1 files changed, 30 insertions, 0 deletions

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 2c3b226bc13b..b6f33547b3db 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2274,6 +2274,36 @@ static long kvm_vm_ioctl(struct file *filp,
                 break;
         }
 #endif
+#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
+        case KVM_SET_GSI_ROUTING: {
+                struct kvm_irq_routing routing;
+                struct kvm_irq_routing __user *urouting;
+                struct kvm_irq_routing_entry *entries;
+
+                r = -EFAULT;
+                if (copy_from_user(&routing, argp, sizeof(routing)))
+                        goto out;
+                r = -EINVAL;
+                if (routing.nr >= KVM_MAX_IRQ_ROUTES)
+                        goto out;
+                if (routing.flags)
+                        goto out;
+                r = -ENOMEM;
+                entries = vmalloc(routing.nr * sizeof(*entries));
+                if (!entries)
+                        goto out;
+                r = -EFAULT;
+                urouting = argp;
+                if (copy_from_user(entries, urouting->entries,
+                                   routing.nr * sizeof(*entries)))
+                        goto out_free_irq_routing;
+                r = kvm_set_irq_routing(kvm, entries, routing.nr,
+                                        routing.flags);
+        out_free_irq_routing:
+                vfree(entries);
+                break;
+        }
+#endif /* CONFIG_HAVE_KVM_IRQ_ROUTING */
         default:
                 r = kvm_arch_vm_ioctl(filp, ioctl, arg);
                 if (r == -ENOTTY)