linux-kernel - Re: [PATCH v4 1/5] PCI: Add pci_bus_fixup

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Message-ID: <20151008091843.GA31644@red-moon>
Date:	Thu, 8 Oct 2015 10:18:43 +0100
From:	Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:	Matthew Minter <matt@...arand.com>
Cc:	Bjorn Helgaas <helgaas@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	devicetree@...r.kernel.org, Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Marc Zyngier <marc.zyngier@....com>, linux-pci@...r.kernel.org,
	David Daney <david.daney@...ium.com>,
	Will Deacon <will.deacon@....com>,
	David Daney <ddaney@...iumnetworks.com>,
	linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
	David Daney <ddaney.cavm@...il.com>,
	Kumar Gala <galak@...eaurora.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 1/5] PCI: Add pci_bus_fixup_irqs().

Hi Matthew,

On Thu, Oct 08, 2015 at 03:07:34AM +0100, Matthew Minter wrote:
> On Wednesday 07 October 2015 18:08:47 Bjorn Helgaas wrote:

[...]

> Yes, I had been working on this last year, and got a patchset that was tested 
> on arm, x86 (and amd64), and slightly tested on powerpc. However I was not 
> able to test other architectures as they were not available in the software 
> lab I work in but should in theory work on all arches the kernel runs on.
> 
> I can say that that patchset is being used by several projects out of tree 
> currently but unfortunately due to a shift in priorities in the lab I was 
> working for I lost access to the resources to develop and test the patch 
> easily.
> 
> I have done some additional work personally on it but so far have not got 
> anything that I am happy to submit for inclusion in tree. (due to a number of 
> issues in structure and  a complication relating to weak functions where 
> multiple variations of the same arch exist.
> 
> You can see in thread that is linked above 
> (http://lkml.kernel.org/r/1412222866-21068-1-git-send-email-matt@masarand.com)
> some feedback on the issues that need to be solved.
> 
> I also expect that the patchset needs to be pulled forward to a newer kernel 
> as I have been working in a frozen tree without rebasing to reduce test 
> complexity.
> 
> I would be happy to put some time this weekend if possible into reviewing the 
> state of this and seeing if I can at least put together a version running on a 
> recent kernel. I can also go over the issues again which were proving 
> problematic and see if any of them are easy to fix.
> 
> However I can only work on this in my own time for now and on my own boxes 
> (which are all x86 and amd64) so the amount I can do will be limited. 

I was not aware of your patchset but I am happy to see that code since it
is definitely the right approach and I am willing to help you test it on
arm with the HW I have (probably it will also help remove some code
from arm64 too), let me know when you have a branch ready to test and
if you need any help in rebasing the set.

Thanks,
Lorenzo
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