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STATUS_HV_INVALID_REGISTER_VALUE
A register write violates the Hyper-V register definition
STATUS_HV_INVALID_REGISTER_VALUE indicates that the register selector was accepted but the supplied value is not valid in the current Hyper-V context. Register fields can contain reserved-zero bits, feature-dependent values, architecture-specific encodings, or state-dependent controls.
Capture the register name, the full value, target partition/VP/VTL context, and the interface feature data used to construct it. Masking unknown bits without checking the register definition can hide a compatibility problem and produce a configuration that differs from what the caller intended.
Useful evidence
- Register identifier, raw value, bitfield decode and target VP/partition context.
- Architecture and feature bits that enable or restrict the register.
- Reserved bits, value ranges and mutually dependent controls.
- The prior register state and the operation that attempted the update.
References
- Microsoft: Virtual Secure Mode and VTLs
- Microsoft: feature and interface discovery
- Linux source: Hyper-V guest initialization
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