Distribution of injected data among caches of a data processing system
US11561901B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2021 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Aug 12, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/1021
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system includes a plurality of processor cores each supported by a respective one of a plurality of vertical cache hierarchies. Based on receiving on a system fabric a cache injection request requesting injection of a data into a cache line identified by a target real address, the data is written into a cache in a first vertical cache hierarchy among the plurality of vertical cache hierarchies. Based on a value in a field of the cache injection request, a distribute field is set in a directory entry of the first vertical cache hierarchy. Upon eviction of the cache line the first vertical cache hierarchy, a determination is made whether the distribute field is set. Based on determining the distribute field is set, a lateral castout of the cache line from the first vertical cache hierarchy to a second vertical cache hierarchy is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.