[PATCH] (2.6) improvements to os-term on panic

[Mike Strosaker]

Hollis Blanchard wrote:
>
> Hey Mike, how would I access the platform error log after that? I
> recently had a problem where the panic message never appeared on
> console, but I guess the "ibm,os-term" call caused the partition to
> reboot instantly (i.e. no waiting for 180 seconds or whatever). So the
> result was boot kernel -> instant reboot, without any error message.
>

The behavior after an ibm,os-term RTAS call is platform dependent.
The panic message is printed to the op panel on HMC connected systems.
Systems equipped with a service processor will call home the error if
the SP is properly configured.  The message may also be stored to NVRAM,
but I'm not certain what platforms do that, or where it may be stored.
I'm looking into that now.

Since your partition rebooted immediately, I suspect that the RTAS call
returned a "hardware busy, try again" condition, which my initial patch
failed to handle.  The patch that was attached to the initial message in
this thread should prevent that behavior from happening again.

Thanks,
Mike

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