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__vmx_on

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Microsoft Specific

Activates virtual machine extensions (VMX) operation in the processor.

Syntax

unsigned char __vmx_on(
   unsigned __int64 *VmxonRegionPhysicalAddress
);

Parameters

VmxonRegionPhysicalAddress
[in] A pointer to a 64-bit, 4KB-aligned physical address that points to a VMXON region.

Return value

Value Meaning
0 The operation succeeded.
1 The operation failed with extended status available in the VM-instruction error field of the current VMCS.
2 The operation failed without status available.

Remarks

The __vmx_on function corresponds to the VMXON machine instruction. This function supports the interaction of a host's virtual machine monitor with a guest operating system and its applications. For more information, see "Intel 64 and IA-32 Architectures Software Developer’s Manual, Volume 3C: System Programming Guide, Part 3" in the Intel 64 and IA-32 Architecture Developer Manuals.

Requirements

Intrinsic Architecture
__vmx_on x64

Header file <intrin.h>

END Microsoft Specific

See also

Compiler intrinsics