[PATCH v7 resend 00/20] ILP32 for ARM64

Yury Norov
2017-04-10T19:47:40Z

Hi Catalin,

According to latest plans figured out on Linaro Connect, ILP32 should
be taken in 4.12 merge window. The window will be opened in less than
a month, so I'd like to remind it to you, and ask if you have any
questions/requests related to ILP32. Is it still realistic idea to take
patches in 4.12?

This is the rebase of ILP32 on latest linux-next:
https://github.com/norov/linux/tree/ilp32-20170410

And glibc that I use for testing:
https://github.com/norov/glibc/commits/dev9

Yury

On Thu, Mar 02, 2017 at 12:49:08AM +0530, Yury Norov wrote:
> This series enables aarch64 with ilp32 mode.
>
> As supporting work, it introduces ARCH_32BIT_OFF_T configuration
> option that is enabled for existing 32-bit architectures but disabled
> for new arches (so 64-bit off_t is is used by new userspace). Also it
> deprecates getrlimit and setrlimit syscalls prior to prlimit64.
>
> This version is based on linux-next from 2017-03-01. It works with
> glibc-2.25, and tested with LTP, glibc testsuite, trinity, lmbench,
> CPUSpec.
>
> Patches 1, 2, 3 and 8 are general, and may be applied separately.
>
> This is the rebase of v7 - no major changes has been made.
>
> Kernel and GLIBC trees:
> https://github.com/norov/linux/tree/ilp32-20170301
> https://github.com/norov/glibc/tree/dev9
>
> (GLIBC patches are managed by Steve Ellcey, so my tree is only for
> reference.)
>
> Changes:
> v3: https://lkml.org/lkml/2014/9/3/704
> v4: https://lkml.org/lkml/2015/4/13/691
> v5: https://lkml.org/lkml/2015/9/29/911
> v6: https://lkml.org/lkml/2016/5/23/661
> v7: RFC nowrap: https://lkml.org/lkml/2016/6/17/990
> v7: RFC2 nowrap: https://lkml.org/lkml/2016/8/17/245
> v7: RFC3 nowrap: https://lkml.org/lkml/2016/10/21/883
> v7: https://lkml.org/lkml/2017/1/9/213
> v7: Resend: fixed couple of typos, rebased on next-20170301
>
> Andrew Pinski (6):
> arm64: rename COMPAT to AARCH32_EL0 in Kconfig
> arm64: ensure the kernel is compiled for LP64
> arm64:uapi: set __BITS_PER_LONG correctly for ILP32 and LP64
> arm64: ilp32: add sys_ilp32.c and a separate table (in entry.S) to use
> it
> arm64: ilp32: introduce ilp32-specific handlers for sigframe and
> ucontext
> arm64:ilp32: add ARM64_ILP32 to Kconfig
>
> Philipp Tomsich (1):
> arm64:ilp32: add vdso-ilp32 and use for signal return
>
> Yury Norov (13):
> compat ABI: use non-compat openat and open_by_handle_at variants
> 32-bit ABI: introduce ARCH_32BIT_OFF_T config option
> asm-generic: Drop getrlimit and setrlimit syscalls from default list
> arm64: ilp32: add documentation on the ILP32 ABI for ARM64
> thread: move thread bits accessors to separated file
> arm64: introduce is_a32_task and is_a32_thread (for AArch32 compat)
> arm64: ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64
> arm64: introduce binfmt_elf32.c
> arm64: ilp32: introduce binfmt_ilp32.c
> arm64: ilp32: share aarch32 syscall handlers
> arm64: signal: share lp64 signal routines to ilp32
> arm64: signal32: move ilp32 and aarch32 common code to separated file
> arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32
>
> Documentation/arm64/ilp32.txt | 45 +++++++
> arch/Kconfig | 4 +
> arch/arc/Kconfig | 1 +
> arch/arc/include/uapi/asm/unistd.h | 1 +
> arch/arm/Kconfig | 1 +
> arch/arm64/Kconfig | 19 ++-
> arch/arm64/Makefile | 5 +
> arch/arm64/include/asm/compat.h | 19 +--
> arch/arm64/include/asm/elf.h | 32 ++---
> arch/arm64/include/asm/fpsimd.h | 2 +-
> arch/arm64/include/asm/ftrace.h | 2 +-
> arch/arm64/include/asm/hwcap.h | 6 +-
> arch/arm64/include/asm/is_compat.h | 90 ++++++++++++++
> arch/arm64/include/asm/memory.h | 5 +-
> arch/arm64/include/asm/processor.h | 11 +-
> arch/arm64/include/asm/ptrace.h | 2 +-
> arch/arm64/include/asm/seccomp.h | 2 +-
> arch/arm64/include/asm/signal32.h | 9 +-
> arch/arm64/include/asm/signal32_common.h | 27 ++++
> arch/arm64/include/asm/signal_common.h | 33 +++++
> arch/arm64/include/asm/signal_ilp32.h | 38 ++++++
> arch/arm64/include/asm/syscall.h | 2 +-
> arch/arm64/include/asm/thread_info.h | 4 +-
> arch/arm64/include/asm/unistd.h | 8 +-
> arch/arm64/include/asm/vdso.h | 6 +
> arch/arm64/include/uapi/asm/bitsperlong.h | 9 +-
> arch/arm64/include/uapi/asm/unistd.h | 13 ++
> arch/arm64/kernel/Makefile | 18 ++-
> arch/arm64/kernel/asm-offsets.c | 9 +-
> arch/arm64/kernel/binfmt_elf32.c | 32 +++++
> arch/arm64/kernel/binfmt_ilp32.c | 85 +++++++++++++
> arch/arm64/kernel/cpufeature.c | 8 +-
> arch/arm64/kernel/cpuinfo.c | 20 +--
> arch/arm64/kernel/entry.S | 34 +++++-
> arch/arm64/kernel/entry32.S | 80 ------------
> arch/arm64/kernel/entry32_common.S | 107 ++++++++++++++++
> arch/arm64/kernel/entry_ilp32.S | 22 ++++
> arch/arm64/kernel/head.S | 2 +-
> arch/arm64/kernel/hw_breakpoint.c | 8 +-
> arch/arm64/kernel/perf_regs.c | 2 +-
> arch/arm64/kernel/process.c | 7 +-
> arch/arm64/kernel/ptrace.c | 80 ++++++++++--
> arch/arm64/kernel/signal.c | 102 ++++++++++------
> arch/arm64/kernel/signal32.c | 107 ----------------
> arch/arm64/kernel/signal32_common.c | 135 ++++++++++++++++++++
> arch/arm64/kernel/signal_ilp32.c | 170 ++++++++++++++++++++++++++
> arch/arm64/kernel/sys_ilp32.c | 100 +++++++++++++++
> arch/arm64/kernel/traps.c | 5 +-
> arch/arm64/kernel/vdso-ilp32/.gitignore | 2 +
> arch/arm64/kernel/vdso-ilp32/Makefile | 74 +++++++++++
> arch/arm64/kernel/vdso-ilp32/vdso-ilp32.S | 33 +++++
> arch/arm64/kernel/vdso-ilp32/vdso-ilp32.lds.S | 95 ++++++++++++++
> arch/arm64/kernel/vdso.c | 69 +++++++++--
> arch/arm64/kernel/vdso/gettimeofday.S | 20 ++-
> arch/arm64/kernel/vdso/vdso.S | 6 +-
> arch/blackfin/Kconfig | 1 +
> arch/c6x/include/uapi/asm/unistd.h | 1 +
> arch/cris/Kconfig | 1 +
> arch/frv/Kconfig | 1 +
> arch/h8300/Kconfig | 1 +
> arch/h8300/include/uapi/asm/unistd.h | 1 +
> arch/hexagon/Kconfig | 1 +
> arch/hexagon/include/uapi/asm/unistd.h | 1 +
> arch/m32r/Kconfig | 1 +
> arch/m68k/Kconfig | 1 +
> arch/metag/Kconfig | 1 +
> arch/metag/include/uapi/asm/unistd.h | 1 +
> arch/microblaze/Kconfig | 1 +
> arch/mips/Kconfig | 1 +
> arch/mn10300/Kconfig | 1 +
> arch/nios2/Kconfig | 1 +
> arch/nios2/include/uapi/asm/unistd.h | 1 +
> arch/openrisc/Kconfig | 1 +
> arch/openrisc/include/uapi/asm/unistd.h | 1 +
> arch/parisc/Kconfig | 1 +
> arch/powerpc/Kconfig | 1 +
> arch/score/Kconfig | 1 +
> arch/score/include/uapi/asm/unistd.h | 1 +
> arch/sh/Kconfig | 1 +
> arch/sparc/Kconfig | 1 +
> arch/tile/Kconfig | 1 +
> arch/tile/include/uapi/asm/unistd.h | 1 +
> arch/tile/kernel/compat.c | 3 +
> arch/unicore32/Kconfig | 1 +
> arch/unicore32/include/uapi/asm/unistd.h | 1 +
> arch/x86/Kconfig | 1 +
> arch/x86/um/Kconfig | 1 +
> arch/xtensa/Kconfig | 1 +
> drivers/clocksource/arm_arch_timer.c | 2 +-
> include/linux/fcntl.h | 2 +-
> include/linux/thread_bits.h | 63 ++++++++++
> include/linux/thread_info.h | 54 +-------
> include/uapi/asm-generic/unistd.h | 10 +-
> 93 files changed, 1586 insertions(+), 408 deletions(-)
> create mode 100644 Documentation/arm64/ilp32.txt
> create mode 100644 arch/arm64/include/asm/is_compat.h
> create mode 100644 arch/arm64/include/asm/signal32_common.h
> create mode 100644 arch/arm64/include/asm/signal_common.h
> create mode 100644 arch/arm64/include/asm/signal_ilp32.h
> create mode 100644 arch/arm64/kernel/binfmt_elf32.c
> create mode 100644 arch/arm64/kernel/binfmt_ilp32.c
> create mode 100644 arch/arm64/kernel/entry32_common.S
> create mode 100644 arch/arm64/kernel/entry_ilp32.S
> create mode 100644 arch/arm64/kernel/signal32_common.c
> create mode 100644 arch/arm64/kernel/signal_ilp32.c
> create mode 100644 arch/arm64/kernel/sys_ilp32.c
> create mode 100644 arch/arm64/kernel/vdso-ilp32/.gitignore
> create mode 100644 arch/arm64/kernel/vdso-ilp32/Makefile
> create mode 100644 arch/arm64/kernel/vdso-ilp32/vdso-ilp32.S
> create mode 100644 arch/arm64/kernel/vdso-ilp32/vdso-ilp32.lds.S
> create mode 100644 include/linux/thread_bits.h
>
> --
> 2.7.4