Re: [RFC][PATCH] Expanding the size of "start" and "end" field in "struct resource"

[Kumar Gala <galak@kernel.crashing.org>]

On Mar 15, 2006, at 2:13 PM, Eric W. Biederman wrote:

> Kumar Gala <galak@kernel.crashing.org> writes:
>
>> On Mar 15, 2006, at 1:57 PM, Arjan van de Ven wrote:
>>
>>>
>>>> One of the possible solutions to this problem is that expand the  
>>>> size
>>>> of "start" and "end" to "unsigned long long". But whole of the  
>>>> PCI  and
>>>> driver code has been written assuming start and end to be  
>>>> unsigned  long
>>>> and compiler starts throwing warnings.
>>>
>>>
>>> please use dma_addr_t then instead of unsigned long long
>>>
>>> this is the right size on all platforms afaik (could a ppc64 person
>>> verify this?> ;)
>>
>> Actually we really just want "start" and "end" to be u64 on all   
>> platforms.
>> Linus was ok with this change but no one has gone through  and  
>> fixed everything
>> that would be required for it.
>
> Since it is faster to ask :)
>
> How is it that other pieces of code have problems?
> Warnings or something nasty?

Warnings primarily, however I think some places have assumptions  
about size that have to be looked at.

- kumar