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With the unified HMM/migrate_device > page table walk migrate_device needs HMM enabled. > Enable them explicitly to avoid breaking random configs. > > Cc: Andrew Morton > Cc: David Hildenbrand > Cc: Lorenzo Stoakes > Cc: "Liam R. Howlett" > Cc: Vlastimil Babka > Cc: Mike Rapoport > Cc: Suren Baghdasaryan > Cc: Michal Hocko > Signed-off-by: Mika Penttilä > Acked-by: David Hildenbrand (Arm) > --- > mm/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/mm/Kconfig b/mm/Kconfig > index 604c58199acb..b7a485beb9a7 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -687,6 +687,7 @@ config MIGRATION > > config DEVICE_MIGRATION > def_bool MIGRATION && ZONE_DEVICE > + select HMM_MIRROR > > config ARCH_ENABLE_HUGEPAGE_MIGRATION > bool Acked-by: Balbir Singh