Messages in this thread | | | Date | Fri, 27 Aug 2004 23:17:47 -0700 | From | "Martin J. Bligh" <> | Subject | Re: [RFC][PATCH] fix target_cpus() for summit subarch |
| |
--john stultz <johnstul@us.ibm.com> wrote (on Friday, August 27, 2004 17:24:48 -0700):
> I've been hunting down a bug affecting IBM x440/x445 systems where the > floppy driver would get spurious interrupts and would not initialize > properly. > > After digging James Cleverdon pointed out that target_cpus() is routing > the interrupts to the clustered apic broadcast mask. This was causing > multiple interrupts to show up, breaking the floppy init code. > > This one-liner fix simply routes interrupts to the first cpu to resolve > this issue.
I'd say that means your hardware is horribly broken ... but I guess this might be a suitable workaround given we're going to reprogram them all later.
So ... do all your interrupts end up on the first cpu now, or does irqbalance take care of it?
M.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |