Hi David, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on kvm/master] [also build test WARNING on v5.17-rc6 next-20220228] [cannot apply to mst-vhost/linux-next] [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/David-Woodhouse/KVM-Add-Xen-event-channel-acceleration/20220301-040936 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git master config: i386-randconfig-a004-20220228 (https://download.01.org/0day-ci/archive/20220301/202203010834.0rk7I4n5-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) 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/0day-ci/linux/commit/9e28d0cae6d7075379c9afdd36f014227c6a7553 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review David-Woodhouse/KVM-Add-Xen-event-channel-acceleration/20220301-040936 git checkout 9e28d0cae6d7075379c9afdd36f014227c6a7553 # 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 arch/x86/kvm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> arch/x86/kvm/xen.c:183:6: warning: no previous prototype for function 'kvm_xen_init_timer' [-Wmissing-prototypes] void kvm_xen_init_timer(struct kvm_vcpu *vcpu) ^ arch/x86/kvm/xen.c:183:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void kvm_xen_init_timer(struct kvm_vcpu *vcpu) ^ static >> arch/x86/kvm/xen.c:1030:41: warning: shift count >= width of type [-Wshift-count-overflow] (delta > 0 && (uint32_t) (delta >> 50) != 0))) { ^ ~~ include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ 2 warnings generated. vim +/kvm_xen_init_timer +183 arch/x86/kvm/xen.c 182 > 183 void kvm_xen_init_timer(struct kvm_vcpu *vcpu) 184 { 185 hrtimer_init(&vcpu->arch.xen.timer, CLOCK_MONOTONIC, 186 HRTIMER_MODE_ABS_PINNED); 187 vcpu->arch.xen.timer.function = xen_timer_callback; 188 } 189 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
