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: x86_64-randconfig-a015 (https://download.01.org/0day-ci/archive/20220301/202203010934.3Jekh58R-lkp@xxxxxxxxx/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # 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 make W=1 O=build_dir ARCH=x86_64 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 'kvm_xen_init_timer' [-Wmissing-prototypes] 183 | void kvm_xen_init_timer(struct kvm_vcpu *vcpu) | ^~~~~~~~~~~~~~~~~~ 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
