Messages in this thread | | | Date | Wed, 9 Mar 2022 02:54:00 +0800 | From | kernel test robot <> | Subject | [ammarfaizi2-block:arm64/linux/for-next/misc 5/7] arch/arm64/mm/init.c:90:19: error: conflicting type qualifiers for 'arm64_dma_phys_limit' |
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tree: https://github.com/ammarfaizi2/linux-block arm64/linux/for-next/misc head: 819a47d24b61b5e2d660d19c8798f0f9b4498b73 commit: 031495635b4668f94e964e037ca93d0d38bfde58 [5/7] arm64: Do not defer reserve_crashkernel() for platforms with no DMA memory zones config: arm64-randconfig-r014-20220308 (https://download.01.org/0day-ci/archive/20220309/202203090241.aj7paWeX-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/ammarfaizi2/linux-block/commit/031495635b4668f94e964e037ca93d0d38bfde58 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block arm64/linux/for-next/misc git checkout 031495635b4668f94e964e037ca93d0d38bfde58 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/mm/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
>> arch/arm64/mm/init.c:90:19: error: conflicting type qualifiers for 'arm64_dma_phys_limit' 90 | const phys_addr_t arm64_dma_phys_limit = PHYS_MASK + 1; | ^~~~~~~~~~~~~~~~~~~~ In file included from include/asm-generic/qrwlock.h:14, from ./arch/arm64/include/generated/asm/qrwlock.h:1, from arch/arm64/include/asm/spinlock.h:9, from include/linux/spinlock.h:93, from include/linux/swap.h:5, from arch/arm64/mm/init.c:12: arch/arm64/include/asm/processor.h:102:20: note: previous declaration of 'arm64_dma_phys_limit' with type 'phys_addr_t' {aka 'long long unsigned int'} 102 | extern phys_addr_t arm64_dma_phys_limit; | ^~~~~~~~~~~~~~~~~~~~
vim +/arm64_dma_phys_limit +90 arch/arm64/mm/init.c
57 58 /* 59 * If the corresponding config options are enabled, we create both ZONE_DMA 60 * and ZONE_DMA32. By default ZONE_DMA covers the 32-bit addressable memory 61 * unless restricted on specific platforms (e.g. 30-bit on Raspberry Pi 4). 62 * In such case, ZONE_DMA32 covers the rest of the 32-bit addressable memory, 63 * otherwise it is empty. 64 * 65 * Memory reservation for crash kernel either done early or deferred 66 * depending on DMA memory zones configs (ZONE_DMA) -- 67 * 68 * In absence of ZONE_DMA configs arm64_dma_phys_limit initialized 69 * here instead of max_zone_phys(). This lets early reservation of 70 * crash kernel memory which has a dependency on arm64_dma_phys_limit. 71 * Reserving memory early for crash kernel allows linear creation of block 72 * mappings (greater than page-granularity) for all the memory bank rangs. 73 * In this scheme a comparatively quicker boot is observed. 74 * 75 * If ZONE_DMA configs are defined, crash kernel memory reservation 76 * is delayed until DMA zone memory range size initilazation performed in 77 * zone_sizes_init(). The defer is necessary to steer clear of DMA zone 78 * memory range to avoid overlap allocation. So crash kernel memory boundaries 79 * are not known when mapping all bank memory ranges, which otherwise means 80 * not possible to exclude crash kernel range from creating block mappings 81 * so page-granularity mappings are created for the entire memory range. 82 * Hence a slightly slower boot is observed. 83 * 84 * Note: Page-granularity mapppings are necessary for crash kernel memory 85 * range for shrinking its size via /sys/kernel/kexec_crash_size interface. 86 */ 87 #if IS_ENABLED(CONFIG_ZONE_DMA) || IS_ENABLED(CONFIG_ZONE_DMA32) 88 phys_addr_t __ro_after_init arm64_dma_phys_limit; 89 #else > 90 const phys_addr_t arm64_dma_phys_limit = PHYS_MASK + 1; 91 #endif 92
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