linux-kernel - Re: [PATCH v5 0/6] Add uprobes support for LoongArch

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Date:   Wed, 7 Jun 2023 16:52:05 +0800
From:   Huacai Chen <chenhuacai@...nel.org>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Jeff Xie <xiehuan09@...il.com>
Cc:     loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org,
        loongson-kernel@...ts.loongnix.cn
Subject: Re: [PATCH v5 0/6] Add uprobes support for LoongArch

Hi, Jeff,

I queued this series at
https://github.com/chenhuacai/linux/commits/loongarch-next, could you
please test it when you have time? Thanks.

Huacai

On Mon, Jun 5, 2023 at 2:39 PM Tiezhu Yang <yangtiezhu@...ngson.cn> wrote:
>
> v5:
>   -- Rebased on 6.4rc5
>   -- Like arm64, add user_enable_single_step() in arch_uprobe_pre_xol(),
>      add user_disable_single_step() in arch_uprobe_{post,abort}_xol(),
>      suggested by Jeff and Huacai offline
>
> v4:
>   -- Rebased on 6.4rc1
>   -- Fix problem about "perf probe -x /lib64/libc.so.6 malloc"
>
> v3:
>   -- Check atomic instructions in insns_not_supported()
>   -- Remove five DIE_* definitions in kdebug.h
>
> v2:
>   -- Move the functions to inst.c in patch #1
>   -- Pass around union for insns_not_supported(),
>      insns_need_simulation() and arch_simulate_insn()
>
> v1:
>   -- Split the RFC patch #2 into two patches
>   -- Use larch_insn_gen_break() to generate break insns
>      for kprobes and uprobes
>   -- Pass around instruction word instead of union for
>      insns_not_supported(), insns_need_simulation() and
>      arch_simulate_insn() to avoid type conversion for callers
>   -- Add a simple test case for uprobes in the commit message
>
> Tiezhu Yang (6):
>   LoongArch: Move three functions from kprobes.c to inst.c
>   LoongArch: Add larch_insn_gen_break() to generate break insns
>   LoongArch: Use larch_insn_gen_break() for kprobes
>   LoongArch: Add uprobes support
>   LoongArch: Check atomic instructions in insns_not_supported()
>   LoongArch: Remove five DIE_* definitions in kdebug.h
>
>  arch/loongarch/Kconfig               |   3 +
>  arch/loongarch/include/asm/inst.h    |  42 ++++++++++
>  arch/loongarch/include/asm/kdebug.h  |   5 --
>  arch/loongarch/include/asm/kprobes.h |   2 +-
>  arch/loongarch/include/asm/uprobes.h |  35 ++++++++
>  arch/loongarch/kernel/Makefile       |   1 +
>  arch/loongarch/kernel/inst.c         |  54 +++++++++++++
>  arch/loongarch/kernel/kprobes.c      |  75 ++++-------------
>  arch/loongarch/kernel/traps.c        |   9 +--
>  arch/loongarch/kernel/uprobes.c      | 152 +++++++++++++++++++++++++++++++++++
>  10 files changed, 306 insertions(+), 72 deletions(-)
>  create mode 100644 arch/loongarch/include/asm/uprobes.h
>  create mode 100644 arch/loongarch/kernel/uprobes.c
>
> --
> 2.1.0
>