DXGK_GPUPCAPS structure (d3dkmddi.h)
A kernel-mode display driver uses the DXGK_GPUPCAPS structure to identify its GPU partitioning (GPU-P) capabilities.
Syntax
typedef struct _DXGK_GPUPCAPS {
union {
struct {
UINT VirtualMachineHibernation : 1;
UINT HotDriverUpdate : 1;
UINT LiveMigration : 1;
UINT ScatterMapReserve : 1;
#if ...
UINT Reserved : 28;
#else
UINT Reserved : 30;
#endif
};
UINT Value;
} Caps;
} DXGK_GPUPCAPS;
Members
Caps
Union containing the capability flags for the GPU-P device.
Caps.VirtualMachineHibernation
The driver sets this bit if it supports guest hibernation for GPU-P devices. The support for guest hibernation is optional and not required for driver certification. A VM that has hibernation enabled and a GPU-P adapter added will fail to start if the driver doesn't support guest hibernation.
Caps.HotDriverUpdate
The driver sets this bit if it supports hot driver updates for GPU-P devices.
Caps.LiveMigration
The driver sets this bit if it supports live migration for GPU-P devices. Added in Windows 11, version 24H2 (WDDM 3.2).
Caps.ScatterMapReserve
The driver sets this bit if it supports *DxgkDdiSetVirtualGpuResources2, which will be added in a future release. Added in Windows 11, version 24H2 (WDDM 3.2).
Caps.Reserved
Reserved.
Caps.Value
The UINT value that represents the combined bitfields of the GPU-P capabilities.
Remarks
The KMD must fill out these caps in response to a DXGKQAITYPE_GPUPCAPS request. The OS queries for these during device initialization after it calls DxgkDdiStartDevice and only if the adapter supports GPU partitioning.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10, version 1903 |
| Header | d3dkmddi.h |