Re: [PATCH V2 2/3] riscv: mm: Add soft-dirty page tracking support

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

Hi Chunyan,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on linus/master v6.11-rc1 next-20240802]
[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/Chunyan-Zhang/riscv-mm-Prepare-for-reuse-PTE-RSW-bit-9/20240801-231628
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20240731040444.3384790-3-zhangchunyan%40iscas.ac.cn
patch subject: [PATCH V2 2/3] riscv: mm: Add soft-dirty page tracking support
config: riscv-randconfig-r133-20240802 (https://download.01.org/0day-ci/archive/20240804/202408040937.f2DDJjCu-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 423aec6573df4424f90555468128e17073ddc69e)
reproduce: (https://download.01.org/0day-ci/archive/20240804/202408040937.f2DDJjCu-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/202408040937.f2DDJjCu-lkp@intel.com/

All errors (new ones prefixed by >>):

         |         ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
     104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
         |                                          ~~~~~~~~~~ ^
   In file included from lib/vsprintf.c:36:
   In file included from include/linux/rtc.h:17:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     752 |         insw(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
     105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
         |                                          ~~~~~~~~~~ ^
   In file included from lib/vsprintf.c:36:
   In file included from include/linux/rtc.h:17:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     760 |         insl(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
     106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
         |                                          ~~~~~~~~~~ ^
   In file included from lib/vsprintf.c:36:
   In file included from include/linux/rtc.h:17:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     769 |         outsb(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
     118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
         |                                            ~~~~~~~~~~ ^
   In file included from lib/vsprintf.c:36:
   In file included from include/linux/rtc.h:17:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     778 |         outsw(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
     119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
         |                                            ~~~~~~~~~~ ^
   In file included from lib/vsprintf.c:36:
   In file included from include/linux/rtc.h:17:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     787 |         outsl(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
     120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
         |                                            ~~~~~~~~~~ ^
   In file included from lib/vsprintf.c:36:
   In file included from include/linux/rtc.h:17:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
    1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
         |                                                   ~~~~~~~~~~ ^
   In file included from lib/vsprintf.c:50:
   In file included from lib/../mm/internal.h:13:
   include/linux/mm_inline.h:47:41: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
      47 |         __mod_lruvec_state(lruvec, NR_LRU_BASE + lru, nr_pages);
         |                                    ~~~~~~~~~~~ ^ ~~~
   include/linux/mm_inline.h:49:22: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
      49 |                                 NR_ZONE_LRU_BASE + lru, nr_pages);
         |                                 ~~~~~~~~~~~~~~~~ ^ ~~~
   In file included from lib/vsprintf.c:50:
>> lib/../mm/internal.h:1332:41: error: call to undeclared function 'pmd_soft_dirty'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    1332 |         return vma_soft_dirty_enabled(vma) && !pmd_soft_dirty(pmd);
         |                                                ^
   lib/../mm/internal.h:1332:41: note: did you mean 'pmd_swp_soft_dirty'?
   include/linux/pgtable.h:1415:19: note: 'pmd_swp_soft_dirty' declared here
    1415 | static inline int pmd_swp_soft_dirty(pmd_t pmd)
         |                   ^
   In file included from lib/vsprintf.c:50:
>> lib/../mm/internal.h:1337:41: error: call to undeclared function 'pte_soft_dirty'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    1337 |         return vma_soft_dirty_enabled(vma) && !pte_soft_dirty(pte);
         |                                                ^
   16 warnings and 2 errors generated.


vim +/pmd_soft_dirty +1332 lib/../mm/internal.h

76aefad628aae1 Peter Xu   2022-07-25  1329  
f38ee285191813 Barry Song 2024-06-08  1330  static inline bool pmd_needs_soft_dirty_wp(struct vm_area_struct *vma, pmd_t pmd)
f38ee285191813 Barry Song 2024-06-08  1331  {
f38ee285191813 Barry Song 2024-06-08 @1332  	return vma_soft_dirty_enabled(vma) && !pmd_soft_dirty(pmd);
f38ee285191813 Barry Song 2024-06-08  1333  }
f38ee285191813 Barry Song 2024-06-08  1334  
f38ee285191813 Barry Song 2024-06-08  1335  static inline bool pte_needs_soft_dirty_wp(struct vm_area_struct *vma, pte_t pte)
f38ee285191813 Barry Song 2024-06-08  1336  {
f38ee285191813 Barry Song 2024-06-08 @1337  	return vma_soft_dirty_enabled(vma) && !pte_soft_dirty(pte);
f38ee285191813 Barry Song 2024-06-08  1338  }
f38ee285191813 Barry Song 2024-06-08  1339  

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