CPUID Information Provided by the Hypervisor

The hypervisor provides certain information to guests using a special range of CPUID indices. The following table reflects the current hypervisor behavior for the CPUID instruction for these values.

CPUID information provided by the hypervisor

Index Register Name Hypervisor value

0x40000000

All

Hypervisor CPUID range and vendor ID signature

See Standard Hypervisor CPUID Leaves.

0x40000001

All

Hypervisor vendor-neutral interface identification

0x40000002

All

Operating system identity

0x40000003

All

Feature identification

0x40000004

All

Implementation recommendations

0x40000005

All

Implementation limits

 

 

 

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Build date: 11/16/2013

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