hypervisor/HV_SUCCESS) on success; otherwise, an error code. ## 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)