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. 12, 2020
Filed:
Nov. 21, 2017
International Business Machines Corporation, Armonk, NY (US);
Guy L. Guthrie, Austin, TX (US);
Jody B. Joyner, Austin, TX (US);
Ronald N. Kalla, Round Rock, TX (US);
Michael S. Siegel, Raleigh, NC (US);
Jeffrey A. Stuecheli, Austin, TX (US);
Charles D. Wait, Byron, MN (US);
Frederick J. Ziegler, Pine Island, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Reducing translation latency within a memory management unit (MMU) using external caching structures including requesting, by the MMU on a node, page table entry (PTE) data and coherent ownership of the PTE data from a page table in memory; receiving, by the MMU, the PTE data, a source flag, and an indication that the MMU has coherent ownership of the PTE data, wherein the source flag identifies a source location of the PTE data; performing a lateral cast out to a local high-level cache on the node in response to determining that the source flag indicates that the source location of the PTE data is external to the node; and directing at least one subsequent request for the PTE data to the local high-level cache.