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Date: Tue, 18 Sep 2007 19:01:29 +0400
From: Valentine Barshak <vbarshak@ru.mvista.com>
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To: Kumar Gala <galak@kernel.crashing.org>
Subject: Re: [RFC] [PATCH] PowerPC: Add 64-bit phys addr support to 32-bit pci.
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Kumar Gala wrote:
> 
> On Sep 18, 2007, at 9:44 AM, Valentine Barshak wrote:
> 
>> Add 64-bit physical address support to PCI.
> 
> Can you expand on your commit message.  for example why do this? is it 
> address a bug fix, etc..
> 
>>
>> Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
>> ---
>>  arch/powerpc/kernel/iomap.c  |    4 +--
>>  arch/powerpc/kernel/pci_32.c |   56 
>> +++++++++++++++++++++++++++++--------------
>>  2 files changed, 41 insertions(+), 19 deletions(-)
> 
> - k
> 

Currently 32-bit pci code doesn't support 64-bit physical addresses.
We have to add 64-bit addr support in order to bring-up pci on PowerPC 
440. Actually, this refers to the conversation started here:

http://ozlabs.org/pipermail/linuxppc-dev/2007-September/042267.html
Thanks,
Valentine.