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authorJoerg Roedel <jroedel@suse.de>2014-11-13 13:46:09 +1100
committerOded Gabbay <oded.gabbay@amd.com>2014-11-13 13:46:09 +1100
commit34ee645e83b60ae3d5955f70ab9ab9a159136673 (patch)
tree49aa485f580cd9594f89f0b761dd685b2c2981af /mm/hugetlb.c
parent1897bdc4d33167e9036460631d1349e59d841f2d (diff)
mmu_notifier: call mmu_notifier_invalidate_range() from VMM
Add calls to the new mmu_notifier_invalidate_range() function to all places in the VMM that need it. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Jérôme Glisse <jglisse@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rik van Riel <riel@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Johannes Weiner <jweiner@redhat.com> Cc: Jay Cornwall <Jay.Cornwall@amd.com> Cc: Oded Gabbay <Oded.Gabbay@amd.com> Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Diffstat (limited to 'mm/hugetlb.c')
-rw-r--r--mm/hugetlb.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 9fd722769927..2e6add04fa1b 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2598,8 +2598,11 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
}
set_huge_pte_at(dst, addr, dst_pte, entry);
} else {
- if (cow)
+ if (cow) {
huge_ptep_set_wrprotect(src, addr, src_pte);
+ mmu_notifier_invalidate_range(src, mmun_start,
+ mmun_end);
+ }
entry = huge_ptep_get(src_pte);
ptepage = pte_page(entry);
get_page(ptepage);
@@ -2899,6 +2902,7 @@ retry_avoidcopy:
/* Break COW */
huge_ptep_clear_flush(vma, address, ptep);
+ mmu_notifier_invalidate_range(mm, mmun_start, mmun_end);
set_huge_pte_at(mm, address, ptep,
make_huge_pte(vma, new_page, 1));
page_remove_rmap(old_page);
@@ -3374,6 +3378,7 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma,
* and that page table be reused and filled with junk.
*/
flush_tlb_range(vma, start, end);
+ mmu_notifier_invalidate_range(mm, start, end);
mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex);
mmu_notifier_invalidate_range_end(mm, start, end);