tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: e7bc79687a034a22f94328123d5cf8c4d4436c35 commit: a8078c65197c6f2034431a431780538c7c324f79 [14662/15255] virtcca feature: bind the kvm handle of cvm with smmu domain config: x86_64-kexec (https://download.01.org/0day-ci/archive/20241023/202410231921.YFrtM1y8-lkp@i...) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241023/202410231921.YFrtM1y8-lkp@i...)

If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot lkp@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202410231921.YFrtM1y8-lkp@intel.com/

All warnings (new ones prefixed by >>):

...

arch/x86/kvm/../../../virt/kvm/vfio.c:184: warning: Function parameter or member 'kv' not described in 'cvm_vfio_add_kvm_to_smmu_domain' arch/x86/kvm/../../../virt/kvm/vfio.c:184: warning: Excess function parameter 'kvm' description in 'cvm_vfio_add_kvm_to_smmu_domain'

vim +184 arch/x86/kvm/../../../virt/kvm/vfio.c

172 173 /** 174 * cvm_vfio_add_kvm_to_smmu_domain - Bind the confidential 175 * virtual machine to smmu domain 176 * @filp: The handle of file 177 * @kvm: The kvm belone to confidential virtual machine 178 * 179 * Returns: 180 * %-ENXIO if set kvm failed or iommu group is null 181 * %0 if set kvm success 182 */ 183 static int cvm_vfio_add_kvm_to_smmu_domain(struct file *filp, struct kvm_vfio *kv)

184 {

185 struct iommu_group *iommu_group; 186 int ret = 0; 187 188 if (!is_virtcca_cvm_enable()) 189 return ret; 190 191 mutex_unlock(&kv->lock); 192 iommu_group = cvm_vfio_file_iommu_group(filp); 193 if (!iommu_group) { 194 ret = -ENXIO; 195 goto out_lock; 196 } 197 if (cvm_arm_smmu_domain_set_kvm((void *)iommu_group)) { 198 ret = -ENXIO; 199 goto out_lock; 200 } 201 202 out_lock: 203 mutex_lock(&kv->lock); 204 return ret; 205 } 206 #endif 207