Hi Steve, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on vfio/next] [also build test WARNING on v5.11-rc2 next-20210104] [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/Steve-Sistare/vfio-virtual-address-update/20210106-000752 base: https://github.com/awilliam/linux-vfio.git next config: s390-randconfig-r015-20210105 (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 # https://github.com/0day-ci/linux/commit/f680b8156755f4465e94574d5421747561d23749 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Steve-Sistare/vfio-virtual-address-update/20210106-000752 git checkout f680b8156755f4465e94574d5421747561d23749 # 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 >>): >> drivers/vfio/vfio_iommu_type1.c:503:6: warning: no previous prototype for 'vfio_vaddr_valid' [-Wmissing-prototypes] 503 | bool vfio_vaddr_valid(struct vfio_iommu *iommu, struct vfio_dma *dma) | ^~~~~~~~~~~~~~~~ vim +/vfio_vaddr_valid +503 drivers/vfio/vfio_iommu_type1.c 501 502 > 503 bool vfio_vaddr_valid(struct vfio_iommu *iommu, struct vfio_dma *dma) 504 { 505 while (dma->suspended) { 506 mutex_unlock(&iommu->lock); 507 msleep_interruptible(10); 508 mutex_lock(&iommu->lock); 509 if (kthread_should_stop() || !vfio_iommu_contained(iommu) || 510 fatal_signal_pending(current)) { 511 return false; 512 } 513 } 514 return true; 515 } 516 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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