Messages in this thread | | | From | Terence Ripperda <> | Date | Wed, 4 Sep 2002 11:17:43 -0500 | Subject | Re: lockup on Athlon systems, kernel race condition? |
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On Wed, Sep 04, 2002 at 05:05:58PM +0200, manfred@colorfullife.com wrote: > What was cpu1 doing? There are 3 loops in smp_call_function: > spin_lock(&call_lock), and 2 while loops with barrier() [first one for > IPI arrival, second one for synchroneous ipi's. TLB flush is sync].
it was spinning on the first barrier loop, waiting for verification of the IPI arrival:
/* Wait for response */ while (atomic_read(&data.started) != cpus) barrier();
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