Re: [PATCH 6/9] drm/amdkfd: Validate user queue svm memory residency

On 2024-07-15 08:34, Philip Yang wrote: Queue CWSR area maybe registered to GPU as svm memory, create queue to ensure svm mapped to GPU with KFD_IOCTL_SVM_FLAG_GPU_ALWAYS_MAPPED flag. Add queue_refcount to struct svm_range, to track queue CWSR area usage. Because unmap mmu notifier callback r

[PATCH 6/9] drm/amdkfd: Validate user queue svm memory residency

Queue CWSR area maybe registered to GPU as svm memory, create queue to ensure svm mapped to GPU with KFD_IOCTL_SVM_FLAG_GPU_ALWAYS_MAPPED flag. Add queue_refcount to struct svm_range, to track queue CWSR area usage. Because unmap mmu notifier callback return value is ignored, if application unmap