Hi Heiko,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e8f60cd7db24f94f2dbed6bec30dd16a68fc0828
commit: 4afeb670710efa5cd5ed8b1d9f2d22d6ce332bcc s390/alternatives: use instructions instead of byte patterns
date:   10 months ago
config: s390-randconfig-r004-20230110
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 8d9828ef5aa9688500657d36cd2aefbe12bbd162)
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4afeb670710efa5cd5ed8b1d9f2d22d6ce332bcc
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 4afeb670710efa5cd5ed8b1d9f2d22d6ce332bcc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE'
           ALTINSTR_REPLACEMENT(altinstr, 1)                               \
           ^
   arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
           INSTR_LEN_SANITY_CHECK(altinstr_len(num))
           ^
   arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
           ".if " len " > 254\n"                                           \
            ^
   <inline asm>:5:5: note: instantiated into assembly here
   .if 6651b-6641b > 254
       ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
   arch/s390/include/asm/spinlock.h:81:3: error: cpu alternatives does not support instructions blocks > 254 bytes
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE'
           ALTINSTR_REPLACEMENT(altinstr, 1)                               \
           ^
   arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
           INSTR_LEN_SANITY_CHECK(altinstr_len(num))
           ^
   arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
           "\t.error \"cpu alternatives does not support instructions "    \
            ^
   <inline asm>:6:2: note: instantiated into assembly here
           .error "cpu alternatives does not support instructions blocks > 254 bytes"
           ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
   arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE'
           ALTINSTR_REPLACEMENT(altinstr, 1)                               \
           ^
   arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
           INSTR_LEN_SANITY_CHECK(altinstr_len(num))
           ^
   arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
           ".if (" len ") %% 2\n"                                          \
            ^
   <inline asm>:8:5: note: instantiated into assembly here
   .if (6651b-6641b) % 2
       ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
   arch/s390/include/asm/spinlock.h:81:3: error: cpu alternatives instructions length is odd
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE'
           ALTINSTR_REPLACEMENT(altinstr, 1)                               \
           ^
   arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
           INSTR_LEN_SANITY_CHECK(altinstr_len(num))
           ^
   arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
           "\t.error \"cpu alternatives instructions length is odd\"\n"    \
            ^
   <inline asm>:9:2: note: instantiated into assembly here
           .error "cpu alternatives instructions length is odd"
           ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
   arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
           OLDINSTR_PADDING(oldinstr, num)                                 \
           ^
   arch/s390/include/asm/alternative.h:71:3: note: expanded from macro 'OLDINSTR_PADDING'
           ".if " oldinstr_pad_len(num) " > 6\n"                           \
            ^
   <inline asm>:15:5: note: instantiated into assembly here
   .if -(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) > 6
       ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
>> arch/s390/include/asm/spinlock.h:81:3: error: unexpected token in '.rept' directive
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
           OLDINSTR_PADDING(oldinstr, num)                                 \
           ^
   arch/s390/include/asm/alternative.h:74:3: note: expanded from macro 'OLDINSTR_PADDING'
           "\t.rept (" oldinstr_pad_len(num) " - (6620b-662b)) / 2\n"      \
            ^
   <inline asm>:18:8: note: instantiated into assembly here
           .rept (-(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) - (6620b-662b)) / 2
                 ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
>> arch/s390/include/asm/spinlock.h:81:3: error: unexpected token in '.rept' directive
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
           OLDINSTR_PADDING(oldinstr, num)                                 \
           ^
   arch/s390/include/asm/alternative.h:77:3: note: expanded from macro 'OLDINSTR_PADDING'
           "\t.rept " oldinstr_pad_len(num) " / 6\n"                       \
            ^
   <inline asm>:21:8: note: instantiated into assembly here
           .rept -(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) / 6
                 ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
>> arch/s390/include/asm/spinlock.h:81:3: error: unknown directive
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
           OLDINSTR_PADDING(oldinstr, num)                                 \
           ^
   arch/s390/include/asm/alternative.h:78:3: note: expanded from macro 'OLDINSTR_PADDING'
           "\t.jgnop .\n"                                                  \
            ^
   <inline asm>:22:2: note: instantiated into assembly here
           .jgnop .
           ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
>> arch/s390/include/asm/spinlock.h:81:3: error: unmatched '.endr' directive
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
           OLDINSTR_PADDING(oldinstr, num)                                 \
           ^
   arch/s390/include/asm/alternative.h:79:3: note: expanded from macro 'OLDINSTR_PADDING'
           "\t.endr\n"                                                     \
            ^
   <inline asm>:23:7: note: instantiated into assembly here
           .endr
                ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
>> arch/s390/include/asm/spinlock.h:81:3: error: unexpected token in '.rept' directive
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
           OLDINSTR_PADDING(oldinstr, num)                                 \
           ^
   arch/s390/include/asm/alternative.h:80:3: note: expanded from macro 'OLDINSTR_PADDING'
           "\t.rept " oldinstr_pad_len(num) " %% 6 / 4\n"                  \
            ^
   <inline asm>:24:8: note: instantiated into assembly here
           .rept -(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) % 6 / 4
                 ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
>> arch/s390/include/asm/spinlock.h:81:3: error: unmatched '.endr' directive
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
           OLDINSTR_PADDING(oldinstr, num)                                 \
           ^
   arch/s390/include/asm/alternative.h:82:3: note: expanded from macro 'OLDINSTR_PADDING'
           "\t.endr\n"                                                     \
            ^
   <inline asm>:26:7: note: instantiated into assembly here
           .endr
                ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
>> arch/s390/include/asm/spinlock.h:81:3: error: unexpected token in '.rept' directive
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
           OLDINSTR_PADDING(oldinstr, num)                                 \
           ^
   arch/s390/include/asm/alternative.h:83:3: note: expanded from macro 'OLDINSTR_PADDING'
           "\t.rept " oldinstr_pad_len(num) " %% 6 %% 4 / 2\n"             \
            ^
   <inline asm>:27:8: note: instantiated into assembly here
           .rept -(((6651b-6641b)-(662b-661b)) > 0) * ((6651b-6641b)-(662b-661b)) % 6 % 4 / 2
                 ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
>> arch/s390/include/asm/spinlock.h:81:3: error: unmatched '.endr' directive
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
           OLDINSTR_PADDING(oldinstr, num)                                 \
           ^
   arch/s390/include/asm/alternative.h:85:3: note: expanded from macro 'OLDINSTR_PADDING'
           ".endr\n"                                                       \
            ^
   <inline asm>:29:6: note: instantiated into assembly here
   .endr
        ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
   arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:92:2: note: expanded from macro 'OLDINSTR'
           INSTR_LEN_SANITY_CHECK(oldinstr_len)
           ^
   arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
           ".if " len " > 254\n"                                           \
            ^
   <inline asm>:32:5: note: instantiated into assembly here
   .if 662b-661b > 254
       ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
   arch/s390/include/asm/spinlock.h:81:3: error: cpu alternatives does not support instructions blocks > 254 bytes
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:92:2: note: expanded from macro 'OLDINSTR'
           INSTR_LEN_SANITY_CHECK(oldinstr_len)
           ^
   arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
           "\t.error \"cpu alternatives does not support instructions "    \
            ^
   <inline asm>:33:2: note: instantiated into assembly here
           .error "cpu alternatives does not support instructions blocks > 254 bytes"
           ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
   arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:92:2: note: expanded from macro 'OLDINSTR'
           INSTR_LEN_SANITY_CHECK(oldinstr_len)
           ^
   arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
           ".if (" len ") %% 2\n"                                          \
            ^
   <inline asm>:35:5: note: instantiated into assembly here
   .if (662b-661b) % 2
       ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
   arch/s390/include/asm/spinlock.h:81:3: error: cpu alternatives instructions length is odd
                   ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */
                   ^
   arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
           OLDINSTR(oldinstr, 1)                                           \
           ^
   arch/s390/include/asm/alternative.h:92:2: note: expanded from macro 'OLDINSTR'
           INSTR_LEN_SANITY_CHECK(oldinstr_len)
           ^
   arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
           "\t.error \"cpu alternatives instructions length is odd\"\n"    \
            ^
   <inline asm>:36:2: note: instantiated into assembly here
           .error "cpu alternatives instructions length is odd"
           ^
   In file included from fs/cachefiles/cache.c:8:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
   In file included from include/linux/mmzone.h:8:
   In file included from include/linux/spinlock.h:93:
   arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression
..


vim +81 arch/s390/include/asm/spinlock.h

^1da177e4c3f41 include/asm-s390/spinlock.h      Linus Torvalds     2005-04-16  76  
0199c4e68d1f02 arch/s390/include/asm/spinlock.h Thomas Gleixner    2009-12-02  77  static inline void arch_spin_unlock(arch_spinlock_t *lp)
^1da177e4c3f41 include/asm-s390/spinlock.h      Linus Torvalds     2005-04-16  78  {
02c503ff237cdc arch/s390/include/asm/spinlock.h Martin Schwidefsky 2016-11-28  79  	typecheck(int, lp->lock);
cceb018377a123 arch/s390/include/asm/spinlock.h Heiko Carstens     2019-10-18  80  	asm_inline volatile(
f554be42fd0fd8 arch/s390/include/asm/spinlock.h Vasily Gorbik      2017-10-12 @81  		ALTERNATIVE("", ".long 0xb2fa0070", 49)	/* NIAI 7 */
b96f7d881ad942 arch/s390/include/asm/spinlock.h Martin Schwidefsky 2017-03-24  82  		"	sth	%1,%0\n"
4f9abb7e70f2f4 arch/s390/include/asm/spinlock.h Heiko Carstens     2021-03-22  83  		: "=R" (((unsigned short *) &lp->lock)[1])
b96f7d881ad942 arch/s390/include/asm/spinlock.h Martin Schwidefsky 2017-03-24  84  		: "d" (0) : "cc", "memory");
5b3f683e694a83 arch/s390/include/asm/spinlock.h Philipp Hachtmann  2014-04-07  85  }
5b3f683e694a83 arch/s390/include/asm/spinlock.h Philipp Hachtmann  2014-04-07  86  

:::::: The code at line 81 was first introduced by commit
:::::: f554be42fd0fd8dd14680c67f2db26b3e7de9670 s390/spinlock: use cpu alternatives to enable niai instruction

:::::: TO: Vasily Gorbik <gor@linux.vnet.ibm.com>
:::::: CC: Martin Schwidefsky <schwidefsky@de.ibm.com>

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