diff options
Diffstat (limited to 'include/asm-powerpc/pgtable-ppc64.h')
| -rw-r--r-- | include/asm-powerpc/pgtable-ppc64.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-powerpc/pgtable-ppc64.h b/include/asm-powerpc/pgtable-ppc64.h index dd4c26dc57d..8e35c28462a 100644 --- a/include/asm-powerpc/pgtable-ppc64.h +++ b/include/asm-powerpc/pgtable-ppc64.h @@ -311,6 +311,17 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, old = pte_update(mm, addr, ptep, _PAGE_RW, 0); } +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT +static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + unsigned long old; + + if ((pte_val(*ptep) & _PAGE_RW) == 0) + return; + old = pte_update(mm, addr, ptep, _PAGE_RW, 1); +} + /* * We currently remove entries from the hashtable regardless of whether * the entry was young or dirty. The generic routines only flush if the |