Commit a2b19e6e authored by Christoffer Dall's avatar Christoffer Dall
Browse files

KVM: arm/arm64: vgic-its: Cleanup after failed ITT restore 



When failing to restore the ITT for a DTE, we should remove the failed
device entry from the list and free the object.

We slightly refactor vgic_its_destroy to be able to reuse the now
separate vgic_its_free_dte() function.

Signed-off-by: default avatarChristoffer Dall <cdall@linaro.org>
Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
parent 67723c25

virt/kvm/arm/vgic/vgic-its.c

+22 −13
Original line number Diff line number Diff line
@@ -1613,13 +1613,20 @@ static int vgic_its_create(struct kvm_device *dev, u32 type) 
	return vgic_its_set_abi(its, NR_ITS_ABIS - 1);

}



static void vgic_its_free_device(struct kvm *kvm, struct its_device *dev)

{

	struct its_ite *ite, *tmp;



	list_for_each_entry_safe(ite, tmp, &dev->itt_head, ite_list)

		its_free_ite(kvm, ite);

	list_del(&dev->dev_list);

	kfree(dev);

}



static void vgic_its_destroy(struct kvm_device *kvm_dev)

{

	struct kvm *kvm = kvm_dev->kvm;

	struct vgic_its *its = kvm_dev->private;

	struct its_device *dev;

	struct its_ite *ite;

	struct list_head *dev_cur, *dev_temp;

	struct list_head *cur, *temp;



	/*
@@ -1630,19 +1637,19 @@ static void vgic_its_destroy(struct kvm_device *kvm_dev) 
		return;



	mutex_lock(&its->its_lock);

	list_for_each_safe(dev_cur, dev_temp, &its->device_list) {

		dev = container_of(dev_cur, struct its_device, dev_list);

		list_for_each_safe(cur, temp, &dev->itt_head) {

			ite = (container_of(cur, struct its_ite, ite_list));

			its_free_ite(kvm, ite);

		}

		list_del(dev_cur);

		kfree(dev);

	list_for_each_safe(cur, temp, &its->device_list) {

		struct its_device *dev;



		dev = list_entry(cur, struct its_device, dev_list);

		vgic_its_free_device(kvm, dev);

	}



	list_for_each_safe(cur, temp, &its->collection_list) {

		struct its_collection *coll;



		coll = list_entry(cur, struct its_collection, coll_list);

		list_del(cur);

		kfree(container_of(cur, struct its_collection, coll_list));

		kfree(coll);

	}

	mutex_unlock(&its->its_lock);
@@ -2012,8 +2019,10 @@ static int vgic_its_restore_dte(struct vgic_its *its, u32 id, 
		return PTR_ERR(dev);



	ret = vgic_its_restore_itt(its, dev);

	if (ret)

	if (ret) {

		vgic_its_free_device(its->dev->kvm, dev);

		return ret;

	}



	return offset;

}

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