Re: [PATCH 3/5] LoongArch/smp: Refine ipi ops on LoongArch platform

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

Hi Bibo,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 610a9b8f49fbcf1100716370d3b5f6f884a2835a]

url:    https://github.com/intel-lab-lkp/linux/commits/Bibo-Mao/LoongArch-KVM-Add-hypercall-instruction-emulation-support/20240103-151946
base:   610a9b8f49fbcf1100716370d3b5f6f884a2835a
patch link:    https://lore.kernel.org/r/20240103071615.3422264-4-maobibo%40loongson.cn
patch subject: [PATCH 3/5] LoongArch/smp: Refine ipi ops on LoongArch platform
config: loongarch-randconfig-r131-20240103 (https://download.01.org/0day-ci/archive/20240104/202401040952.1JdPfC85-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20240104/202401040952.1JdPfC85-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/202401040952.1JdPfC85-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/loongarch/kernel/smp.c:192:73: sparse: sparse: incorrect type in argument 4 (different address spaces) @@     expected void [noderef] __percpu *percpu_dev_id @@     got int * @@
   arch/loongarch/kernel/smp.c:192:73: sparse:     expected void [noderef] __percpu *percpu_dev_id
   arch/loongarch/kernel/smp.c:192:73: sparse:     got int *
   arch/loongarch/kernel/smp.c: note: in included file (through arch/loongarch/include/asm/loongarch.h, arch/loongarch/include/asm/cpu-info.h, ...):
   ../lib/gcc/loongarch64-linux/13.2.0/include/larchintrin.h:332:3: sparse: sparse: undefined identifier '__builtin_loongarch_iocsrwr_d'
   ../lib/gcc/loongarch64-linux/13.2.0/include/larchintrin.h:284:25: sparse: sparse: undefined identifier '__builtin_loongarch_iocsrrd_w'
   ../lib/gcc/loongarch64-linux/13.2.0/include/larchintrin.h:284:11: sparse: sparse: cast from unknown type
   ../lib/gcc/loongarch64-linux/13.2.0/include/larchintrin.h:322:3: sparse: sparse: undefined identifier '__builtin_loongarch_iocsrwr_w'
   arch/loongarch/kernel/smp.c: note: in included file (through arch/loongarch/include/asm/cpu-info.h, arch/loongarch/include/asm/processor.h, ...):
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: undefined identifier '__builtin_loongarch_csrrd_w'
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: cast from unknown type
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: undefined identifier '__builtin_loongarch_csrwr_w'
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: cast from unknown type
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: undefined identifier '__builtin_loongarch_csrrd_w'
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: cast from unknown type
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: undefined identifier '__builtin_loongarch_csrwr_w'
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: cast from unknown type
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: undefined identifier '__builtin_loongarch_csrrd_w'
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: cast from unknown type
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: undefined identifier '__builtin_loongarch_csrwr_w'
   arch/loongarch/include/asm/loongarch.h:1260:1: sparse: sparse: cast from unknown type
   arch/loongarch/kernel/smp.c: note: in included file (through arch/loongarch/include/asm/loongarch.h, arch/loongarch/include/asm/cpu-info.h, ...):
   ../lib/gcc/loongarch64-linux/13.2.0/include/larchintrin.h:294:30: sparse: sparse: undefined identifier '__builtin_loongarch_iocsrrd_d'
   ../lib/gcc/loongarch64-linux/13.2.0/include/larchintrin.h:294:11: sparse: sparse: cast from unknown type
   arch/loongarch/kernel/smp.c: note: in included file (through include/linux/irqflags.h, include/linux/spinlock.h, include/linux/mmzone.h, ...):
   arch/loongarch/include/asm/percpu.h:30:9: sparse: sparse: undefined identifier '__builtin_loongarch_csrwr_d'
   arch/loongarch/include/asm/percpu.h:30:9: sparse: sparse: cast from unknown type
   arch/loongarch/include/asm/percpu.h:30:9: sparse: sparse: cast from unknown type

vim +192 arch/loongarch/kernel/smp.c

   181	
   182	static void loongson_ipi_init(void)
   183	{
   184		int r, ipi_irq;
   185		static int ipi_dummy_dev;
   186	
   187		ipi_irq = get_percpu_irq(INT_IPI);
   188		if (ipi_irq < 0)
   189			panic("IPI IRQ mapping failed\n");
   190	
   191		irq_set_percpu_devid(ipi_irq);
 > 192		r = request_percpu_irq(ipi_irq, loongson_ipi_interrupt, "IPI", &ipi_dummy_dev);
   193		if (r < 0)
   194			panic("IPI IRQ request failed\n");
   195	}
   196	

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