Re: [PATCH] sparsemem fix

[Franck Bui-Huu <vagabon.xyz@gmail.com>]

Ralf Baechle wrote:
> On Sat, Jul 08, 2006 at 04:47:39PM +0200, Franck Bui-Huu wrote:
> 
>> but the code seems to be in arch/mips/sgi-ip27, no ?
>>
>> BTW, Ralf, are there any needs for MIPS to support platforms whose
>> memory start is not 0 ? I have made a patch for that, and wondering if
>> it's worth to post it on the list...
> 
> Yes, while it's relativly rare such platforms do exist and they currently
> pay the price of wasting some memory for the allocation of unused entries
> in mem_map[].
> 

Ok I'll send that this week. I remember to have to replace CPHYSADDR()
macro with __pa() in boot init code still I don't if it's correct.

Can you tell me why we can't always use __pa() ?

Thanks

                Franck