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15 May 2024 20:31:27 -0700 Received: from kbuild by f8b243fe6e68 with local (Exim 4.96) (envelope-from ) id 1s7Rq0-000DZo-2b; Thu, 16 May 2024 03:31:24 +0000 Date: Thu, 16 May 2024 11:31:20 +0800 From: kernel test robot To: Ronak Doshi , netdev@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, Ronak Doshi , Broadcom internal kernel review list , Eric Dumazet , Jakub Kicinski , Paolo Abeni , open list Subject: Re: [PATCH net-next 2/4] vmxnet3: add latency measurement support in vmxnet3 Message-ID: <202405161123.iWtQjhIw-lkp@intel.com> References: <20240514182050.20931-3-ronak.doshi@broadcom.com> Precedence: bulk X-Mailing-List: linux-kernel@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: <20240514182050.20931-3-ronak.doshi@broadcom.com> Hi Ronak, kernel test robot noticed the following build warnings: [auto build test WARNING on net-next/main] url: https://github.com/intel-lab-lkp/linux/commits/Ronak-Doshi/vmxnet3-prepare-for-version-9-changes/20240515-023833 base: net-next/main patch link: https://lore.kernel.org/r/20240514182050.20931-3-ronak.doshi%40broadcom.com patch subject: [PATCH net-next 2/4] vmxnet3: add latency measurement support in vmxnet3 config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20240516/202405161123.iWtQjhIw-lkp@intel.com/config) compiler: loongarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240516/202405161123.iWtQjhIw-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/202405161123.iWtQjhIw-lkp@intel.com/ All warnings (new ones prefixed by >>): In function 'vmxnet3_get_cycles', inlined from 'vmxnet3_rq_rx_complete' at drivers/net/vmxnet3/vmxnet3_drv.c:1675:25: >> drivers/net/vmxnet3/vmxnet3_drv.c:151:9: warning: 'asm' operand 2 probably does not match constraints 151 | asm volatile("rdpmc" : "=a" (low), "=d" (high) : "c" (pmc)); | ^~~ drivers/net/vmxnet3/vmxnet3_drv.c:151:9: error: impossible constraint in 'asm' In function 'vmxnet3_get_cycles', inlined from 'vmxnet3_tq_xmit.isra' at drivers/net/vmxnet3/vmxnet3_drv.c:1316:28: >> drivers/net/vmxnet3/vmxnet3_drv.c:151:9: warning: 'asm' operand 2 probably does not match constraints 151 | asm volatile("rdpmc" : "=a" (low), "=d" (high) : "c" (pmc)); | ^~~ vim +/asm +151 drivers/net/vmxnet3/vmxnet3_drv.c 145 146 static u64 147 vmxnet3_get_cycles(int pmc) 148 { 149 u32 low, high; 150 > 151 asm volatile("rdpmc" : "=a" (low), "=d" (high) : "c" (pmc)); 152 return (low | ((u_int64_t)high << 32)); 153 } 154 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki