Messages in this thread | | | Date | Tue, 28 Aug 2018 17:24:14 +0200 | From | Michal Hocko <> | Subject | Re: [PATCH 4/7] mm/hmm: properly handle migration pmd |
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On Fri 24-08-18 20:05:46, Zi Yan wrote: [...] > > + if (!pmd_present(pmd)) { > > + swp_entry_t entry = pmd_to_swp_entry(pmd); > > + > > + if (is_migration_entry(entry)) { > > I think you should check thp_migration_supported() here, since PMD migration is only enabled in x86_64 systems. > Other architectures should treat PMD migration entries as bad.
How can we have a migration pmd entry when the migration is not supported?
-- Michal Hocko SUSE Labs
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