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, 2018
Filed:
Oct. 30, 2015
Arm Limited, Cambridge, GB;
The Regents of the University of Michigan, Ann Arbor, MI (US);
Stephan Diestelhorst, Cambridge, GB;
Aasheesh Kolli, Ann Arbor, MI (US);
Ali Ghassan Saidi, Austin, TX (US);
Peter Chen, Ann Arbor, MI (US);
Thomas Friedrich Wenisch, Ann Arbor, MI (US);
ARM Limited, Cambridge, GB;
The Regents of the University of Michigan, Ann Arbor, MI (US);
Abstract
A data processing systemincluding non-volatile memorymanages the ordering of writes to the non-volatile memory and persist barrier instructions using a persist buffer storing persist buffer data. A write controller responds to the persist buffer data to prevent writing to the non-volatile memory for instructions following a given persist barrier instruction within a sequence of program instructions before the writes to the non-volatile memory which precede that given persist barrier instruction have at least been acknowledged as received by the memory system containing the non-volatile memory. In the case of a multi-core system, cache snooping mechanisms are used to pass persistency dependence data between cores such that strong persist atomicity may be tracked and managed between the cores.