Hi Longpeng(Mike), Thank you for the patch! Yet something to improve: [auto build test ERROR on v6.2] [cannot apply to mst-vhost/linux-next linus/master] [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/Longpeng-Mike/vdpa-support-specify-the-pgprot-of-vq-notification-area/20230227-172516 patch link: https://lore.kernel.org/r/20230227091857.2406-3-longpeng2%40huawei.com patch subject: [PATCH v4 2/2] vdpasim: support doorbell mapping config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20230228/202302280613.0lyqDCJr-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 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://github.com/intel-lab-lkp/linux/commit/a472c7ad92f68b5b596fd68e1936b2d47fe2ea0b git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Longpeng-Mike/vdpa-support-specify-the-pgprot-of-vq-notification-area/20230227-172516 git checkout a472c7ad92f68b5b596fd68e1936b2d47fe2ea0b # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202302280613.0lyqDCJr-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: drivers/vdpa/vdpa_sim/vdpa_sim.o: in function `vdpasim_notify_work': >> vdpa_sim.c:(.text+0x12d0): undefined reference to `__bad_xchg' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization