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1. (WO2018164889) MANAGING GUEST PARTITION ACCESS TO PHYSICAL DEVICES

Pub. No.:    WO/2018/164889    International Application No.:    PCT/US2018/020063
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Thu Mar 01 00:59:59 CET 2018
IPC: G06F 12/1081
G06F 12/1009
Applicants: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventors: HOPPERT, Hadden Mark
HUYBREGTS, Christopher L.
Title: MANAGING GUEST PARTITION ACCESS TO PHYSICAL DEVICES
Abstract:
A computing device includes a host, one or more guest partitions, and one or more physical devices. A physical device can be virtualized, at least in part, by the host and made available to the guest partitions. A physical device includes both a control plane and a data plane. The host provides direct access to at least part of the data plane of a physical device to a guest partition. However, the host virtualizes the control plane of the physical device, exposing a control plane for the physical device to the guest partition that is not the actual control plane of the physical device. Requests to access (e.g., read, write, modify, etc.) the control plane of the physical device are received by the host from the guest partition, and converted as appropriate to the control plane for the physical device.