Messages in this thread | | | Date | Mon, 17 Dec 2001 09:48:53 -0800 (PST) | From | Castor Fu <> | Subject | i386 machine_restart unsafe in interrupt context |
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I have a problem where systems fail to reboot on panic(). I've resolved it by changing smp_send_stop() to use an NMI (like the KDB patch does to manage communication).
The source of the problem is that the panic path has the following:
panic() machine_restart() machine_real_restart() smp_send_stop() smp_call_function()
and smp_call_function() is not safe in an interrupt context.
I imagine people might want to handle this differently, but I'd be happy to diffs if there's interest. It may be that there are enough cases like this that smp_call_function might want a version that uses an NMI. . .
-Castor Fu castor@3par.com
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