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:
Jul. 26, 2022
Filed:
Mar. 21, 2019
Arm Limited, Cambridge, GB;
Ian Michael Caulfield, Cambridge, GB;
Peter Richard Greenhalgh, Cambridge, GB;
Frederic Claude Marie Piry, Cagnes sur Mer, FR;
Albin Pierrick Tonnerre, Nice, FR;
Arm Limited, Cambridge, GB;
Abstract
An apparatus and method of operating a data processing apparatus are disclosed. The apparatus comprises data processing circuitry to perform data processing operations in response to a sequence of instructions, wherein the data processing circuitry is capable of performing speculative execution of at least some of the sequence of instructions. A cache structure comprising entries stores temporary copies of data items which are subjected to the data processing operations and speculative execution tracking circuitry monitors correctness of the speculative execution and responsive to indication of incorrect speculative execution to cause entries in the cache structure allocated by the incorrect speculative execution to be evicted from the cache structure.