Hi Tony, I love your patch! Perhaps something to improve: [auto build test WARNING on kvms390/next] [also build test WARNING on linus/master v5.7] [cannot apply to s390/features linux/master next-20200605] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Tony-Krowiak/s390-vfio-ap-dynamic-configuration-support/20200606-054350 base: https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git next config: s390-allyesconfig (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>, old ones prefixed by <<): drivers/s390/crypto/vfio_ap_ops.c:52:23: warning: no previous prototype for 'vfio_ap_get_mdev_queue' [-Wmissing-prototypes] 52 | struct vfio_ap_queue *vfio_ap_get_mdev_queue(struct ap_matrix_mdev *matrix_mdev, | ^~~~~~~~~~~~~~~~~~~~~~ drivers/s390/crypto/vfio_ap_ops.c:142:24: warning: no previous prototype for 'vfio_ap_irq_disable' [-Wmissing-prototypes] 142 | struct ap_queue_status vfio_ap_irq_disable(struct vfio_ap_queue *q) | ^~~~~~~~~~~~~~~~~~~ drivers/s390/crypto/vfio_ap_ops.c:1484:5: warning: no previous prototype for 'vfio_ap_mdev_reset_queue' [-Wmissing-prototypes] 1484 | int vfio_ap_mdev_reset_queue(unsigned int apid, unsigned int apqi, | ^~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/s390/crypto/vfio_ap_ops.c:1746:6: warning: no previous prototype for 'vfio_ap_mdev_unassign_apids' [-Wmissing-prototypes] 1746 | bool vfio_ap_mdev_unassign_apids(struct ap_matrix_mdev *matrix_mdev, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/s390/crypto/vfio_ap_ops.c:1779:6: warning: no previous prototype for 'vfio_ap_mdev_unassign_apqis' [-Wmissing-prototypes] 1779 | bool vfio_ap_mdev_unassign_apqis(struct ap_matrix_mdev *matrix_mdev, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/vfio_ap_mdev_unassign_apids +1746 drivers/s390/crypto/vfio_ap_ops.c 1733 1734 /** 1735 * vfio_ap_mdev_unassign_apids 1736 * 1737 * @matrix_mdev: The matrix mediated device 1738 * 1739 * @aqm: A bitmap with 256 bits. Each bit in the map represents an APID from 0 1740 * to 255 (with the leftmost bit corresponding to APID 0). 1741 * 1742 * Unassigns each APID specified in @aqm that is assigned to the shadow CRYCB 1743 * of @matrix_mdev. Returns true if at least one APID is unassigned; otherwise, 1744 * returns false. 1745 */ > 1746 bool vfio_ap_mdev_unassign_apids(struct ap_matrix_mdev *matrix_mdev, 1747 unsigned long *apm_unassign) 1748 { 1749 unsigned long apid; 1750 bool unassigned = false; 1751 1752 /* 1753 * If the matrix mdev is not in use by a KVM guest, return indicating 1754 * that no APIDs have been unassigned. 1755 */ 1756 if (!vfio_ap_mdev_has_crycb(matrix_mdev)) 1757 return false; 1758 1759 for_each_set_bit_inv(apid, apm_unassign, AP_DEVICES) { 1760 unassigned |= vfio_ap_mdev_unassign_guest_apid(matrix_mdev, 1761 apid); 1762 } 1763 1764 return unassigned; 1765 } 1766 1767 /** 1768 * vfio_ap_mdev_unassign_apqis 1769 * 1770 * @matrix_mdev: The matrix mediated device 1771 * 1772 * @aqm: A bitmap with 256 bits. Each bit in the map represents an APQI from 0 1773 * to 255 (with the leftmost bit corresponding to APQI 0). 1774 * 1775 * Unassigns each APQI specified in @aqm that is assigned to the shadow CRYCB 1776 * of @matrix_mdev. Returns true if at least one APQI is unassigned; otherwise, 1777 * returns false. 1778 */ > 1779 bool vfio_ap_mdev_unassign_apqis(struct ap_matrix_mdev *matrix_mdev, 1780 unsigned long *aqm_unassign) 1781 { 1782 unsigned long apqi; 1783 bool unassigned = false; 1784 1785 /* 1786 * If the matrix mdev is not in use by a KVM guest, return indicating 1787 * that no APQIs have been unassigned. 1788 */ 1789 if (!vfio_ap_mdev_has_crycb(matrix_mdev)) 1790 return false; 1791 1792 for_each_set_bit_inv(apqi, aqm_unassign, AP_DOMAINS) { 1793 unassigned |= vfio_ap_mdev_unassign_guest_apqi(matrix_mdev, 1794 apqi); 1795 } 1796 1797 return unassigned; 1798 } 1799 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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