Re: [2/3] Set compatibility flag for 4GB zone on IA64

[Jeff Garzik]

Luck, Tony wrote:
> ia64 isn't all that homogeneous.  SGI systems stuff *all* memory
> into the DMA zone as their I/O devices have no 32-bit limits (just
> as well really as there is no memory below 4G on an Altix!).

SGI machines support random PCI cards, right?  If so, you cannot presume 
I/O devices have no 32-bit limits.

	Jeff


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