Hi all, I have the following doubts regarding interrupts: 1. If two devices are sharing interrupts then will the priority of their interrupts be same? In other words, if two devices are sharing one interrupt line and one interrupt handler is getting executed, if in that time the other device generates an interrupt, then by any chance can the interrupt handler be preempted? 2. If the interrupt handler is not going to get preempted (in the above point), then what will be the status of the interrupt generated from the other device? Will it be lost or will it be flagged as pending and will be processed later? Also if say the interrupt handler currently getting executed is too long and during its execution time more than one interrupts from other device(s) can be generated then what will be the case? 3. What do we actually mean by interrupt dropping? LDD says it can result into data loss or hang. What will be its implications on a shared interrupt line? I mean, if in a shared irq, interrupt dropping has happened for a particular device then will it affect the other device(s) sharing that irq? Regards, Kaustav Majumdar -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
