The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2012
Filed:
Oct. 01, 2009
Oded Horovitz, Palo Alto, CA (US);
Ophir Rachman, Sunnyvale, CA (US);
Wei Xu, Sunnyvale, CA (US);
Adrian Drzewiecki, Los Altos, CA (US);
Xiaoxin Chen, Cupertino, CA (US);
Oded Horovitz, Palo Alto, CA (US);
Ophir Rachman, Sunnyvale, CA (US);
Wei Xu, Sunnyvale, CA (US);
Adrian Drzewiecki, Los Altos, CA (US);
Xiaoxin Chen, Cupertino, CA (US);
VMware, Inc., Palo Alto, CA (US);
Abstract
A method for monitoring a data structure maintained by guest software within a virtual machine is disclosed. Changes to the contents of the data structure are determined, such as by placing write traces on the memory pages containing the data structure. Also, the method involves determining when memory pages containing the data structure are swapped into and/or out of guest physical memory by the guest software, such as by placing write traces on the memory pages containing the guest page table and detecting changes to the present bit of page table entries involved in mapping virtual addresses for the data structure. Information about the contents of the data structure is retained while memory pages containing the data structure are swapped out of guest physical memory.