---
title: HV_VMX_VALID_MSR_IA32_FIXED_CTR_CTRL
framework: hypervisor
role: symbol
role_heading: Global Variable
path: hypervisor/hv_vmx_valid_msr_ia32_fixed_ctr_ctrl
---

# HV_VMX_VALID_MSR_IA32_FIXED_CTR_CTRL

The bitmask fo the supported fields of the Fixed-Function-Counter Control Register.

## Declaration

```swift
var HV_VMX_VALID_MSR_IA32_FIXED_CTR_CTRL: Int { get }
```

## See Also

### Fields

- [HV_VMX_INFO_MSR_IA32_ARCH_CAPABILITIES](hypervisor/hv_vmx_info_msr_ia32_arch_capabilities.md)
- [HV_VMX_INFO_MSR_IA32_PERF_CAPABILITIES](hypervisor/hv_vmx_info_msr_ia32_perf_capabilities.md)
- [HV_VMX_VALID_MSR_IA32_PERFEVNTSEL](hypervisor/hv_vmx_valid_msr_ia32_perfevntsel.md)
- [HV_VMX_VALID_MSR_IA32_PERF_GLOBAL_CTRL](hypervisor/hv_vmx_valid_msr_ia32_perf_global_ctrl.md)
- [HV_VMX_VALID_MSR_IA32_PERF_GLOBAL_STATUS](hypervisor/hv_vmx_valid_msr_ia32_perf_global_status.md)
- [HV_VMX_VALID_MSR_IA32_DEBUGCTL](hypervisor/hv_vmx_valid_msr_ia32_debugctl.md)
- [HV_VMX_VALID_MSR_IA32_SPEC_CTRL](hypervisor/hv_vmx_valid_msr_ia32_spec_ctrl.md)
- [HV_VMX_NEED_MSR_IA32_SPEC_CTRL](hypervisor/hv_vmx_need_msr_ia32_spec_ctrl.md)