HvCallRetargetDeviceInterrupt

This hypercall retargets a device interrupt, which may be useful for rebalancing IRQs within a guest.

Interface

HV_STATUS
HvRetargetDeviceInterrupt(
   _In_ HV_PARTITION_ID PartitionId,
   _In_ UINT64 DeviceId,
   _In_ HV_INTERRUPT_ENTRY InterruptEntry,
   _In_ UINT64 Reserved,
   _In_ HV_DEVICE_INTERRUPT_TARGET InterruptTarget
   );

Call Code

0x007e (Simple)

Input Parameters

Name	Offset	Size	Information Provided
PartitionId	0	8	Partition Id (can be HV_PARTITION_SELF)
DeviceId	8	6	Supplies the unique (within a guest) logical device ID that is assigned by the host.
RsvdZ	32	8	Reserved
InterruptEntry	16	16	Supplies the MSI address and data that identifies the interrupt.
InterruptTarget	40	16	Specifies a mask representing VPs to target

See also

HV_INTERRUPT_ENTRY

HV_DEVICE_INTERRUPT_TARGET