[Skiboot] [PATCH] [v3] Fast reboot for P8

Stewart Smith stewart at linux.vnet.ibm.com
Wed Sep 28 17:05:45 AEST 2016

Shilpasri G Bhat <shilpa.bhat at linux.vnet.ibm.com> writes:
> On 09/28/2016 10:24 AM, Stewart Smith wrote:
>>>> We could reset the OCCs on fast reboot, as there is a PRD command to
>>>> >> disable them.. although nobody should *ever* use them....
>>> >
>>> > We could ... should we ?
>> Probably? I may have to think about it a bit more.
> Resetting OCC will put the system to Psafe frequency till it comes back and we
> will need to wait till all the OCCs are up before we set all the cores to
> nominal frequency. This will just increase the reboot time.

There is that....

Any reason we couldn't hotplug into Linux the data from OCC? We could
improve IPL time that way too (OCC load+start time is fairly significant chunk)

Stewart Smith
OPAL Architect, IBM.

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