linux-kernel - arch/loongarch/include/asm/percpu.h:20:4: error: #error compiler support for the model attribute is necessary when a recent assembler is used

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Message-ID: <202309221713.iTLkJPrI-lkp@intel.com>
Date:   Fri, 22 Sep 2023 17:25:06 +0800
From:   kernel test robot <lkp@...el.com>
To:     WANG Xuerui <git@...0n.name>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Huacai Chen <chenhuacai@...nel.org>
Subject: arch/loongarch/include/asm/percpu.h:20:4: error: #error compiler
 support for the model attribute is necessary when a recent assembler is used

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   27bbf45eae9ca98877a2d52a92a188147cd61b07
commit: 38b10b269d04540aee05c34a059dcf304cfce0a8 LoongArch: Tweak CFLAGS for Clang compatibility
date:   3 months ago
config: loongarch-loongson3_defconfig (https://download.01.org/0day-ci/archive/20230922/202309221713.iTLkJPrI-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230922/202309221713.iTLkJPrI-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/202309221713.iTLkJPrI-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/percpu.h:12,
                    from include/linux/context_tracking_state.h:5,
                    from include/linux/hardirq.h:5,
                    from include/linux/interrupt.h:11,
                    from sound/pci/bt87x.c:11:
>> arch/loongarch/include/asm/percpu.h:20:4: error: #error compiler support for the model attribute is necessary when a recent assembler is used
      20 | #  error compiler support for the model attribute is necessary when a recent assembler is used
         |    ^~~~~


vim +20 arch/loongarch/include/asm/percpu.h

    10	
    11	/*
    12	 * The "address" (in fact, offset from $r21) of a per-CPU variable is close to
    13	 * the loading address of main kernel image, but far from where the modules are
    14	 * loaded. Tell the compiler this fact when using explicit relocs.
    15	 */
    16	#if defined(MODULE) && defined(CONFIG_AS_HAS_EXPLICIT_RELOCS)
    17	# if __has_attribute(model)
    18	#  define PER_CPU_ATTRIBUTES __attribute__((model("extreme")))
    19	# else
  > 20	#  error compiler support for the model attribute is necessary when a recent assembler is used
    21	# endif
    22	#endif
    23	

-- 
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https://github.com/intel/lkp-tests/wiki