• Linus Torvalds's avatar
    Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux · 3cd86a58
    Linus Torvalds authored
    Pull arm64 updates from Catalin Marinas:
     "The bulk is in-kernel pointer authentication, activity monitors and
      lots of asm symbol annotations. I also queued the sys_mremap() patch
      commenting the asymmetry in the address untagging.
    
      Summary:
    
       - In-kernel Pointer Authentication support (previously only offered
         to user space).
    
       - ARM Activity Monitors (AMU) extension support allowing better CPU
         utilisation numbers for the scheduler (frequency invariance).
    
       - Memory hot-remove support for arm64.
    
       - Lots of asm annotations (SYM_*) in preparation for the in-kernel
         Branch Target Identification (BTI) support.
    
       - arm64 perf updates: ARMv8.5-PMU 64-bit counters, refactoring the
         PMU init callbacks, support for new DT compatibles.
    
       - IPv6 header checksum optimisation.
    
       - Fixes: SDEI (software delegated exception interface) double-lock on
         hibernate with shared events.
    
       - Minor clean-ups and refactoring: cpu_ops accessor,
         cpu_do_switch_mm() converted to C, cpufeature finalisation helper.
    
       - sys_mremap() comment explaining the asymmetric address untagging
         behaviour"
    
    * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (81 commits)
      mm/mremap: Add comment explaining the untagging behaviour of mremap()
      arm64: head: Convert install_el2_stub to SYM_INNER_LABEL
      arm64: Introduce get_cpu_ops() helper function
      arm64: Rename cpu_read_ops() to init_cpu_ops()
      arm64: Declare ACPI parking protocol CPU operation if needed
      arm64: move kimage_vaddr to .rodata
      arm64: use mov_q instead of literal ldr
      arm64: Kconfig: verify binutils support for ARM64_PTR_AUTH
      lkdtm: arm64: test kernel pointer authentication
      arm64: compile the kernel with ptrauth return address signing
      kconfig: Add support for 'as-option'
      arm64: suspend: restore the kernel ptrauth keys
      arm64: __show_regs: strip PAC from lr in printk
      arm64: unwind: strip PAC from kernel addresses
      arm64: mask PAC bits of __builtin_return_address
      arm64: initialize ptrauth keys for kernel booting task
      arm64: initialize and switch ptrauth kernel keys
      arm64: enable ptrauth earlier
      arm64: cpufeature: handle conflicts based on capability
      arm64: cpufeature: Move cpu capability helpers inside C file
      ...
    3cd86a58
context.c 8.69 KB