On Tue, Jun 23, 2009 at 09:33:46AM +0900, Hidetoshi Seto wrote: > Robin Holt wrote: ... > Do you mean that the 2nd kernel should be able to handle MCA/INIT from its > boot up? I guess the word PROM is nearly equal to PAL/SAL firmware, if so > then I don't think there are good generic interface/procedure could be > useful here. Do you have any concrete idea? No concrete ideas. Just a really uneasy feeling whenever the INIT is disabled. On SGI's ia64 servers, when the INIT is first received, our PROM (PAL/SAL) records the processors state. This record remains for the next reset or for salinfo to transfer to disk. We can dump all the records in a format somewhat similar to the output in /var/log/salinfo/decoded. On more occasions than I could even begin to describe, those records have helped us determine what the processor was doing despite it even ignoring interrupts. This includes everything except when MCA/INIT handling is disabled or PMIs are being processed. If you could give this some consideration, I would appreciate it. I really don't have the time to dedicate to thinking all the way through and therefore will not stand in the way of any patch you propose. If I can be of help in any way, please let me know. Thanks, Robin
