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Sampat" wrote: > >> Confidential computing guests require memory to be accepted before use. >> The unaccepted memory bitmap maintained by firmware does not track >> hotplugged memory ranges. >> >> Call arch_accept_memory() during the hot-add path to explicitly validate >> and transition the newly added memory to a private state, making it >> usable by the guest. >> >> Signed-off-by: Pratik R. Sampat >> --- >> mm/memory_hotplug.c | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c >> index a63ec679d861..8cfbf0541430 100644 >> --- a/mm/memory_hotplug.c >> +++ b/mm/memory_hotplug.c >> @@ -38,6 +38,7 @@ >> #include >> >> #include >> +#include > > This only exists for x86! Ah, I missed that entirely. Thanks for catching that. Probably not the best option to have a generic unaccepted_memory.h as well. Maybe, I should have arch_[un]accept_memory() definitions within mm.h wrapped within CONFIG_UNACCEPTED_MEMORY instead so that its cleaner. > > Otherwise, the mm/ changes are minimal so I volunteer this patchset > for the x86 tree ;) Ack! --Pratik