AgpReleaseVirtual routine

The AgpReleaseVirtual function frees system memory reserved by a previous call to AgpReserveVirtual.

Syntax


PAGP_RELEASE_VIRTUAL AgpReleaseVirtual;

VOID APIENTRY AgpReleaseVirtual(
  _In_ PVOID HwDeviceExtension,
  _In_ PVOID VirtualReserveContext
)
{ ... }

Parameters

HwDeviceExtension [in]

Pointer to the miniport driver's device extension.

VirtualReserveContext [in]

Is the context handle that identifies the reserved virtual address range to be released. This context was obtained from AgpReleaseVirtual.

Return value

None

Remarks

The miniport driver must call AgpFreeVirtual to unmap all committed memory within the range identified by VirtualReserveContext before calling AgpReleaseVirtual to release it.

Requirements

Target platform

Version

Available in Windows 2000 and later versions of the Windows operating systems.

Header

Videoagp.h (include Video.h)

IRQL

PASSIVE_LEVEL

See also

AgpFreePhysical
AgpReservePhysical

 

 

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