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:
Sep. 24, 2013
Filed:
Jun. 27, 2012
Clinton Thomas Glover, Austin, TX (US);
Colin Eddy, Austin, TX (US);
Rodney E. Hooker, Austin, TX (US);
Albert J. Loper, Austin, TX (US);
Clinton Thomas Glover, Austin, TX (US);
Colin Eddy, Austin, TX (US);
Rodney E. Hooker, Austin, TX (US);
Albert J. Loper, Austin, TX (US);
VIA Technologies, Inc., New Taipei, TW;
Abstract
A memory subsystem in a microprocessor includes a first-level cache, a second-level cache, and a prefetch cache configured to speculatively prefetch cache lines from a memory external to the microprocessor. The second-level cache and the prefetch cache are configured to allow the same cache line to be simultaneously present in both. If a request by the first-level cache for a cache line hits in both the second-level cache and in the prefetch cache, the prefetch cache invalidates its copy of the cache line and the second-level cache provides the cache line to the first-level cache.