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:
Jul. 16, 2024
Filed:
May. 09, 2023
Shanghai Zhaoxin Semiconductor Co., Ltd., Shanghai, CN;
SHANGHAI ZHAOXIN SEMICONDUCTOR CO., LTD., Shanghai, CN;
Abstract
A processor and a method for designating a demotion target to demote the demotion target from an in-core cache structure to an out-of-core cache structure is shown. In response to a cache data demotion instruction supported by an instruction set architecture, a first core of a processor operates a decoder to decode the cache data demotion instruction into microinstructions. According to the microinstructions, a demotion target designation request is transferred to a last-level cache (LLC) through a memory order buffer to drive the LLC to query an out-of-core cache table. According to the demotion target's cache status in the first core obtained from the out-of-core cache table, the LLC outputs a snoop request to the first core to snoop on the demotion target and demote the demotion target from the in-core cache structure of the first core to the LLC.