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. 09, 2013
Filed:
Apr. 07, 2011
Jay W. Carman, Austin, TX (US);
Marc A. Gollub, Round Rock, TX (US);
Anshuman Khandual, Austin, TX (US);
Jay W. Carman, Austin, TX (US);
Marc A. Gollub, Round Rock, TX (US);
Anshuman Khandual, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Mechanisms are provided in which firmware verifies he entire system's memory scrub coverage through some additional memory controller (MC) registers/attentions and builds up a processor runtime diagnostic (PRD) scrub coverage table during every scrub cycle. Firmware may go through the scrub coverage table rank-by-rank on a periodic basis to determine whether any ranks had not been covered by hardware scrubbing. Firmware may initiate a targeted scrub and diagnostic for all of the ranks that did not have adequate scrub coverage. If for some reason the system still has some memory ranks that have not been covered by the initial hardware scrub and the targeted scrub, then the firmware may perform some course of action for fault isolation.