DXGKDDI_SETVIRTUALMACHINEDATA callback function (d3dkmddi.h)

Dxgkrnl calls DxgkddiSetVirtualMachineData to pass information about a virtual machine (VM) to the kernel-mode display driver (KMD).

Syntax

DXGKDDI_SETVIRTUALMACHINEDATA DxgkddiSetvirtualmachinedata;

NTSTATUS DxgkddiSetvirtualmachinedata(
  IN_CONST_HANDLE hAdapter,
  IN_CONST_PDXGKARG_SETVIRTUALMACHINEDATA Args
)
{...}

Parameters

hAdapter

[in] The logical adapter for which to set VM data.

Args

[in] Pointer to a DXGKARG_SETVIRTUALMACHINEDATA structure that contains arguments to set VM data.

Return value

Return STATUS_SUCCESS if the operation succeeds. Otherwise, return an appropriate NTSTATUS Values error code.

Remarks

Client GPU virtualization provides an isolation layer at the Dxgkrnl level for a particular process that runs in the context of a dedicated VM. For the purpose of GPU hardware scheduling, work submitted by the VM dedicated to such a process is simply treated as a separate GPU client process.

Server GPU virtualization provides much stronger isolation, where VMs are completely isolated from each other at the OS Hypervisor level and each VM is guaranteed a fixed GPU time slice, within which they run their own scheduling algorithm across priority bands, processes, and contexts.

For more information, see GPU paravitualization.

Requirements

Requirement	Value
Minimum supported client	Windows 10, version 1803 (WDDM 2.4)
Header	d3dkmddi.h
IRQL	PASSIVE_LEVEL

See also

DXGKARG_SETVIRTUALMACHINEDATA