tree: https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git hyperv-next head: 63cd06c67a2f46009da6e88ca46f9c7231ab8998 commit: f16dc95481e2ef2c385008f8b7bd382ea6919ee2 [1/5] swiotlb: Add swiotlb bounce buffer remap function for HV IVM config: i386-randconfig-a001-20211219 (https://download.01.org/0day-ci/archive/20211220/202112202102.zfnhbn2Q-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 683cbc12b33e5c8dc8d29bf5ed79fbf45763aadd) 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://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/commit/?... git remote add hyperv https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git git fetch --no-tags hyperv hyperv-next git checkout f16dc95481e2ef2c385008f8b7bd382ea6919ee2 # 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 kernel/dma/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): >> kernel/dma/swiotlb.c:176:11: warning: format specifies type 'unsigned long long' but the argument has type 'phys_addr_t' (aka 'unsigned int') [-Wformat] paddr, bytes); ^~~~~ include/linux/printk.h:493:33: note: expanded from macro 'pr_err' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/printk.h:450:60: note: expanded from macro 'printk' #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/printk.h:422:19: note: expanded from macro 'printk_index_wrap' _p_func(_fmt, ##__VA_ARGS__); \ ~~~~ ^~~~~~~~~~~ 1 warning generated. vim +176 kernel/dma/swiotlb.c 160 161 /* 162 * Remap swioltb memory in the unencrypted physical address space 163 * when swiotlb_unencrypted_base is set. (e.g. for Hyper-V AMD SEV-SNP 164 * Isolation VMs). 165 */ 166 static void *swiotlb_mem_remap(struct io_tlb_mem *mem, unsigned long bytes) 167 { 168 void *vaddr = NULL; 169 170 if (swiotlb_unencrypted_base) { 171 phys_addr_t paddr = mem->start + swiotlb_unencrypted_base; 172 173 vaddr = memremap(paddr, bytes, MEMREMAP_WB); 174 if (!vaddr) 175 pr_err("Failed to map the unencrypted memory %llx size %lx.\n", > 176 paddr, bytes);