Selection of a domain of a configuration access
US8261128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2010 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Sep 10, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1423
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system includes an input/output (I/O) host bridge to which at least one I/O adapter is coupled by an I/O link. In a register of the I/O host bridge, a configuration partitionable endpoint (PE) field is set to identify a PE to be used for an I/O configuration operation. Thereafter, the host bridge initiates the I/O configuration operation on the I/O link and determines if an error occurred for the I/O configuration operation. In response to a determination that an error occurred for the I/O configuration operation, an error state is set in the I/O host bridge only for the PE indicated in the configuration PE field of the register in the I/O host bridge, wherein I/O configuration errors are isolated to particular PEs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.