Invention Publication
- Patent Title: Prediction Confirmation for Cache Subsystem
-
Application No.: US18438111Application Date: 2024-02-09
-
Publication No.: US20240176744A1Publication Date: 2024-05-30
- Inventor: Ronald P. Hall , Mary D. Brown , Balaji Kadambi , Mahesh K. Reddy
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Main IPC: G06F12/0862
- IPC: G06F12/0862

Abstract:
A cache subsystem is disclosed. The cache subsystem includes a cache configured to store information in cache lines arranged in a plurality of ways. A requestor circuit generates a request to access a particular cache line in the cache. A prediction circuit is configured to generate a prediction of which of the ways includes the particular cache line. A comparison circuit verifies the prediction by comparing a particular address tag associated with the particular cache line to a cache tag corresponding to a predicted one of the ways. Responsive to determining that the prediction was correct, a confirmation indication is stored indicating the correct prediction. For a subsequent request for the particular cache line, the cache is configured to forego a verification of the prediction that the particular cache line is included in the one of the ways based on the confirmation indication.
Information query
IPC分类: