Re: [PATCH 2/2] platform/x86/intel/ifs: Initialize AMX state for the scan test

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

Hi Chang,

kernel test robot noticed the following build errors:

[auto build test ERROR on e67572cd2204894179d89bd7b984072f19313b03]

url:    https://github.com/intel-lab-lkp/linux/commits/Chang-S-Bae/x86-fpu-Extend-kernel_fpu_begin_mask-to-initialize-AMX-state/20240501-054234
base:   e67572cd2204894179d89bd7b984072f19313b03
patch link:    https://lore.kernel.org/r/20240430212508.105117-3-chang.seok.bae%40intel.com
patch subject: [PATCH 2/2] platform/x86/intel/ifs: Initialize AMX state for the scan test
config: x86_64-buildonly-randconfig-004-20240505 (https://download.01.org/0day-ci/archive/20240505/202405051417.5CWuLrhT-lkp@intel.com/config)
compiler: clang version 18.1.4 (https://github.com/llvm/llvm-project e6c3289804a67ea0bb6a86fadbe454dd93b8d855)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240505/202405051417.5CWuLrhT-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/202405051417.5CWuLrhT-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/platform/x86/intel/ifs/load.c:9:
>> drivers/platform/x86/intel/ifs/ifs.h:334:2: error: call to undeclared function 'kernel_fpu_begin_mask'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     334 |         kernel_fpu_begin_mask(KFPU_AMX);
         |         ^
>> drivers/platform/x86/intel/ifs/ifs.h:334:24: error: use of undeclared identifier 'KFPU_AMX'
     334 |         kernel_fpu_begin_mask(KFPU_AMX);
         |                               ^
>> drivers/platform/x86/intel/ifs/ifs.h:339:2: error: call to undeclared function 'kernel_fpu_end'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     339 |         kernel_fpu_end();
         |         ^
   3 errors generated.


vim +/kernel_fpu_begin_mask +334 drivers/platform/x86/intel/ifs/ifs.h

   327	
   328	static inline void ifs_fpu_begin(void)
   329	{
   330		/*
   331		 * The AMX state must be initialized prior to executing In-Field
   332		 * Scan tests, according to Intel SDM.
   333		 */
 > 334		kernel_fpu_begin_mask(KFPU_AMX);
   335	}
   336	
   337	static inline void ifs_fpu_end(void)
   338	{
 > 339		kernel_fpu_end();
   340	}
   341	

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