--- v7
+++ v6
@@ -1,164 +1,95 @@
-This series enables aarch64 with ilp32 mode, and as supporting work,
-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).
-
-This version is based on kernel v4.7-rc3.
-It works with glibc-2.23, and tested with LTP.
-
-This is RFC because there is no solid understanding what type of registers
-top-halves delousing we prefer. In this patchset, w0-w7 are cleared for each
-syscall in assembler entry. The alternative approach is in introducing compat
-wrappers which is little faster for natively routed syscalls (~2.6% for syscall
-with no payload) but much more complicated.
+V6 addresses comments collected for v5 series.
+This is RFC because LTP tests fail (63 of 779).
+But I don't expect that major changes are required
+to fix regressions.
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:
- - wrappers removed, unconditional register delousing is introduced.
- - ino_t, off_t etc are turned to 64-bit.
- - added is_compat_thread(),
- - fixed ilp32 ELF_PLATFORM MACRO,
- - fixed ilp32 ELF_DYN_BASE,
- - ptrace redirected to compat version.
- - stat, statfs - related syscalls are redirected to native handlers.
- - elf_greg_t and elf_gregset_t types are taken from lp64.
- - Documentation updated.
-Links:
-This series: https://github.com/norov/linux/commits/ilp32-nowrap
-v7 with wrappers: https://github.com/norov/linux/commits/ilp32
-glibc (dirty): https://github.com/norov/glibc/commits/ilp32-nowrap
-glibc with wrappers: https://github.com/norov/glibc/commits/ilp32-dev
+v6:
+ - time_t, __kenel_off_t and other types turned to be 32-bit
+ for compatibility reasons (after v5 discussion);
+ - related changes applied to ILP32 syscall table and handlers;
+ - ILP32 VDSO code excluded. It's not mandatory, and caused questions
+ during review process. We definitely make sure we will follow up
+ with a VDSO later on because it is needed for performance reasons;
+ - fixed build issues with different combinations of AARCH32 / ILP32
+ enabling in config;
+ - ILP32 TLS bug fixed;
+ - entry32-common.S introduced to hold wrappers needed for both ILP32
+ and AARCH32_EL0;
+ - documentation updated according to latest changes;
+ - rebased to the current head;
+ - coding style re-checked.
-Andrew Pinski (6):
+Andrew Pinski (13):
arm64: ensure the kernel is compiled for LP64
arm64: rename COMPAT to AARCH32_EL0 in Kconfig
- 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: change some CONFIG_COMPAT over to use CONFIG_AARCH32_EL0
+ instead
+ arm64:ilp32: share signal structures between ILP32 and LP64 ABIs
+ 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:ilp32: share HWCAP between LP64 and ILP32
+ arm64:ilp32 use the native LP64 'start_thread' for ILP32 threads
+ arm64:ilp32: support core dump generation for ILP32
+ ptrace: Allow compat to use the native siginfo
+ arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use
+ it
+ arm64:ilp32: use the native siginfo instead of the compat siginfo
arm64:ilp32: add ARM64_ILP32 to Kconfig
-Philipp Tomsich (1):
- arm64:ilp32: add vdso-ilp32 and use for signal return
+Jan Dakinevich (1):
+ ilp32: common 32-bit wrappers
-Yury Norov (12):
- compat ABI: use non-compat openat and open_by_handle_at variants
- 32-bit ABI: introduce ARCH_32BIT_OFF_T config option
- 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: ptrace: handle ptrace_request differently for aarch32 and ilp32
- 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
+Philipp Tomsich (2):
+ arm64:ilp32: add documentation on the ILP32 ABI for ARM64
+ arm64:ilp32: change COMPAT_ELF_PLATFORM to report a a subplatform for
+ ILP32
- Documentation/arm64/ilp32.txt | 54 +++++++
- arch/Kconfig | 4 +
- arch/arc/Kconfig | 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 | 29 +++-
- 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/signal32.h | 6 +-
- arch/arm64/include/asm/signal32_common.h | 25 ++++
- arch/arm64/include/asm/signal_common.h | 33 +++++
- arch/arm64/include/asm/signal_ilp32.h | 34 +++++
- arch/arm64/include/asm/syscall.h | 2 +-
- arch/arm64/include/asm/thread_info.h | 4 +-
- arch/arm64/include/asm/unistd.h | 6 +-
- arch/arm64/include/asm/unistd32.h | 2 +-
- arch/arm64/include/asm/vdso.h | 6 +
- arch/arm64/include/uapi/asm/bitsperlong.h | 9 +-
- arch/arm64/kernel/Makefile | 14 +-
- arch/arm64/kernel/asm-offsets.c | 9 +-
- arch/arm64/kernel/binfmt_elf32.c | 31 ++++
- arch/arm64/kernel/binfmt_ilp32.c | 96 +++++++++++++
- arch/arm64/kernel/cpufeature.c | 8 +-
- arch/arm64/kernel/cpuinfo.c | 20 +--
- arch/arm64/kernel/entry.S | 35 ++++-
- arch/arm64/kernel/entry32.S | 65 ---------
- arch/arm64/kernel/entry32_common.S | 93 ++++++++++++
- arch/arm64/kernel/entry_ilp32.S | 23 +++
- arch/arm64/kernel/head.S | 2 +-
- arch/arm64/kernel/hw_breakpoint.c | 10 +-
- arch/arm64/kernel/perf_regs.c | 2 +-
- arch/arm64/kernel/process.c | 7 +-
- arch/arm64/kernel/ptrace.c | 67 +++++++--
- arch/arm64/kernel/signal.c | 102 +++++++++-----
- arch/arm64/kernel/signal32.c | 85 -----------
- arch/arm64/kernel/signal32_common.c | 115 +++++++++++++++
- arch/arm64/kernel/signal_ilp32.c | 194 ++++++++++++++++++++++++++
- arch/arm64/kernel/sys32.c | 1 +
- arch/arm64/kernel/sys_ilp32.c | 84 +++++++++++
- 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 | 65 +++++++--
- arch/arm64/kernel/vdso/gettimeofday.S | 20 ++-
- arch/blackfin/Kconfig | 1 +
- arch/cris/Kconfig | 1 +
- arch/frv/Kconfig | 1 +
- arch/h8300/Kconfig | 1 +
- arch/hexagon/Kconfig | 1 +
- arch/m32r/Kconfig | 1 +
- arch/m68k/Kconfig | 1 +
- arch/metag/Kconfig | 1 +
- arch/microblaze/Kconfig | 1 +
- arch/mips/Kconfig | 1 +
- arch/mn10300/Kconfig | 1 +
- arch/nios2/Kconfig | 1 +
- arch/openrisc/Kconfig | 1 +
- arch/parisc/Kconfig | 1 +
- arch/powerpc/Kconfig | 1 +
- arch/score/Kconfig | 1 +
- arch/sh/Kconfig | 1 +
- arch/sparc/Kconfig | 1 +
- arch/tile/Kconfig | 1 +
- arch/tile/kernel/compat.c | 3 +
- arch/unicore32/Kconfig | 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/ptrace.h | 6 +
- include/linux/thread_bits.h | 55 ++++++++
- include/linux/thread_info.h | 44 +-----
- kernel/ptrace.c | 10 +-
- 83 files changed, 1536 insertions(+), 343 deletions(-)
+Yury Norov (1):
+ aarch64: ilp32: use generic stat64 structure
+
+ Documentation/arm64/ilp32.txt | 55 +++++++
+ arch/arm64/Kconfig | 14 +-
+ arch/arm64/Makefile | 5 +
+ arch/arm64/include/asm/compat.h | 70 ++++++++-
+ arch/arm64/include/asm/elf.h | 105 +++++++++++--
+ arch/arm64/include/asm/fpsimd.h | 2 +-
+ arch/arm64/include/asm/hwcap.h | 12 +-
+ arch/arm64/include/asm/memory.h | 2 +-
+ arch/arm64/include/asm/processor.h | 18 ++-
+ arch/arm64/include/asm/ptrace.h | 2 +-
+ arch/arm64/include/asm/signal32.h | 19 +++
+ arch/arm64/include/asm/stat.h | 2 +
+ arch/arm64/include/asm/thread_info.h | 3 +-
+ arch/arm64/include/asm/unistd.h | 11 +-
+ arch/arm64/include/uapi/asm/siginfo.h | 21 +++
+ arch/arm64/include/uapi/asm/signal.h | 31 ++++
+ arch/arm64/kernel/Makefile | 4 +-
+ arch/arm64/kernel/asm-offsets.c | 2 +-
+ arch/arm64/kernel/entry.S | 18 ++-
+ arch/arm64/kernel/entry32-common.S | 37 +++++
+ arch/arm64/kernel/entry32.S | 29 ----
+ arch/arm64/kernel/head.S | 2 +-
+ arch/arm64/kernel/hw_breakpoint.c | 7 +-
+ arch/arm64/kernel/perf_regs.c | 2 +-
+ arch/arm64/kernel/process.c | 4 +-
+ arch/arm64/kernel/ptrace.c | 47 +++---
+ arch/arm64/kernel/signal.c | 21 ++-
+ arch/arm64/kernel/sys_ilp32.c | 278 ++++++++++++++++++++++++++++++++++
+ arch/arm64/kernel/traps.c | 4 +-
+ arch/arm64/kernel/vdso.c | 12 +-
+ include/linux/compat.h | 4 +
+ include/uapi/asm-generic/siginfo.h | 17 ++-
+ include/uapi/asm-generic/signal.h | 27 +++-
+ include/uapi/asm-generic/stat.h | 8 +-
+ kernel/ptrace.c | 24 ++-
+ 35 files changed, 806 insertions(+), 113 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/entry32-common.S
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
+2.1.4