diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/x86.c | 86 |
1 files changed, 45 insertions, 41 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index c8a2793..61eddbe 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -166,6 +166,43 @@ static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian) enable_irq(dev->host_irq); } +static void kvm_free_assigned_device(struct kvm *kvm, + struct kvm_assigned_dev_kernel + *assigned_dev) +{ + if (irqchip_in_kernel(kvm) && assigned_dev->irq_requested) + free_irq(assigned_dev->host_irq, (void *)assigned_dev); + + kvm_unregister_irq_ack_notifier(kvm, &assigned_dev->ack_notifier); + + if (cancel_work_sync(&assigned_dev->interrupt_work)) + /* We had pending work. That means we will have to take + * care of kvm_put_kvm. + */ + kvm_put_kvm(kvm); + + pci_release_regions(assigned_dev->dev); + pci_disable_device(assigned_dev->dev); + pci_dev_put(assigned_dev->dev); + + list_del(&assigned_dev->list); + kfree(assigned_dev); +} + +static void kvm_free_all_assigned_devices(struct kvm *kvm) +{ + struct list_head *ptr, *ptr2; + struct kvm_assigned_dev_kernel *assigned_dev; + + list_for_each_safe(ptr, ptr2, &kvm->arch.assigned_dev_head) { + assigned_dev = list_entry(ptr, + struct kvm_assigned_dev_kernel, + list); + + kvm_free_assigned_device(kvm, assigned_dev); + } +} + static int kvm_vm_ioctl_assign_irq(struct kvm *kvm, struct kvm_assigned_irq *assigned_irq) @@ -194,8 +231,8 @@ static int kvm_vm_ioctl_assign_irq(struct kvm *kvm, if (irqchip_in_kernel(kvm)) { if (!capable(CAP_SYS_RAWIO)) { - return -EPERM; - goto out; + r = -EPERM; + goto out_release; } if (assigned_irq->host_irq) @@ -214,17 +251,18 @@ static int kvm_vm_ioctl_assign_irq(struct kvm *kvm, */ if (request_irq(match->host_irq, kvm_assigned_dev_intr, 0, "kvm_assigned_device", (void *)match)) { - printk(KERN_INFO "%s: couldn't allocate irq for pv " - "device\n", __func__); r = -EIO; - goto out; + goto out_release; } } match->irq_requested = true; -out: mutex_unlock(&kvm->lock); return r; +out_release: + mutex_unlock(&kvm->lock); + kvm_free_assigned_device(kvm, match); + return r; } static int kvm_vm_ioctl_assign_device(struct kvm *kvm, @@ -300,40 +338,6 @@ out_free: return r; } -static void kvm_free_assigned_devices(struct kvm *kvm) -{ - struct list_head *ptr, *ptr2; - struct kvm_assigned_dev_kernel *assigned_dev; - - list_for_each_safe(ptr, ptr2, &kvm->arch.assigned_dev_head) { - assigned_dev = list_entry(ptr, - struct kvm_assigned_dev_kernel, - list); - - if (irqchip_in_kernel(kvm) && assigned_dev->irq_requested) { - free_irq(assigned_dev->host_irq, - (void *)assigned_dev); - - kvm_unregister_irq_ack_notifier(kvm, - &assigned_dev-> - ack_notifier); - } - - if (cancel_work_sync(&assigned_dev->interrupt_work)) - /* We had pending work. That means we will have to take - * care of kvm_put_kvm. - */ - kvm_put_kvm(kvm); - - pci_release_regions(assigned_dev->dev); - pci_disable_device(assigned_dev->dev); - pci_dev_put(assigned_dev->dev); - - list_del(&assigned_dev->list); - kfree(assigned_dev); - } -} - unsigned long segment_base(u16 selector) { struct descriptor_table gdt; @@ -4296,7 +4300,7 @@ static void kvm_free_vcpus(struct kvm *kvm) void kvm_arch_destroy_vm(struct kvm *kvm) { kvm_iommu_unmap_guest(kvm); - kvm_free_assigned_devices(kvm); + kvm_free_all_assigned_devices(kvm); kvm_free_pit(kvm); kfree(kvm->arch.vpic); kfree(kvm->arch.vioapic); |