Subject: Re: [RFC PATCH 03/19] powerpc: gamecube: bootwrapper bits

From: Benjamin Herrenschmidt <[email-masked]>
Date: Thu, 26 Nov 2009 15:36:56 +1100

On Tue, 2009-11-24 at 22:00 +0100, Segher Boessenkool wrote:
> 
> Sure, the memory controllers don't do coherency.  I'm slightly worried
> about two things:
> 1) Will the generic code use M=0 as well?  Is it a problem if it  
> doesn't?

We can make it not do it.

> 2) Do lwarx. etc. work in M=0? 

They should hopefully... as long as you don't rely on the reservation
blowing as a result of a DMA write.

Cheers,
Ben