From: kernel test robot <lkp@intel.com>
To: Martin KaFai Lau <martin.lau@kernel.org>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
Alexei Starovoitov <ast@kernel.org>,
Amery Hung <ameryhung@gmail.com>
Subject: [linux-next:master 6668/14185] arch/s390/include/asm/jump_label.h:43:11: error: invalid operand for inline asm constraint 'i'
Date: Sun, 04 Oct 2026 04:57:08 +0800 [thread overview]
Message-ID: <202610040408.xH9o1XiH-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: f0406245cb9855e6318335a8a223551354291a46
commit: 369d9dcd8fb855f103a83454f0e1cd1cbc9118be [6668/14185] bpf: Add infrastructure to support attaching struct_ops to cgroups
config: s390-randconfig-1001-20261003 (https://download.01.org/0day-ci/archive/20261004/202610040408.xH9o1XiH-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 5f609f950d2e80addf5566623013db68394334db)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261004/202610040408.xH9o1XiH-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610040408.xH9o1XiH-lkp@intel.com/
Note: the linux-next/master HEAD f0406245cb9855e6318335a8a223551354291a46 builds fine.
It may have been fixed somewhere.
All errors (new ones prefixed by >>):
In file included from kernel/bpf/cgroup.c:8:
In file included from include/linux/kernel.h:23:
In file included from include/linux/bitops.h:67:
In file included from arch/s390/include/asm/bitops.h:75:
In file included from include/asm-generic/bitops/atomic.h:5:
In file included from include/linux/atomic.h:7:
In file included from arch/s390/include/asm/atomic.h:16:
In file included from arch/s390/include/asm/cmpxchg.h:11:
In file included from include/linux/mmdebug.h:5:
In file included from include/linux/bug.h:5:
In file included from arch/s390/include/asm/bug.h:139:
In file included from include/asm-generic/bug.h:31:
In file included from include/linux/printk.h:620:
In file included from include/linux/dynamic_debug.h:6:
In file included from include/linux/jump_label.h:106:
>> arch/s390/include/asm/jump_label.h:43:11: error: invalid operand for inline asm constraint 'i'
43 | asm goto(ARCH_STATIC_BRANCH_ASM("%0+%1", "%l[label]")
| ^
arch/s390/include/asm/jump_label.h:34:2: note: expanded from macro 'ARCH_STATIC_BRANCH_ASM'
34 | "0: brcl 0," label "\n" \
| ^
1 error generated.
vim +/i +43 arch/s390/include/asm/jump_label.h
146448524bddbf Ilya Leoshkevich 2019-02-06 21
6900bec59d0f54 Jan Polensky 2026-06-01 22 #define ARCH_JUMP_TABLE_ENTRY(key, label, local_label) \
6900bec59d0f54 Jan Polensky 2026-06-01 23 ".pushsection __jump_table,\"aw\"\n" \
6900bec59d0f54 Jan Polensky 2026-06-01 24 ".balign 8\n" \
6900bec59d0f54 Jan Polensky 2026-06-01 25 ".long " local_label "-.," label "-.\n" \
6900bec59d0f54 Jan Polensky 2026-06-01 26 ".quad " key "-.\n" \
6900bec59d0f54 Jan Polensky 2026-06-01 27 ".popsection\n"
6900bec59d0f54 Jan Polensky 2026-06-01 28
d5caa4dbf9bd2a Heiko Carstens 2015-01-29 29 /*
0c3b61e00a0d08 Ard Biesheuvel 2022-06-15 30 * We use a brcl 0,<offset> instruction for jump labels so it
d5caa4dbf9bd2a Heiko Carstens 2015-01-29 31 * can be easily distinguished from a hotpatch generated instruction.
d5caa4dbf9bd2a Heiko Carstens 2015-01-29 32 */
6900bec59d0f54 Jan Polensky 2026-06-01 33 #define ARCH_STATIC_BRANCH_ASM(key, label) \
6900bec59d0f54 Jan Polensky 2026-06-01 34 "0: brcl 0," label "\n" \
6900bec59d0f54 Jan Polensky 2026-06-01 35 ARCH_JUMP_TABLE_ENTRY(key, label, "0b")
6900bec59d0f54 Jan Polensky 2026-06-01 36
6900bec59d0f54 Jan Polensky 2026-06-01 37 #define ARCH_STATIC_BRANCH_JUMP_ASM(key, label) \
6900bec59d0f54 Jan Polensky 2026-06-01 38 "0: brcl 15," label "\n" \
6900bec59d0f54 Jan Polensky 2026-06-01 39 ARCH_JUMP_TABLE_ENTRY(key, label, "0b")
6900bec59d0f54 Jan Polensky 2026-06-01 40
7f032febb665f6 Heiko Carstens 2019-10-04 41 static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
5373db886b791b Jan Glauber 2011-03-16 42 {
6900bec59d0f54 Jan Polensky 2026-06-01 @43 asm goto(ARCH_STATIC_BRANCH_ASM("%0+%1", "%l[label]")
146448524bddbf Ilya Leoshkevich 2019-02-06 44 : : JUMP_LABEL_STATIC_KEY_CONSTRAINT (key), "i" (branch) : : label);
11276d5306b8e5 Peter Zijlstra 2015-07-24 45 return false;
11276d5306b8e5 Peter Zijlstra 2015-07-24 46 label:
11276d5306b8e5 Peter Zijlstra 2015-07-24 47 return true;
11276d5306b8e5 Peter Zijlstra 2015-07-24 48 }
11276d5306b8e5 Peter Zijlstra 2015-07-24 49
:::::: The code at line 43 was first introduced by commit
:::::: 6900bec59d0f54dbb94d0799d204bcd44fbdb623 s390/jump_label: Implement ARCH_STATIC_BRANCH_JUMP_ASM and ARCH_STATIC_BRANCH_ASM macros
:::::: TO: Jan Polensky <japo@linux.ibm.com>
:::::: CC: Alexander Gordeev <agordeev@linux.ibm.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-10-03 20:57 UTC|newest]
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