KVM: Move assigned device code to own file

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 2 insertions, 796 deletions

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index c12c95b1b64..38e4d2c34ac 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -53,12 +53,6 @@
 #include "coalesced_mmio.h"
 #endif
 
-#ifdef KVM_CAP_DEVICE_ASSIGNMENT
-#include <linux/pci.h>
-#include <linux/interrupt.h>
-#include "irq.h"
-#endif
-
 #define CREATE_TRACE_POINTS
 #include <trace/events/kvm.h>
 
@@ -90,608 +84,6 @@ static bool kvm_rebooting;
 
 static bool largepages_enabled = true;
 
-#ifdef KVM_CAP_DEVICE_ASSIGNMENT
-static struct kvm_assigned_dev_kernel *kvm_find_assigned_dev(struct list_head *head,
-						      int assigned_dev_id)
-{
-	struct list_head *ptr;
-	struct kvm_assigned_dev_kernel *match;
-
-	list_for_each(ptr, head) {
-		match = list_entry(ptr, struct kvm_assigned_dev_kernel, list);
-		if (match->assigned_dev_id == assigned_dev_id)
-			return match;
-	}
-	return NULL;
-}
-
-static int find_index_from_host_irq(struct kvm_assigned_dev_kernel
-				    *assigned_dev, int irq)
-{
-	int i, index;
-	struct msix_entry *host_msix_entries;
-
-	host_msix_entries = assigned_dev->host_msix_entries;
-
-	index = -1;
-	for (i = 0; i < assigned_dev->entries_nr; i++)
-		if (irq == host_msix_entries[i].vector) {
-			index = i;
-			break;
-		}
-	if (index < 0) {
-		printk(KERN_WARNING "Fail to find correlated MSI-X entry!\n");
-		return 0;
-	}
-
-	return index;
-}
-
-static void kvm_assigned_dev_interrupt_work_handler(struct work_struct *work)
-{
-	struct kvm_assigned_dev_kernel *assigned_dev;
-	struct kvm *kvm;
-	int i;
-
-	assigned_dev = container_of(work, struct kvm_assigned_dev_kernel,
-				    interrupt_work);
-	kvm = assigned_dev->kvm;
-
-	spin_lock_irq(&assigned_dev->assigned_dev_lock);
-	if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSIX) {
-		struct kvm_guest_msix_entry *guest_entries =
-			assigned_dev->guest_msix_entries;
-		for (i = 0; i < assigned_dev->entries_nr; i++) {
-			if (!(guest_entries[i].flags &
-					KVM_ASSIGNED_MSIX_PENDING))
-				continue;
-			guest_entries[i].flags &= ~KVM_ASSIGNED_MSIX_PENDING;
-			kvm_set_irq(assigned_dev->kvm,
-				    assigned_dev->irq_source_id,
-				    guest_entries[i].vector, 1);
-		}
-	} else
-		kvm_set_irq(assigned_dev->kvm, assigned_dev->irq_source_id,
-			    assigned_dev->guest_irq, 1);
-
-	spin_unlock_irq(&assigned_dev->assigned_dev_lock);
-}
-
-static irqreturn_t kvm_assigned_dev_intr(int irq, void *dev_id)
-{
-	unsigned long flags;
-	struct kvm_assigned_dev_kernel *assigned_dev =
-		(struct kvm_assigned_dev_kernel *) dev_id;
-
-	spin_lock_irqsave(&assigned_dev->assigned_dev_lock, flags);
-	if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSIX) {
-		int index = find_index_from_host_irq(assigned_dev, irq);
-		if (index < 0)
-			goto out;
-		assigned_dev->guest_msix_entries[index].flags |=
-			KVM_ASSIGNED_MSIX_PENDING;
-	}
-
-	schedule_work(&assigned_dev->interrupt_work);
-
-	if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_GUEST_INTX) {
-		disable_irq_nosync(irq);
-		assigned_dev->host_irq_disabled = true;
-	}
-
-out:
-	spin_unlock_irqrestore(&assigned_dev->assigned_dev_lock, flags);
-	return IRQ_HANDLED;
-}
-
-/* Ack the irq line for an assigned device */
-static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian)
-{
-	struct kvm_assigned_dev_kernel *dev;
-	unsigned long flags;
-
-	if (kian->gsi == -1)
-		return;
-
-	dev = container_of(kian, struct kvm_assigned_dev_kernel,
-			   ack_notifier);
-
-	kvm_set_irq(dev->kvm, dev->irq_source_id, dev->guest_irq, 0);
-
-	/* The guest irq may be shared so this ack may be
-	 * from another device.
-	 */
-	spin_lock_irqsave(&dev->assigned_dev_lock, flags);
-	if (dev->host_irq_disabled) {
-		enable_irq(dev->host_irq);
-		dev->host_irq_disabled = false;
-	}
-	spin_unlock_irqrestore(&dev->assigned_dev_lock, flags);
-}
-
-static void deassign_guest_irq(struct kvm *kvm,
-			       struct kvm_assigned_dev_kernel *assigned_dev)
-{
-	kvm_unregister_irq_ack_notifier(kvm, &assigned_dev->ack_notifier);
-	assigned_dev->ack_notifier.gsi = -1;
-
-	if (assigned_dev->irq_source_id != -1)
-		kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id);
-	assigned_dev->irq_source_id = -1;
-	assigned_dev->irq_requested_type &= ~(KVM_DEV_IRQ_GUEST_MASK);
-}
-
-/* The function implicit hold kvm->lock mutex due to cancel_work_sync() */
-static void deassign_host_irq(struct kvm *kvm,
-			      struct kvm_assigned_dev_kernel *assigned_dev)
-{
-	/*
-	 * In kvm_free_device_irq, cancel_work_sync return true if:
-	 * 1. work is scheduled, and then cancelled.
-	 * 2. work callback is executed.
-	 *
-	 * The first one ensured that the irq is disabled and no more events
-	 * would happen. But for the second one, the irq may be enabled (e.g.
-	 * for MSI). So we disable irq here to prevent further events.
-	 *
-	 * Notice this maybe result in nested disable if the interrupt type is
-	 * INTx, but it's OK for we are going to free it.
-	 *
-	 * If this function is a part of VM destroy, please ensure that till
-	 * now, the kvm state is still legal for probably we also have to wait
-	 * interrupt_work done.
-	 */
-	if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSIX) {
-		int i;
-		for (i = 0; i < assigned_dev->entries_nr; i++)
-			disable_irq_nosync(assigned_dev->
-					   host_msix_entries[i].vector);
-
-		cancel_work_sync(&assigned_dev->interrupt_work);
-
-		for (i = 0; i < assigned_dev->entries_nr; i++)
-			free_irq(assigned_dev->host_msix_entries[i].vector,
-				 (void *)assigned_dev);
-
-		assigned_dev->entries_nr = 0;
-		kfree(assigned_dev->host_msix_entries);
-		kfree(assigned_dev->guest_msix_entries);
-		pci_disable_msix(assigned_dev->dev);
-	} else {
-		/* Deal with MSI and INTx */
-		disable_irq_nosync(assigned_dev->host_irq);
-		cancel_work_sync(&assigned_dev->interrupt_work);
-
-		free_irq(assigned_dev->host_irq, (void *)assigned_dev);
-
-		if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSI)
-			pci_disable_msi(assigned_dev->dev);
-	}
-
-	assigned_dev->irq_requested_type &= ~(KVM_DEV_IRQ_HOST_MASK);
-}
-
-static int kvm_deassign_irq(struct kvm *kvm,
-			    struct kvm_assigned_dev_kernel *assigned_dev,
-			    unsigned long irq_requested_type)
-{
-	unsigned long guest_irq_type, host_irq_type;
-
-	if (!irqchip_in_kernel(kvm))
-		return -EINVAL;
-	/* no irq assignment to deassign */
-	if (!assigned_dev->irq_requested_type)
-		return -ENXIO;
-
-	host_irq_type = irq_requested_type & KVM_DEV_IRQ_HOST_MASK;
-	guest_irq_type = irq_requested_type & KVM_DEV_IRQ_GUEST_MASK;
-
-	if (host_irq_type)
-		deassign_host_irq(kvm, assigned_dev);
-	if (guest_irq_type)
-		deassign_guest_irq(kvm, assigned_dev);
-
-	return 0;
-}
-
-static void kvm_free_assigned_irq(struct kvm *kvm,
-				  struct kvm_assigned_dev_kernel *assigned_dev)
-{
-	kvm_deassign_irq(kvm, assigned_dev, assigned_dev->irq_requested_type);
-}
-
-static void kvm_free_assigned_device(struct kvm *kvm,
-				     struct kvm_assigned_dev_kernel
-				     *assigned_dev)
-{
-	kvm_free_assigned_irq(kvm, assigned_dev);
-
-	pci_reset_function(assigned_dev->dev);
-
-	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);
-}
-
-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 assigned_device_enable_host_intx(struct kvm *kvm,
-					    struct kvm_assigned_dev_kernel *dev)
-{
-	dev->host_irq = dev->dev->irq;
-	/* Even though this is PCI, we don't want to use shared
-	 * interrupts. Sharing host devices with guest-assigned devices
-	 * on the same interrupt line is not a happy situation: there
-	 * are going to be long delays in accepting, acking, etc.
-	 */
-	if (request_irq(dev->host_irq, kvm_assigned_dev_intr,
-			0, "kvm_assigned_intx_device", (void *)dev))
-		return -EIO;
-	return 0;
-}
-
-#ifdef __KVM_HAVE_MSI
-static int assigned_device_enable_host_msi(struct kvm *kvm,
-					   struct kvm_assigned_dev_kernel *dev)
-{
-	int r;
-
-	if (!dev->dev->msi_enabled) {
-		r = pci_enable_msi(dev->dev);
-		if (r)
-			return r;
-	}
-
-	dev->host_irq = dev->dev->irq;
-	if (request_irq(dev->host_irq, kvm_assigned_dev_intr, 0,
-			"kvm_assigned_msi_device", (void *)dev)) {
-		pci_disable_msi(dev->dev);
-		return -EIO;
-	}
-
-	return 0;
-}
-#endif
-
-#ifdef __KVM_HAVE_MSIX
-static int assigned_device_enable_host_msix(struct kvm *kvm,
-					    struct kvm_assigned_dev_kernel *dev)
-{
-	int i, r = -EINVAL;
-
-	/* host_msix_entries and guest_msix_entries should have been
-	 * initialized */
-	if (dev->entries_nr == 0)
-		return r;
-
-	r = pci_enable_msix(dev->dev, dev->host_msix_entries, dev->entries_nr);
-	if (r)
-		return r;
-
-	for (i = 0; i < dev->entries_nr; i++) {
-		r = request_irq(dev->host_msix_entries[i].vector,
-				kvm_assigned_dev_intr, 0,
-				"kvm_assigned_msix_device",
-				(void *)dev);
-		/* FIXME: free requested_irq's on failure */
-		if (r)
-			return r;
-	}
-
-	return 0;
-}
-
-#endif
-
-static int assigned_device_enable_guest_intx(struct kvm *kvm,
-				struct kvm_assigned_dev_kernel *dev,
-				struct kvm_assigned_irq *irq)
-{
-	dev->guest_irq = irq->guest_irq;
-	dev->ack_notifier.gsi = irq->guest_irq;
-	return 0;
-}
-
-#ifdef __KVM_HAVE_MSI
-static int assigned_device_enable_guest_msi(struct kvm *kvm,
-			struct kvm_assigned_dev_kernel *dev,
-			struct kvm_assigned_irq *irq)
-{
-	dev->guest_irq = irq->guest_irq;
-	dev->ack_notifier.gsi = -1;
-	dev->host_irq_disabled = false;
-	return 0;
-}
-#endif
-#ifdef __KVM_HAVE_MSIX
-static int assigned_device_enable_guest_msix(struct kvm *kvm,
-			struct kvm_assigned_dev_kernel *dev,
-			struct kvm_assigned_irq *irq)
-{
-	dev->guest_irq = irq->guest_irq;
-	dev->ack_notifier.gsi = -1;
-	dev->host_irq_disabled = false;
-	return 0;
-}
-#endif
-
-static int assign_host_irq(struct kvm *kvm,
-			   struct kvm_assigned_dev_kernel *dev,
-			   __u32 host_irq_type)
-{
-	int r = -EEXIST;
-
-	if (dev->irq_requested_type & KVM_DEV_IRQ_HOST_MASK)
-		return r;
-
-	switch (host_irq_type) {
-	case KVM_DEV_IRQ_HOST_INTX:
-		r = assigned_device_enable_host_intx(kvm, dev);
-		break;
-#ifdef __KVM_HAVE_MSI
-	case KVM_DEV_IRQ_HOST_MSI:
-		r = assigned_device_enable_host_msi(kvm, dev);
-		break;
-#endif
-#ifdef __KVM_HAVE_MSIX
-	case KVM_DEV_IRQ_HOST_MSIX:
-		r = assigned_device_enable_host_msix(kvm, dev);
-		break;
-#endif
-	default:
-		r = -EINVAL;
-	}
-
-	if (!r)
-		dev->irq_requested_type |= host_irq_type;
-
-	return r;
-}
-
-static int assign_guest_irq(struct kvm *kvm,
-			    struct kvm_assigned_dev_kernel *dev,
-			    struct kvm_assigned_irq *irq,
-			    unsigned long guest_irq_type)
-{
-	int id;
-	int r = -EEXIST;
-
-	if (dev->irq_requested_type & KVM_DEV_IRQ_GUEST_MASK)
-		return r;
-
-	id = kvm_request_irq_source_id(kvm);
-	if (id < 0)
-		return id;
-
-	dev->irq_source_id = id;
-
-	switch (guest_irq_type) {
-	case KVM_DEV_IRQ_GUEST_INTX:
-		r = assigned_device_enable_guest_intx(kvm, dev, irq);
-		break;
-#ifdef __KVM_HAVE_MSI
-	case KVM_DEV_IRQ_GUEST_MSI:
-		r = assigned_device_enable_guest_msi(kvm, dev, irq);
-		break;
-#endif
-#ifdef __KVM_HAVE_MSIX
-	case KVM_DEV_IRQ_GUEST_MSIX:
-		r = assigned_device_enable_guest_msix(kvm, dev, irq);
-		break;
-#endif
-	default:
-		r = -EINVAL;
-	}
-
-	if (!r) {
-		dev->irq_requested_type |= guest_irq_type;
-		kvm_register_irq_ack_notifier(kvm, &dev->ack_notifier);
-	} else
-		kvm_free_irq_source_id(kvm, dev->irq_source_id);
-
-	return r;
-}
-
-/* TODO Deal with KVM_DEV_IRQ_ASSIGNED_MASK_MSIX */
-static int kvm_vm_ioctl_assign_irq(struct kvm *kvm,
-				   struct kvm_assigned_irq *assigned_irq)
-{
-	int r = -EINVAL;
-	struct kvm_assigned_dev_kernel *match;
-	unsigned long host_irq_type, guest_irq_type;
-
-	if (!capable(CAP_SYS_RAWIO))
-		return -EPERM;
-
-	if (!irqchip_in_kernel(kvm))
-		return r;
-
-	mutex_lock(&kvm->lock);
-	r = -ENODEV;
-	match = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
-				      assigned_irq->assigned_dev_id);
-	if (!match)
-		goto out;
-
-	host_irq_type = (assigned_irq->flags & KVM_DEV_IRQ_HOST_MASK);
-	guest_irq_type = (assigned_irq->flags & KVM_DEV_IRQ_GUEST_MASK);
-
-	r = -EINVAL;
-	/* can only assign one type at a time */
-	if (hweight_long(host_irq_type) > 1)
-		goto out;
-	if (hweight_long(guest_irq_type) > 1)
-		goto out;
-	if (host_irq_type == 0 && guest_irq_type == 0)
-		goto out;
-
-	r = 0;
-	if (host_irq_type)
-		r = assign_host_irq(kvm, match, host_irq_type);
-	if (r)
-		goto out;
-
-	if (guest_irq_type)
-		r = assign_guest_irq(kvm, match, assigned_irq, guest_irq_type);
-out:
-	mutex_unlock(&kvm->lock);
-	return r;
-}
-
-static int kvm_vm_ioctl_deassign_dev_irq(struct kvm *kvm,
-					 struct kvm_assigned_irq
-					 *assigned_irq)
-{
-	int r = -ENODEV;
-	struct kvm_assigned_dev_kernel *match;
-
-	mutex_lock(&kvm->lock);
-
-	match = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
-				      assigned_irq->assigned_dev_id);
-	if (!match)
-		goto out;
-
-	r = kvm_deassign_irq(kvm, match, assigned_irq->flags);
-out:
-	mutex_unlock(&kvm->lock);
-	return r;
-}
-
-static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
-				      struct kvm_assigned_pci_dev *assigned_dev)
-{
-	int r = 0;
-	struct kvm_assigned_dev_kernel *match;
-	struct pci_dev *dev;
-
-	down_read(&kvm->slots_lock);
-	mutex_lock(&kvm->lock);
-
-	match = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
-				      assigned_dev->assigned_dev_id);
-	if (match) {
-		/* device already assigned */
-		r = -EEXIST;
-		goto out;
-	}
-
-	match = kzalloc(sizeof(struct kvm_assigned_dev_kernel), GFP_KERNEL);
-	if (match == NULL) {
-		printk(KERN_INFO "%s: Couldn't allocate memory\n",
-		       __func__);
-		r = -ENOMEM;
-		goto out;
-	}
-	dev = pci_get_bus_and_slot(assigned_dev->busnr,
-				   assigned_dev->devfn);
-	if (!dev) {
-		printk(KERN_INFO "%s: host device not found\n", __func__);
-		r = -EINVAL;
-		goto out_free;
-	}
-	if (pci_enable_device(dev)) {
-		printk(KERN_INFO "%s: Could not enable PCI device\n", __func__);
-		r = -EBUSY;
-		goto out_put;
-	}
-	r = pci_request_regions(dev, "kvm_assigned_device");
-	if (r) {
-		printk(KERN_INFO "%s: Could not get access to device regions\n",
-		       __func__);
-		goto out_disable;
-	}
-
-	pci_reset_function(dev);
-
-	match->assigned_dev_id = assigned_dev->assigned_dev_id;
-	match->host_busnr = assigned_dev->busnr;
-	match->host_devfn = assigned_dev->devfn;
-	match->flags = assigned_dev->flags;
-	match->dev = dev;
-	spin_lock_init(&match->assigned_dev_lock);
-	match->irq_source_id = -1;
-	match->kvm = kvm;
-	match->ack_notifier.irq_acked = kvm_assigned_dev_ack_irq;
-	INIT_WORK(&match->interrupt_work,
-		  kvm_assigned_dev_interrupt_work_handler);
-
-	list_add(&match->list, &kvm->arch.assigned_dev_head);
-
-	if (assigned_dev->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU) {
-		if (!kvm->arch.iommu_domain) {
-			r = kvm_iommu_map_guest(kvm);
-			if (r)
-				goto out_list_del;
-		}
-		r = kvm_assign_device(kvm, match);
-		if (r)
-			goto out_list_del;
-	}
-
-out:
-	mutex_unlock(&kvm->lock);
-	up_read(&kvm->slots_lock);
-	return r;
-out_list_del:
-	list_del(&match->list);
-	pci_release_regions(dev);
-out_disable:
-	pci_disable_device(dev);
-out_put:
-	pci_dev_put(dev);
-out_free:
-	kfree(match);
-	mutex_unlock(&kvm->lock);
-	up_read(&kvm->slots_lock);
-	return r;
-}
-#endif
-
-#ifdef KVM_CAP_DEVICE_DEASSIGNMENT
-static int kvm_vm_ioctl_deassign_device(struct kvm *kvm,
-		struct kvm_assigned_pci_dev *assigned_dev)
-{
-	int r = 0;
-	struct kvm_assigned_dev_kernel *match;
-
-	mutex_lock(&kvm->lock);
-
-	match = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
-				      assigned_dev->assigned_dev_id);
-	if (!match) {
-		printk(KERN_INFO "%s: device hasn't been assigned before, "
-		  "so cannot be deassigned\n", __func__);
-		r = -EINVAL;
-		goto out;
-	}
-
-	if (match->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU)
-		kvm_deassign_device(kvm, match);
-
-	kvm_free_assigned_device(kvm, match);
-
-out:
-	mutex_unlock(&kvm->lock);
-	return r;
-}
-#endif
-
 inline int kvm_is_mmio_pfn(pfn_t pfn)
 {
 	if (pfn_valid(pfn)) {
@@ -1824,88 +1216,6 @@ static int kvm_vcpu_ioctl_set_sigmask(struct kvm_vcpu *vcpu, sigset_t *sigset)
 	return 0;
 }
 
-#ifdef __KVM_HAVE_MSIX
-static int kvm_vm_ioctl_set_msix_nr(struct kvm *kvm,
-				    struct kvm_assigned_msix_nr *entry_nr)
-{
-	int r = 0;
-	struct kvm_assigned_dev_kernel *adev;
-
-	mutex_lock(&kvm->lock);
-
-	adev = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
-				      entry_nr->assigned_dev_id);
-	if (!adev) {
-		r = -EINVAL;
-		goto msix_nr_out;
-	}
-
-	if (adev->entries_nr == 0) {
-		adev->entries_nr = entry_nr->entry_nr;
-		if (adev->entries_nr == 0 ||
-		    adev->entries_nr >= KVM_MAX_MSIX_PER_DEV) {
-			r = -EINVAL;
-			goto msix_nr_out;
-		}
-
-		adev->host_msix_entries = kzalloc(sizeof(struct msix_entry) *
-						entry_nr->entry_nr,
-						GFP_KERNEL);
-		if (!adev->host_msix_entries) {
-			r = -ENOMEM;
-			goto msix_nr_out;
-		}
-		adev->guest_msix_entries = kzalloc(
-				sizeof(struct kvm_guest_msix_entry) *
-				entry_nr->entry_nr, GFP_KERNEL);
-		if (!adev->guest_msix_entries) {
-			kfree(adev->host_msix_entries);
-			r = -ENOMEM;
-			goto msix_nr_out;
-		}
-	} else /* Not allowed set MSI-X number twice */
-		r = -EINVAL;
-msix_nr_out:
-	mutex_unlock(&kvm->lock);
-	return r;
-}
-
-static int kvm_vm_ioctl_set_msix_entry(struct kvm *kvm,
-				       struct kvm_assigned_msix_entry *entry)
-{
-	int r = 0, i;
-	struct kvm_assigned_dev_kernel *adev;
-
-	mutex_lock(&kvm->lock);
-
-	adev = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
-				      entry->assigned_dev_id);
-
-	if (!adev) {
-		r = -EINVAL;
-		goto msix_entry_out;
-	}
-
-	for (i = 0; i < adev->entries_nr; i++)
-		if (adev->guest_msix_entries[i].vector == 0 ||
-		    adev->guest_msix_entries[i].entry == entry->entry) {
-			adev->guest_msix_entries[i].entry = entry->entry;
-			adev->guest_msix_entries[i].vector = entry->gsi;
-			adev->host_msix_entries[i].entry = entry->entry;
-			break;
-		}
-	if (i == adev->entries_nr) {
-		r = -ENOSPC;
-		goto msix_entry_out;
-	}
-
-msix_entry_out:
-	mutex_unlock(&kvm->lock);
-
-	return r;
-}
-#endif
-
 static long kvm_vcpu_ioctl(struct file *filp,
 			   unsigned int ioctl, unsigned long arg)
 {
@@ -2164,112 +1474,6 @@ static long kvm_vm_ioctl(struct file *filp,
 		break;
 	}
 #endif
-#ifdef KVM_CAP_DEVICE_ASSIGNMENT
-	case KVM_ASSIGN_PCI_DEVICE: {
-		struct kvm_assigned_pci_dev assigned_dev;
-
-		r = -EFAULT;
-		if (copy_from_user(&assigned_dev, argp, sizeof assigned_dev))
-			goto out;
-		r = kvm_vm_ioctl_assign_device(kvm, &assigned_dev);
-		if (r)
-			goto out;
-		break;
-	}
-	case KVM_ASSIGN_IRQ: {
-		r = -EOPNOTSUPP;
-		break;
-	}
-#ifdef KVM_CAP_ASSIGN_DEV_IRQ
-	case KVM_ASSIGN_DEV_IRQ: {
-		struct kvm_assigned_irq assigned_irq;
-
-		r = -EFAULT;
-		if (copy_from_user(&assigned_irq, argp, sizeof assigned_irq))
-			goto out;
-		r = kvm_vm_ioctl_assign_irq(kvm, &assigned_irq);
-		if (r)
-			goto out;
-		break;
-	}
-	case KVM_DEASSIGN_DEV_IRQ: {
-		struct kvm_assigned_irq assigned_irq;
-
-		r = -EFAULT;
-		if (copy_from_user(&assigned_irq, argp, sizeof assigned_irq))
-			goto out;
-		r = kvm_vm_ioctl_deassign_dev_irq(kvm, &assigned_irq);
-		if (r)
-			goto out;
-		break;
-	}
-#endif
-#endif
-#ifdef KVM_CAP_DEVICE_DEASSIGNMENT
-	case KVM_DEASSIGN_PCI_DEVICE: {
-		struct kvm_assigned_pci_dev assigned_dev;
-
-		r = -EFAULT;
-		if (copy_from_user(&assigned_dev, argp, sizeof assigned_dev))
-			goto out;
-		r = kvm_vm_ioctl_deassign_device(kvm, &assigned_dev);
-		if (r)
-			goto out;
-		break;
-	}
-#endif
-#ifdef KVM_CAP_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 /* KVM_CAP_IRQ_ROUTING */
-#ifdef __KVM_HAVE_MSIX
-	case KVM_ASSIGN_SET_MSIX_NR: {
-		struct kvm_assigned_msix_nr entry_nr;
-		r = -EFAULT;
-		if (copy_from_user(&entry_nr, argp, sizeof entry_nr))
-			goto out;
-		r = kvm_vm_ioctl_set_msix_nr(kvm, &entry_nr);
-		if (r)
-			goto out;
-		break;
-	}
-	case KVM_ASSIGN_SET_MSIX_ENTRY: {
-		struct kvm_assigned_msix_entry entry;
-		r = -EFAULT;
-		if (copy_from_user(&entry, argp, sizeof entry))
-			goto out;
-		r = kvm_vm_ioctl_set_msix_entry(kvm, &entry);
-		if (r)
-			goto out;
-		break;
-	}
-#endif
 	case KVM_IRQFD: {
 		struct kvm_irqfd data;
 
@@ -2301,6 +1505,8 @@ static long kvm_vm_ioctl(struct file *filp,
 #endif
 	default:
 		r = kvm_arch_vm_ioctl(filp, ioctl, arg);
+		if (r == -ENOTTY)
+			r = kvm_vm_ioctl_assigned_device(kvm, ioctl, arg);
 	}
 out:
 	return r;