CACHE MANAGEMENT

A method, a computer system, and a computer program product to perform a directory lookup in a first level cache for requested cache line data. A first processor core can detect that the requested cache line data is not found in a plurality of sets of data in the first level cache and detect that ex...

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Bibliographic Details
Main Authors JACOBI, CHRISTIAN, Recktenwald, Martin, Shapira, Yossi, Tsai, Aaron, Berger, Deanna P.D
Format Patent
LanguageEnglish
Published 02.04.2020
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A method, a computer system, and a computer program product to perform a directory lookup in a first level cache for requested cache line data. A first processor core can detect that the requested cache line data is not found in a plurality of sets of data in the first level cache and detect that existing cache line data stored in a least recently used data set stored in the first level cache is in an exclusive state, wherein the existing cache line data stored in the least recently used data set is to be overwritten by the requested cache line data retrieved from a second level cache. Furthermore, the first processor core can send a request for the requested cache line data and a physical address of the least recently used data set to the second level cache and execute additional instructions based on the first level cache and data retrieved from the second level cache.
Bibliography:Application Number: US201916699883