Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address to resource

From	David Miller <davem@davemloft.net>
Newsgroups	linux.kernel
Subject	Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address to resource
Date	2016-05-04 06:20 +0200
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References	<rtaSu-1U4-21@gated-at.bofh.it> <ruRsm-dq-9@gated-at.bofh.it> <ruT17-1Cp-3@gated-at.bofh.it>
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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Wed, 04 May 2016 10:37:40 +1000

> On Tue, 2016-05-03 at 15:52 -0700, Yinghai Lu wrote:
>> BenH and DavidM,
>> Are you ok to let /proc/bus/pci/devices to expose resource value
>> instead of
>> BAR value?
>> powerpc already expose MMIO as resource value, but still keep IO as
>> BAR value?
>> 
>> Or can we just dump /proc/bus/pci support from now?
> 
> The problem tends to be old Xserver expectations...
> 
> That stuff has been a can of worms over the years and we did things in
> the kernel to work around X limitations. I'm not that keen on touching
> /proc at all in that regard. Leave it there do what it does today, it's
> a user visible ABI, don't change it.

I agree with Ben, whatever procfs is exporting in the past is what
the Xserver and other things expect on sparc64 and therefore is a
user facing ABI that can't be changed.

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Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Bjorn Helgaas <helgaas@kernel.org> - 2016-04-28 16:00 +0200
  Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-04-29 09:20 +0200
    Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-05-04 01:00 +0200
      Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Benjamin Herrenschmidt <benh@kernel.crashing.org> - 2016-05-04 02:40 +0200
        Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Bjorn Helgaas <helgaas@kernel.org> - 2016-05-04 03:30 +0200
          Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-05-04 07:10 +0200
            Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-05-04 08:00 +0200
              Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Bjorn Helgaas <helgaas@kernel.org> - 2016-05-04 17:20 +0200
                Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-05-04 20:50 +0200
                Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-05-05 02:30 +0200
                Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-05-05 18:00 +0200
                Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Benjamin Herrenschmidt <benh@kernel.crashing.org> - 2016-05-06 00:10 +0200
                Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-05-06 03:00 +0200
                Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-05-06 06:20 +0200
                Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Bjorn Helgaas <helgaas@kernel.org> - 2016-05-06 20:30 +0200
                Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus address  to resource Yinghai Lu <yinghai@kernel.org> - 2016-05-10 08:20 +0200
        Re: [PATCH v11 04/60] sparc/PCI: Use correct offset for bus  address to resource David Miller <davem@davemloft.net> - 2016-05-04 06:20 +0200

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