linux-kernel - Re: [PATCH v2 6/6] pci/hotplug/pnv_php: Enable third attention indicator

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Message-ID: <493196553.1359869.1752615703480.JavaMail.zimbra@raptorengineeringinc.com>
Date: Tue, 15 Jul 2025 16:41:43 -0500 (CDT)
From: Timothy Pearson <tpearson@...torengineering.com>
To: Bjorn Helgaas <helgaas@...nel.org>
Cc: Timothy Pearson <tpearson@...torengineering.com>, 
	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

Apologies for that, I had meant to send v3 in and apparently it got dropped.  I believe I have addressed the comments in the v3 I just sent in.

Thank you!

----- Original Message -----
> 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>
> Sent: Friday, July 11, 2025 4:05:10 PM
> 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 case  - 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