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Virtual machine control method and program thereof

  • US 20060294519A1
  • Filed: 06/22/2006
  • Published: 12/28/2006
  • Est. Priority Date: 06/27/2005
  • Status: Abandoned Application
First Claim
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1. A control method for a virtual machine provided by switching and executing multiple programs jointly shared between at least one CPU and memory, the method comprising:

  • a process for setting a first memory protection table for defining a memory area accessible by a first program executed on the CPU, a process for setting a second memory protection table for defining a memory area accessible by a second program executed on the CPU, a process for detecting the start of execution of the first or the second program, a process for selecting and switching to either of a first or the second memory protection table according to the detected first or the second program, and a process for checking the first or the second memory protection table with the memory management unit for the CPU, and protecting the memory area defined in the first or the second memory protection table.

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