When kernel is handling an interrupt, what would it do if hardware raised another interrupt request, simple drop it ? Or would that behavior be harmful ?
When kernel is handling an interrupt, what would it do if hardware raised another
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When kernel is handling an interrupt, what would it do if hardware raised another interrupt request, simple drop it ? Or would that behavior be harmful ?
The interrupt will stay there waiting unless it has a higher priority than the previous one, in which case it might pre-empt the previous one. Also if there are too many interrupts pending, the kernel will (atleast linux) revert to software queuing the interrupts.