Re: [Xen-devel] [PATCH v6] xen/arm: Allow balooning working with 1:1 memory mapping

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 12/19/2013 01:51 PM, Ian Campbell wrote:
> On Tue, 2013-12-17 at 14:55 +0000, Stefano Stabellini wrote:
> > On Tue, 17 Dec 2013, Julien Grall wrote:
> > > With the lack of iommu, dom0 must have a 1:1 memory mapping for all
> > > these guest physical address. When the ballon decides to give back a
> > > page to the kernel, this page must have the same address as previously.
> > > Otherwise, we will loose the 1:1 mapping and will break DMA-capable
> > > devices.
> > >
> > > Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
> > > Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
> > > Cc: Keir Fraser <keir@xxxxxxx>
> > Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> Keir, any objections to this patch?
Hi Ian,

Do we need to wait Keir Ack? Without this patch most of supported ARM 
platform won't be able to create guest correctly. On the Arndale, the 
network is unstable and on midway, the kernel get stucks.
It would be nice to have this patch for the next Xen 4.4 RC.

Sincerely yours,

--
Julien Grall

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