Pcie Device Remapping [verified] Jun 2026

However, the rise of virtualization and containerization has broken this simple model. When you run a virtual machine (VM) using KVM, VMware, or Hyper-V, the host hypervisor owns the physical PCIe devices. The guest OS expects to see its own set of PCIe devices, with its own addresses, and it expects to perform DMA without corrupting the host’s memory or the memory of other VMs.

In consumer hardware, "PCIe Remapping" is often a BIOS toggle that alters how the motherboard's chipset views M.2 and PCIe slots. pcie device remapping

See remapping stats: