mm/hugetlb: introduce huge pte version of uffd-wp helpers
authorPeter Xu <peterx@redhat.com>
Fri, 13 May 2022 03:22:54 +0000 (20:22 -0700)
committerAndrew Morton <akpm@linux-foundation.org>
Fri, 13 May 2022 14:20:10 +0000 (07:20 -0700)
commit229f3fa778c50edf12b34bd91b2025645a11bb94
treed765fb981e1917d86d0247a2a0760d53479d6aaf
parentc56d1b62cce83695823c13e52f73e92eb568c0c1
mm/hugetlb: introduce huge pte version of uffd-wp helpers

They will be used in the follow up patches to either check/set/clear
uffd-wp bit of a huge pte.

So far it reuses all the small pte helpers.  Archs can overwrite these
versions when necessary (with __HAVE_ARCH_HUGE_PTE_UFFD_WP* macros) in the
future.

Link: https://lkml.kernel.org/r/20220405014858.14531-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: "Kirill A . Shutemov" <kirill@shutemov.name>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
arch/s390/include/asm/hugetlb.h
include/asm-generic/hugetlb.h