diff --git a/include/linux/pci.h b/include/linux/pci.h
index f27893b3b724205b3411e9081b99b4ca8e4429c2..d8c8573ecc213b77123fef8484b5978560321b5b 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -174,6 +174,8 @@ enum pci_dev_flags {
 	PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1,
 	/* Device configuration is irrevocably lost if disabled into D3 */
 	PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
+	/* Provide indication device is assigned by a Virtual Machine Manager */
+	PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4,
 };
 
 enum pci_irq_reroute_variant {
diff --git a/virt/kvm/assigned-dev.c b/virt/kvm/assigned-dev.c
index 4e9eaeb518c7b863f9acc70d13d046edb67f4a04..eaf3a50f976947560ee9a9e4827cbe71d2879d11 100644
--- a/virt/kvm/assigned-dev.c
+++ b/virt/kvm/assigned-dev.c
@@ -205,6 +205,8 @@ static void kvm_free_assigned_device(struct kvm *kvm,
 	else
 		pci_restore_state(assigned_dev->dev);
 
+	assigned_dev->dev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
+
 	pci_release_regions(assigned_dev->dev);
 	pci_disable_device(assigned_dev->dev);
 	pci_dev_put(assigned_dev->dev);
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c
index 78c80f67f535f97055d312aa946c109bcfdcd424..967aba133a624c38dee5b61cbb9b1376b767f228 100644
--- a/virt/kvm/iommu.c
+++ b/virt/kvm/iommu.c
@@ -187,6 +187,8 @@ int kvm_assign_device(struct kvm *kvm,
 			goto out_unmap;
 	}
 
+	pdev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED;
+
 	printk(KERN_DEBUG "assign device %x:%x:%x.%x\n",
 		assigned_dev->host_segnr,
 		assigned_dev->host_busnr,
@@ -215,6 +217,8 @@ int kvm_deassign_device(struct kvm *kvm,
 
 	iommu_detach_device(domain, &pdev->dev);
 
+	pdev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
+
 	printk(KERN_DEBUG "deassign device %x:%x:%x.%x\n",
 		assigned_dev->host_segnr,
 		assigned_dev->host_busnr,