Re: [PATCH v3 7/7] riscv: vector: adjust minimum Vector requirement to ZVE32X

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

Hi Andy,

kernel test robot noticed the following build errors:

[auto build test ERROR on 099dbac6e90c620d8ce0bbf75bbdc94da1feb4fb]

url:    https://github.com/intel-lab-lkp/linux/commits/Andy-Chiu/riscv-vector-add-a-comment-when-calling-riscv_setup_vsize/20240318-184348
base:   099dbac6e90c620d8ce0bbf75bbdc94da1feb4fb
patch link:    https://lore.kernel.org/r/20240318-zve-detection-v3-7-e12d42107fa8%40sifive.com
patch subject: [PATCH v3 7/7] riscv: vector: adjust minimum Vector requirement to ZVE32X
config: riscv-allnoconfig (https://download.01.org/0day-ci/archive/20240319/202403190142.8MfCnioh-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240319/202403190142.8MfCnioh-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/202403190142.8MfCnioh-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/riscv/kernel/process.c: In function 'arch_release_task_struct':
>> arch/riscv/kernel/process.c:181:24: error: 'ZVE32X' undeclared (first use in this function)
     181 |         if (has_vector(ZVE32X))
         |                        ^~~~~~
   arch/riscv/kernel/process.c:181:24: note: each undeclared identifier is reported only once for each function it appears in
   arch/riscv/kernel/process.c: In function 'copy_thread':
   arch/riscv/kernel/process.c:228:24: error: 'ZVE32X' undeclared (first use in this function)
     228 |         if (has_vector(ZVE32X))
         |                        ^~~~~~
--
   arch/riscv/kernel/signal.c: In function 'restore_sigcontext':
>> arch/riscv/kernel/signal.c:191:41: error: 'ZVE32X' undeclared (first use in this function)
     191 |                         if (!has_vector(ZVE32X) || !riscv_v_vstate_query(regs) ||
         |                                         ^~~~~~
   arch/riscv/kernel/signal.c:191:41: note: each undeclared identifier is reported only once for each function it appears in
   arch/riscv/kernel/signal.c: In function 'get_rt_frame_size':
   arch/riscv/kernel/signal.c:213:24: error: 'ZVE32X' undeclared (first use in this function)
     213 |         if (has_vector(ZVE32X)) {
         |                        ^~~~~~
   arch/riscv/kernel/signal.c: In function 'setup_sigcontext':
   arch/riscv/kernel/signal.c:286:24: error: 'ZVE32X' undeclared (first use in this function)
     286 |         if (has_vector(ZVE32X) && riscv_v_vstate_query(regs))
         |                        ^~~~~~
--
   arch/riscv/kernel/sys_hwprobe.c: In function 'hwprobe_isa_ext0':
>> arch/riscv/kernel/sys_hwprobe.c:72:24: error: 'v' undeclared (first use in this function)
      72 |         if (has_vector(v))
         |                        ^
   arch/riscv/kernel/sys_hwprobe.c:72:24: note: each undeclared identifier is reported only once for each function it appears in
>> arch/riscv/kernel/sys_hwprobe.c:119:32: error: 'ZVE32X' undeclared (first use in this function)
     119 |                 if (has_vector(ZVE32X)) {
         |                                ^~~~~~
--
   In file included from kernel/sched/core.c:78:
   kernel/sched/core.c: In function 'context_switch':
>> arch/riscv/include/asm/switch_to.h:81:24: error: 'ZVE32X' undeclared (first use in this function)
      81 |         if (has_vector(ZVE32X))                 \
         |                        ^~~~~~
   kernel/sched/core.c:5400:9: note: in expansion of macro 'switch_to'
    5400 |         switch_to(prev, next, prev);
         |         ^~~~~~~~~
   arch/riscv/include/asm/switch_to.h:81:24: note: each undeclared identifier is reported only once for each function it appears in
      81 |         if (has_vector(ZVE32X))                 \
         |                        ^~~~~~
   kernel/sched/core.c:5400:9: note: in expansion of macro 'switch_to'
    5400 |         switch_to(prev, next, prev);
         |         ^~~~~~~~~


vim +/ZVE32X +181 arch/riscv/kernel/process.c

   177	
   178	void arch_release_task_struct(struct task_struct *tsk)
   179	{
   180		/* Free the vector context of datap. */
 > 181		if (has_vector(ZVE32X))
   182			riscv_v_thread_free(tsk);
   183	}
   184	

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