Hi,
This patchset evolved from the discussion in the thread[0][1]. When we
wanted to add PTRACE_SYSEMU support to ARM64, we thought instead of
duplicating what other architectures like x86 and powerpc have done,
let consolidate the existing support and move it to the core as there's
nothing arch specific in it.
v1->v2:
- added comment for empty statement after tracehook_report_syscall_entry
- dropped x86 change in syscall_slow_exit_work as I had ended
up changing logic unintentionally
- removed spurious change in powerpc moving user_exit()
Regards,
Sudeep
[0] https://patchwork.kernel.org/patch/10585505/
[1] https://patchwork.kernel.org/patch/10675237/
Sudeep Holla (6):
ptrace: move clearing of TIF_SYSCALL_EMU flag to core
ptrace: introduce ptrace_syscall_enter to consolidate PTRACE_SYSEMU handling
x86: clean up _TIF_SYSCALL_EMU handling using ptrace_syscall_enter hook
powerpc: use common ptrace_syscall_enter hook to handle _TIF_SYSCALL_EMU
arm64: add PTRACE_SYSEMU{,SINGLESTEP} definations to uapi headers
arm64: ptrace: add support for syscall emulation
arch/arm64/include/asm/thread_info.h | 5 ++-
arch/arm64/include/uapi/asm/ptrace.h | 3 ++
arch/arm64/kernel/ptrace.c | 3 ++
arch/powerpc/kernel/ptrace.c | 49 ++++++++++++----------------
arch/x86/entry/common.c | 12 ++-----
arch/x86/kernel/ptrace.c | 3 --
include/linux/ptrace.h | 1 +
kernel/ptrace.c | 26 +++++++++++++++
8 files changed, 61 insertions(+), 41 deletions(-)
--
2.17.1
