Re: Intel vs AMD x86-64

[H. Peter Anvin]

Followup to:  <Pine.LNX.4.58.0402231335430.3005@xxxxxxxxxxxxxxx>
By author:    Linus Torvalds <torvalds@xxxxxxxx>
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
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