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authorPeter Xu2022-10-24 15:33:36 -0400
committerAndrew Morton2022-11-08 17:37:21 -0800
commitb12fdbf15f92b6cf5fecdd8a1855afe8809e5c58 (patch)
tree65cccea20e27eb0909024e5a5eb0e516f4fbdc94
parent26215b7ee923b9251f7bb12c4e5f09dc465d35f2 (diff)
Revert "mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in"
With " mm/uffd: Fix vma check on userfault for wp" to fix the registration, we'll be safe to remove the macro hacks now. Link: https://lkml.kernel.org/r/20221024193336.1233616-3-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-rw-r--r--mm/hugetlb.c4
-rw-r--r--mm/memory.c2
-rw-r--r--mm/mprotect.c2
3 files changed, 0 insertions, 8 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index d11e92117d4a..fc8908d715d6 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5114,7 +5114,6 @@ static void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct
* unmapped and its refcount is dropped, so just clear pte here.
*/
if (unlikely(!pte_present(pte))) {
-#ifdef CONFIG_PTE_MARKER_UFFD_WP
/*
* If the pte was wr-protected by uffd-wp in any of the
* swap forms, meanwhile the caller does not want to
@@ -5126,7 +5125,6 @@ static void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct
set_huge_pte_at(mm, address, ptep,
make_pte_marker(PTE_MARKER_UFFD_WP));
else
-#endif
huge_pte_clear(mm, address, ptep, sz);
spin_unlock(ptl);
continue;
@@ -5155,13 +5153,11 @@ static void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct
tlb_remove_huge_tlb_entry(h, tlb, ptep, address);
if (huge_pte_dirty(pte))
set_page_dirty(page);
-#ifdef CONFIG_PTE_MARKER_UFFD_WP
/* Leave a uffd-wp pte marker if needed */
if (huge_pte_uffd_wp(pte) &&
!(zap_flags & ZAP_FLAG_DROP_MARKER))
set_huge_pte_at(mm, address, ptep,
make_pte_marker(PTE_MARKER_UFFD_WP));
-#endif
hugetlb_count_sub(pages_per_huge_page(h), mm);
page_remove_rmap(page, vma, true);
diff --git a/mm/memory.c b/mm/memory.c
index f88c351aecd4..81cc75e71888 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1393,12 +1393,10 @@ zap_install_uffd_wp_if_needed(struct vm_area_struct *vma,
unsigned long addr, pte_t *pte,
struct zap_details *details, pte_t pteval)
{
-#ifdef CONFIG_PTE_MARKER_UFFD_WP
if (zap_drop_file_uffd_wp(details))
return;
pte_install_uffd_wp_if_needed(vma, addr, pte, pteval);
-#endif
}
static unsigned long zap_pte_range(struct mmu_gather *tlb,
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 99762403cc8f..8d770855b591 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -267,7 +267,6 @@ static unsigned long change_pte_range(struct mmu_gather *tlb,
} else {
/* It must be an none page, or what else?.. */
WARN_ON_ONCE(!pte_none(oldpte));
-#ifdef CONFIG_PTE_MARKER_UFFD_WP
if (unlikely(uffd_wp && !vma_is_anonymous(vma))) {
/*
* For file-backed mem, we need to be able to
@@ -279,7 +278,6 @@ static unsigned long change_pte_range(struct mmu_gather *tlb,
make_pte_marker(PTE_MARKER_UFFD_WP));
pages++;
}
-#endif
}
} while (pte++, addr += PAGE_SIZE, addr != end);
arch_leave_lazy_mmu_mode();