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. 06, 2015
Filed:
Feb. 27, 2012
Bhavesh Mehta, Mountain View, CA (US);
Benjamin C. Serebrin, Sunnyvale, CA (US);
Bhavesh Mehta, Mountain View, CA (US);
Benjamin C. Serebrin, Sunnyvale, CA (US);
VMware, Inc., Palo Alto, CA (US);
Abstract
In a computer system having virtual machines, one or more unused bits of a guest virtual address range are allocated for aliasing so that multiple virtually addressed sub-pages can be mapped to a common memory page. When one bit is allocated for aliasing, sub-pages can be virtually addressed at a granularity that is one-half of a memory page. When M bits are allocated for aliasing, sub-pages can be virtually addressed at a granularity that is 1/(2)-th of a memory page. The granularity of page sizes can be selected according to particular use cases. In the case of COW optimization, page sizes can be set statically between 4 KB and 2 MB or configured dynamically among multiple page sizes.