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:
Jun. 15, 2004
Filed:
Oct. 07, 1999
Applicant:
Inventors:
Richard G. Russell, Austin, TX (US);
David F. Tobias, Pflugerville, TX (US);
Assignee:
Advanced Micro Devices, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/24 ;
U.S. Cl.
CPC ...
G06F 1/24 ;
Abstract
A system is provided that contains multiple control register and descriptor table register sets so that an execution context switch between X86 protected mode operating systems can be performed with minimal processing overhead. Upon receipt of a protected instruction determined to be a meta-protected instruction, the system calls a meta virtual machine (MVM) that performs the functions necessary to shift execution contexts.