Re: [Xen-devel] [V2 PATCH 6/8] PVH dom0: Introduce p2m_map_foreign

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2013-11-26 at 16:00 +0000, George Dunlap wrote:
> On Sat, Nov 23, 2013 at 12:03 AM, Mukesh Rathor
> <mukesh.rathor@xxxxxxxxxx> wrote:
> > In this patch, a new type p2m_map_foreign is introduced for pages
> > that toolstack on PVH dom0 maps from foreign domains that its creating
> > or supporting during it's run time.
> >
> > Signed-off-by: Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>
> 
> Why is this needed?  Does ARM have a concept of p2m_map_foreign?  grep
> doesn't turn it up... how does ARM dom0 deal with foreign mappings,
> and is there a reason we can't copy their approach?

The p2m types are currently per-arch. ARM doesn't currently have much in
the way of the concept of such things, but it should eventually and
foreign map seems likely to be one of them.

Ian.


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