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SubjectRe: [PATCH 0/5] ARM64: Uprobe support added
Hi Will/Catalin,

Do you have any specific comment for this patch set?

~Pratyush

[1] https://lkml.org/lkml/2016/8/22/69

On 02/08/2016:11:00:04 AM, Pratyush Anand wrote:
> ARM64 kprobe support is lying in torvalds/linux.git:master now. Therefore
> sending my uprobe patches which were dependent on decode-insn code of kprobe
> patches.
>
> Unit tests for following have been done so far and they have been found
> working.
> 1. Step-able instructions, like sub, ldr, add etc.
> 2. Simulation-able like ret, cbnz, cbz etc.
> 3. uretprobe
> 4. Reject-able instructions like sev, wfe etc.
> 5. trapped and abort xol path
> 6. probe at unaligned user address.
> 7. longjump test cases
>
> Currently it does not support aarch32 instruction probing.
>
> RFC patches were sent long back, and all review comments for RFCs have been
> incorporated. RFCs were here: https://lwn.net/Articles/648514/
>
> Pratyush Anand (5):
> arm64: kprobe: protect/rename few definitions to be reused by uprobe
> arm64: kgdb_step_brk_fn: ignore other's exception
> arm64: Handle TRAP_HWBRKPT for user mode as well
> arm64: Handle TRAP_BRKPT for user mode as well
> arm64: Add uprobe support
>
> arch/arm64/Kconfig | 3 +
> arch/arm64/include/asm/debug-monitors.h | 3 +
> arch/arm64/include/asm/probes.h | 23 ++--
> arch/arm64/include/asm/ptrace.h | 8 ++
> arch/arm64/include/asm/thread_info.h | 5 +-
> arch/arm64/include/asm/uprobes.h | 37 ++++++
> arch/arm64/kernel/debug-monitors.c | 40 +++---
> arch/arm64/kernel/entry.S | 6 +-
> arch/arm64/kernel/kgdb.c | 3 +
> arch/arm64/kernel/probes/Makefile | 2 +
> arch/arm64/kernel/probes/decode-insn.c | 31 ++---
> arch/arm64/kernel/probes/decode-insn.h | 8 +-
> arch/arm64/kernel/probes/kprobes.c | 36 ++---
> arch/arm64/kernel/probes/uprobes.c | 227 ++++++++++++++++++++++++++++++++
> arch/arm64/kernel/signal.c | 4 +-
> arch/arm64/mm/flush.c | 6 +
> 16 files changed, 378 insertions(+), 64 deletions(-)
> create mode 100644 arch/arm64/include/asm/uprobes.h
> create mode 100644 arch/arm64/kernel/probes/uprobes.c
>
> --
> 2.5.5

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