// d3dkmddi.h

DXGKDDI_SETVIRTUALMACHINEDATA DxgkddiSetvirtualmachinedata;

NTSTATUS DxgkddiSetvirtualmachinedata(
  IN_CONST_HANDLE hAdapter,
  IN_CONST_PDXGKARG_SETVIRTUALMACHINEDATA Args
)
{...}
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Windows Driver Kit DDI reference (nc-d3dkmddi-dxgkddi_setvirtualmachinedata)

DXGKDDI_SETVIRTUALMACHINEDATA callback function

Description

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

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.

DXGKDDI_SETVIRTUALMACHINEDATA - NtDoc