At first, thank you for updating this series! :)
On 2015/06/16 4:07, David Long wrote:
From: "David A. Long" <dave.long@xxxxxxxxxx>
This patchset is heavily based on Sandeepa Prabhu's ARM v8 kprobes patches,
first seen in October 2013. This version attempts to address concerns raised by
reviewers and also fixes problems discovered during testing.
This patchset adds support for kernel probes(kprobes), jump probes(jprobes)
and return probes(kretprobes) support for ARM64.
The kprobes mechanism makes use of software breakpoint and single stepping
support available in the ARM v8 kernel.
The is patch depends on:
[PATCH 1/2] Move the pt_regs_offset struct definition from arch to common include file
[PATCH 2/2] Consolidate redundant register/stack access code
Hmm, what are those patches ? Would they be not merged to upstream yet?
If so, where I can get them from? I'd like to know the actual url for them.
Changes since v6 include:
1) New trampoline code from Will Cohen fixes the occasional failure seen
when processing kretprobes by replacing the software breakpoint with
assembly code to implement the return to the original execution stream.
Yeah, that's what we need :)
2) Changed ip0, ip1, fp, and lr to plain numbered registers for purposes
of recognizing them as an ascii string in the stack/reg access code.
3) Removed orig_x0.
4) Moved ARM_x* defines from arch/arm64/include/uapi/asm/ptrace.h to
David A. Long (2):
arm64: Add HAVE_REGS_AND_STACK_ACCESS_API feature
arm64: Add more test functions to insn.c
Sandeepa Prabhu (4):
arm64: Kprobes with single stepping support
arm64: kprobes instruction simulation support
arm64: Add kernel return probes support (kretprobes)
kprobes: Add arm64 case in kprobe example module
William Cohen (1):
arm64: Add trampoline code for kretprobes
arch/arm64/Kconfig | 3 +
arch/arm64/include/asm/debug-monitors.h | 5 +
arch/arm64/include/asm/insn.h | 18 +
arch/arm64/include/asm/kprobes.h | 63 +++
arch/arm64/include/asm/probes.h | 50 +++
arch/arm64/include/asm/ptrace.h | 28 +-
arch/arm64/kernel/Makefile | 3 +
arch/arm64/kernel/debug-monitors.c | 35 +-
arch/arm64/kernel/insn.c | 28 ++
arch/arm64/kernel/kprobes-arm64.c | 166 ++++++++
arch/arm64/kernel/kprobes-arm64.h | 71 ++++
arch/arm64/kernel/kprobes.c | 665 +++++++++++++++++++++++++++++++
arch/arm64/kernel/kprobes.h | 24 ++
arch/arm64/kernel/probes-condn-check.c | 122 ++++++
arch/arm64/kernel/probes-simulate-insn.c | 174 ++++++++
arch/arm64/kernel/probes-simulate-insn.h | 33 ++
arch/arm64/kernel/ptrace.c | 77 ++++
arch/arm64/kernel/vmlinux.lds.S | 1 +
arch/arm64/mm/fault.c | 25 ++
samples/kprobes/kprobe_example.c | 8 +
20 files changed, 1588 insertions(+), 11 deletions(-)
create mode 100644 arch/arm64/include/asm/kprobes.h
create mode 100644 arch/arm64/include/asm/probes.h
create mode 100644 arch/arm64/kernel/kprobes-arm64.c
create mode 100644 arch/arm64/kernel/kprobes-arm64.h
create mode 100644 arch/arm64/kernel/kprobes.c
create mode 100644 arch/arm64/kernel/kprobes.h
create mode 100644 arch/arm64/kernel/probes-condn-check.c
create mode 100644 arch/arm64/kernel/probes-simulate-insn.c
create mode 100644 arch/arm64/kernel/probes-simulate-insn.h