Re: [Xen-devel] [RFC 16/24] xen/arm: Build DOM0 FDT by browsing the device tree structure

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2013-08-22 at 15:10 +0100, Julien Grall wrote:
> >>  
> >>      /*
> >>       * Sanity-check address sizes, since addresses and sizes which do
> >> [...]
> > 
> >> izecells));
> >> +    cells = &reg[0];
> >> +    dt_set_cell(&cells, addrcells, 0xb0000000);
> >> +    dt_set_cell(&cells, sizecells, 0x20000);
> > 
> > Aside: this really ought to become dynamic, based on finding a hole in
> > the physical address map...
> 
> Is this address used somewhere in Xen? I didn't find any place.

I don't think so, it is just used to indicate to the guest where there
is a safe bit of unused address space.

I'm not sure why the guest can't figure this out for itself, maybe
Stefano can fill us in.

Ian.



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