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Enforcing isolation among plural operating systems

  • US 20040205203A1
  • Filed: 12/19/2003
  • Published: 10/14/2004
  • Est. Priority Date: 03/24/2003
  • Status: Active Grant
First Claim
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1. A system that manages the use, by a plurality of software objects, of a hardware arrangement that includes a physical address space, the system comprising:

  • a security object that determines which portions of the physical address space may be accessed by said plurality of software objects based on a policy of isolation among said plurality of software objects; and

    an access regulator that, for each request from one of the plurality of software objects to access a portion of the physical address space, either allows or disallows the request depending on whether the security object permits access to said portion of the physical address space.

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