Re: [Xen-ia64-devel] VTD is coming

[Alex Williamson <alex.williamson@xxxxxx>]

On Fri, 2007-05-11 at 07:04 +0200, Tristan Gingold wrote:
> On Fri, May 11, 2007 at 09:19:45AM +0800, Xu, Anthony wrote:
> > >You seems to be thinking about IPF specific implementation, right?
> > >The x86 VT-d patches which was posted to xen-devel has separate
> > >page table for VTD. I don't know its current development status, though.
> > >Making it arch-generic, it might be reused.
> 
> BTW using VTd tables for p2m makes Xen intel-locked (because p2m tables are
> visible from the domains).
> Is VT-d the only IOMMU on ia64 ?
> I don't know the reply but we should ask to vendors (HP, Fujitsu, Hitachi,
> NEC, Unisys...)

   Good point Tristan.  I think we should treat VTd as one of
potentially several io virtualization abstractions.  Thanks,

        Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.


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