linux-kernel - Re: [PATCH] PCI: ACPI: Fix ThunderX PEM initialization

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Date:   Wed, 22 Mar 2017 12:25:39 -0400
From:   Jon Masters <jcm@...masters.org>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     David Daney <ddaney@...iumnetworks.com>,
        Tomasz Nowicki <tn@...ihalf.com>,
        David Daney <ddaney.cavm@...il.com>,
        Vadim Lomovtsev <Vadim.Lomovtsev@...iumnetworks.com>,
        David.Daney@...ium.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        stemerkhanov@...IUMNETWORKS.onmicrosoft.com, bhelgaas@...gle.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] PCI: ACPI: Fix ThunderX PEM initialization

On 03/22/2017 10:48 AM, Bjorn Helgaas wrote:
> On Wed, Mar 22, 2017 at 10:28:27AM -0400, Jon Masters wrote:
>> On 03/21/2017 10:56 AM, David Daney wrote:
> 
>>> Yes.  After all this back and forth, Cavium has decided to deploy
>>> firmware with "CAVxxx" as _HID.
>>
>> Great. How about a stable backport for Greg K-H? I want to make sure
>> that everyone running "upstream" has a chance of booting.
> 
> The first patch, fee4d813850c ("PCI: Use Cavium assigned hardware ID for
> ThunderX host controller"), has a stable tag already.

Thanks - I saw that after I mailed.

> The second, 1dc94a38af89 ("PCI: Add legacy firmware support for Cavium
> ThunderX host controller"), does not, but I can easily add it if needed.

I think that would be ideal. There is firmware out in the wild that
has neither identifier in it (for example, a bunch of folks in the
office bought platforms recently that don't boot upstream kernels).
My guys are used to just taking an upstream kernel and using that,
for development, and I have no intention of having the broader RH
org do any different from what they would do with an x86 box ;)

Jon.