2e3d5dc508
Adding these missing helpers for uffd-wp operations with pmd swap/migration entries. Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Reviewed-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Bobby Powers <bobbypowers@gmail.com> Cc: Brian Geffon <bgeffon@google.com> Cc: David Hildenbrand <david@redhat.com> Cc: Denis Plotnikov <dplotnikov@virtuozzo.com> Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "Kirill A . Shutemov" <kirill@shutemov.name> Cc: Martin Cracauer <cracauer@cons.org> Cc: Marty McFadden <mcfadden8@llnl.gov> Cc: Maya Gokhale <gokhale2@llnl.gov> Cc: Mel Gorman <mgorman@suse.de> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: Rik van Riel <riel@redhat.com> Cc: Shaohua Li <shli@fb.com> Link: http://lkml.kernel.org/r/20200220163112.11409-10-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
67 lines
1 KiB
C
67 lines
1 KiB
C
#ifndef _ASM_GENERIC_PGTABLE_UFFD_H
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#define _ASM_GENERIC_PGTABLE_UFFD_H
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#ifndef CONFIG_HAVE_ARCH_USERFAULTFD_WP
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static __always_inline int pte_uffd_wp(pte_t pte)
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{
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return 0;
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}
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static __always_inline int pmd_uffd_wp(pmd_t pmd)
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{
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return 0;
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}
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static __always_inline pte_t pte_mkuffd_wp(pte_t pte)
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{
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return pte;
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}
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static __always_inline pmd_t pmd_mkuffd_wp(pmd_t pmd)
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{
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return pmd;
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}
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static __always_inline pte_t pte_clear_uffd_wp(pte_t pte)
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{
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return pte;
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}
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static __always_inline pmd_t pmd_clear_uffd_wp(pmd_t pmd)
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{
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return pmd;
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}
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static __always_inline pte_t pte_swp_mkuffd_wp(pte_t pte)
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{
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return pte;
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}
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static __always_inline int pte_swp_uffd_wp(pte_t pte)
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{
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return 0;
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}
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static __always_inline pte_t pte_swp_clear_uffd_wp(pte_t pte)
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{
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return pte;
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}
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static inline pmd_t pmd_swp_mkuffd_wp(pmd_t pmd)
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{
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return pmd;
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}
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static inline int pmd_swp_uffd_wp(pmd_t pmd)
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{
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return 0;
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}
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static inline pmd_t pmd_swp_clear_uffd_wp(pmd_t pmd)
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{
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return pmd;
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}
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#endif /* CONFIG_HAVE_ARCH_USERFAULTFD_WP */
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#endif /* _ASM_GENERIC_PGTABLE_UFFD_H */
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