On 04/13/2019 12:31 AM, Robin Murphy wrote: > ARCH_HAS_ZONE_DEVICE is somewhat meaningless in itself, and combined > with the long-out-of-date comment can lead to the impression than an > architecture may just enable it (since __add_pages() now "comprehends > device memory" for itself) and expect things to work. > > In practice, however, ZONE_DEVICE users have little chance of > functioning correctly without __HAVE_ARCH_PTE_DEVMAP, so let's clean > that up the same way as ARCH_HAS_PTE_SPECIAL and make it the proper > dependency so the real situation is clearer. > > Signed-off-by: Robin Murphy <robin.murphy@xxxxxxx> Reviewed-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
