diff options
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 4 | ||||
| -rw-r--r-- | arch/s390/mm/gmap_helpers.c | 3 |
2 files changed, 4 insertions, 3 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 2c6cee8241e0..4740c75649eb 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -980,6 +980,8 @@ static inline void set_pmd(pmd_t *pmdp, pmd_t pmd) static inline void set_pte(pte_t *ptep, pte_t pte) { + if (pte_present(pte)) + pte = clear_pte_bit(pte, __pgprot(_PAGE_UNUSED)); WRITE_ONCE(*ptep, pte); } @@ -1332,8 +1334,6 @@ pgprot_t pgprot_writecombine(pgprot_t prot); static inline void set_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t entry, unsigned int nr) { - if (pte_present(entry)) - entry = clear_pte_bit(entry, __pgprot(_PAGE_UNUSED)); page_table_check_ptes_set(mm, addr, ptep, entry, nr); for (;;) { set_pte(ptep, entry); diff --git a/arch/s390/mm/gmap_helpers.c b/arch/s390/mm/gmap_helpers.c index 1cfe4724fbe2..60023b6fdcb1 100644 --- a/arch/s390/mm/gmap_helpers.c +++ b/arch/s390/mm/gmap_helpers.c @@ -181,7 +181,8 @@ void gmap_helper_try_set_pte_unused(struct mm_struct *mm, unsigned long vmaddr) if (IS_ERR_OR_NULL(ptep)) return; - __atomic64_or(_PAGE_UNUSED, (long *)ptep); + if (pte_present(*ptep)) + __atomic64_or(_PAGE_UNUSED, (long *)ptep); pte_unmap_unlock(ptep, ptl); } EXPORT_SYMBOL_GPL(gmap_helper_try_set_pte_unused); |