US Patent 11630782 Hardware offloading for an emulated IOMMU device

Disclosed is a method of managing memory of a virtual machine (VM), including receiving, at a physical input-output memory management unit (IOMMU) of a processing device operating the VM, a request from a VM IOMMU for VM memory address translation for a VM peripheral component interconnect (PCI) device created on the VM; determining, by the physical IOMMU, a corresponding VM memory address translation result based on the request as received and a memory translation table; and transmitting, by the physical IOMMU to the VM IOMMU, the corresponding VM memory address translation result for servicing the request for VM memory address translation of the VM PCI device.