System for restricted cache access during data transfers and method thereof
US7930484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2005 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | May 4, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0888
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Instructions involving a relatively significant data transfer or a particular type of data transfer via a cache result in the application of a restricted access policy to control access to one or more partitions of the cache so as to reduce or prevent the overwriting of data that is expected to be subsequently used by the cache or by a processor. A processor or other system component may assert a signal which is utilized to select between one or more access policies and the selected access policy then may be applied to control access to one or more ways of the cache during the data transfer operation associated with the instruction. The access policy typically represents an access restriction to particular cache partitions, such as a restriction to one or more particular cache ways or one or more particular cache lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.