07984108 is referenced by 29 patents and cites 17 patents.

Embodiments of the present invention provide a virtualization infrastructure that allows multiple guest operating systems to run and communicate amongst each other within a host hardware partition. The host system is divided into distinct logical/virtual partitions and special infrastructure partitions are implemented to control resource management and to control physical I/O device drivers that are, in turn, used by operating systems in other distinct logical/virtual guest partitions. Host hardware resource management runs as a tracking application in a resource management “ultravisor” partition, while host resource management decisions are performed in a higher-level command partition based on policies maintained in a separate operations partition. The ultravisor partition maintains the master database of the hardware resource allocations and serves as a command channel to accept transactional requests for assignment of resources to partitions while also providing individual read-only views of individual partitions to the associated partition monitors.

Title
Computer system para-virtualization using a hypervisor that is implemented in a partition of the host system
Application Number
10/575632
Publication Number
7984108 (B2)
Application Date
October 7, 2004
Publication Date
July 19, 2011
Inventor
James R Hunter Jr
Chadds Ford
PA, US
Aravindh Puthiyaparambil
Phoenixville
PA, US
Rajagopalan Subrahmanian
Phoenixville
PA, US
Terrence V Powderly
East Fallowfield
PA, US
John A Landis
Pipersville
PA, US
Agent
Richard J Gregson
Assignee
Unisys Corporation
PA, US
IPC
G06F 15/167
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