Re: [Xen-devel] Regarding page table management changes from Xen v1to Xen v2 (and v3)

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 27 Apr 2006, at 00:33, Anthony Liguori wrote:

> > > Couldn't we temporarily map the page table page?  Not that we would 
> > > actually want to do that.  Just trying to confirm my understand.
> > Sure, but that's expensive on 32b as map_domain_mem has to do real 
> > work
> > (it's cheap on 64b as we have a 1-to-1 map of machine memory).
> Excellent, that's just what I thought.
>
> Thanks Ian!
Where do you get the machine address of the page to map, given a linear 
address at the hypercall interface? You'd still need a linear mapping 
access, but you'd want to read out the pde not the pte.
 -- Keir


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