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:
May. 15, 2012
Filed:
May. 15, 2009
Sanjiv Kapil, Cupertino, CA (US);
Ricky C. Hetherington, Pleasanton, CA (US);
Sanjiv Kapil, Cupertino, CA (US);
Ricky C. Hetherington, Pleasanton, CA (US);
Oracle America, Inc., Redwood City, CA (US);
Abstract
System and method for using flash memory in a memory hierarchy. A computer system includes a processor coupled to a memory hierarchy via a memory controller. The memory hierarchy includes a cache memory, a first memory region of random access memory coupled to the memory controller via a first buffer, and an auxiliary memory region of flash memory coupled to the memory controller via a flash controller. The first buffer and the flash controller are coupled to the memory controller via a single interface. The memory controller receives a request to access a particular page in the first memory region. The processor detects a page fault corresponding to the request and in response, invalidates cache lines in the cache memory that correspond to the particular page, flushes the invalid cache lines, and swaps a page from the auxiliary memory region to the first memory region.