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:
Jan. 31, 2012
Filed:
Feb. 08, 2008
Timothy H. Heil, Rochester, MN (US);
James A. Rose, Rochester, MN (US);
Andrew H. Wottreng, Rochester, MN (US);
Timothy H. Heil, Rochester, MN (US);
James A. Rose, Rochester, MN (US);
Andrew H. Wottreng, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Embodiments of the invention provide methods and apparatus for selectively bypassing cache levels when processing non-reusable transient data in a cache coherent system. To selectively bypass cache levels a page table entry (PTE) mechanism may be employed. To limit the number of PTE bits, the PTE may have a 2-bit 'bypass type' field among other attribute bits that index which bits of a Special Purpose Register (SPR) identify the cache levels to be bypassed.