| // Copyright 2022 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| //! Constants from Hyper-V Top Level Functional Specification. |
| //! This comes from the document published here: |
| //! <https://github.com/MicrosoftDocs/Virtualization-Documentation/raw/live/tlfs/Hypervisor%20Top%20Level%20Functional%20Specification%20v6.0b.pdf> |
| |
| /// CPUID Leaf Range Register. |
| pub const HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS: u32 = 0x40000000; |
| /// Start of CPUID information for Hyper-V. |
| pub const HYPERV_CPUID_MIN: u32 = 0x40000005; |
| /// Hypervisor Feature Identification Register. |
| pub const HYPERV_CPUID_FEATURES: u32 = 0x40000003; |
| |
| /// Feature for Frequency MSR availability. |
| pub const HV_FEATURE_FREQUENCY_MSRS_AVAILABLE: u32 = 1 << 8; |
| |
| // Group A features. |
| |
| /// Privilege bit for partition reference TSC register. |
| pub const HV_MSR_REFERENCE_TSC_AVAILABLE: u32 = 1 << 9; |
| /// Privilege bit showing Partition Local APIC and TSC frequency registers availability. |
| pub const HV_ACCESS_FREQUENCY_MSRS: u32 = 1 << 11; |
| /// Privilege bit for AccessTscInvariantControls. |
| pub const HV_ACCESS_TSC_INVARIANT: u32 = 1 << 15; |
| |
| /// MSR definitions. |
| pub const HV_X64_MSR_TSC_INVARIANT_CONTROL: u32 = 0x40000118; |
| pub const HV_X64_MSR_APIC_FREQUENCY: u32 = 0x40000023; |
| pub const HV_X64_MSR_TSC_FREQUENCY: u32 = 0x40000022; |
