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Message-ID: <20250711210510.GA2306333@bhelgaas>
Date: Fri, 11 Jul 2025 16:05:10 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Timothy Pearson <tpearson@...torengineering.com>
Cc: Krishna Kumar <krishnak@...ux.ibm.com>,
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-pci <linux-pci@...r.kernel.org>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	christophe leroy <christophe.leroy@...roup.eu>,
	Naveen N Rao <naveen@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Shawn Anastasio <sanastasio@...torengineering.com>,
	Lukas Wunner <lukas@...ner.de>
Subject: Re: [PATCH v2 6/6] pci/hotplug/pnv_php: Enable third attention
 indicator

On Fri, Jul 11, 2025 at 01:18:07PM -0500, Timothy Pearson wrote:
> ----- Original Message -----
> > From: "Krishna Kumar" <krishnak@...ux.ibm.com>
> > To: "Bjorn Helgaas" <helgaas@...nel.org>, "Timothy Pearson" <tpearson@...torengineering.com>
> > Cc: "linuxppc-dev" <linuxppc-dev@...ts.ozlabs.org>, "linux-kernel" <linux-kernel@...r.kernel.org>, "linux-pci"
> > <linux-pci@...r.kernel.org>, "Madhavan Srinivasan" <maddy@...ux.ibm.com>, "Michael Ellerman" <mpe@...erman.id.au>,
> > "christophe leroy" <christophe.leroy@...roup.eu>, "Naveen N Rao" <naveen@...nel.org>, "Bjorn Helgaas"
> > <bhelgaas@...gle.com>, "Shawn Anastasio" <sanastasio@...torengineering.com>, "Lukas Wunner" <lukas@...ner.de>
> > Sent: Monday, July 7, 2025 3:01:00 AM
> > Subject: Re: [PATCH v2 6/6] pci/hotplug/pnv_php: Enable third attention indicator
> 
> > Thanks all for the review and Thanks a bunch to Timothy for fixing the PE Freeze
> > issue. The hotplug issues are like you fix N issue and N+1 th issue will come
> > with new HW.
> > 
> > We had a meeting of around 1.5 -2.0 hr with demo, code review and log review and
> > we decided to let these fixes go ahead. I am consolidating what we discussed -
> > 
> > 
> > 1. Let these fixes go ahead as it solves wider and much needed customer issue
> > and its urgently needed for time being. We have verified in live demo that
> > nothing is broken from legacy flow and
> > 
> > PE/PHB freeze, race condition, hung, oops etc has been solved correctly.
> > Basically it fixes below issues -
> > 
> > root-port(phb) -> switch(having4 port)--> 2 nvme devices
> > 
> > 1st case - only removal of EP-nvme device (surprise hotplug disables msi at root
> > port), soft removal may work
> > 2nd caseĀ  - If we remove switch itself (surprise hotplug disable msi at root
> > port) .
> 
> Just a quick follow up to see if anything else is needed from my end
> before this merge can occur?

I was waiting for a v3 to fix at least these:

  - Subject line style matching history in drivers/pci/hotplug/ (use
    "git log --oneline" to see it)

  - Broken subject line wrapping into commit log

  - Spelling fixes

  - Comment reformat to match prevailing style

  - Note attention indicator behavior changes in commit log

  - Some minor refactoring

Basically everything mentioned in the responses to the original
posting.  Or was there a v3 that I missed?

Bjorn

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