[arm64:devel/kmalloc-minalign 1/17] arch/powerpc/include/asm/page_32.h:16: warning: "ARCH_DMA_MINALIGN" redefined

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git devel/kmalloc-minalign
head:   b862c01a97ef575e8d5f018e542dbd30ddc524b9
commit: 9c5a142fe1e2aeb1a1821eb79b39edd09bbb0078 [1/17] mm/slab: Decouple ARCH_KMALLOC_MINALIGN from ARCH_DMA_MINALIGN
config: powerpc-rainier_defconfig (https://download.01.org/0day-ci/archive/20230613/202306131011.OGbdy4PK-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 12.3.0
reproduce (this is a W=1 build):
        mkdir -p ~/bin
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/commit/?id=9c5a142fe1e2aeb1a1821eb79b39edd09bbb0078
        git remote add arm64 https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
        git fetch --no-tags arm64 devel/kmalloc-minalign
        git checkout 9c5a142fe1e2aeb1a1821eb79b39edd09bbb0078
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=powerpc prepare

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/202306131011.OGbdy4PK-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/powerpc/include/asm/page.h:247,
                    from arch/powerpc/include/asm/thread_info.h:13,
                    from include/linux/thread_info.h:60,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/powerpc/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from include/linux/spinlock.h:56,
                    from include/linux/ipc.h:5,
                    from include/uapi/linux/sem.h:5,
                    from include/linux/sem.h:5,
                    from include/linux/compat.h:14,
                    from arch/powerpc/kernel/asm-offsets.c:12:
>> arch/powerpc/include/asm/page_32.h:16: warning: "ARCH_DMA_MINALIGN" redefined
      16 | #define ARCH_DMA_MINALIGN       L1_CACHE_BYTES
         | 
   In file included from include/linux/time.h:5,
                    from include/linux/compat.h:10:
   include/linux/cache.h:104: note: this is the location of the previous definition
     104 | #define ARCH_DMA_MINALIGN __alignof__(unsigned long long)
         | 
--
   In file included from arch/powerpc/include/asm/page.h:247,
                    from arch/powerpc/include/asm/thread_info.h:13,
                    from include/linux/thread_info.h:60,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/powerpc/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from include/linux/spinlock.h:56,
                    from include/linux/ipc.h:5,
                    from include/uapi/linux/sem.h:5,
                    from include/linux/sem.h:5,
                    from include/linux/compat.h:14,
                    from arch/powerpc/kernel/asm-offsets.c:12:
>> arch/powerpc/include/asm/page_32.h:16: warning: "ARCH_DMA_MINALIGN" redefined
      16 | #define ARCH_DMA_MINALIGN       L1_CACHE_BYTES
         | 
   In file included from include/linux/time.h:5,
                    from include/linux/compat.h:10:
   include/linux/cache.h:104: note: this is the location of the previous definition
     104 | #define ARCH_DMA_MINALIGN __alignof__(unsigned long long)
         | 


vim +/ARCH_DMA_MINALIGN +16 arch/powerpc/include/asm/page_32.h

5cd16ee934eafc include/asm-powerpc/page_32.h      Michael Ellerman       2005-11-11  14  
52142e756e9bf6 include/asm-powerpc/page_32.h      Benjamin Herrenschmidt 2007-11-19  15  #ifdef CONFIG_NOT_COHERENT_CACHE
a6eb9fe105d5de arch/powerpc/include/asm/page_32.h FUJITA Tomonori        2010-08-10 @16  #define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
52142e756e9bf6 include/asm-powerpc/page_32.h      Benjamin Herrenschmidt 2007-11-19  17  #endif
52142e756e9bf6 include/asm-powerpc/page_32.h      Benjamin Herrenschmidt 2007-11-19  18  

:::::: The code at line 16 was first introduced by commit
:::::: a6eb9fe105d5de0053b261148cee56c94b4720ca dma-mapping: rename ARCH_KMALLOC_MINALIGN to ARCH_DMA_MINALIGN

:::::: TO: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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