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Linux virtualization and PCI passthrough

Oct 16, 2009, 18:32 (0 Talkback[s])
(Other stories by M. Tim Jones)

"Platform device emulation
Before we jump into passthrough, let's explore how device emulation works today in two hypervisor architectures. The first architecture incorporates device emulation within the hypervisor, while the second pushes device emulation to a hypervisor-external application.

"Device emulation within the hypervisor is a common method implemented within the VMware workstation product (an operating system-based hypervisor). In this model, the hypervisor includes emulations of common devices that the various guest operating systems can share, including virtual disks, virtual network adapters, and other necessary platform elements. This particular model is shown in Figure 1."

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