Re: Intel vs AMD x86-64

H. Peter Anvin
2004-02-23T23:04:06Z

Followup to: <Pine.LNX.4.58.0402231335430.3005@ppc970.osdl.org>
By author: Linus Torvalds <torvalds@osdl.org>
In newsgroup: linux.dev.kernel
>
>
>
> On Mon, 23 Feb 2004, Rik van Riel wrote:
> > On Sat, 21 Feb 2004, Linus Torvalds wrote:
> >
> > > I'm really happy Intel finally got with the program,
> >
> > With the program? They still don't have an IOMMU ;)
>
> Hmm.. Let's see what their chipsets will look like for this thing. Since
> they don't have an integrated memory controller, they can't very well do
> the IOMMU on the CPU, now can they?
>
> So you can't blame them for that.
>

No, it should be in the northbridge. Note that *most* AGPGARTs work
as IOMMUs, but not all. They may not be 64 bits, though.

-hpa