[Skiboot] [PATCH] phb4: Avoid MMIO load freeze escalation on every chip

Vasant Hegde hegdevasant at linux.vnet.ibm.com
Thu Apr 1 02:20:41 AEDT 2021

On 2/9/21 2:14 PM, Mahesh Salgaonkar wrote:
> The commit f397cc30bdf8 ("phb4: Only escalate freezes on MMIO load where
> necessary") introduced a change to restrict escalation to the chips that
> actually need it. However it missed one case which still causes the
> escalation on every chip. This affects EEH recovery to cause full
> PHB reset on some chips which is not necessary. This patch fixes that.
> Also, add a check for p9 chip in phb4_escalation_required() function.

Thanks! Merged to master as d51eb6f9.


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