Hi Uros, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvm/master] [also build test ERROR on mst-vhost/linux-next linux/master linus/master v5.18-rc7 next-20220518] [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/intel-lab-lkp/linux/commits/Uros-Bizjak/KVM-VMX-Use-try_cmpxchg64-in-pi_try_set_control/20220518-214709 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git master config: i386-debian-10.3-kselftests (https://download.01.org/0day-ci/archive/20220519/202205190852.VUijQkwc-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/2af4f7c4ecfcaedf9b98ba30ee508dc0d9002955 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Uros-Bizjak/KVM-VMX-Use-try_cmpxchg64-in-pi_try_set_control/20220518-214709 git checkout 2af4f7c4ecfcaedf9b98ba30ee508dc0d9002955 # save the config file mkdir build_dir && cp config build_dir/.config make 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 errors (new ones prefixed by >>): arch/x86/kvm/vmx/posted_intr.c: In function 'pi_try_set_control': >> arch/x86/kvm/vmx/posted_intr.c:45:14: error: implicit declaration of function 'try_cmpxchg64'; did you mean 'try_cmpxchg'? [-Werror=implicit-function-declaration] 45 | if (!try_cmpxchg64(&pi_desc->control, pold, new)) | ^~~~~~~~~~~~~ | try_cmpxchg cc1: some warnings being treated as errors vim +45 arch/x86/kvm/vmx/posted_intr.c 36 37 static int pi_try_set_control(struct pi_desc *pi_desc, u64 *pold, u64 new) 38 { 39 /* 40 * PID.ON can be set at any time by a different vCPU or by hardware, 41 * e.g. a device. PID.control must be written atomically, and the 42 * update must be retried with a fresh snapshot an ON change causes 43 * the cmpxchg to fail. 44 */ > 45 if (!try_cmpxchg64(&pi_desc->control, pold, new)) 46 return -EBUSY; 47 48 return 0; 49 } 50 -- 0-DAY CI Kernel Test Service https://01.org/lkp
