diff options
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 4d7e2e9..024f85f 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -1267,8 +1267,10 @@ static inline int ptep_set_access_flags(struct vm_area_struct *vma, pte_t entry, int dirty) { pgste_t pgste; + pte_t oldpte; - if (pte_same(*ptep, entry)) + oldpte = *ptep; + if (pte_same(oldpte, entry)) return 0; if (mm_has_pgste(vma->vm_mm)) { pgste = pgste_get_lock(ptep); @@ -1278,7 +1280,8 @@ static inline int ptep_set_access_flags(struct vm_area_struct *vma, ptep_flush_direct(vma->vm_mm, address, ptep); if (mm_has_pgste(vma->vm_mm)) { - pgste_set_key(ptep, pgste, entry, vma->vm_mm); + if (pte_val(oldpte) & _PAGE_INVALID) + pgste_set_key(ptep, pgste, entry, vma->vm_mm); pgste = pgste_set_pte(ptep, pgste, entry); pgste_set_unlock(ptep, pgste); } else |