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SubjectRe: [PATCH] Add I/O hypercalls for i386 paravirt
On Wed, Aug 22, 2007 at 05:38:31PM -0700, Jeremy Fitzhardinge wrote:
> Andi Kleen wrote:
> > On Wed, Aug 22, 2007 at 04:14:41PM -0700, Jeremy Fitzhardinge wrote:
> >
> >> (which would also have VT, since
> >> all new processors do).
> >>
> >
> > Not true unfortunately. The Intel low end parts like Celerons (which
> > are actually shipped in very large numbers) don't. Also Intel
> > is still shipping some CPUs that don't support it at all, like
> > the ULV Centrinos which are based on an older core.
> >
>
> Likely to be missing VT-d too, right?

VT-d is chipset functionality. So it depends on the chipset.

At least initially the non Intel chipsets and lowend chips are unlikely
to get IOMMUs I guess.

There might be some exceptions. e.g. the GPU vendors seem
to want to to their own IOMMUs, so perhaps graphic devices
might have them anyways.

-Andi
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