On Tue, Jun 09, 2026 at 11:52:21AM +0200, David Hildenbrand (Arm) wrote: > On 6/5/26 23:19, Gregory Price wrote: > > Drivers which may pass hotplug policy down to DAX need MMOP_ symbols > > and the mhp_get_default_online_type function for hotplug use cases. > > > > Some drivers (cxl) co-mingle their hotplug and devdax use-cases into > > the same driver code, and chose the dax_kmem path as the default driver > > path - making it difficult to require hotplug as a predicate to building > > the overall driver (it may break other non-hotplug use-cases). > > > > Export mhp_get_default_online_type function to allow these drivers to > > build when hotplug is disabled and still use the DAX use case. > > > > In the built-out case we simply return MMOP_OFFLINE as it's > > Ah, you mean without CONFIG_MEMORY_HOTPLUG >
Yeah i'll update the commit message, thanks! > > non-destructive. The internal function can never return -1 either, > > so we choose this to allow for defining the function with 'enum mmop'. > > Acked-by: David Hildenbrand (Arm) <[email protected]> > > -- > Cheers, > > David
