Re: [PATCH v3 04/11] arm64/mm: Refactor __set_ptes() and __ptep_get_and_clear()

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

Hi Ryan,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.14-rc5 next-20250305]
[cannot apply to arm64/for-next/core akpm-mm/mm-everything arm-perf/for-next/perf]
[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/Ryan-Roberts/arm64-hugetlb-Cleanup-huge_pte-size-discovery-mechanisms/20250304-230647
base:   linus/master
patch link:    https://lore.kernel.org/r/20250304150444.3788920-5-ryan.roberts%40arm.com
patch subject: [PATCH v3 04/11] arm64/mm: Refactor __set_ptes() and __ptep_get_and_clear()
config: arm64-randconfig-001-20250305 (https://download.01.org/0day-ci/archive/20250306/202503061237.QurSXHSC-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250306/202503061237.QurSXHSC-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/202503061237.QurSXHSC-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/arm64/kernel/asm-offsets.c:12:
   In file included from include/linux/ftrace.h:10:
   In file included from include/linux/trace_recursion.h:5:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/arm64/include/asm/hardirq.h:17:
   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/arm64/include/asm/io.h:12:
   In file included from include/linux/pgtable.h:6:
>> arch/arm64/include/asm/pgtable.h:639:7: error: duplicate case value '536870912'
           case PUD_SIZE:
                ^
   include/asm-generic/pgtable-nopud.h:20:20: note: expanded from macro 'PUD_SIZE'
   #define PUD_SIZE        (1UL << PUD_SHIFT)
                           ^
   arch/arm64/include/asm/pgtable.h:636:7: note: previous case defined here
           case PMD_SIZE:
                ^
   include/asm-generic/pgtable-nopmd.h:22:20: note: expanded from macro 'PMD_SIZE'
   #define PMD_SIZE        (1UL << PMD_SHIFT)
                           ^
   In file included from arch/arm64/kernel/asm-offsets.c:12:
   In file included from include/linux/ftrace.h:10:
   In file included from include/linux/trace_recursion.h:5:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/arm64/include/asm/hardirq.h:17:
   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/arm64/include/asm/io.h:12:
   In file included from include/linux/pgtable.h:6:
   arch/arm64/include/asm/pgtable.h:1303:7: error: duplicate case value '536870912'
           case PUD_SIZE:
                ^
   include/asm-generic/pgtable-nopud.h:20:20: note: expanded from macro 'PUD_SIZE'
   #define PUD_SIZE        (1UL << PUD_SHIFT)
                           ^
   arch/arm64/include/asm/pgtable.h:1300:7: note: previous case defined here
           case PMD_SIZE:
                ^
   include/asm-generic/pgtable-nopmd.h:22:20: note: expanded from macro 'PMD_SIZE'
   #define PMD_SIZE        (1UL << PMD_SHIFT)
                           ^
   2 errors generated.
   make[3]: *** [scripts/Makefile.build:102: arch/arm64/kernel/asm-offsets.s] Error 1 shuffle=4064171735
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1264: prepare0] Error 2 shuffle=4064171735
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:251: __sub-make] Error 2 shuffle=4064171735
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:251: __sub-make] Error 2 shuffle=4064171735
   make: Target 'prepare' not remade because of errors.


vim +/536870912 +639 arch/arm64/include/asm/pgtable.h

   626	
   627	static inline void set_ptes_anysz(struct mm_struct *mm, pte_t *ptep, pte_t pte,
   628					  unsigned int nr, unsigned long pgsize)
   629	{
   630		unsigned long stride = pgsize >> PAGE_SHIFT;
   631	
   632		switch (pgsize) {
   633		case PAGE_SIZE:
   634			page_table_check_ptes_set(mm, ptep, pte, nr);
   635			break;
   636		case PMD_SIZE:
   637			page_table_check_pmds_set(mm, (pmd_t *)ptep, pte_pmd(pte), nr);
   638			break;
 > 639		case PUD_SIZE:
   640			page_table_check_puds_set(mm, (pud_t *)ptep, pte_pud(pte), nr);
   641			break;
   642		default:
   643			VM_WARN_ON(1);
   644		}
   645	
   646		__sync_cache_and_tags(pte, nr * stride);
   647	
   648		for (;;) {
   649			__check_safe_pte_update(mm, ptep, pte);
   650			__set_pte(ptep, pte);
   651			if (--nr == 0)
   652				break;
   653			ptep++;
   654			pte = pte_advance_pfn(pte, stride);
   655		}
   656	}
   657	

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