---
title: HV_FEATURE_REG_ID_AA64DFR0_EL1
framework: hypervisor
role: symbol
role_heading: Global Variable
path: hypervisor/hv_feature_reg_id_aa64dfr0_el1
---

# HV_FEATURE_REG_ID_AA64DFR0_EL1

The value that identifies debug feature register 0, EL1 (DFR0_EL1).

## Declaration

```swift
var HV_FEATURE_REG_ID_AA64DFR0_EL1: hv_feature_reg_t { get }
```

## See Also

### Feature Registers

- [HV_FEATURE_REG_ID_AA64DFR1_EL1](hypervisor/hv_feature_reg_id_aa64dfr1_el1.md)
- [HV_FEATURE_REG_ID_AA64ISAR0_EL1](hypervisor/hv_feature_reg_id_aa64isar0_el1.md)
- [HV_FEATURE_REG_ID_AA64ISAR1_EL1](hypervisor/hv_feature_reg_id_aa64isar1_el1.md)
- [HV_FEATURE_REG_ID_AA64MMFR0_EL1](hypervisor/hv_feature_reg_id_aa64mmfr0_el1.md)
- [HV_FEATURE_REG_ID_AA64MMFR1_EL1](hypervisor/hv_feature_reg_id_aa64mmfr1_el1.md)
- [HV_FEATURE_REG_ID_AA64MMFR2_EL1](hypervisor/hv_feature_reg_id_aa64mmfr2_el1.md)
- [HV_FEATURE_REG_ID_AA64PFR0_EL1](hypervisor/hv_feature_reg_id_aa64pfr0_el1.md)
- [HV_FEATURE_REG_ID_AA64PFR1_EL1](hypervisor/hv_feature_reg_id_aa64pfr1_el1.md)
- [HV_FEATURE_REG_CLIDR_EL1](hypervisor/hv_feature_reg_clidr_el1.md)
- [HV_FEATURE_REG_CTR_EL0](hypervisor/hv_feature_reg_ctr_el0.md)
- [HV_FEATURE_REG_DCZID_EL0](hypervisor/hv_feature_reg_dczid_el0.md)
- [HV_FEATURE_REG_ID_AA64SMFR0_EL1](hypervisor/hv_feature_reg_id_aa64smfr0_el1.md)
- [HV_FEATURE_REG_ID_AA64ZFR0_EL1](hypervisor/hv_feature_reg_id_aa64zfr0_el1.md)