[PATCH V2 2/3] powerpc: Add support for swiotlb on 32-bit

[Becky Bruce]

On May 27, 2009, at 3:29 PM, Ian Campbell wrote:

> On Wed, 2009-05-27 at 15:05 -0400, Becky Bruce wrote:
>> On May 22, 2009, at 6:11 AM, Ian Campbell wrote:
>>>
>>>
>>> BTW do you need swiotlb_bus_to_virt to be __weak or is the fact that
>>> it
>>> is implemented in terms of swiotlb_bus_to_phys sufficient?
>>
>> The default one in swiotlb calls phys_to_virt on the result of
>> swiotlb_bus_to_phys, which only works on lowmem.
>
> Perhaps we can simply enhance the default one to handle highmem  
> instead
> of making it arch specific?

That's fine by me - as long as what I've got will work for you guys  
I'm happy to stick it in the standard one (inside a nice pretty #ifdef  
CONFIG_HIGHMEM, of course).

Cheers,
B