linux-kernel - Re: [PATCH 10/10] RISC-V: Refactor bug and traps instructions

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Message-ID: <202308041213.o49SRQWZ-lkp@intel.com>
Date:   Fri, 4 Aug 2023 13:16:55 +0800
From:   kernel test robot <lkp@...el.com>
To:     Charlie Jenkins <charlie@...osinc.com>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, kvm-riscv@...ts.infradead.org,
        bpf@...r.kernel.org
Cc:     oe-kbuild-all@...ts.linux.dev,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Peter Zijlstra <peterz@...radead.org>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        Jason Baron <jbaron@...mai.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Anup Patel <anup@...infault.org>,
        Atish Patra <atishp@...shpatra.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Stanislav Fomichev <sdf@...gle.com>,
        Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Björn Töpel <bjorn@...nel.org>,
        Luke Nelson <luke.r.nels@...il.com>,
        Xi Wang <xi.wang@...il.com>, Nam Cao <namcaov@...il.com>
Subject: Re: [PATCH 10/10] RISC-V: Refactor bug and traps instructions

Hi Charlie,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 5d0c230f1de8c7515b6567d9afba1f196fb4e2f4]

url:    https://github.com/intel-lab-lkp/linux/commits/Charlie-Jenkins/RISC-V-Expand-instruction-definitions/20230804-101437
base:   5d0c230f1de8c7515b6567d9afba1f196fb4e2f4
patch link:    https://lore.kernel.org/r/20230803-master-refactor-instructions-v4-v1-10-2128e61fa4ff%40rivosinc.com
patch subject: [PATCH 10/10] RISC-V: Refactor bug and traps instructions
config: riscv-allyesconfig (https://download.01.org/0day-ci/archive/20230804/202308041213.o49SRQWZ-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230804/202308041213.o49SRQWZ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308041213.o49SRQWZ-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/riscv/kernel/elf_kexec.c:326: warning: "RV_X" redefined
     326 | #define RV_X(x, s, n)  (((x) >> (s)) & ((1 << (n)) - 1))
         | 
   In file included from arch/riscv/include/asm/bug.h:14,
                    from include/linux/bug.h:5,
                    from include/linux/thread_info.h:13,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/riscv/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:79,
                    from include/linux/spinlock.h:56,
                    from include/linux/ipc.h:5,
                    from include/uapi/linux/sem.h:5,
                    from include/linux/sem.h:5,
                    from include/linux/compat.h:14,
                    from arch/riscv/include/asm/elf.h:12,
                    from include/linux/elf.h:6,
                    from arch/riscv/kernel/elf_kexec.c:15:
   arch/riscv/include/asm/insn.h:1915: note: this is the location of the previous definition
    1915 | #define RV_X(X, s, mask)  (((X) >> (s)) & (mask))
         | 


vim +/RV_X +326 arch/riscv/kernel/elf_kexec.c

6261586e0c91db1 Liao Chang 2022-04-08  325  
838b3e28488f702 Li Zhengyu 2022-04-08 @326  #define RV_X(x, s, n)  (((x) >> (s)) & ((1 << (n)) - 1))
838b3e28488f702 Li Zhengyu 2022-04-08  327  #define RISCV_IMM_BITS 12
838b3e28488f702 Li Zhengyu 2022-04-08  328  #define RISCV_IMM_REACH (1LL << RISCV_IMM_BITS)
838b3e28488f702 Li Zhengyu 2022-04-08  329  #define RISCV_CONST_HIGH_PART(x) \
838b3e28488f702 Li Zhengyu 2022-04-08  330  	(((x) + (RISCV_IMM_REACH >> 1)) & ~(RISCV_IMM_REACH - 1))
838b3e28488f702 Li Zhengyu 2022-04-08  331  #define RISCV_CONST_LOW_PART(x) ((x) - RISCV_CONST_HIGH_PART(x))
838b3e28488f702 Li Zhengyu 2022-04-08  332  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki