Re: [Xen-devel] [PATCH] make balloon driver not return pages which are in [xen_start_info->nr_pages,

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

On Thu, Jan 04, 2007 at 10:03:59AM +0000, Jan Beulich wrote:
> >>> Isaku Yamahata <yamahata@xxxxxxxxxxxxx> 04.01.07 10:06 >>>
> >make balloon driver not return pages which are in
> >[xen_start_info->nr_pages, max_pfn] on ia64.
> >On ia64 memory might be assigned sparsely. In that case
> >xen_start_info->nr_pages and max_pfn doesn't match while pages which are in
> >[xen_start_info->nr_pages, max_pfn] are used.
> 
> But where do you fill the balloon initially then instead, to support the case 
> where
> one wants the domain to be able to grow its memory consumption?

Xen/IA64 haven't supported growing memory beyond
xen_start_info->nr_pages yet so far.
If it were supported on IA64, probably memory would have to be populated
sparsely to relfect underlying machine. So code would be more complex.

-- 
yamahata

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