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SubjectRe: [PATCH v4 2/2] xen: add helpers to allocate unpopulated memory
On Tue, Aug 11, 2020 at 11:44:47AM +0200, Roger Pau Monne wrote:
> If enabled (because ZONE_DEVICE is supported) the usage of the new
> functionality untangles Xen balloon and RAM hotplug from the usage of
> unpopulated physical memory ranges to map foreign pages, which is the
> correct thing to do in order to avoid mappings of foreign pages depend
> on memory hotplug.

So please just select ZONE_DEVICE if this is so much better rather
than maintaining two variants.

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