Messages in this thread | | | Date | Wed, 23 Sep 2009 09:32:53 +0200 | From | Ingo Molnar <> | Subject | Re: perf sched record hangs machine |
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* Peter Zijlstra <peterz@infradead.org> wrote:
> .size default_send_IPI_self, .-default_send_IPI_self > > Which seems to suggest that cmove is in __prepare_ICR, but I'm not > sure how that can cause a page-fault, as that function is rather > pointer-less. > > Did it maybe delay evaluating apic->dest_logical that late, it appear > to be the first usage of that argument? > > Ingo, any ideas?
Yeah, the problem is:
[ 0.042445] Local APIC not detected. Using dummy APIC emulation.
we shouldnt be trying to program the lapic in that case - all ops should be a NOP, including send-ipi-self. Cyrill?
Ingo
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