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charset=UTF-8 Content-Transfer-Encoding: 8bit X-ZohoMailClient: External 24.09.2026 12:55, Honglei Huang пишет: > +int virtio_gpu_userptr_create(struct virtio_gpu_device *vgdev, > + struct drm_file *file, > + struct virtio_gpu_object_params *params, > + struct virtio_gpu_object **bo_ptr) > +{ > + struct virtio_gpu_object_userptr *userptr; > + struct virtio_gpu_mem_entry *ents = NULL; > + struct sg_table *sgt; > + struct mm_struct *mm; > + unsigned long lock_limit; > + unsigned long start; > + unsigned long end; > + s64 new_pinned; > + unsigned int nents; > + int ret; > + > + *bo_ptr = NULL; > + > + if (!params->size || !IS_ALIGNED(params->size, PAGE_SIZE) || > + params->userptr != (unsigned long)params->userptr) > + return -EINVAL; > + > + start = params->userptr; > + if (!IS_ALIGNED(start, PAGE_SIZE) || > + check_add_overflow(start, (unsigned long)params->size, &end)) > + return -EINVAL; There is new vgdev->blob_alignment defining host page size as it may differ from guest's page. Will be good to validate both. -- Best regards, Dmitry