Paul Mackerras wrote:
5. AFAICS userland will get an unplug notification for the device, but nothing to indicate that is due to an EEH slot isolation event. I think userland should be told about EEH events.
Currently there is a way for userland to determine if a hotplug event they receive is due to an EEH slot isolation event. It's not very pretty and requires the rtas_errd daemon to be running.
The RTAS event generated from the EEH event is logged to /var/log/platform by rtas_errd. Userland scripts would have to search the file for a recent EEH event matching their device to make this determination. This isn't as nice as a direct notification but is what we have at this point.
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