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.

Date of Patent:
Mar. 05, 2019

Filed:

Feb. 01, 2017
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

John T. Hollaway, Jr., Austin, TX (US);

Charles F. Marino, Round Rock, TX (US);

Michael S. Siegel, Raleigh, NC (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/07 (2006.01); G06F 12/0811 (2016.01);
U.S. Cl.
CPC ...
G06F 11/0778 (2013.01); G06F 11/0724 (2013.01); G06F 11/0751 (2013.01); G06F 12/0811 (2013.01); G06F 2212/60 (2013.01); G06F 2212/62 (2013.01);
Abstract

A coherency error detection and reporting mechanism monitors for coherency errors in a processor and between processors. When a requestor broadcasts a memory address in a command and a coherency error is detected, information regarding the command that caused the coherency error is logged, and the coherency error is reported a system error handler. The information logged for the coherency error may include the address of the coherency error, the requestor, the command, the response to the command, the scope of the coherency error, the error type, etc. Logging information relating to the coherency error provides more information to a person analyzing the processor for failures to more easily track down the cause of coherency errors.


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