On Tue, Jun 24, 2008 at 03:40:37AM +0400, Anton Vorontsov wrote:

IDE interrupt handler relies on the fact that, if necessary, hardirqs
will re-trigger on ISR exit. With fully preemtable IRQs this seems to be
not true, since if hardirq thread is currently running, and the same IRQ
raised again, then this IRQ will be simply lost.

Btw, I don't actually understand why interrupt "simply lost", IMO it
should not.. :-/ But this what I'm observing via bunch of printks in
the code flow. Maybe there is not so obvious race, which I can't see.

So, help needed. Either it is a proper fix, or it is a workaround for
another bug somewhere else.

-- 
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2