Computer system para-virtualization using a hypervisor that is implemented in a partition of the host system

摘要: A virtualization infrastructure that allows multiple guest partitions (24, 26, 28) to run within a host hardware partition (10). The system is divided into distinct logical or virtual and special (12-14, 16, 18, 20, 22) are implemented control resource management physical I/O device drivers are, in turn, used by operating systems other 28). Host runs as tracking application 'ultravisor' (14), while decisions performed higher level command (20) based on policies maintained separate operations (22). conventional hypervisor (32) reduced context switching containment element (monitor) for the respective 28), functionality ultravisor (14). (14) maintains master in-memory database (33) of allocations serves channel accept transactional requests assignment resources It also provides individual read-only views associated monitors. redundant (16, 18). Operating communicate with 18) via memory channels established modified access monitors implement call interface through which 18), any (12-13, may initiate communications each so they do not attempt use 'broken' instructions x86 complete must resolve inserting traps.