** Description changed: In all kernels since 2.6.39, the "irqfixup" and "irqpoll" options are no longer taking effect. I have several machines that need to boot with one of these options, and I see reports of this regression from multiple other users. The interrupts now generate the same errors seen without these kernel options, e.g.: irq 19: nobody cared (try booting with the "irqpoll" option) even though irqpoll, or irqfixup, is used. The Linux irq code was reworked during the 2.6.39 cycle. I have gone through the patches, and this is the commit where the regression arrives: - commit d05c65fff0ef672be75429266751f0e015b54d94 + commit d05c65fff0 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=d05c65fff0ef672be75429266751f0e015b54d94 I have a patch that fixes most of my machones, and the maintainer has accepted it: - https://lkml.org/lkml/2011/11/2/260 + https://lkml.org/lkml/2011/11/2/260 - I wish I could say that's the end of it, but one of my machines still - has a bad irq uncaught, even with my patch, in any kernel from .39 on. - .38 handles it. So I may have to dig some more. Any testing of the current patch would be great. + + I wish I could say that's the end of it, but I have found configurations + on my machines where a bad irq still goes uncaught, even with my patch. + + Focusing on those cases, it comes down to this patch: + + commit fa27271bc , genirq: Fixup poll handling + + http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=fa27271bc8d230355c1f24ddea103824fdc12de6 + + This patch changes the approach in multiple ways, and I haven't figured + out where it drops the ball. I've toyed around with the changes, but + have not produced a clear fix. I'll keep trying, and will be in touch + with the maintainer again.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/855199 Title: "irqfixup" and "irqpoll" broken since 2.6.39 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/855199/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
