[ebiggers:wip-crypto 9/12] arch/x86/crypto/sm4_aesni_avx2_glue.c:110:7: error: call to undeclared function 'cpu_has_xfeatures'; ISO C99 and later do not support implicit function declarations

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git wip-crypto
head:   5e0c73a309dc89400fca72e888f4879582465293
commit: 761d601c8ce5b23a4c90843f7d2ce55f75302516 [9/12] crypto: x86/sm4 - stop using the SIMD helper
config: x86_64-buildonly-randconfig-001-20250331 (https://download.01.org/0day-ci/archive/20250331/202503310513.JIGyzevF-lkp@intel.com/config)
compiler: clang version 20.1.1 (https://github.com/llvm/llvm-project 424c2d9b7e4de40d0804dd374721e6411c27d1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250331/202503310513.JIGyzevF-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/202503310513.JIGyzevF-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/x86/crypto/sm4_aesni_avx2_glue.c:110:7: error: call to undeclared function 'cpu_has_xfeatures'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     110 |         if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM,
         |              ^
   1 error generated.
--
>> arch/x86/crypto/sm4_aesni_avx_glue.c:49:3: error: call to undeclared function 'kernel_fpu_begin'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      49 |                 kernel_fpu_begin();
         |                 ^
>> arch/x86/crypto/sm4_aesni_avx_glue.c:63:3: error: call to undeclared function 'kernel_fpu_end'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      63 |                 kernel_fpu_end();
         |                 ^
   arch/x86/crypto/sm4_aesni_avx_glue.c:137:3: error: call to undeclared function 'kernel_fpu_begin'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     137 |                 kernel_fpu_begin();
         |                 ^
   arch/x86/crypto/sm4_aesni_avx_glue.c:173:3: error: call to undeclared function 'kernel_fpu_end'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     173 |                 kernel_fpu_end();
         |                 ^
   arch/x86/crypto/sm4_aesni_avx_glue.c:202:3: error: call to undeclared function 'kernel_fpu_begin'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     202 |                 kernel_fpu_begin();
         |                 ^
   arch/x86/crypto/sm4_aesni_avx_glue.c:231:3: error: call to undeclared function 'kernel_fpu_end'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     231 |                 kernel_fpu_end();
         |                 ^
>> arch/x86/crypto/sm4_aesni_avx_glue.c:324:7: error: call to undeclared function 'cpu_has_xfeatures'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     324 |         if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM,
         |              ^
   7 errors generated.


vim +/cpu_has_xfeatures +110 arch/x86/crypto/sm4_aesni_avx2_glue.c

5b2efa2bb865eb Tianjia Zhang 2021-08-18   97  
5b2efa2bb865eb Tianjia Zhang 2021-08-18   98  static int __init sm4_init(void)
5b2efa2bb865eb Tianjia Zhang 2021-08-18   99  {
5b2efa2bb865eb Tianjia Zhang 2021-08-18  100  	const char *feature_name;
5b2efa2bb865eb Tianjia Zhang 2021-08-18  101  
5b2efa2bb865eb Tianjia Zhang 2021-08-18  102  	if (!boot_cpu_has(X86_FEATURE_AVX) ||
5b2efa2bb865eb Tianjia Zhang 2021-08-18  103  	    !boot_cpu_has(X86_FEATURE_AVX2) ||
5b2efa2bb865eb Tianjia Zhang 2021-08-18  104  	    !boot_cpu_has(X86_FEATURE_AES) ||
5b2efa2bb865eb Tianjia Zhang 2021-08-18  105  	    !boot_cpu_has(X86_FEATURE_OSXSAVE)) {
5b2efa2bb865eb Tianjia Zhang 2021-08-18  106  		pr_info("AVX2 or AES-NI instructions are not detected.\n");
5b2efa2bb865eb Tianjia Zhang 2021-08-18  107  		return -ENODEV;
5b2efa2bb865eb Tianjia Zhang 2021-08-18  108  	}
5b2efa2bb865eb Tianjia Zhang 2021-08-18  109  
5b2efa2bb865eb Tianjia Zhang 2021-08-18 @110  	if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM,
5b2efa2bb865eb Tianjia Zhang 2021-08-18  111  				&feature_name)) {
5b2efa2bb865eb Tianjia Zhang 2021-08-18  112  		pr_info("CPU feature '%s' is not supported.\n", feature_name);
5b2efa2bb865eb Tianjia Zhang 2021-08-18  113  		return -ENODEV;
5b2efa2bb865eb Tianjia Zhang 2021-08-18  114  	}
5b2efa2bb865eb Tianjia Zhang 2021-08-18  115  
761d601c8ce5b2 Eric Biggers  2025-03-30  116  	return crypto_register_skciphers(sm4_aesni_avx2_skciphers,
761d601c8ce5b2 Eric Biggers  2025-03-30  117  					 ARRAY_SIZE(sm4_aesni_avx2_skciphers));
5b2efa2bb865eb Tianjia Zhang 2021-08-18  118  }
5b2efa2bb865eb Tianjia Zhang 2021-08-18  119  

:::::: The code at line 110 was first introduced by commit
:::::: 5b2efa2bb865eb784e06987c7ce98c3c835b495b crypto: x86/sm4 - add AES-NI/AVX2/x86_64 implementation

:::::: TO: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
:::::: CC: Herbert Xu <herbert@gondor.apana.org.au>

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