linux-kernel - arch/s390/include/asm/atomic_ops.h:56:45: error: invalid operand for inline asm constraint 'i'

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Message-ID: <202008201500.aOkzA3ZM%lkp@intel.com>
Date:   Thu, 20 Aug 2020 15:34:05 +0800
From:   kernel test robot <lkp@...el.com>
To:     Vasily Gorbik <gor@...ux.ibm.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org, Heiko Carstens <hca@...ux.ibm.com>
Subject: arch/s390/include/asm/atomic_ops.h:56:45: error: invalid operand for
 inline asm constraint 'i'

Hi Vasily,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   18445bf405cb331117bc98427b1ba6f12418ad17
commit: f0cbd3b83ed47803df941865f720934c69abb803 s390/atomic: circumvent gcc 10 build regression
date:   9 days ago
config: s390-randconfig-r003-20200818 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 4deda57106f7c9b982a49cb907c33e3966c8de7f)
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 s390 cross compiling tool for clang build
        # apt-get install binutils-s390x-linux-gnu
        git checkout f0cbd3b83ed47803df941865f720934c69abb803
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from drivers/tty/tty_buffer.c:8:
   In file included from include/linux/tty.h:5:
   In file included from include/linux/fs.h:6:
   In file included from include/linux/wait_bit.h:8:
   In file included from include/linux/wait.h:7:
   In file included from include/linux/list.h:9:
   In file included from include/linux/kernel.h:12:
   In file included from include/linux/bitops.h:29:
   In file included from arch/s390/include/asm/bitops.h:39:
>> arch/s390/include/asm/atomic_ops.h:56:45: error: invalid operand for inline asm constraint 'i'
   __ATOMIC_CONST_OPS(__atomic_add_const, int, "asi")
                                               ^
   1 error generated.

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f0cbd3b83ed47803df941865f720934c69abb803
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout f0cbd3b83ed47803df941865f720934c69abb803
vim +/i +56 arch/s390/include/asm/atomic_ops.h

126b30c3cb476c Martin Schwidefsky 2016-11-11  51  
eb3b7b848fb3dd Martin Schwidefsky 2017-03-24  52  #define __ATOMIC_CONST_OPS(op_name, op_type, op_string)			\
eb3b7b848fb3dd Martin Schwidefsky 2017-03-24  53  	__ATOMIC_CONST_OP(op_name, op_type, op_string, "\n")		\
eb3b7b848fb3dd Martin Schwidefsky 2017-03-24  54  	__ATOMIC_CONST_OP(op_name##_barrier, op_type, op_string, "bcr 14,0\n")
eb3b7b848fb3dd Martin Schwidefsky 2017-03-24  55  
eb3b7b848fb3dd Martin Schwidefsky 2017-03-24 @56  __ATOMIC_CONST_OPS(__atomic_add_const, int, "asi")
eb3b7b848fb3dd Martin Schwidefsky 2017-03-24  57  __ATOMIC_CONST_OPS(__atomic64_add_const, long, "agsi")
eb3b7b848fb3dd Martin Schwidefsky 2017-03-24  58  

:::::: The code at line 56 was first introduced by commit
:::::: eb3b7b848fb3dd00f7a57d633d4ae4d194aa7865 s390/rwlock: introduce rwlock wait queueing

:::::: TO: Martin Schwidefsky <schwidefsky@...ibm.com>
:::::: CC: Martin Schwidefsky <schwidefsky@...ibm.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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