Re: [Xen-devel] [PATCH v3 03/14] xen: arm: allocate dom0 memory separately from preparing the dtb

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2013-11-11 at 12:08 +0000, Julien Grall wrote:
> On 11/08/2013 09:36 AM, Ian Campbell wrote:
> > On Thu, 2013-11-07 at 23:18 -0800, Julien Grall wrote:
> > I think
> >     / {
> >             "memory" {
> >                     #address-cells = 2;
> >                     #size-cells = 2;
> >                     device_type = "memory";
> >                     reg = <...>;
> >             }
> >     }
> > 
> > Won't work because the #foo-cells only applies to children.
> > 
> > I could do
> >     / {
> >             "memory" {
> >                     #address-cells = 2;
> >                     #size-cells = 2;
> >                     "memory@foo" {
> >                             device_type = "memory"
> >                             reg = <...>;
> >                     }
> >             }
> >     }
> > 
> > which puts the size under my control.
> 
> I have noticed that we have the same issue on the other nodes (gic,
> timer,...).

The timer node at least doesn't have any regions, does it? But for gic
yes this is trouble.

> Perhaps we can create a node "xen" which contains all the
> devices?

Would it be bogus to put them in the existing hypervisor node?

But maybe it is best to keep that separate. A "xen" node is somewhat
analogous to a "soc" or "motherboard" node I guess.

> "xen" {
>    #address-cells = 2;
>    #size-cells = 2;
>    memory {
>      ...
>    }
>    timer {
>      ...
>    }
> }



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