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> There are so many issues with 64-bit DAC support, that many of
> the people whining in this thread have not even considered, and

Such as ? - I can see the obvious ones

- Its slower
- Not all host bridges can hit all of RAM
- You want to use SAC and IOMMU when possible

> resources". How do you say "SAC is preferred for performance" with
> ia64's API? You can't.

I doubt they worried about it, SAC isnt terribly useful on IA64 right now.

> This, almost with several other issues, need to be considered and
> handled by whatever API you come up with. If it does not address
> all of these issues somehow, it is unacceptable.


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