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SubjectRe: smp_call_function_single lockups
On Wed, Apr 01, 2015 at 02:43:36PM +0200, Ingo Molnar wrote:

<snip>
> Have you already tested whether the hang goes away if you remove
> irq-affinity fiddling daemons from the system? Do you have irqbalance
> installed or similar mechanisms?
>
> Thanks,
>
> Ingo
>

Even with irqbalance removed from the L0/L1 machines the hang still occurs.
Using the debug patch as described here:
https://lkml.org/lkml/2015/4/1/338

This results in no 'apic: vector* or 'ack_APIC*' messages being displayed.

--chris


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