Module dma 

DMA target for PCI devices.

DmaTarget bundles a device’s [GuestMemory] (for DMA reads/writes) and MsiTarget (for MSI interrupt delivery) into a single type.

In hardware, both DMA and MSI are bus-mastered transactions identified by the device’s Requester ID (RID). This type ensures the two always carry a consistent device identity. For SR-IOV devices, calling DmaTarget::with_rid_offset derives both DMA and MSI targets for a specific VF in a single operation — you can’t accidentally end up with mismatched identities.

Structs

DmaTarget

Everything a PCI device needs for bus-mastered transactions: DMA memory access and MSI interrupt delivery.

Enums

DmaPassthrough

How a device’s DMA relates to host passthrough (VFIO assignment).

Traits

DmaTargetIommu

A trait for IOMMU backends that produce per-device guest memory.