tree: git://git.infradead.org/users/hch/misc.git swiotlb-init-cleanup head: b0a4b60e2b05556a265441d07464d016e160ed50 commit: 12f2fe176ef701bc27dd2bf8061a5f178b547024 [8/11] x86: remove the IOMMU table infrastructure config: i386-randconfig-a002-20220214 (https://download.01.org/0day-ci/archive/20220215/202202150933.VKTRTbyq-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project ea071884b0cc7210b3cc5fe858f0e892a779a23b) 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 git remote add hch-misc git://git.infradead.org/users/hch/misc.git git fetch --no-tags hch-misc swiotlb-init-cleanup git checkout 12f2fe176ef701bc27dd2bf8061a5f178b547024 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from arch/x86/kernel/setup.c:37: return -ENODEV; ^ ~~~~~~~ 1 error generated. -- In file included from arch/x86/kernel/pci-dma.c:15: return -ENODEV; ^ ~~~~~~~ detect_intel_iommu(); ^ int pci_xen_swiotlb_init_late(void) ^ arch/x86/include/asm/xen/swiotlb-xen.h:8:19: note: previous definition is here static inline int pci_xen_swiotlb_init_late(void) { return -ENXIO; } ^ 3 errors generated. vim +/gart_iommu_hole_init +56 arch/x86/include/asm/gart.h 1d9b16d1690fe5 Joerg Roedel 2008-11-27 47 1d9b16d1690fe5 Joerg Roedel 2008-11-27 48 static inline void early_gart_iommu_check(void) 1d9b16d1690fe5 Joerg Roedel 2008-11-27 49 { 1d9b16d1690fe5 Joerg Roedel 2008-11-27 50 } 1d9b16d1690fe5 Joerg Roedel 2008-11-27 51 static inline void gart_parse_options(char *options) 1d9b16d1690fe5 Joerg Roedel 2008-11-27 52 { 1d9b16d1690fe5 Joerg Roedel 2008-11-27 53 } 12f2fe176ef701 Christoph Hellwig 2022-02-14 54 static inline void gart_iommu_hole_init(void) 1d9b16d1690fe5 Joerg Roedel 2008-11-27 55 { 480125ba49ba62 Konrad Rzeszutek Wilk 2010-08-26 @56 return -ENODEV; 1d9b16d1690fe5 Joerg Roedel 2008-11-27 57 } 1d9b16d1690fe5 Joerg Roedel 2008-11-27 58 #endif 1d9b16d1690fe5 Joerg Roedel 2008-11-27 59 :::::: The code at line 56 was first introduced by commit :::::: 480125ba49ba62be93beea37770f266846e077ab x86, iommu: Make all IOMMU's detection routines return a value. :::::: TO: Konrad Rzeszutek Wilk <konrad.wilk(a)oracle.com&gt; :::::: CC: H. Peter Anvin <hpa(a)linux.intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org