Changes

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Do not make a clean PTE dirty in pte_mkwrite()

   The Arm architecture, for backwards compatibility reasons (ARMv8.0
   before in-hardware dirty bit management - DBM), uses the PTE_RDONLY
   bit to mean !dirty while the PTE_WRITE bit means DBM enabled. The
   arm64 pte_mkwrite() simply clears the PTE_RDONLY bit and this
   inadvertently makes the PTE pte_hw_dirty(). Most places making a PTE
   writable also invoke pte_mkdirty() but do_swap_page() does not and we
   end up with dirty, freshly swapped in, writeable pages.

 - Do not warn if the destination page is already MTE-tagged in
   copy_highpage()

   In the majority of the cases, a destination page copied into is
   freshly allocated without the PG_mte_tagged flag set. However, the
   folio migration may be restarted if __folio_migrate_mapping() failed,
   triggering the benign WARN_ON_ONCE().

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mte: Do not warn if the page is already tagged in copy_highpage()
  arm64, mm: avoid always making PTE dirty in pte_mkwrite()