__vmx_vmresume

Microsoft Specific

Resumes VMX non-root operation by using the current virtual machine control structure (VMCS).

Syntax

unsigned char __vmx_vmresume(
   void);

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

An application can perform a VM-enter operation by using either the __vmx_vmlaunch or __vmx_vmresume function. The __vmx_vmlaunch function can be used only with a VMCS whose launch state is Clear, and the __vmx_vmresume function can be used only with a VMCS whose launch state is Launched. Consequently, use the __vmx_vmclear function to set the launch state of a VMCS to Clear, and then use the __vmx_vmlaunch function for your first VM-enter operation and the __vmx_vmresume function for subsequent VM-enter operations.

The __vmx_vmresume function is equivalent to the VMRESUME 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, search for the PDF document, "Intel Virtualization Technical Specification for the IA-32 Intel Architecture," document number C97063-002, at the Intel Corporation site.

Requirements

Intrinsic	Architecture
__vmx_vmresume	x64

Header file <intrin.h>

END Microsoft Specific

See also

Compiler intrinsics
__vmx_vmlaunch
__vmx_vmclear