Messages in this thread | | | From | Yury Norov <> | Subject | [RFC2 PATCH v6 00/19] ILP32 for ARM64 | Date | Wed, 18 Nov 2015 00:16:40 +0300 |
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------8<----- Colleagues, I'm gonna to send it to list. Please, take a look. ------8<-----
This is still RFC because ~20 tests still fail, and because it's based on 4.3 kernel version, and some work is needed to rebase on 4.4. I'd preffer to do it later.
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: - 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; - ILP32 syscall table turned around.
Testing is performed using LTP with scenario 'ltplite'. Tested on QEMU + vanilla defconfig kernel. Regressions are mostly related to core dump genereation, readdir(), and futex(). Some tests fail both in ILP32, and LP64.
The full regression table is: ILP32 LP64
float_bessel FAIL 134 PASSED 0 float_exp_log FAIL 134 PASSED 0 float_iperb FAIL 134 PASSED 0 float_power FAIL 134 PASSED 0 float_trigo FAIL 134 PASSED 0 abort01 FAIL 2 FAIL 2 fcntl14 FAIL 2 FAIL 2 kill11 FAIL 2 FAIL 2 mmap16 FAIL 6 PASSED 0 open12 FAIL 2 PASSED 0 pause01 PASSED 0 FAIL 9 pipe07 FAIL 2 PASSED 0 readdir01 FAIL 1 PASSED 0 rename11 FAIL 2 PASSED 0 rmdir02 FAIL 2 PASSED 0 setregid02 FAIL 1 FAIL 1 settimeofday01 FAIL 1 FAIL 1 umount2_01 FAIL 2 PASSED 0 umount2_02 FAIL 2 PASSED 0 umount2_03 FAIL 2 PASSED 0 utime06 FAIL 2 PASSED 0
Kernel with this patchset, and corresponding version of glibc is here: https://github.com/norov/
Andrew Pinski (14): arm64: ensure the kernel is compiled for LP64 arm64: rename COMPAT to AARCH32_EL0 in Kconfig arm64: change some CONFIG_COMPAT over to use CONFIG_AARCH32_EL0 instead arm64:uapi: set __BITS_PER_LONG correctly for ILP32 and LP64 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
Jan Dakinevich (2): ilp32: common 32-bit wrappers arm64: ilp32: force IPC_64 in msgctl, shmctl, semctl
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
Yury Norov (1): aarch64: ilp32: use generic stat64 structure
Documentation/arm64/ilp32.txt | 47 +++++++ arch/arm64/Kconfig | 12 ++ 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/bitsperlong.h | 9 +- 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 | 223 ++++++++++++++++++++++++++++++ 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 +++- kernel/ptrace.c | 24 +++- 35 files changed, 745 insertions(+), 110 deletions(-) create mode 100644 Documentation/arm64/ilp32.txt create mode 100644 arch/arm64/kernel/entry32-common.S create mode 100644 arch/arm64/kernel/sys_ilp32.c
-- 2.1.4
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