• Will Deacon's avatar
    Merge branch 'for-next/mte' into for-next/core · baab8532
    Will Deacon authored
    Add userspace support for the Memory Tagging Extension introduced by
    Armv8.5.
    
    (Catalin Marinas and others)
    * for-next/mte: (30 commits)
      arm64: mte: Fix typo in memory tagging ABI documentation
      arm64: mte: Add Memory Tagging Extension documentation
      arm64: mte: Kconfig entry
      arm64: mte: Save tags when hibernating
      arm64: mte: Enable swap of tagged pages
      mm: Add arch hooks for saving/restoring tags
      fs: Handle intra-page faults in copy_mount_options()
      arm64: mte: ptrace: Add NT_ARM_TAGGED_ADDR_CTRL regset
      arm64: mte: ptrace: Add PTRACE_{PEEK,POKE}MTETAGS support
      arm64: mte: Allow {set,get}_tagged_addr_ctrl() on non-current tasks
      arm64: mte: Restore the GCR_EL1 register after a suspend
      arm64: mte: Allow user control of the generated random tags via prctl()
      arm64: mte: Allow user control of the tag check mode via prctl()
      mm: Allow arm64 mmap(PROT_MTE) on RAM-based files
      arm64: mte: Validate the PROT_MTE request via arch_validate_flags()
      mm: Introduce arch_validate_flags()
      arm64: mte: Add PROT_MTE support to mmap() and mprotect()
      mm: Introduce arch_calc_vm_flag_bits()
      arm64: mte: Tags-aware aware memcmp_pages() implementation
      arm64: Avoid unnecessary clear_user_page() indirection
      ...
    baab8532
cpuinfo.c 12.5 KB