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:
Oct. 03, 1995
Filed:
Jul. 28, 1992
Raymond J Eberhard, Endicott, NY (US);
Douglas J Goodin, Berkshire, NY (US);
Alfred T Rundle, Jr, Endwell, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An address translation mechanism that allows for the creation, use, and purging of Translation Lookaside Buffer (TLB) entries associated to a unique task (virtual machine or guest). This association between guest and TLB entry allows for reuse of guest TLB entries (sets) in a multitasking system, quick purging of TLB entries during transition between address translation states, and quick restoration of control program TLB entries. The address translation mechanism as described herein must contain, at a minimum, a translation lookaside buffer; each entry must contain, at least: a absolute address field, a virtual address field and a translation mode indicator (TMI); a guest TMI table having entries containing a unique identifier to a guest and an associated TMI value; and a TMI register that holds the currently valid TMI.