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:
Jul. 19, 2011
Filed:
Mar. 02, 2004
Carl A. Waldspurger, Atherton, CA (US);
Ole Agesen, Palo Alto, CA (US);
Xiaoxin Chen, Fremont, CA (US);
John R. Zedlewski, San Francisco, CA (US);
Tal Garfinkel, Granite Bay, CA (US);
Carl A. Waldspurger, Atherton, CA (US);
Ole Agesen, Palo Alto, CA (US);
Xiaoxin Chen, Fremont, CA (US);
John R. Zedlewski, San Francisco, CA (US);
Tal Garfinkel, Granite Bay, CA (US);
VMware, Inc., Palo Alto, CA (US);
Abstract
Computer-executable instructions in a computer are verified dynamically, after they have been identified for submission for execution, but before they are actually executed. In particular, for at least one current instruction that has been identified for submission to the processor for execution, an identifying value, for example, a hash value, is determined for a current memory block that contains the current instruction. The identifying value of the current memory block is then compared with a set of reference values. If the identifying value satisfies a validation condition, then execution of the current instruction by the processor is allowed. If the validation condition is not satisfied, then a response is generated: In the common case, execution of the current instruction is not allowed, or some other predetermined measure is taken.