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The dasd interrupt handler needs to distinguish solicited from unsolicited interrupts, as unsolicited interrupts may require special handling (e.g. summary unit checks) and solicited interrupts require proper error recovery for the failed I/O request. The interrupt handler needs to check several bit fields in the interrupt response block (irb) to make this distinction. So far our check of the status control bits has not been specific enough, which may lead to a failed request getting just retried instead of the necessary error recovery. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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