* Oliver O'Halloran [off-list ref] wrote:

Currently ZONE_DEVICE depends on X86_64. This is fine for now, but it
will get unwieldly as new platforms get ZONE_DEVICE support. Moving it
to an arch selected Kconfig option to save us some trouble in the
future.

Cc: x86@kernel.org
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>

Acked-by: Ingo Molnar <mingo@kernel.org>

Thanks,

	Ingo