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
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