linux-kernel - Re: [PATCH v2 4/4] pci: Add support for creating a generic host

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Message-ID: <1393723559.12039.3.camel@pasglop>
Date:	Sun, 02 Mar 2014 12:25:59 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Liviu Dudau <Liviu.Dudau@....com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	linux-pci <linux-pci@...r.kernel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Will Deacon <Will.Deacon@....com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	LAKML <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 4/4] pci: Add support for creating a generic
 host_bridge from device tree

On Sun, 2014-03-02 at 12:23 +1100, Benjamin Herrenschmidt wrote:
> On Fri, 2014-02-28 at 09:55 +0000, Liviu Dudau wrote:
> > The next phase will be to see how much of the pci_controller structure can move
> > into the generic code and reduce its size. I do suffer from not having a PowerPC
> > platform where I can test the changes, but I can produce some compiled code that
> > someone can test.
> 
> Ok, we can probably start from there. I think the right approach is to actually
> kill pci_controller by merging it with the new host bridge structure.
> 
> Most of the resources are there now, we need to move the rest. We probably will
> need a way to attach platform specific bits to it though, and a few hooks to
> populate them but that isn't terribly hard.

Oh and regarding testing...

qemu should help. For qemu ppc64, try -M pseries, that's fairly well
maintained since it's the basis for all our new KVM based products,
and there's still some (hopefully) working 32-bit mac stuff in there.

With pseries, I would expect that you can install fedora, debian or
ubuntu (in fact you can also install SLES11/RHEL6 I believe).

Cheers,
Ben.


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