Re: [Xen-devel] One question about the hypercall to translate gfn to mfn.

[Malcolm Crossley <malcolm.crossley@xxxxxxxxxx>]

On 09/12/14 11:23, Jan Beulich wrote:
>>>> On 09.12.14 at 12:17, <Paul.Durrant@xxxxxxxxxx> wrote:
>> I think we want be able to avoid setting up a PTE in the MMU since it's not 
>> needed in most (or perhaps all?) cases.
> 
> With shared page tables, there's no way to do one without the other.
> 
Interestingly the IOMMU in front of the Intel GPU is only capable of
handling 4k pages and so we wouldn't end up with share page tables being
used.

For other PCI device's then shared page tables will be a problem.

Malcolm

> Jan
> 
> 
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