Re: [GIT PATCH] more Driver core patches for 2.6.19

[Jan Engelhardt <jengelh@linux01.gwdg.de>]

>You can simply mask it, have it handled by userspace and re-enable it
>when that's done. Though say hello to horrible interrupt latencies and
>hope you aren't sharing it with anything critical...

For the sharing case, some sort of softirq should be created. That is, when a
hard interrupt is generated and the irq handler is executed, set a flag that at
some other point in time, the irq is delivered to userspace. Like you do with
signals in userspace:

 void sighandler(int s) {
     exit_main_loop_soon = 1;
 }

something similar could be done in kernelspace without interrupting important
devices/irq_handlers sharing the same IRQ. 


	-`J'
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