diff options
Diffstat (limited to 'arch/powerpc/mm/pgtable.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable.c | 49 |
1 files changed, 45 insertions, 4 deletions
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index 9f361ae571e9..d71c7777669c 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -221,14 +221,55 @@ int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address, entry = set_access_flags_filter(entry, vma, dirty); changed = !pte_same(*(ptep), entry); if (changed) { - if (!is_vm_hugetlb_page(vma)) - assert_pte_locked(vma->vm_mm, address); - __ptep_set_access_flags(vma->vm_mm, ptep, entry, address); - flush_tlb_page(vma, address); + assert_pte_locked(vma->vm_mm, address); + __ptep_set_access_flags(vma, ptep, entry, + address, mmu_virtual_psize); } return changed; } +#ifdef CONFIG_HUGETLB_PAGE +extern int huge_ptep_set_access_flags(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep, + pte_t pte, int dirty) +{ +#ifdef HUGETLB_NEED_PRELOAD + /* + * The "return 1" forces a call of update_mmu_cache, which will write a + * TLB entry. Without this, platforms that don't do a write of the TLB + * entry in the TLB miss handler asm will fault ad infinitum. + */ + ptep_set_access_flags(vma, addr, ptep, pte, dirty); + return 1; +#else + int changed, psize; + + pte = set_access_flags_filter(pte, vma, dirty); + changed = !pte_same(*(ptep), pte); + if (changed) { + +#ifdef CONFIG_PPC_BOOK3S_64 + struct hstate *h = hstate_vma(vma); + + psize = hstate_get_psize(h); +#ifdef CONFIG_DEBUG_VM + assert_spin_locked(huge_pte_lockptr(h, vma->vm_mm, ptep)); +#endif + +#else + /* + * Not used on non book3s64 platforms. But 8xx + * can possibly use tsize derived from hstate. + */ + psize = 0; +#endif + __ptep_set_access_flags(vma, ptep, pte, addr, psize); + } + return changed; +#endif +} +#endif /* CONFIG_HUGETLB_PAGE */ + #ifdef CONFIG_DEBUG_VM void assert_pte_locked(struct mm_struct *mm, unsigned long addr) { |