发明授权
- 专利标题: System and method for storing cache location information for cache entry transfer
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申请号: US17181879申请日: 2021-02-22
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公开(公告)号: US12026099B2公开(公告)日: 2024-07-02
- 发明人: Paul James Moyer
- 申请人: ADVANCED MICRO DEVICES, INC.
- 申请人地址: US CA Santa Clara
- 专利权人: Advanced Micro Devices, Inc.
- 当前专利权人: Advanced Micro Devices, Inc.
- 当前专利权人地址: US CA Santa Clara
- 主分类号: G06F12/0895
- IPC分类号: G06F12/0895 ; G06F12/0804 ; G06F12/0815 ; G06F12/0866 ; G06F12/0897
摘要:
A cache stores, along with data that is being transferred from a higher level cache to a lower level cache, information indicating the higher level cache location from which the data was transferred. Upon receiving a request for data that is stored at the location in the higher level cache, a cache controller stores the higher level cache location information in a status tag of the data. The cache controller then transfers the data with the status tag indicating the higher level cache location to a lower level cache. When the data is subsequently updated or evicted from the lower level cache, the cache controller reads the status tag location information and transfers the data back to the location in the higher level cache from which it was originally transferred.
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