Re: [Xen-devel] Re: A tale of three memory allocators

[Jesse Barnes <jbarnes@xxxxxxxxxxxx>]

On Friday, March 18, 2005 8:56 am, Jesse Barnes wrote:
> Rik van Riel <riel <at> redhat.com> writes:
> > Two out of three is enough.  I don't see the need for
> > both CONFIG_DISCONTIGMEM and CONFIG_VIRTUAL_MEM_MAP.
>
> Well, we need it for sn2.  We have very large memory holes within a node,
> so we use the virtual memmap to make the mem_map array within a node
> virtually contiguous.

Of course I mean that the hypervisor probably has to support this stuff to 
work correctly on multi-node ia64 machines.  The guests can probably get away 
with being special cased since they can be presented with a contiguous memory 
model (Dan is this what you're doing now?)...

Thanks,
Jesse


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