Generational physical address proxies
US11860794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2022 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Aug 3, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/151
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Each PIPT L2 cache entry is uniquely identified by a set index and a way and holds a generational identifier (GENID). The L2 detects a miss of a physical memory line address (PMLA). An L2 set index is obtained from the PMLA. The L2 picks a way for replacement, increments the GENID held in the entry in the picked way of the selected set, and forms a physical address proxy (PAP) for the PMLA with the obtained set index and the picked way. The PAP uniquely identifies the picked L2 entry. The L2 forms a generational PAP (GPAP) for the PMLA with the PAP and the incremented GENID. A load/store unit makes available the GPAP as a proxy of the PMLA for comparisons with GPAPs of other PMLAs, rather than making comparisons of the PMLA itself with the other PMLAs, to determine whether the PMLA matches the other PMLAs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.