Re: [Xen-devel] [V4 PATCH 6/7] pvh dom0: Add and remove foreign pages

[Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>]

On Wed, 04 Dec 2013 00:00:54 +0000
Julien Grall <julien.grall@xxxxxxxxxx> wrote:

> 
> 
> On 12/03/2013 02:30 AM, Mukesh Rathor wrote:
> > In this patch, a new function, xenmem_add_foreign_to_pmap(), is
> > added
> 
> xenmem_add_foreign_to_p2m?
> 
> > to map pages from foreign guest into current dom0 for domU creation.
> > Such pages are typed p2m_map_foreign. Also, support is added here to
> > XENMEM_remove_from_physmap to remove such pages. Note, in the remove
> > path, we must release the refcount that was taken during the map
> > phase.
> 
> Your remove path is very interesting for the ARM port. For now we are 
> unable to unmap the foreign page because get_page() will always
> return NULL (as dom0 is not the owner).
> 
> I will give a try on ARM to see if it could resolve our problem.
> 

Don't know much about ARM, is the remove path failing to compile on it?
You can submit ARM modification patch after it's checked in?

thanks
mukesh

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