FN_VMB_CHANNEL_SET_INTERRUPT_LATENCY callback function (vmbuskernelmodeclientlibapi.h)

[Some information relates to pre-released product which may be substantially modified before it's commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here.]

Guest VM updates to the outgoing monitor latency for MNF interrupts.

Syntax

FN_VMB_CHANNEL_SET_INTERRUPT_LATENCY FnVmbChannelSetInterruptLatency;

NTSTATUS FnVmbChannelSetInterruptLatency(
  VMBCHANNEL Channel,
  UINT16 Latency,
  PUINT16 OriginalLatency
)
{...}

Parameters

Channel

A handle for the channel. Allocated by VmbChannelAllocate.

Latency

The desired monitor latency in 100ns units.

OriginalLatency

On success, set to the previous latency value.

Return value

Returns STATUS_SUCCESS if the operation succeeds, or an appropriate NTSTATUS error code otherwise.

Remarks

This call is valid for opened channels, that is between the calls to EvtChannelOpened and EvtChannelClosed, inclusive.

Important

This function is called through the VMBus Kernel Mode Client Library (KMCL) interface, provided by the Vmbkmcl.sys bus driver. This is a client function accessed from the KMCL_CLIENT_INTERFACE_V1 structure.

For more information, see the Remarks section of the KMCL_CLIENT_INTERFACE_V1.

Requirements

Requirement	Value
Minimum supported client	Windows 10, version 1803
Header	vmbuskernelmodeclientlibapi.h