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:
Jun. 14, 2022

Filed:

Jan. 13, 2021
Applicant:

Dell Products L.p., Round Rock, TX (US);

Inventors:

Ching-Lung Chao, Austin, TX (US);

Shih-Hao Wang, New Taipei, TW;

Zhengyu Yang, Fremont, CA (US);

Assignee:

Dell Products L.P., Round Rock, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/10 (2006.01); G06F 11/07 (2006.01); G11C 29/52 (2006.01); G06F 9/4401 (2018.01); G06F 13/24 (2006.01);
U.S. Cl.
CPC ...
G06F 11/106 (2013.01); G06F 9/4401 (2013.01); G06F 11/0772 (2013.01); G06F 13/24 (2013.01); G11C 29/52 (2013.01);
Abstract

A memory scrubbing system includes a persistent memory device coupled to an operating system (OS) and a Basic Input/Output System (BIOS). During a boot process and prior to loading the OS, the BIOS retrieves a known memory location list that identifies known memory locations of uncorrectable errors in the persistent memory device and performs a partial memory scrubbing operation on the known memory locations. The BIOS adds any known memory locations that maintain an uncorrectable error to a memory scrub error list. The BIOS then initiates a full memory scrubbing operation on the persistent memory device, cause the OS to load and enter a runtime environment while the full memory scrubbing operation is being performed, and provides the memory scrub error list to the OS.


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