Re: Intel vs AMD x86-64

David S. Miller
2004-02-23T22:06:55Z

On Mon, 23 Feb 2004 14:08:40 -0800 (PST)
Linus Torvalds <torvalds@osdl.org> wrote:

> In fact, I _think_ you could actually use the AGP bridge as a strange
> IOMMU. Of course, right now their AGP bridges are all 32-bit limited
> anyway, but the point being that they at least in theory would seem to
> have the capability to do this.

Ok, I see. In fact, I remember some vague notion that the AGP bridge
on the Athlon's could technically be used as a full-on IOMMU, especially
since it was all derived from Alpha PCI chipsets which did use things
this way.