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Tsirkin" , Jason Wang , Xuan Zhuo , Eric Dumazet , Jakub Kicinski , Paolo Abeni , netdev@vger.kernel.org Subject: Re: [PATCH vhost v1 4/7] virtio_net: big mode support premapped Message-ID: <202404221325.SX5ChRGP-lkp@intel.com> References: <20240422015403.72526-5-xuanzhuo@linux.alibaba.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240422015403.72526-5-xuanzhuo@linux.alibaba.com> Hi Xuan, kernel test robot noticed the following build warnings: [auto build test WARNING on mst-vhost/linux-next] [also build test WARNING on linus/master v6.9-rc5 next-20240419] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Xuan-Zhuo/virtio_ring-introduce-dma-map-api-for-page/20240422-101017 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next patch link: https://lore.kernel.org/r/20240422015403.72526-5-xuanzhuo%40linux.alibaba.com patch subject: [PATCH vhost v1 4/7] virtio_net: big mode support premapped config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20240422/202404221325.SX5ChRGP-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240422/202404221325.SX5ChRGP-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202404221325.SX5ChRGP-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/net/virtio_net.c: In function 'page_chain_get_dma': >> drivers/net/virtio_net.c:468:30: warning: left shift count >= width of type [-Wshift-count-overflow] 468 | return (addr << 32) + p->dma_addr; | ^~ vim +468 drivers/net/virtio_net.c 461 462 static dma_addr_t page_chain_get_dma(struct page *p) 463 { 464 dma_addr_t addr; 465 466 if (sizeof(dma_addr_t) > sizeof(unsigned long)) { 467 addr = p->pp_magic; > 468 return (addr << 32) + p->dma_addr; 469 } else { 470 return p->dma_addr; 471 } 472 } 473 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki