search for: do_nmi_crash

...s safe from a security point of view. * Swap the NMI trap handlers. The crashing pcpu gets the nop handler, to prevent it getting stuck in an NMI context, causing a hang instead of crash. The non-crashing pcpus all get the nmi_crash handler which is designed never to return. do_nmi_crash() will: * Save the crash notes and shut the pcpu down. There is now an extra per-cpu variable to prevent us from executing this multiple times. In the case where we reenter midway through, attempt the whole operation again in preference to not completing it in the first place....