On Thu, Jun 04, 2020 at 01:32:40PM +0200, David Hildenbrand wrote: > Just a thought: If memory hotplug is applicable as well, you might > either want to always assume data->enable_4GB, or handle memory hotplug > events from the memory notifier, when new memory gets onlined (not sure > how tricky that is).
We probably want a highest_pfn_possible() or similar API instead of having drivers poking into random VM internals.
