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. 24, 2009
Filed:
Jan. 10, 2008
Beth Ann Peterson, Tucson, AZ (US);
Todd C. Sorenson, Tucson, AZ (US);
Matthew Joseph Kalos, Tucson, AZ (US);
Ashwani Kumar, Tucson, AZ (US);
James Lamar Hood, Tucson, AZ (US);
Beth Ann Peterson, Tucson, AZ (US);
Todd C. Sorenson, Tucson, AZ (US);
Matthew Joseph Kalos, Tucson, AZ (US);
Ashwani Kumar, Tucson, AZ (US);
James Lamar Hood, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method is provided to protect against ill-behaved microcode by balancing between an actual occurrence of a hardware problem and a microcode bug setting a flag appearing as a hardware problem. In this method, the error recovery is performed only on a single piece of hardware and no further error recovery action is taken on other pieces of similar hardware. The approach addresses the problem by treating a hit on one card as a hardware problem, but as a bug on subsequent cards. The invention keeps track of whether or not the same event has occurred on the same type of hardware so not to take action on more than one instance of the hardware. Subsequent hits on another instance of the hardware will not trigger the hardware related recovery on additional hardware.