Extended Addressing Mode

[Becky Bruce]

On Oct 22, 2008, at 1:11 PM, Matt Sealey wrote:

>
>
> Kumar Gala wrote:
>> On Oct 22, 2008, at 9:19 AM, Matt Sealey wrote:
>>>
>>>
>>> Kumar Gala wrote:
>>>> On Oct 22, 2008, at 8:42 AM, Matt Sealey wrote:
>>>>> So to confirm, XAEN support through Becky's patches does support  
>>>>> the MPC8641D/e600 cores?
>>>> Yes, its the only part that has XAEN.
>>>
>>> Okay I saw a lot of e500/BookE support go past but nothing  
>>> specific :)
>> The "XAEN" is specific to e600.  e500 has its own ability to do 36- 
>> bit physical (not called XAEN).
>
> You have to forgive me I was only half awake when I started :D
>
> Yeah so I saw BookE and e500 stuff go past but nothing specific for  
> e600/XAEN. I mailed Becky and got no response. I'm glad to know it's  
> in there though, somewhere.

Huh?  I have one mail from you, on Sep 1, to which I responded on Sep  
2.  Was there another mail I missed, or did you not see my response?   
Freescale's mail server is unreliable, and since I'm not in the habit  
of ignoring emails, feel free to nag me anytime if you send me  
something and don't get a response.

>
>
> Just so it has been asked, do you know in a broad sense what it  
> would take to add the non-contiguous memory mapping support? Doesn't  
> ppc64 already have this?


PPC64 has SPARSEMEM support, IIRC. It's non-trivial to add for 32-bit,  
although I haven't scoped it out in any detail.

Cheers,
B