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:
Dec. 07, 2021
Filed:
Jul. 24, 2019
Applicant:
Arm Limited, Cambridge, GB;
Inventors:
Yasuo Ishii, Austin, TX (US);
Matthew Andrew Rafacz, Austin, TX (US);
Assignee:
Arm Limited, Cambridge, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/08 (2016.01); G06F 12/0815 (2016.01); G06F 12/0875 (2016.01); G06F 12/0808 (2016.01); G06F 9/38 (2018.01); G06F 12/1018 (2016.01);
U.S. Cl.
CPC ...
G06F 12/0815 (2013.01); G06F 9/3802 (2013.01); G06F 12/0808 (2013.01); G06F 12/0875 (2013.01); G06F 12/1018 (2013.01); G06F 2212/452 (2013.01); G06F 2212/657 (2013.01);
Abstract
A data processing apparatus is provided, which includes a cache to store operations produced by decoding instructions fetched from memory. The cache is indexed by virtual addresses of the instructions in the memory. Receiving circuitry receives an incoming invalidation request that references a physical address in the memory. Invalidation circuitry invalidates entries in the cache where the virtual address corresponds with the physical address. Coherency is thereby achieved when using a cache that is indexed using virtual addresses.