>> Can we assume mmu_notifier is only used by kvm now? >> if not, we need to make new notifier. > > KVM is no fundamentally different from other users in this respect, so > I don't see why need a new notifier. If it works for others it'll work > for KVM and the other way around is true too. > > mmu notifier users can or cannot take a page pin. KVM does. GRU > doesn't. XPMEM does. All of them releases any pin after > mmu_notifier_invalidate_page. All that is important is to run > mmu_notifier_invalidate_page _after_ the ptep_clear_young_notify, so > that we don't nuke secondary mappings on the pages unless we really go > to nuke the pte. Thank you kindful explain. I understand it :) -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
