pte_hw_valid 73 arch/powerpc/mm/book3s64/pgtable.c WARN_ON(pte_hw_valid(pmd_pte(*pmdp)) && !pte_protnone(pmd_pte(*pmdp))); pte_hw_valid 186 arch/powerpc/mm/pgtable.c VM_WARN_ON(pte_hw_valid(*ptep) && !pte_protnone(*ptep));