The patch titled
Subject: mmu_notifier: call mmu_notifier_invalidate_range() from VMM
has been removed from the -mm tree. Its filename was
mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Joerg Roedel <jroedel@xxxxxxx>
Subject: 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@xxxxxxx>
Reviewed-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Reviewed-by: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Johannes Weiner <jweiner@xxxxxxxxxx>
Cc: Jay Cornwall <Jay.Cornwall@xxxxxxx>
Cc: Oded Gabbay <Oded.Gabbay@xxxxxxx>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mmu_notifier.h | 41 +++++++++++++++++++++++++++++++++
kernel/events/uprobes.c | 2 -
mm/fremap.c | 2 -
mm/huge_memory.c | 9 ++++---
mm/hugetlb.c | 7 ++++-
mm/ksm.c | 4 +--
mm/memory.c | 3 +-
mm/migrate.c | 3 +-
mm/rmap.c | 2 -
9 files changed, 61 insertions(+), 12 deletions(-)
diff -puN include/linux/mmu_notifier.h~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm include/linux/mmu_notifier.h
--- a/include/linux/mmu_notifier.h~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm
+++ a/include/linux/mmu_notifier.h
@@ -284,6 +284,44 @@ static inline void mmu_notifier_mm_destr
__young; \
})
+#define ptep_clear_flush_notify(__vma, __address, __ptep) \
+({ \
+ unsigned long ___addr = __address & PAGE_MASK; \
+ struct mm_struct *___mm = (__vma)->vm_mm; \
+ pte_t ___pte; \
+ \
+ ___pte = ptep_clear_flush(__vma, __address, __ptep); \
+ mmu_notifier_invalidate_range(___mm, ___addr, \
+ ___addr + PAGE_SIZE); \
+ \
+ ___pte; \
+})
+
+#define pmdp_clear_flush_notify(__vma, __haddr, __pmd) \
+({ \
+ unsigned long ___haddr = __haddr & HPAGE_PMD_MASK; \
+ struct mm_struct *___mm = (__vma)->vm_mm; \
+ pmd_t ___pmd; \
+ \
+ ___pmd = pmdp_clear_flush(__vma, __haddr, __pmd); \
+ mmu_notifier_invalidate_range(___mm, ___haddr, \
+ ___haddr + HPAGE_PMD_SIZE); \
+ \
+ ___pmd; \
+})
+
+#define pmdp_get_and_clear_notify(__mm, __haddr, __pmd) \
+({ \
+ unsigned long ___haddr = __haddr & HPAGE_PMD_MASK; \
+ pmd_t ___pmd; \
+ \
+ ___pmd = pmdp_get_and_clear(__mm, __haddr, __pmd); \
+ mmu_notifier_invalidate_range(__mm, ___haddr, \
+ ___haddr + HPAGE_PMD_SIZE); \
+ \
+ ___pmd; \
+})
+
/*
* set_pte_at_notify() sets the pte _after_ running the notifier.
* This is safe to start by updating the secondary MMUs, because the primary MMU
@@ -362,6 +400,9 @@ static inline void mmu_notifier_mm_destr
#define ptep_clear_flush_young_notify ptep_clear_flush_young
#define pmdp_clear_flush_young_notify pmdp_clear_flush_young
+#define ptep_clear_flush_notify ptep_clear_flush
+#define pmdp_clear_flush_notify pmdp_clear_flush
+#define pmdp_get_and_clear_notify pmdp_get_and_clear
#define set_pte_at_notify set_pte_at
#endif /* CONFIG_MMU_NOTIFIER */
diff -puN kernel/events/uprobes.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm kernel/events/uprobes.c
--- a/kernel/events/uprobes.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm
+++ a/kernel/events/uprobes.c
@@ -193,7 +193,7 @@ static int __replace_page(struct vm_area
}
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 -puN mm/fremap.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm mm/fremap.c
--- a/mm/fremap.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm
+++ a/mm/fremap.c
@@ -37,7 +37,7 @@ static void zap_pte(struct mm_struct *mm
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 -puN mm/huge_memory.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm mm/huge_memory.c
--- a/mm/huge_memory.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm
+++ a/mm/huge_memory.c
@@ -1035,7 +1035,7 @@ static int do_huge_pmd_wp_page_fallback(
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);
@@ -1178,7 +1178,7 @@ 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);
@@ -1511,7 +1511,7 @@ int change_huge_pmd(struct vm_area_struc
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);
@@ -1643,6 +1643,7 @@ static int __split_huge_page_splitting(s
* serialize against split_huge_page*.
*/
pmdp_splitting_flush(vma, address, pmd);
+
ret = 1;
spin_unlock(ptl);
}
@@ -2833,7 +2834,7 @@ static void __split_huge_zero_page_pmd(s
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 -puN mm/hugetlb.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm mm/hugetlb.c
--- a/mm/hugetlb.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm
+++ a/mm/hugetlb.c
@@ -2598,8 +2598,11 @@ int copy_hugetlb_page_range(struct mm_st
}
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(
* 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 -puN mm/ksm.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm mm/ksm.c
--- a/mm/ksm.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm
+++ a/mm/ksm.c
@@ -892,7 +892,7 @@ static int write_protect_page(struct vm_
* 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_s
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 -puN mm/memory.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm mm/memory.c
--- a/mm/memory.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm
+++ a/mm/memory.c
@@ -238,6 +238,7 @@ static void tlb_flush_mmu_tlbonly(struct
{
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 -puN mm/migrate.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm mm/migrate.c
--- a/mm/migrate.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm
+++ a/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 -puN mm/rmap.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm mm/rmap.c
--- a/mm/rmap.c~mmu_notifier-call-mmu_notifier_invalidate_range-from-vmm
+++ a/mm/rmap.c
@@ -1378,7 +1378,7 @@ static int try_to_unmap_cluster(unsigned
/* 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)) {
_
Patches currently in -mm which might be from jroedel@xxxxxxx are
mm-export-find_extend_vma-and-handle_mm_fault-for-driver-use.patch
iommu-amd-use-handle_mm_fault-directly-v2.patch
linux-next.patch
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