From a2b19e6e2d4bb662a64799541c144fd94f8fb024 Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Mon, 8 May 2017 13:31:12 +0200 Subject: [PATCH] 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: Christoffer Dall Reviewed-by: Eric Auger --- virt/kvm/arm/vgic/vgic-its.c | 35 ++++++++++++++++++++++------------- 1 file changed, 22 insertions(+), 13 deletions(-) diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 9aeaff0512d8..2dff288b3a66 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -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; }