Re: RFC: COW for hugepages

[Andi Kleen]

On Thu, 8 Apr 2004 00:27:48 +1000
Anton Blanchard <anton@xxxxxxxxx> wrote:

>  
> > Implementing this for ppc64 only is just wrong. Before you do this 
> > I would suggest to factor out the common code in the various hugetlbpage
> > implementations and then implement it in common code.
> 
> I could say a similar thing about your i386 specific largepage modifications
> in the NUMA api :)

All they did was to modify the code to lazy faulting. That is architecture specific

(and add the mpol code, but that was pretty minor) 

COW is a different thing though.

> 
> We should probably look at making lots of the arch specific hugetlb code
> common but im not sure we want that to become a prerequisite for merging
> NUMA API and hugepage COW.

That would just make the merging later harder. Making it common first and then
adding features would be better.

-Andi
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