On 06/20/2011 08:13 PM, Jan Kiszka wrote:
> A watchdog has the advantage that is also detects lockups.
>
> In fact you could implement the panic device via the existing
> watchdogs. Simply program the timer for the minimum interval and
> *don't* service the interrupt. This would work for non-virt setups as
> well as another way to issue a reset.
If you manage to bring down the other guest CPUs fast enough. Otherwise,
they may corrupt your crashdump before the host had a chance to collect
all pieces. Synchronous signaling to the hypervisor is a bit safer.
You could NMI-IPI them. But I agree a synchronous signal is better
(note it's not race-free itself).
--
error compiling committee.c: too many arguments to function
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