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Method for firmware isolation

  • US 20090063835A1
  • Filed: 08/30/2007
  • Published: 03/05/2009
  • Est. Priority Date: 08/30/2007
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining if an isolation driver is present in a non-volatile storage of a system and if so, determining if a processor of the system supports virtualization and if so, launching the isolation driver in a first privilege level, the first privilege different than a system privilege level and user privilege level;

    creating a 1;

    1 virtual mapping between a virtual address and a physical address, wherein the physical address is to be accessed using a page directory entry of a page directory and a page table entry of a page table using the isolation driver;

    controlling access to a memory page associated with the page table entry based on a plurality of availability bits of the page table entry.

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