Hi "Matthew, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linux/master] [also build test WARNING on linus/master v5.12-rc7] [cannot apply to hnaz-linux-mm/master next-20210416] [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/Matthew-Wilcox-Oracle/Change-struct-page-layout-for-page_pool/20210417-070951 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5e46d1b78a03d52306f21f77a4e4a144b6d31486 config: parisc-randconfig-s031-20210416 (attached as .config) compiler: hppa-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-280-g2cd6d34e-dirty # https://github.com/0day-ci/linux/commit/898e155048088be20b2606575a24108eacc4c91b git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Matthew-Wilcox-Oracle/Change-struct-page-layout-for-page_pool/20210417-070951 git checkout 898e155048088be20b2606575a24108eacc4c91b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from net/core/xdp.c:15: include/net/page_pool.h: In function 'page_pool_get_dma_addr': >> include/net/page_pool.h:203:40: warning: left shift count >= width of type [-Wshift-count-overflow] 203 | ret |= (dma_addr_t)page->dma_addr[1] << 32; | ^~ include/net/page_pool.h: In function 'page_pool_set_dma_addr': >> include/net/page_pool.h:211:28: warning: right shift count >= width of type [-Wshift-count-overflow] 211 | page->dma_addr[1] = addr >> 32; | ^~ vim +203 include/net/page_pool.h 198 199 static inline dma_addr_t page_pool_get_dma_addr(struct page *page) 200 { 201 dma_addr_t ret = page->dma_addr[0]; 202 if (sizeof(dma_addr_t) > sizeof(unsigned long)) > 203 ret |= (dma_addr_t)page->dma_addr[1] << 32; 204 return ret; 205 } 206 207 static inline void page_pool_set_dma_addr(struct page *page, dma_addr_t addr) 208 { 209 page->dma_addr[0] = addr; 210 if (sizeof(dma_addr_t) > sizeof(unsigned long)) > 211 page->dma_addr[1] = addr >> 32; 212 } 213 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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