Geoff Chappell, Software Analyst
The HviGetHypervisorVersion function obtains the output of a Microsoft-compatible hypervisor’s cpuid leaf 0x40000002.
VOID HviGetHypervisorVersion (HV_HYPERVISOR_VERSION_INFO *);
The one argument provides the address of a structure that is to receive the cpuid output.
The HviGetHypervisorVersion function is exported by name from the kernel in version 10.0 and higher.
The HviGetHypervisorVersion function is not documented.
If cpuid leaf 1 shows that a hypervisor is present and cpuid leaf 0x40000001 confirms that the hypervisor implements Microsoft’s interface—see HviIsHypervisorMicrosoftCompatible—then the function copies to the given address whatever cpuid leaf 0x40000002 produces in the eax, ebx, ecx and edx registers.
Otherwise, the structure at the given address is zeroed.