On 8/25/23 4:17 PM, Tian, Kevin wrote:
+static void assert_no_pending_iopf(struct device *dev, ioasid_t pasid) +{ + struct iommu_fault_param *iopf_param = dev->iommu-fault_param;+ struct iopf_fault *iopf; + + if (!iopf_param) + return; + + mutex_lock(&iopf_param->lock); + list_for_each_entry(iopf, &iopf_param->partial, list) { + if (WARN_ON(iopf->fault.prm.pasid == pasid)) + break; + }partial list is protected by dev_iommu lock.
Ah, do you mind elaborating a bit more? In my mind, partial list is protected by dev_iommu->fault_param->lock. Best regards, baolu
