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:
Apr. 17, 2007
Filed:
Mar. 10, 2004
Udayakumar Cholleti, Cupertino, CA (US);
Michael T. Clayton, San Francisco, CA (US);
Anthony G. Sumpter, Palo Alto, CA (US);
Udayakumar Cholleti, Cupertino, CA (US);
Michael T. Clayton, San Francisco, CA (US);
Anthony G. Sumpter, Palo Alto, CA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
Provided is a method and apparatus for registering requests to access physical memory in a physical address mapping framework. Specifically, a device can register in the physical address mapping framework before accessing physical memory, thus permitting an operating system to identify the device when it is necessary to relocate pages in physical memory. The physical address mapping framework can be any structure that permits registration. For example, the structure can be a list or a tree. When relocating physical memory, all accesses registered in the physical address mapping framework are restricted. Then, the device is notified to stop accessing physical memory via information stored in the physical address mapping framework. After the relocation, the device is notified to resume accessing physical memory via information stored in the physical address mapping framework.