Re: [PATCH v3 02/11] s390x/mm: Fail when an altmap is used for arch_add_memory()
From: Michal Hocko <mhocko@kernel.org>
Date: 2019-07-01 12:46:32
Also in:
linux-arm-kernel, linux-mm, linux-s390, linux-sh, lkml
On Mon 01-07-19 09:43:06, Michal Hocko wrote:
On Mon 27-05-19 13:11:43, David Hildenbrand wrote:quoted
ZONE_DEVICE is not yet supported, fail if an altmap is passed, so we don't forget arch_add_memory()/arch_remove_memory() when unlocking support.Why do we need this? Sure ZONE_DEVICE is not supported for s390 and so might be the case for other arches which support hotplug. I do not see much point in adding warning to each of them.
I would drop this one. If there is a strong reason to have something like that it should come with a better explanation and it can be done on top. -- Michal Hocko SUSE Labs