×

Method and apparatus for supporting address translation in a virtual machine environment

  • US 7,836,275 B2
  • Filed: 05/22/2008
  • Issued: 11/16/2010
  • Est. Priority Date: 01/28/2005
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method comprising:

  • creating a shadow page table (PT) hierarchy based on a guest PT hierarchy used by a guest operating system for address translation operations; and

    deriving metadata from the shadow PT hierarchy to determine subsequently which entries of the guest PT hierarchy that are represented in the shadow PT hierarchy were modified, the metadata comprising an active entry list identifying mappings that map pages used by the guest operating system in forming the guest PT hierarchy, and one or more active directory lists identifying higher level mapping structures referencing a lower level structure through which the shadow PT hierarchy is to be accessed.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×