Re: [PATCH v2 2/3] riscv: introduce percpu.h into include/asm

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

Hi Yunhui,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on v6.18 next-20251209]
[cannot apply to bpf-next/net bpf-next/master bpf/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Yunhui-Cui/riscv-remove-irqflags-h-inclusion-in-asm-bitops-h/20251208-115407
base:   linus/master
patch link:    https://lore.kernel.org/r/20251208034944.73113-3-cuiyunhui%40bytedance.com
patch subject: [PATCH v2 2/3] riscv: introduce percpu.h into include/asm
config: riscv-randconfig-r132-20251209 (https://download.01.org/0day-ci/archive/20251210/202512100134.TRTNjFGL-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251210/202512100134.TRTNjFGL-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/202512100134.TRTNjFGL-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   fs/gfs2/file.c: note: in included file (through include/linux/irqflags.h, include/linux/spinlock.h, include/linux/mmzone.h, ...):
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
--
   fs/gfs2/trans.c: note: in included file (through include/linux/irqflags.h, include/linux/spinlock.h, include/linux/sched.h):
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)
>> arch/riscv/include/asm/percpu.h:113:1: sparse: sparse: cast truncates bits from constant value (ffffffff becomes ffff)

vim +113 arch/riscv/include/asm/percpu.h

   108	
   109	#define PERCPU_OP_8_16(op_name, op, expr, final_op)			\
   110		PERCPU_8_16_OP(op_name, op, 8, .b, u8, expr, final_op);		\
   111		PERCPU_8_16_OP(op_name, op, 16, .h, u16, expr, final_op)
   112	
 > 113	PERCPU_OP_8_16(add, add, val, add)
   114	PERCPU_OP_8_16(andnot, and, ~val, and)
   115	PERCPU_OP_8_16(or, or, val, or)
   116	

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