---
title: "hv_gic_set_msi_reg(_:_:)"
framework: Hypervisor
role: symbol
role_heading: Function
platforms: [macOS 15.0+]
path: "hypervisor/hv_gic_set_msi_reg(_:_:)"
---

# hv_gic_set_msi_reg(_:_:)

Writes to a generic interrupt controller distributor message signaled interrupt (MSI) register.

## Declaration

```swift
func hv_gic_set_msi_reg(_ reg: hv_gic_msi_reg_t, _ value: UInt64) -> hv_return_t
```

## Parameters

- `reg`: The enumeration value that represents the GIC distributor MSI register.
- `value`: The GIC distributor MSI register value that the framework writes.

## Return Value

Return Value HV_SUCCESS on success; otherwise, an error code.

## See Also

### Getting and setting registers

- [hv_gic_get_distributor_reg(_:_:)](hypervisor/hv_gic_get_distributor_reg(_:_:).md)
- [hv_gic_get_msi_reg(_:_:)](hypervisor/hv_gic_get_msi_reg(_:_:).md)
- [hv_gic_get_icc_reg(_:_:_:)](hypervisor/hv_gic_get_icc_reg(_:_:_:).md)
- [hv_gic_get_ich_reg(_:_:_:)](hypervisor/hv_gic_get_ich_reg(_:_:_:).md)
- [hv_gic_get_icv_reg(_:_:_:)](hypervisor/hv_gic_get_icv_reg(_:_:_:).md)
- [hv_gic_get_redistributor_reg(_:_:_:)](hypervisor/hv_gic_get_redistributor_reg(_:_:_:).md)
- [hv_gic_set_distributor_reg(_:_:)](hypervisor/hv_gic_set_distributor_reg(_:_:).md)
- [hv_gic_set_icc_reg(_:_:_:)](hypervisor/hv_gic_set_icc_reg(_:_:_:).md)
- [hv_gic_set_ich_reg(_:_:_:)](hypervisor/hv_gic_set_ich_reg(_:_:_:).md)
- [hv_gic_set_icv_reg(_:_:_:)](hypervisor/hv_gic_set_icv_reg(_:_:_:).md)
- [hv_gic_set_redistributor_reg(_:_:_:)](hypervisor/hv_gic_set_redistributor_reg(_:_:_:).md)