This is kind of like the 32-bit and compat code, except that I preserved the fast path this time. I was unable to measure any significant performance change on my laptop in the fast path.
Changes from v1: - Various tidying up. - Remove duplicate tables (folded in, so the fastpath table isn't in this set). - Rebased to 4.5-rc1 - Remove enter_from_user_mode stuff -- let's get the basics in first. Andy Lutomirski (10): selftests/x86: Extend Makefile to allow 64-bit-only tests selftests/x86: Add check_initial_reg_state x86/syscalls: Refactor syscalltbl.sh x86/syscalls: Remove __SYSCALL_COMMON and __SYSCALL_X32 x86/syscalls: Move compat syscall entry handling into syscalltbl.sh x86/syscalls: Add syscall entry qualifiers x86/entry/64: Always run ptregs-using syscalls on the slow path x86/entry/64: Call all native slow-path syscalls with full pt-regs x86/entry/64: Stop using int_ret_from_sys_call in ret_from_fork x86/entry/64: Migrate the 64-bit syscall slow path to C arch/x86/entry/common.c | 26 ++ arch/x86/entry/entry_64.S | 271 +++++++-------------- arch/x86/entry/syscall_32.c | 10 +- arch/x86/entry/syscall_64.c | 13 +- arch/x86/entry/syscalls/syscall_64.tbl | 18 +- arch/x86/entry/syscalls/syscalltbl.sh | 58 ++++- arch/x86/kernel/asm-offsets_32.c | 2 +- arch/x86/kernel/asm-offsets_64.c | 10 +- arch/x86/um/sys_call_table_32.c | 4 +- arch/x86/um/sys_call_table_64.c | 7 +- arch/x86/um/user-offsets.c | 6 +- tools/testing/selftests/x86/Makefile | 14 +- .../selftests/x86/check_initial_reg_state.c | 109 +++++++++ 13 files changed, 317 insertions(+), 231 deletions(-) create mode 100644 tools/testing/selftests/x86/check_initial_reg_state.c -- 2.5.0
