[Skiboot] [PATCH v2 3/3] hw/bt: Do not disable ipmi message retry during OPAL boot

Vasant Hegde hegdevasant at linux.vnet.ibm.com
Tue Feb 26 03:37:18 AEDT 2019

On 02/22/2019 06:05 AM, Andrew Jeffery wrote:
> On Fri, 22 Feb 2019, at 02:37, Vasant Hegde wrote:
>> Lets not disable IPMI message retry during OPAL boot.
> What bug did we encounter? I feel like you could expand a bit more here
> on why, though I am lacking a lot of context.

Sure. I was trying to fix the possible kernel hard lockup issues.

Currently OPAL doesn't know whether BMC is functioning or not.
If BMC is down and we keep on retrying sending message to BMC, we
will hit hardlockup issue in kernel.

So for now, I have added option to disable message retry in synchronous. On long run
we should get rid of synchronous.

Now this fix is not required in boot path. So I decided to get rid of this check 
in boot

Hope this clarifies.


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