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Date:   Mon, 17 Apr 2023 07:57:04 +0800
From:   kernel test robot <lkp@intel.com>
To:     "Borislav Petkov (AMD)" <bp@alien8.de>
Cc:     llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
        linux-kernel@vger.kernel.org
Subject: arch/mips/include/asm/timex.h:75:10: error: instruction requires a
 CPU feature not currently enabled
Message-ID: <202304170748.Fg9VIgGd-lkp@intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Precedence: bulk

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6a8f57ae2eb07ab39a6f0ccad60c760743051026
commit: aba5b397cad7d398b385aaf5029f99f41b690466 hamradio: baycom_epp: Do not use x86-specific rdtsc()
date:   4 months ago
config: mips-buildonly-randconfig-r001-20230417 (https://download.01.org/0day-ci/archive/20230417/202304170748.Fg9VIgGd-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 9638da200e00bd069e6dd63604e14cbafede9324)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mipsel-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=aba5b397cad7d398b385aaf5029f99f41b690466
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout aba5b397cad7d398b385aaf5029f99f41b690466
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/net/hamradio/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304170748.Fg9VIgGd-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/net/hamradio/baycom_epp.c:29:
   In file included from include/linux/module.h:13:
   In file included from include/linux/stat.h:19:
   In file included from include/linux/time.h:60:
   In file included from include/linux/time32.h:13:
   In file included from include/linux/timex.h:67:
>> arch/mips/include/asm/timex.h:75:10: error: instruction requires a CPU feature not currently enabled
                   return read_c0_count();
                          ^
   arch/mips/include/asm/mipsregs.h:1712:26: note: expanded from macro 'read_c0_count'
   #define read_c0_count()         __read_32bit_c0_register($9, 0)
                                   ^
   arch/mips/include/asm/mipsregs.h:1453:2: note: expanded from macro '__read_32bit_c0_register'
           ___read_32bit_c0_register(source, sel, __volatile__)
           ^
   arch/mips/include/asm/mipsregs.h:1419:4: note: expanded from macro '___read_32bit_c0_register'
                           "mfc0\t%0, " #source "\n\t"                     \
                           ^
   <inline asm>:1:2: note: instantiated into assembly here
           mfc0    $4, $9
           ^
   In file included from drivers/net/hamradio/baycom_epp.c:29:
   In file included from include/linux/module.h:13:
   In file included from include/linux/stat.h:19:
   In file included from include/linux/time.h:60:
   In file included from include/linux/time32.h:13:
   In file included from include/linux/timex.h:67:
>> arch/mips/include/asm/timex.h:75:10: error: instruction requires a CPU feature not currently enabled
                   return read_c0_count();
                          ^
   arch/mips/include/asm/mipsregs.h:1712:26: note: expanded from macro 'read_c0_count'
   #define read_c0_count()         __read_32bit_c0_register($9, 0)
                                   ^
   arch/mips/include/asm/mipsregs.h:1453:2: note: expanded from macro '__read_32bit_c0_register'
           ___read_32bit_c0_register(source, sel, __volatile__)
           ^
   arch/mips/include/asm/mipsregs.h:1419:4: note: expanded from macro '___read_32bit_c0_register'
                           "mfc0\t%0, " #source "\n\t"                     \
                           ^
   <inline asm>:1:2: note: instantiated into assembly here
           mfc0    $2, $9
           ^
   In file included from drivers/net/hamradio/baycom_epp.c:29:
   In file included from include/linux/module.h:13:
   In file included from include/linux/stat.h:19:
   In file included from include/linux/time.h:60:
   In file included from include/linux/time32.h:13:
   In file included from include/linux/timex.h:67:
>> arch/mips/include/asm/timex.h:75:10: error: instruction requires a CPU feature not currently enabled
                   return read_c0_count();
                          ^
   arch/mips/include/asm/mipsregs.h:1712:26: note: expanded from macro 'read_c0_count'
   #define read_c0_count()         __read_32bit_c0_register($9, 0)
                                   ^
   arch/mips/include/asm/mipsregs.h:1453:2: note: expanded from macro '__read_32bit_c0_register'
           ___read_32bit_c0_register(source, sel, __volatile__)
           ^
   arch/mips/include/asm/mipsregs.h:1419:4: note: expanded from macro '___read_32bit_c0_register'
                           "mfc0\t%0, " #source "\n\t"                     \
                           ^
   <inline asm>:1:2: note: instantiated into assembly here
           mfc0    $2, $9
           ^
   In file included from drivers/net/hamradio/baycom_epp.c:29:
   In file included from include/linux/module.h:13:
   In file included from include/linux/stat.h:19:
   In file included from include/linux/time.h:60:
   In file included from include/linux/time32.h:13:
   In file included from include/linux/timex.h:67:
>> arch/mips/include/asm/timex.h:75:10: error: instruction requires a CPU feature not currently enabled
                   return read_c0_count();
                          ^
   arch/mips/include/asm/mipsregs.h:1712:26: note: expanded from macro 'read_c0_count'
   #define read_c0_count()         __read_32bit_c0_register($9, 0)
                                   ^
   arch/mips/include/asm/mipsregs.h:1453:2: note: expanded from macro '__read_32bit_c0_register'
           ___read_32bit_c0_register(source, sel, __volatile__)
           ^
   arch/mips/include/asm/mipsregs.h:1419:4: note: expanded from macro '___read_32bit_c0_register'
                           "mfc0\t%0, " #source "\n\t"                     \
                           ^
   <inline asm>:1:2: note: instantiated into assembly here
           mfc0    $2, $9
           ^
   4 errors generated.


vim +75 arch/mips/include/asm/timex.h

9c9b415c50bc29 Ralf Baechle       2013-09-12  71  
06947aaaf9bf7d Maciej W. Rozycki  2014-04-06  72  static inline cycles_t get_cycles(void)
06947aaaf9bf7d Maciej W. Rozycki  2014-04-06  73  {
06947aaaf9bf7d Maciej W. Rozycki  2014-04-06  74  	if (can_use_mips_counter(read_c0_prid()))
9c9b415c50bc29 Ralf Baechle       2013-09-12 @75  		return read_c0_count();
06947aaaf9bf7d Maciej W. Rozycki  2014-04-06  76  	else
06947aaaf9bf7d Maciej W. Rozycki  2014-04-06  77  		return 0;	/* no usable counter */
9c9b415c50bc29 Ralf Baechle       2013-09-12  78  }
1c99c6a7c3c599 Jason A. Donenfeld 2022-04-08  79  #define get_cycles get_cycles
9c9b415c50bc29 Ralf Baechle       2013-09-12  80  

:::::: The code at line 75 was first introduced by commit
:::::: 9c9b415c50bc298ac61412dff856eae2f54889ee MIPS: Reimplement get_cycles().

:::::: TO: Ralf Baechle <ralf@linux-mips.org>
:::::: CC: Ralf Baechle <ralf@linux-mips.org>

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