Hi Hans, On 13/11/14 09:44, Hans de Goede wrote: > Hi Tejun, > > Since this patch mentioned sunxi it gained my attention, but as it touches > ahci core code I was expecting you to pick it up, which seems to not have > happened, so hence this resend. > > FWIW I've tried to reproduce the problem, but it does not reproduce for me, > that does not mean it is not a real problem though. I'm afraid I'm to > unfamiliar with the ahci interrupt handling to say anything more sensible > about this. I can reproduce it about once every 5 boots or so. You can also notice that the interrupt rate is much higher with the threaded interrupt code, which is a sign that something is very fishy (the level interrupt is never masked...). > It looks like this is a 3.18 regression, so if this is a real issue, we > should probably get this patch in for 3.18 . I think the real fix should be to revert the whole threaded interrupt thing. Adding the IRQF_ONESHOT breaks some Intel platforms in a rather bad way in case of a shared interrupt (for gory details, see http://www.gossamer-threads.com/lists/linux/kernel/2043506). Tejun did prepare a set of patches to revert this, but I haven't seen it being pulled in yet. It would be good to get something into 3.18. Thanks, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
