Hi Mario, Thank you for the patch! Yet something to improve: [auto build test ERROR on joro-iommu/next] [also build test ERROR on arm-perf/for-next/perf linus/master v5.17-rc8 next-20220315] [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] url: https://github.com/0day-ci/linux/commits/Mario-Limonciello/iommu-amd-Add-support-to-indicate-whether-DMA-remap-support-is-enabled/20220316-002821 base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20220316/202203160844.lKviWR1Q-lkp@xxxxxxxxx/config) compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04) 9.4.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/fa63035401902e438c5ef3213112901a1054c621 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mario-Limonciello/iommu-amd-Add-support-to-indicate-whether-DMA-remap-support-is-enabled/20220316-002821 git checkout fa63035401902e438c5ef3213112901a1054c621 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/iommu/amd/init.c:3294:6: error: redefinition of 'amd_ivrs_remap_support' 3294 | bool amd_ivrs_remap_support(void) | ^~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/iommu/amd/init.c:20: include/linux/amd-iommu.h:198:20: note: previous definition of 'amd_ivrs_remap_support' was here 198 | static inline bool amd_ivrs_remap_support(void) | ^~~~~~~~~~~~~~~~~~~~~~ vim +/amd_ivrs_remap_support +3294 drivers/iommu/amd/init.c 3284 3285 /* 3286 * ivrs_remap_support - Is %IOMMU_IVINFO_DMA_REMAP set in IVRS table 3287 * 3288 * Returns true if the platform has %IOMMU_IVINFO_DMA_REMAP% set in the IOMMU 3289 * IVRS IVInfo field. 3290 * Presence of this flag indicates to the OS/HV that the IOMMU is used for 3291 * Preboot DMA protection and device accessed memory should be remapped after 3292 * the OS has loaded. 3293 */ > 3294 bool amd_ivrs_remap_support(void) 3295 { 3296 return amdr_ivrs_remap_support; 3297 } 3298 EXPORT_SYMBOL_GPL(amd_ivrs_remap_support); 3299 --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx