linux-kernel - Re: [PATCH v5 9/9] riscv/kprobe: Search free registers from unused caller-saved ones

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Message-ID: <c6a02499-457d-6616-9ede-4f2d89bfce3f@huawei.com>
Date:   Wed, 4 Jan 2023 16:35:31 +0800
From:   "liaochang (A)" <liaochang1@...wei.com>
To:     Björn Töpel <bjorn@...nel.org>,
        Chen Guokai <chenguokai17@...ls.ucas.ac.cn>,
        <paul.walmsley@...ive.com>, <palmer@...belt.com>,
        <aou@...s.berkeley.edu>, <rostedt@...dmis.org>, <mingo@...hat.com>,
        <sfr@...b.auug.org.au>
CC:     <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 9/9] riscv/kprobe: Search free registers from unused
 caller-saved ones



在 2023/1/3 2:04, Björn Töpel 写道:
> Chen Guokai <chenguokai17@...ls.ucas.ac.cn> writes:
> 
>> diff --git a/arch/riscv/kernel/probes/opt.c b/arch/riscv/kernel/probes/opt.c
>> index 1c0e9d218f6f..884e77d2df4c 100644
>> --- a/arch/riscv/kernel/probes/opt.c
>> +++ b/arch/riscv/kernel/probes/opt.c
>> @@ -12,6 +12,7 @@
>>  #include <asm/kprobes.h>
>>  #include <asm/patch.h>
>>  #include <asm/asm-offsets.h>
>> +#include <linux/extable.h>
>>  
>>  #include "simulate-insn.h"
>>  #include "decode-insn.h"
>> @@ -130,7 +131,7 @@ static void prepare_detour_buffer(kprobe_opcode_t *code, kprobe_opcode_t *slot,
>>   * as a destination register before any branch or jump instruction.
>>   */
>>  static void find_register(unsigned long start, unsigned long end,
>> -			       unsigned long *write, unsigned long *read)
>> +			  unsigned long *write, unsigned long *read)
> 
> Probably a patch messup; This makes the series no apply fully.

Not sure, i will apply this patch to latest kernel(Linux 6.2-rc2)

> 
> 
> Björn

-- 
BR,
Liao, Chang