diff --git a/arch/sparc64/kernel/pci_common.c b/arch/sparc64/kernel/pci_common.c
index 2f61c4b1259..c76bfbb7da0 100644
--- a/arch/sparc64/kernel/pci_common.c
+++ b/arch/sparc64/kernel/pci_common.c
@@ -264,7 +264,7 @@ static int sun4v_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
 	unsigned int func = PCI_FUNC(devfn);
 	unsigned long ret;
 
-	if (bus_dev == pbm->pci_bus && devfn == 0x00)
+	if (!bus && devfn == 0x00)
 		return pci_host_bridge_read_pci_cfg(bus_dev, devfn, where,
 						    size, value);
 	if (config_out_of_range(pbm, bus, devfn, where)) {
@@ -300,7 +300,7 @@ static int sun4v_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
 	unsigned int func = PCI_FUNC(devfn);
 	unsigned long ret;
 
-	if (bus_dev == pbm->pci_bus && devfn == 0x00)
+	if (!bus && devfn == 0x00)
 		return pci_host_bridge_write_pci_cfg(bus_dev, devfn, where,
 						     size, value);
 	if (config_out_of_range(pbm, bus, devfn, where)) {
diff --git a/arch/sparc64/kernel/prom.c b/arch/sparc64/kernel/prom.c
index 0614dff63d7..a246e962e5a 100644
--- a/arch/sparc64/kernel/prom.c
+++ b/arch/sparc64/kernel/prom.c
@@ -1046,7 +1046,8 @@ static void __init irq_trans_init(struct device_node *dp)
 	if (!strcmp(dp->name, "fhc") &&
 	    !strcmp(dp->parent->name, "central"))
 		return central_irq_trans_init(dp);
-	if (!strcmp(dp->name, "virtual-devices"))
+	if (!strcmp(dp->name, "virtual-devices") ||
+	    !strcmp(dp->name, "niu"))
 		return sun4v_vdev_irq_trans_init(dp);
 }
 
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index b84c49e3697..c73b7a48b03 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -353,6 +353,8 @@ static int __devinit smp_boot_one_cpu(unsigned int cpu)
 	int timeout, ret;
 
 	p = fork_idle(cpu);
+	if (IS_ERR(p))
+		return PTR_ERR(p);
 	callin_flag = 0;
 	cpu_new_thread = task_thread_info(p);
 
diff --git a/arch/sparc64/kernel/vio.c b/arch/sparc64/kernel/vio.c
index 1550ac5673d..0c1ee619d81 100644
--- a/arch/sparc64/kernel/vio.c
+++ b/arch/sparc64/kernel/vio.c
@@ -292,7 +292,7 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
 	}
 	vdev->dp = dp;
 
-	printk(KERN_ERR "VIO: Adding device %s\n", vdev->dev.bus_id);
+	printk(KERN_INFO "VIO: Adding device %s\n", vdev->dev.bus_id);
 
 	err = device_register(&vdev->dev);
 	if (err) {
@@ -342,8 +342,33 @@ static struct mdesc_notifier_client vio_device_notifier = {
 	.node_name	= "virtual-device-port",
 };
 
+/* We are only interested in domain service ports under the
+ * "domain-services" node.  On control nodes there is another port
+ * under "openboot" that we should not mess with as aparently that is
+ * reserved exclusively for OBP use.
+ */
+static void vio_add_ds(struct mdesc_handle *hp, u64 node)
+{
+	int found;
+	u64 a;
+
+	found = 0;
+	mdesc_for_each_arc(a, hp, node, MDESC_ARC_TYPE_BACK) {
+		u64 target = mdesc_arc_target(hp, a);
+		const char *name = mdesc_node_name(hp, target);
+
+		if (!strcmp(name, "domain-services")) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (found)
+		(void) vio_create_one(hp, node, &root_vdev->dev);
+}
+
 static struct mdesc_notifier_client vio_ds_notifier = {
-	.add		= vio_add,
+	.add		= vio_add_ds,
 	.remove		= vio_remove,
 	.node_name	= "domain-services-port",
 };
diff --git a/arch/sparc64/lib/NGmemcpy.S b/arch/sparc64/lib/NGmemcpy.S
index 605cb3f0990..96a14caf696 100644
--- a/arch/sparc64/lib/NGmemcpy.S
+++ b/arch/sparc64/lib/NGmemcpy.S
@@ -321,11 +321,11 @@ FUNC_NAME:	/* %i0=dst, %i1=src, %i2=len */
 	andn		%i2, 0xf, %i4
 	and		%i2, 0xf, %i2
 1:	subcc		%i4, 0x10, %i4
-	EX_LD(LOAD(ldx, %i1, %i5))
+	EX_LD(LOAD(ldx, %i1, %o4))
 	add		%i1, 0x08, %i1
 	EX_LD(LOAD(ldx, %i1, %g1))
 	sub		%i1, 0x08, %i1
-	EX_ST(STORE(stx, %i5, %i1 + %i3))
+	EX_ST(STORE(stx, %o4, %i1 + %i3))
 	add		%i1, 0x8, %i1
 	EX_ST(STORE(stx, %g1, %i1 + %i3))
 	bgu,pt		%XCC, 1b
@@ -334,8 +334,8 @@ FUNC_NAME:	/* %i0=dst, %i1=src, %i2=len */
 	be,pt		%XCC, 1f
 	 nop
 	sub		%i2, 0x8, %i2
-	EX_LD(LOAD(ldx, %i1, %i5))
-	EX_ST(STORE(stx, %i5, %i1 + %i3))
+	EX_LD(LOAD(ldx, %i1, %o4))
+	EX_ST(STORE(stx, %o4, %i1 + %i3))
 	add		%i1, 0x8, %i1
 1:	andcc		%i2, 0x4, %g0
 	be,pt		%XCC, 1f