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    Subject[PATCH 00/36] AArch64 Linux kernel port
    Date
    This set of patches implements the core Linux support for the AArch64
    (64-bit ARM) architecture.


    ARM introduced AArch64 as part of the ARMv8 architecture and consists of
    a substantially revised exception model (with 4 exception levels: EL0 -
    user, EL1 - kernel, EL2 - hypervisor, EL3 - secure monitor), new A64
    instruction set based on larger register file, new FP/SIMD instructions.
    The new ABI is LP64 and takes advantage of the larger register file and
    mandates FP.

    AArch64 documentation currently available (publicly, though
    click-through agreement required):

    - Instruction Set Overview:
    http://infocenter.arm.com/help/topic/com.arm.doc.genc010197a/index.html

    - ABI (PCS, ELF, DWARF, C++):
    http://infocenter.arm.com/help/topic/com.arm.doc.ihi0059a/index.html


    The AArch64 Linux port follows the guidance for new architecture ports
    using generic headers (including unistd.h) and as much generic code as
    possible (some library functions may be later optimised, based on
    benchmarking results).

    There is no hardware platform available at this point. From a kernel
    perspective, the aim is to minimise (or even completely remove) the
    platform code from the architecture specific directory. FDT is currently
    mandated and there are ongoing discussions for ACPI support.

    In terms of MMU, it currently supports 39-bit address space for user and
    kernel (each) with 3-level page table and 4KB pages or 2-level page
    table and 64KB pages (see Documentation/aarch64/memory.txt). The virtual
    address space can be extended to 48-bit.

    Compat (32-bit) user applications (ARM EABI only) are supported with the
    4KB page configuration. There is no interworking between AArch32 and
    AArch64 code (the architecture requires an exception entry/exit to
    change the mode).

    Linux Test Project (LTP) and LAMP stack have been used to test and
    validate this code against ARM simulation model throughout the
    development. Compilation requires a new aarch64-none-linux-gnu-
    toolchain (http://gcc.gnu.org/ml/gcc-patches/2012-05/msg01694.html).


    These patches are also available on this branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64.git upstream


    Regards,

    Catalin


    Catalin Marinas (25):
    atomic64_test: Simplify the #ifdef for atomic64_dec_if_positive()
    test
    fs: Build sys_stat64() and friends if __ARCH_WANT_COMPAT_STAT64
    fdt: Add generic dt_memblock_reserve() function
    AArch64: Assembly macros and definitions
    AArch64: Kernel booting and initialisation
    AArch64: Exception handling
    AArch64: MMU definitions
    AArch64: MMU initialisation
    AArch64: MMU fault handling and page table management
    AArch64: Process management
    AArch64: CPU support
    AArch64: Cache maintenance routines
    AArch64: TLB maintenance functionality
    AArch64: Atomic operations
    AArch64: Device specific operations
    AArch64: DMA mapping API
    AArch64: SMP support
    AArch64: ELF definitions
    AArch64: System calls handling
    AArch64: Signal handling support
    AArch64: User access library functions
    AArch64: Floating point and SIMD
    AArch64: Miscellaneous header files
    AArch64: Build infrastructure
    AArch64: MAINTAINERS update

    Marc Zyngier (3):
    AArch64: IRQ handling
    AArch64: Miscellaneous library functions
    AArch64: Generic timers support

    Will Deacon (8):
    ipc: Add COMPAT_SHMLBA support
    ipc: allow compat IPC version field parsing if
    !ARCH_WANT_OLD_COMPAT_IPC
    ipc: compat: use signed size_t types for msgsnd and msgrcv
    AArch64: VDSO support
    AArch64: 32-bit (compat) applications support
    AArch64: Debugging support
    AArch64: Performance counters support
    AArch64: Loadable modules

    Documentation/aarch64/booting.txt | 139 +++
    Documentation/aarch64/memory.txt | 69 ++
    MAINTAINERS | 6 +
    arch/aarch64/Kconfig | 263 +++++
    arch/aarch64/Kconfig.debug | 44 +
    arch/aarch64/Makefile | 71 ++
    arch/aarch64/boot/.gitignore | 2 +
    arch/aarch64/boot/Makefile | 38 +
    arch/aarch64/boot/install.sh | 52 +
    arch/aarch64/include/asm/Kbuild | 50 +
    arch/aarch64/include/asm/asm-offsets.h | 1 +
    arch/aarch64/include/asm/assembler.h | 143 +++
    arch/aarch64/include/asm/atomic.h | 307 +++++
    arch/aarch64/include/asm/auxvec.h | 23 +
    arch/aarch64/include/asm/barrier.h | 53 +
    arch/aarch64/include/asm/bitops.h | 75 ++
    arch/aarch64/include/asm/bitsperlong.h | 24 +
    arch/aarch64/include/asm/byteorder.h | 22 +
    arch/aarch64/include/asm/cache.h | 33 +
    arch/aarch64/include/asm/cacheflush.h | 210 ++++
    arch/aarch64/include/asm/cachetype.h | 49 +
    arch/aarch64/include/asm/cmpxchg.h | 181 +++
    arch/aarch64/include/asm/compat.h | 233 ++++
    arch/aarch64/include/asm/compiler.h | 31 +
    arch/aarch64/include/asm/cputype.h | 50 +
    arch/aarch64/include/asm/debug-monitors.h | 89 ++
    arch/aarch64/include/asm/device.h | 27 +
    arch/aarch64/include/asm/dma-mapping.h | 134 +++
    arch/aarch64/include/asm/elf.h | 177 +++
    arch/aarch64/include/asm/exception.h | 24 +
    arch/aarch64/include/asm/exec.h | 24 +
    arch/aarch64/include/asm/fb.h | 35 +
    arch/aarch64/include/asm/fcntl.h | 30 +
    arch/aarch64/include/asm/fpsimd.h | 65 ++
    arch/aarch64/include/asm/futex.h | 135 +++
    arch/aarch64/include/asm/hardirq.h | 53 +
    arch/aarch64/include/asm/hw_breakpoint.h | 138 +++
    arch/aarch64/include/asm/hwcap.h | 58 +
    arch/aarch64/include/asm/io.h | 260 +++++
    arch/aarch64/include/asm/irq.h | 8 +
    arch/aarch64/include/asm/irqflags.h | 92 ++
    arch/aarch64/include/asm/memblock.h | 24 +
    arch/aarch64/include/asm/memory.h | 145 +++
    arch/aarch64/include/asm/mmu.h | 28 +
    arch/aarch64/include/asm/mmu_context.h | 153 +++
    arch/aarch64/include/asm/module.h | 24 +
    arch/aarch64/include/asm/mutex.h | 132 +++
    arch/aarch64/include/asm/page.h | 68 ++
    arch/aarch64/include/asm/param.h | 24 +
    arch/aarch64/include/asm/perf_event.h | 23 +
    arch/aarch64/include/asm/pgalloc.h | 114 ++
    arch/aarch64/include/asm/pgtable-2level-hwdef.h | 44 +
    arch/aarch64/include/asm/pgtable-2level-types.h | 61 +
    arch/aarch64/include/asm/pgtable-3level-hwdef.h | 51 +
    arch/aarch64/include/asm/pgtable-3level-types.h | 67 ++
    arch/aarch64/include/asm/pgtable-hwdef.h | 95 ++
    arch/aarch64/include/asm/pgtable.h | 329 ++++++
    arch/aarch64/include/asm/pmu.h | 83 ++
    arch/aarch64/include/asm/proc-fns.h | 52 +
    arch/aarch64/include/asm/processor.h | 175 +++
    arch/aarch64/include/asm/procinfo.h | 45 +
    arch/aarch64/include/asm/prom.h | 1 +
    arch/aarch64/include/asm/ptrace.h | 207 ++++
    arch/aarch64/include/asm/setup.h | 58 +
    arch/aarch64/include/asm/shmparam.h | 29 +
    arch/aarch64/include/asm/sigcontext.h | 70 ++
    arch/aarch64/include/asm/siginfo.h | 24 +
    arch/aarch64/include/asm/signal.h | 25 +
    arch/aarch64/include/asm/signal32.h | 55 +
    arch/aarch64/include/asm/smp.h | 70 ++
    arch/aarch64/include/asm/sparsemem.h | 25 +
    arch/aarch64/include/asm/spinlock.h | 200 ++++
    arch/aarch64/include/asm/spinlock_types.h | 39 +
    arch/aarch64/include/asm/stacktrace.h | 30 +
    arch/aarch64/include/asm/stat.h | 64 ++
    arch/aarch64/include/asm/statfs.h | 24 +
    arch/aarch64/include/asm/syscall.h | 102 ++
    arch/aarch64/include/asm/syscalls.h | 41 +
    arch/aarch64/include/asm/system_misc.h | 59 +
    arch/aarch64/include/asm/thread_info.h | 125 ++
    arch/aarch64/include/asm/timex.h | 33 +
    arch/aarch64/include/asm/tlb.h | 191 ++++
    arch/aarch64/include/asm/tlbflush.h | 124 ++
    arch/aarch64/include/asm/traps.h | 31 +
    arch/aarch64/include/asm/uaccess.h | 378 +++++++
    arch/aarch64/include/asm/ucontext.h | 31 +
    arch/aarch64/include/asm/unistd.h | 28 +
    arch/aarch64/include/asm/unistd32.h | 759 +++++++++++++
    arch/aarch64/include/asm/vdso.h | 42 +
    arch/aarch64/include/asm/vdso_datapage.h | 44 +
    arch/aarch64/kernel/.gitignore | 1 +
    arch/aarch64/kernel/Makefile | 27 +
    arch/aarch64/kernel/aarch64ksyms.c | 56 +
    arch/aarch64/kernel/asm-offsets.c | 109 ++
    arch/aarch64/kernel/debug-monitors.c | 289 +++++
    arch/aarch64/kernel/elf.c | 42 +
    arch/aarch64/kernel/entry-fpsimd.S | 81 ++
    arch/aarch64/kernel/entry.S | 696 ++++++++++++
    arch/aarch64/kernel/fpsimd.c | 107 ++
    arch/aarch64/kernel/head.S | 555 +++++++++
    arch/aarch64/kernel/hw_breakpoint.c | 881 +++++++++++++++
    arch/aarch64/kernel/io.c | 65 ++
    arch/aarch64/kernel/irq.c | 85 ++
    arch/aarch64/kernel/kuser32.S | 78 ++
    arch/aarch64/kernel/module.c | 457 ++++++++
    arch/aarch64/kernel/perf_event.c | 1369 +++++++++++++++++++++++
    arch/aarch64/kernel/process.c | 417 +++++++
    arch/aarch64/kernel/ptrace.c | 835 ++++++++++++++
    arch/aarch64/kernel/setup.c | 419 +++++++
    arch/aarch64/kernel/signal.c | 432 +++++++
    arch/aarch64/kernel/signal32.c | 868 ++++++++++++++
    arch/aarch64/kernel/smp.c | 471 ++++++++
    arch/aarch64/kernel/stacktrace.c | 128 +++
    arch/aarch64/kernel/sys.c | 139 +++
    arch/aarch64/kernel/sys32.S | 284 +++++
    arch/aarch64/kernel/sys_compat.c | 178 +++
    arch/aarch64/kernel/time.c | 66 ++
    arch/aarch64/kernel/traps.c | 371 ++++++
    arch/aarch64/kernel/vdso.c | 262 +++++
    arch/aarch64/kernel/vdso/.gitignore | 2 +
    arch/aarch64/kernel/vdso/Makefile | 63 +
    arch/aarch64/kernel/vdso/gen_vdso_offsets.sh | 15 +
    arch/aarch64/kernel/vdso/gettimeofday.S | 243 ++++
    arch/aarch64/kernel/vdso/note.S | 29 +
    arch/aarch64/kernel/vdso/sigreturn.S | 38 +
    arch/aarch64/kernel/vdso/vdso.S | 34 +
    arch/aarch64/kernel/vdso/vdso.lds.S | 101 ++
    arch/aarch64/kernel/vmlinux.lds.S | 146 +++
    arch/aarch64/lib/Makefile | 5 +
    arch/aarch64/lib/bitops.c | 27 +
    arch/aarch64/lib/clear_page.S | 40 +
    arch/aarch64/lib/clear_user.S | 59 +
    arch/aarch64/lib/copy_from_user.S | 67 ++
    arch/aarch64/lib/copy_in_user.S | 64 ++
    arch/aarch64/lib/copy_page.S | 47 +
    arch/aarch64/lib/copy_to_user.S | 62 +
    arch/aarch64/lib/delay.c | 56 +
    arch/aarch64/lib/getuser.S | 76 ++
    arch/aarch64/lib/putuser.S | 74 ++
    arch/aarch64/lib/strncpy_from_user.S | 51 +
    arch/aarch64/lib/strnlen_user.S | 48 +
    arch/aarch64/mm/Kconfig | 5 +
    arch/aarch64/mm/Makefile | 6 +
    arch/aarch64/mm/cache.S | 280 +++++
    arch/aarch64/mm/context.c | 160 +++
    arch/aarch64/mm/copypage.c | 35 +
    arch/aarch64/mm/dma-mapping.c | 209 ++++
    arch/aarch64/mm/extable.c | 17 +
    arch/aarch64/mm/fault.c | 537 +++++++++
    arch/aarch64/mm/flush.c | 133 +++
    arch/aarch64/mm/init.c | 575 ++++++++++
    arch/aarch64/mm/ioremap.c | 102 ++
    arch/aarch64/mm/mm.h | 15 +
    arch/aarch64/mm/mmap.c | 145 +++
    arch/aarch64/mm/mmu.c | 464 ++++++++
    arch/aarch64/mm/pgd.c | 50 +
    arch/aarch64/mm/proc-macros.S | 56 +
    arch/aarch64/mm/proc-syms.c | 32 +
    arch/aarch64/mm/proc.S | 194 ++++
    arch/aarch64/mm/tlb.S | 72 ++
    arch/arm/include/asm/atomic.h | 1 +
    arch/mips/include/asm/atomic.h | 1 +
    arch/powerpc/include/asm/atomic.h | 1 +
    arch/s390/include/asm/atomic.h | 1 +
    arch/sparc/kernel/sys_sparc_64.c | 2 +-
    arch/x86/include/asm/atomic64_32.h | 1 +
    arch/x86/include/asm/atomic64_64.h | 1 +
    arch/xtensa/kernel/syscall.c | 2 +-
    drivers/clocksource/Kconfig | 5 +
    drivers/clocksource/Makefile | 3 +-
    drivers/clocksource/arm_generic.c | 310 +++++
    drivers/of/fdt.c | 28 +
    fs/stat.c | 4 +-
    include/clocksource/arm_generic.h | 22 +
    include/linux/compat.h | 5 +-
    include/linux/of_fdt.h | 1 +
    include/linux/shm.h | 6 +-
    init/Kconfig | 3 +-
    ipc/compat.c | 18 +-
    ipc/shm.c | 9 +-
    ipc/syscall.c | 2 +-
    lib/Kconfig.debug | 6 +-
    lib/atomic64_test.c | 3 +-
    tools/perf/perf.h | 6 +
    184 files changed, 22781 insertions(+), 26 deletions(-)



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