Invention Grant
- Patent Title: Correctable error filtering for input/output subsystem
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Application No.: US15167601Application Date: 2016-05-27
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Publication No.: US10078543B2Publication Date: 2018-09-18
- Inventor: John E. Watkins , Joseph R. Wright , John R. Feehrer
- Applicant: Oracle International Corporation
- Applicant Address: US CA Redwood City
- Assignee: Oracle International Corporation
- Current Assignee: Oracle International Corporation
- Current Assignee Address: US CA Redwood City
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Agent Robert C. Kowert
- Main IPC: G06F11/00
- IPC: G06F11/00 ; G06F11/07

Abstract:
A switched fabric hierarchy (e.g., a PCIe hierarchy) may utilize hardware, firmware, and/or software for filtering duplicative or otherwise undesirable correctable error messages from reaching a root complex. An operating system of the root complex may detect a persistent stream or storm of correctable errors from a particular endpoint and activate filtering of correctable errors from that endpoint. A filtering device may receive filtering commands and parameters from the operating system, implement the filtering, and monitor further correctable errors from the offending device. While an offending device is being filtered, correctable error messages from the offending device may be masked from the operating system, while correctable error messages from other devices in the switched fabric hierarchy may be transmitted. At such time as the filtering device may detect that conditions for ending filtering of a device are met, the filtering device may cease filtering of the offending device and return monitoring responsibilities to the operating system.
Public/Granted literature
- US20170344419A1 Correctable Error Filtering for Input/Output Subsystem Public/Granted day:2017-11-30
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