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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
parent1897bdc4d33167e9036460631d1349e59d841f2d (diff)
downloadlinux-34ee645e83b60ae3d5955f70ab9ab9a159136673.tar.bz2
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')
-rw-r--r--mm/fremap.c2
-rw-r--r--mm/huge_memory.c9
-rw-r--r--mm/hugetlb.c7
-rw-r--r--mm/ksm.c4
-rw-r--r--mm/memory.c3
-rw-r--r--mm/migrate.c3
-rw-r--r--mm/rmap.c2
7 files changed, 19 insertions, 11 deletions
diff --git a/mm/fremap.c b/mm/fremap.c
index 72b8fa361433..9129013732d7 100644
--- a/mm/fremap.c
+++ b/mm/fremap.c
@@ -37,7 +37,7 @@ static void zap_pte(struct mm_struct *mm, struct vm_area_struct *vma,
if (pte_present(pte)) {
flush_cache_page(vma, addr, pte_pfn(pte));
- pte = ptep_clear_flush(vma, addr, ptep);
+ pte = ptep_clear_flush_notify(vma, addr, ptep);
page = vm_normal_page(vma, addr, pte);
if (page) {
if (pte_dirty(pte))
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index de984159cf0b..1d89526ed531 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1036,7 +1036,7 @@ static int do_huge_pmd_wp_page_fallback(struct mm_struct *mm,
goto out_free_pages;
VM_BUG_ON_PAGE(!PageHead(page), page);
- pmdp_clear_flush(vma, haddr, pmd);
+ pmdp_clear_flush_notify(vma, haddr, pmd);
/* leave pmd empty until pte is filled */
pgtable = pgtable_trans_huge_withdraw(mm, pmd);
@@ -1179,7 +1179,7 @@ alloc:
pmd_t entry;
entry = mk_huge_pmd(new_page, vma->vm_page_prot);
entry = maybe_pmd_mkwrite(pmd_mkdirty(entry), vma);
- pmdp_clear_flush(vma, haddr, pmd);
+ pmdp_clear_flush_notify(vma, haddr, pmd);
page_add_new_anon_rmap(new_page, vma, haddr);
mem_cgroup_commit_charge(new_page, memcg, false);
lru_cache_add_active_or_unevictable(new_page, vma);
@@ -1512,7 +1512,7 @@ int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
pmd_t entry;
ret = 1;
if (!prot_numa) {
- entry = pmdp_get_and_clear(mm, addr, pmd);
+ entry = pmdp_get_and_clear_notify(mm, addr, pmd);
if (pmd_numa(entry))
entry = pmd_mknonnuma(entry);
entry = pmd_modify(entry, newprot);
@@ -1644,6 +1644,7 @@ static int __split_huge_page_splitting(struct page *page,
* serialize against split_huge_page*.
*/
pmdp_splitting_flush(vma, address, pmd);
+
ret = 1;
spin_unlock(ptl);
}
@@ -2834,7 +2835,7 @@ static void __split_huge_zero_page_pmd(struct vm_area_struct *vma,
pmd_t _pmd;
int i;
- pmdp_clear_flush(vma, haddr, pmd);
+ pmdp_clear_flush_notify(vma, haddr, pmd);
/* leave pmd empty until pte is filled */
pgtable = pgtable_trans_huge_withdraw(mm, pmd);
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);
diff --git a/mm/ksm.c b/mm/ksm.c
index 6b2e337bc03c..d247efab5073 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -892,7 +892,7 @@ static int write_protect_page(struct vm_area_struct *vma, struct page *page,
* this assure us that no O_DIRECT can happen after the check
* or in the middle of the check.
*/
- entry = ptep_clear_flush(vma, addr, ptep);
+ entry = ptep_clear_flush_notify(vma, addr, ptep);
/*
* Check that no O_DIRECT or similar I/O is in progress on the
* page
@@ -960,7 +960,7 @@ static int replace_page(struct vm_area_struct *vma, struct page *page,
page_add_anon_rmap(kpage, vma, addr);
flush_cache_page(vma, addr, pte_pfn(*ptep));
- ptep_clear_flush(vma, addr, ptep);
+ ptep_clear_flush_notify(vma, addr, ptep);
set_pte_at_notify(mm, addr, ptep, mk_pte(kpage, vma->vm_page_prot));
page_remove_rmap(page);
diff --git a/mm/memory.c b/mm/memory.c
index 3e503831e042..655fd3d34bb0 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -238,6 +238,7 @@ static void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb)
{
tlb->need_flush = 0;
tlb_flush(tlb);
+ mmu_notifier_invalidate_range(tlb->mm, tlb->start, tlb->end);
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
tlb_table_flush(tlb);
#endif
@@ -2234,7 +2235,7 @@ gotten:
* seen in the presence of one thread doing SMC and another
* thread doing COW.
*/
- ptep_clear_flush(vma, address, page_table);
+ ptep_clear_flush_notify(vma, address, page_table);
page_add_new_anon_rmap(new_page, vma, address);
mem_cgroup_commit_charge(new_page, memcg, false);
lru_cache_add_active_or_unevictable(new_page, vma);
diff --git a/mm/migrate.c b/mm/migrate.c
index 01439953abf5..41945cb0ca38 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1854,7 +1854,7 @@ fail_putback:
*/
flush_cache_range(vma, mmun_start, mmun_end);
page_add_anon_rmap(new_page, vma, mmun_start);
- pmdp_clear_flush(vma, mmun_start, pmd);
+ pmdp_clear_flush_notify(vma, mmun_start, pmd);
set_pmd_at(mm, mmun_start, pmd, entry);
flush_tlb_range(vma, mmun_start, mmun_end);
update_mmu_cache_pmd(vma, address, &entry);
@@ -1862,6 +1862,7 @@ fail_putback:
if (page_count(page) != 2) {
set_pmd_at(mm, mmun_start, pmd, orig_entry);
flush_tlb_range(vma, mmun_start, mmun_end);
+ mmu_notifier_invalidate_range(mm, mmun_start, mmun_end);
update_mmu_cache_pmd(vma, address, &entry);
page_remove_rmap(new_page);
goto fail_putback;
diff --git a/mm/rmap.c b/mm/rmap.c
index 19886fb2f13a..d3eb1e02d1c6 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1378,7 +1378,7 @@ static int try_to_unmap_cluster(unsigned long cursor, unsigned int *mapcount,
/* Nuke the page table entry. */
flush_cache_page(vma, address, pte_pfn(*pte));
- pteval = ptep_clear_flush(vma, address, pte);
+ pteval = ptep_clear_flush_notify(vma, address, pte);
/* If nonlinear, store the file page offset in the pte. */
if (page->index != linear_page_index(vma, address)) {