Selective register save and restore upon context switch...

Electrical computers and digital processing systems: virtual mac – Virtual machine task or process management

Reexamination Certificate

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Details

C718S108000

Reexamination Certificate

active

07904903

ABSTRACT:
In some embodiments, the invention involves saving limited context information when transitioning between virtual machines. A predetermined set of instructions and events cause a trap. A bit or flag is set to indicate that the event has occurred within a virtual machine. The virtual machine monitor determines whether specific register sets must be saved or restored upon a context switch, based on whether the flag has been set. Other embodiments are described and claimed.

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