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:
Oct. 24, 2017
Filed:
Dec. 12, 2014
Cisco Technology, Inc., San Jose, CA (US);
Donald Edward Steiss, Richardson, TX (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A page table is a data structure used by a virtual memory system in a computer system to store the mapping between virtual addresses and physical addresses. Embodiments herein use a tree to map a virtual memory address space in the page table. The tree may be an N-ary tree where N is a power of two (e.g., 2, 4, 8, 16, etc.). The tree may include multiple levels that each correspond to a different page table size. For example, an octree includes eight different entries for each child node which may include per-thread sub-entries. Child nodes in the first level of the octree may each correspond to a 512 GiB page, while child nodes in the second level, however, may each have eight entries that correspond to a 64 GiB page. In this manner, an N-ary tree may be used to support a computing system with varying page sizes.