Messages in this thread | | | Date | Mon, 18 Jun 2007 16:54:34 -0700 | From | "Siddha, Suresh B" <> | Subject | Re: Device hang when offlining a CPU due to IRQ misrouting |
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On Mon, Jun 18, 2007 at 03:38:20PM -0700, Darrick J. Wong wrote: > On Thu, Jun 07, 2007 at 05:57:26PM -0700, Siddha, Suresh B wrote: > > > As you have the failing system, you need to do more detective work and > > help me out. Can you try this debug patch and send across the dmesg after the > > bug happens and also can you try different compiler to see if something > > changes.. > > Hrm, I just updated to -rc5. Interrupts being handled by the IOAPIC > don't suffer from this problem, but MSI interrupts are still affected. > I added a few printks to the kernel to figure out what IRQ affinity > masks were being passed around and saw this: > > [ 256.298773] Breaking affinity for irq 4341 > [ 256.298774] irq=4341 affinity=2 mask=d > <call to set_affinity> > [ 256.298787] irq=4341 affinity=d > <ethernet on irq 4341 stops working>
And just to make sure, at this point, your MSI irq 4341 affinity (/proc/irq/4341/smp_affinity) still points to '2'?
> I'll keep digging, but at least it appears that the problem has been > shrunk down to something the MSI code.
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