Messages in this thread | | | Date | Wed, 04 Sep 2002 17:05:58 +0200 | From | Manfred Spraul <> | Subject | Re: lockup on Athlon systems, kernel race condition? |
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Terence Ripperda wrote: > > I don't have things caught in the debugger currently, but I did check the registers at the time. bit 9 of eflags was enabled on both cpus. > That rules out a disabled interrupt flag.
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].
-- Manfred
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