System controller, identical-address-request-queuing preventing method, and information processing apparatus having identical-address-request-queuing preventing function
US7873789B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2007 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Jul 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/1642
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a system controller including a CPU-issued request queue having a circuit that processes plural requests having identical addresses not to be inputted to the CPU-issued request queue, a latest request other than a cache replace request is retained by an input-request retaining section. Consequently, even if an address of an issued request for cache replace request matches an address of a request retained by the CPU-issued request queue, the issued request for the cache replace request is not retried but is queued in the CPU-issued request queue when the address of the issued request for the cache replace request does not match the entire address retained by the input-request retaining section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.