linux-kernel - Re: [PATCH 0/6] PCI: MMCONFIG clean up

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Date:	Tue, 03 Feb 2015 08:42:01 +0100
From:	Tomasz Nowicki <tomasz.nowicki@...aro.org>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
CC:	catalin.marinas@....com, will.deacon@....com,
	lorenzo.pieralisi@....com, wangyijing@...wei.com, arnd@...db.de,
	hanjun.guo@...aro.org, Liviu.Dudau@....com, tglx@...utronix.de,
	mingo@...hat.com, hpa@...or.com, rjw@...ysocki.net,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	x86@...nel.org, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org, linaro-acpi@...ts.linaro.org
Subject: Re: [PATCH 0/6] PCI: MMCONFIG clean up

On 02.02.2015 21:42, Bjorn Helgaas wrote:
> On Wed, Nov 19, 2014 at 05:04:45PM +0100, Tomasz Nowicki wrote:
>> MMCFG ACPI table has no arch dependencies so it can be used across all
>> architectures. Currently MMCONFIG related code resides in arch/x86 directories.
>> This patch set is goint to isolate non-architecure specific code and make
>> it accessible from drivers/pci/ directory.
>>
>> Tomasz Nowicki (6):
>>    x86, acpi, pci: Reorder logic of pci_mmconfig_insert() function
>>    x86, acpi, pci: Move arch-agnostic MMCFG code out of arch/x86/
>>      directory
>>    x86, acpi, pci: Move PCI config space accessors.
>>    x86, acpi, pci: mmconfig_{32,64}.c code refactoring - remove code
>>      duplication.
>>    x86, acpi, pci: mmconfig_64.c becomes default implementation for arch
>>      agnostic low-level direct PCI config space accessors via MMCONFIG.
>>    pci, acpi: Share ACPI PCI config space accessors.
>
> Hi Tomasz,
>
> I'm just checking to make sure we aren't deadlocked here, with me waiting
> for you and you waiting for me.  I gave you some comments about
> abbreviations (MCFG/MMCFG/MMCONFIG/ECAM), weak functions, code placement
> (drivers/acpi vs. drivers/pci), and the mmio_config_*() naming, so I've
> been waiting to continue those discussions.  But maybe you're waiting for
> me, too?
>
> I think this sort of cleanup is a great idea and I hope we can make some
> progress on it.  If it's easier to do it in small pieces, e.g., starting
> out by moving code and renaming things with no functional changes, that
> would be great with me.

Hi Bjorn,

It is not deadlock, it is rather me suffering with lack of time :)

I definitely want to make that cleanup happen and was about to start 
working on it again. Thanks for remanding me, patches/comments should 
come up soon.

Regards,
Tomasz
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