Data processing: structural design – modeling – simulation – and em – Emulation
Reexamination Certificate
2007-01-02
2007-01-02
Paladini, Albert W. (Department: 2125)
Data processing: structural design, modeling, simulation, and em
Emulation
C703S026000, C710S104000
Reexamination Certificate
active
10971345
ABSTRACT:
In an emulated computing environment, a method is provided for logically decoupling the host operating system from the processor of the computer system with respect to certain processor settings of the processor. A hypervisor of the emulation program replaces some of the processor settings of the processor with processor settings associated with software routines or data structures provided by the guest operating system. The replaced processor settings are written to memory. During this period, when the processor calls a software routine or accesses a data structure associated with the replaced processor setting, the processor will call or access a software routine or access a data structure associated with the guest operating system, bypassing the host operating system and communicating directly with the guest operating system. When the host operating system is to be recoupled to the processor, the processor settings that have been saved to memory are rewritten to the appropriate registers of the processor.
REFERENCES:
patent: 7085705 (2006-08-01), Traut
Microsoft Corporation
Paladini Albert W.
Woodcock & Washburn LLP
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