From hegdevasant at linux.vnet.ibm.com  Thu Apr  1 02:20:41 2021
From: hegdevasant at linux.vnet.ibm.com (Vasant Hegde)
Date: Wed, 31 Mar 2021 20:50:41 +0530
Subject: [Skiboot-stable] [Skiboot] [PATCH] phb4: Avoid MMIO load freeze
 escalation on every chip
In-Reply-To: <161286024513.458471.9155640961870508161.stgit@jupiter>
References: <161286024513.458471.9155640961870508161.stgit@jupiter>
Message-ID: <ce3b069a-9d86-63c2-a608-1371850c9845@linux.vnet.ibm.com>

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.

-Vasant