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:
Feb. 01, 2005
Filed:
Apr. 30, 2001
Dejan S. Miloiicic, Palo Alto, CA (US);
Thomas Wylegala, Santa Clara, CA (US);
Fong Pong, Mountain View, CA (US);
Stephen Hoyle, Palo Alto, CA (US);
Lance W. Russell, Hollister, CA (US);
LU Xu, San Jose, CA (US);
Alberto J. Munoz, Los Altos, CA (US);
Dejan S. Miloiicic, Palo Alto, CA (US);
Thomas Wylegala, Santa Clara, CA (US);
Fong Pong, Mountain View, CA (US);
Stephen Hoyle, Palo Alto, CA (US);
Lance W. Russell, Hollister, CA (US);
Lu Xu, San Jose, CA (US);
Alberto J. Munoz, Los Altos, CA (US);
Hewlett-Packard Development Company, Houston, TX (US);
Abstract
The present invention is a system and method for recovering from memory failures in computer systems. The method of the present invention includes the steps of: identifying a predetermined instruction sequence; monitoring for memory access errors in response to the request; logging a memory access error in an error logging register; polling the register for any logged memory access error during execution of the instruction sequence; and raising exceptions, if the memory access error is logged. Within the system of the present invention, memory access errors are stored in an error logging register, machine check abort handles are masked, and memory controllers are under full control of the software so that memory access errors can be intercepted and responded to without necessitating a system reboot or application restart. The present invention is particularly applicable to O/S code which can not otherwise recover from memory errors except by rebooting.