lkml.org 
[lkml]   [2006]   [Mar]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [RFC][PATCH] Expanding the size of "start" and "end" field in "struct resource"
Date

On Mar 15, 2006, at 2:01 PM, Kumar Gala wrote:

>
> 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.

As my memory comes back to me on this. I also believe that Andrew
asked me for size comparisons between a kernel using 32-bit start/end
and 64-bit start/end on a 32-bit machine for a allyesconfig build. I
don't believe I ever got around to doing this or reporting the
numbers to him. It would be useful to have both code size
differences and run time (if possible).

- kumar
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-03-15 23:11    [W:0.116 / U:0.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site