1 files changed, 35 insertions, 47 deletions

diff --git a/virt/kvm/assigned-dev.c b/virt/kvm/assigned-dev.c
index 23a41a9f8db..bf06577fea5 100644
--- a/virt/kvm/assigned-dev.c
+++ b/virt/kvm/assigned-dev.c
@@ -80,11 +80,12 @@ kvm_assigned_dev_raise_guest_irq(struct kvm_assigned_dev_kernel *assigned_dev,
 		spin_lock(&assigned_dev->intx_mask_lock);
 		if (!(assigned_dev->flags & KVM_DEV_ASSIGN_MASK_INTX))
 			kvm_set_irq(assigned_dev->kvm,
-				    assigned_dev->irq_source_id, vector, 1);
+				    assigned_dev->irq_source_id, vector, 1,
+				    false);
 		spin_unlock(&assigned_dev->intx_mask_lock);
 	} else
 		kvm_set_irq(assigned_dev->kvm, assigned_dev->irq_source_id,
-			    vector, 1);
+			    vector, 1, false);
 }
 
 static irqreturn_t kvm_assigned_dev_thread_intx(int irq, void *dev_id)
@@ -105,6 +106,15 @@ static irqreturn_t kvm_assigned_dev_thread_intx(int irq, void *dev_id)
 }
 
 #ifdef __KVM_HAVE_MSI
+static irqreturn_t kvm_assigned_dev_msi(int irq, void *dev_id)
+{
+	struct kvm_assigned_dev_kernel *assigned_dev = dev_id;
+	int ret = kvm_set_irq_inatomic(assigned_dev->kvm,
+				       assigned_dev->irq_source_id,
+				       assigned_dev->guest_irq, 1);
+	return unlikely(ret == -EWOULDBLOCK) ? IRQ_WAKE_THREAD : IRQ_HANDLED;
+}
+
 static irqreturn_t kvm_assigned_dev_thread_msi(int irq, void *dev_id)
 {
 	struct kvm_assigned_dev_kernel *assigned_dev = dev_id;
@@ -117,6 +127,23 @@ static irqreturn_t kvm_assigned_dev_thread_msi(int irq, void *dev_id)
 #endif
 
 #ifdef __KVM_HAVE_MSIX
+static irqreturn_t kvm_assigned_dev_msix(int irq, void *dev_id)
+{
+	struct kvm_assigned_dev_kernel *assigned_dev = dev_id;
+	int index = find_index_from_host_irq(assigned_dev, irq);
+	u32 vector;
+	int ret = 0;
+
+	if (index >= 0) {
+		vector = assigned_dev->guest_msix_entries[index].vector;
+		ret = kvm_set_irq_inatomic(assigned_dev->kvm,
+					   assigned_dev->irq_source_id,
+					   vector, 1);
+	}
+
+	return unlikely(ret == -EWOULDBLOCK) ? IRQ_WAKE_THREAD : IRQ_HANDLED;
+}
+
 static irqreturn_t kvm_assigned_dev_thread_msix(int irq, void *dev_id)
 {
 	struct kvm_assigned_dev_kernel *assigned_dev = dev_id;
@@ -139,7 +166,7 @@ static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian)
 		container_of(kian, struct kvm_assigned_dev_kernel,
 			     ack_notifier);
 
-	kvm_set_irq(dev->kvm, dev->irq_source_id, dev->guest_irq, 0);
+	kvm_set_irq(dev->kvm, dev->irq_source_id, dev->guest_irq, 0, false);
 
 	spin_lock(&dev->intx_mask_lock);
 
@@ -162,7 +189,7 @@ static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian)
 
 		if (reassert)
 			kvm_set_irq(dev->kvm, dev->irq_source_id,
-				    dev->guest_irq, 1);
+				    dev->guest_irq, 1, false);
 	}
 
 	spin_unlock(&dev->intx_mask_lock);
@@ -176,7 +203,7 @@ static void deassign_guest_irq(struct kvm *kvm,
 						&assigned_dev->ack_notifier);
 
 	kvm_set_irq(assigned_dev->kvm, assigned_dev->irq_source_id,
-		    assigned_dev->guest_irq, 0);
+		    assigned_dev->guest_irq, 0, false);
 
 	if (assigned_dev->irq_source_id != -1)
 		kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id);
@@ -334,11 +361,6 @@ static int assigned_device_enable_host_intx(struct kvm *kvm,
 }
 
 #ifdef __KVM_HAVE_MSI
-static irqreturn_t kvm_assigned_dev_msi(int irq, void *dev_id)
-{
-	return IRQ_WAKE_THREAD;
-}
-
 static int assigned_device_enable_host_msi(struct kvm *kvm,
 					   struct kvm_assigned_dev_kernel *dev)
 {
@@ -363,11 +385,6 @@ static int assigned_device_enable_host_msi(struct kvm *kvm,
 #endif
 
 #ifdef __KVM_HAVE_MSIX
-static irqreturn_t kvm_assigned_dev_msix(int irq, void *dev_id)
-{
-	return IRQ_WAKE_THREAD;
-}
-
 static int assigned_device_enable_host_msix(struct kvm *kvm,
 					    struct kvm_assigned_dev_kernel *dev)
 {
@@ -378,7 +395,8 @@ static int assigned_device_enable_host_msix(struct kvm *kvm,
 	if (dev->entries_nr == 0)
 		return r;
 
-	r = pci_enable_msix(dev->dev, dev->host_msix_entries, dev->entries_nr);
+	r = pci_enable_msix_exact(dev->dev,
+				  dev->host_msix_entries, dev->entries_nr);
 	if (r)
 		return r;
 
@@ -885,7 +903,7 @@ static int kvm_vm_ioctl_set_pci_irq_mask(struct kvm *kvm,
 	if (match->irq_requested_type & KVM_DEV_IRQ_GUEST_INTX) {
 		if (assigned_dev->flags & KVM_DEV_ASSIGN_MASK_INTX) {
 			kvm_set_irq(match->kvm, match->irq_source_id,
-				    match->guest_irq, 0);
+				    match->guest_irq, 0, false);
 			/*
 			 * Masking at hardware-level is performed on demand,
 			 * i.e. when an IRQ actually arrives at the host.
@@ -966,36 +984,6 @@ long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
 			goto out;
 		break;
 	}
-#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;