Re: [RFC][PATCH] fix target_cpus() for summit subarch

[john stultz]

On Fri, 2004-08-27 at 23:17, Martin J. Bligh wrote:
> --john stultz <johnstul@xxxxxxxxxx> 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.

Ok, then my patch probably isn't correct. Let me grab James and we'll
sit down and work this out later today.

thanks
-john


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