-static inline void kvm_clean_pgd(pgd_t *pgd) {}
-static inline void kvm_clean_pmd(pmd_t *pmd) {}
-static inline void kvm_clean_pmd_entry(pmd_t *pmd) {}
-static inline void kvm_clean_pte(pte_t *pte) {}
-static inline void kvm_clean_pte_entry(pte_t *pte) {}
-