diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c
index 14d7eeb..1647699 100644
--- a/drivers/infiniband/hw/hfi1/affinity.c
+++ b/drivers/infiniband/hw/hfi1/affinity.c
@@ -53,6 +53,11 @@
 #include "sdma.h"
 #include "trace.h"
 
+struct hfi1_affinity_node_list node_affinity = {
+	.list = LIST_HEAD_INIT(node_affinity.list),
+	.lock = __SPIN_LOCK_UNLOCKED(&node_affinity.lock),
+};
+
 /* Name of IRQ types, indexed by enum irq_type */
 static const char * const irq_type_names[] = {
 	"SDMA",
@@ -69,45 +74,100 @@
 }
 
 /* Initialize non-HT cpu cores mask */
-int init_real_cpu_mask(struct hfi1_devdata *dd)
+void init_real_cpu_mask(void)
 {
-	struct hfi1_affinity *info;
 	int possible, curr_cpu, i, ht;
 
-	info = kzalloc(sizeof(*info), GFP_KERNEL);
-	if (!info)
-		return -ENOMEM;
-
-	cpumask_clear(&info->real_cpu_mask);
+	cpumask_clear(&node_affinity.real_cpu_mask);
 
 	/* Start with cpu online mask as the real cpu mask */
-	cpumask_copy(&info->real_cpu_mask, cpu_online_mask);
+	cpumask_copy(&node_affinity.real_cpu_mask, cpu_online_mask);
 
 	/*
 	 * Remove HT cores from the real cpu mask.  Do this in two steps below.
 	 */
-	possible = cpumask_weight(&info->real_cpu_mask);
+	possible = cpumask_weight(&node_affinity.real_cpu_mask);
 	ht = cpumask_weight(topology_sibling_cpumask(
-					cpumask_first(&info->real_cpu_mask)));
+				cpumask_first(&node_affinity.real_cpu_mask)));
 	/*
 	 * Step 1.  Skip over the first N HT siblings and use them as the
 	 * "real" cores.  Assumes that HT cores are not enumerated in
 	 * succession (except in the single core case).
 	 */
-	curr_cpu = cpumask_first(&info->real_cpu_mask);
+	curr_cpu = cpumask_first(&node_affinity.real_cpu_mask);
 	for (i = 0; i < possible / ht; i++)
-		curr_cpu = cpumask_next(curr_cpu, &info->real_cpu_mask);
+		curr_cpu = cpumask_next(curr_cpu, &node_affinity.real_cpu_mask);
 	/*
 	 * Step 2.  Remove the remaining HT siblings.  Use cpumask_next() to
 	 * skip any gaps.
 	 */
 	for (; i < possible; i++) {
-		cpumask_clear_cpu(curr_cpu, &info->real_cpu_mask);
-		curr_cpu = cpumask_next(curr_cpu, &info->real_cpu_mask);
+		cpumask_clear_cpu(curr_cpu, &node_affinity.real_cpu_mask);
+		curr_cpu = cpumask_next(curr_cpu, &node_affinity.real_cpu_mask);
+	}
+}
+
+void node_affinity_init(void)
+{
+	cpumask_copy(&node_affinity.proc.mask, cpu_online_mask);
+	/*
+	 * The real cpu mask is part of the affinity struct but it has to be
+	 * initialized early. It is needed to calculate the number of user
+	 * contexts in set_up_context_variables().
+	 */
+	init_real_cpu_mask();
+}
+
+void node_affinity_destroy(void)
+{
+	struct list_head *pos, *q;
+	struct hfi1_affinity_node *entry;
+
+	spin_lock(&node_affinity.lock);
+	list_for_each_safe(pos, q, &node_affinity.list) {
+		entry = list_entry(pos, struct hfi1_affinity_node,
+				   list);
+		list_del(pos);
+		kfree(entry);
+	}
+	spin_unlock(&node_affinity.lock);
+}
+
+static struct hfi1_affinity_node *node_affinity_allocate(int node)
+{
+	struct hfi1_affinity_node *entry;
+
+	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+	if (!entry)
+		return NULL;
+	entry->node = node;
+	INIT_LIST_HEAD(&entry->list);
+
+	return entry;
+}
+
+/*
+ * It appends an entry to the list.
+ * It *must* be called with node_affinity.lock held.
+ */
+static void node_affinity_add_tail(struct hfi1_affinity_node *entry)
+{
+	list_add_tail(&entry->list, &node_affinity.list);
+}
+
+/* It must be called with node_affinity.lock held */
+static struct hfi1_affinity_node *node_affinity_lookup(int node)
+{
+	struct list_head *pos;
+	struct hfi1_affinity_node *entry;
+
+	list_for_each(pos, &node_affinity.list) {
+		entry = list_entry(pos, struct hfi1_affinity_node, list);
+		if (entry->node == node)
+			return entry;
 	}
 
-	dd->affinity = info;
-	return 0;
+	return NULL;
 }
 
 /*
@@ -121,10 +181,10 @@
  * to the node relative 1 as necessary.
  *
  */
-void hfi1_dev_affinity_init(struct hfi1_devdata *dd)
+int hfi1_dev_affinity_init(struct hfi1_devdata *dd)
 {
 	int node = pcibus_to_node(dd->pcidev->bus);
-	struct hfi1_affinity *info = dd->affinity;
+	struct hfi1_affinity_node *entry;
 	const struct cpumask *local_mask;
 	int curr_cpu, possible, i;
 
@@ -132,55 +192,75 @@
 		node = numa_node_id();
 	dd->node = node;
 
-	spin_lock_init(&info->lock);
-
-	init_cpu_mask_set(&info->def_intr);
-	init_cpu_mask_set(&info->rcv_intr);
-	init_cpu_mask_set(&info->proc);
-
 	local_mask = cpumask_of_node(dd->node);
 	if (cpumask_first(local_mask) >= nr_cpu_ids)
 		local_mask = topology_core_cpumask(0);
-	/* Use the "real" cpu mask of this node as the default */
-	cpumask_and(&info->def_intr.mask, &info->real_cpu_mask, local_mask);
 
-	/*  fill in the receive list */
-	possible = cpumask_weight(&info->def_intr.mask);
-	curr_cpu = cpumask_first(&info->def_intr.mask);
-	if (possible == 1) {
-		/*  only one CPU, everyone will use it */
-		cpumask_set_cpu(curr_cpu, &info->rcv_intr.mask);
-	} else {
-		/*
-		 * Retain the first CPU in the default list for the control
-		 * context.
-		 */
-		curr_cpu = cpumask_next(curr_cpu, &info->def_intr.mask);
-		/*
-		 * Remove the remaining kernel receive queues from
-		 * the default list and add them to the receive list.
-		 */
-		for (i = 0; i < dd->n_krcv_queues - 1; i++) {
-			cpumask_clear_cpu(curr_cpu, &info->def_intr.mask);
-			cpumask_set_cpu(curr_cpu, &info->rcv_intr.mask);
-			curr_cpu = cpumask_next(curr_cpu, &info->def_intr.mask);
-			if (curr_cpu >= nr_cpu_ids)
-				break;
+	spin_lock(&node_affinity.lock);
+	entry = node_affinity_lookup(dd->node);
+	spin_unlock(&node_affinity.lock);
+
+	/*
+	 * If this is the first time this NUMA node's affinity is used,
+	 * create an entry in the global affinity structure and initialize it.
+	 */
+	if (!entry) {
+		entry = node_affinity_allocate(node);
+		if (!entry) {
+			dd_dev_err(dd,
+				   "Unable to allocate global affinity node\n");
+			return -ENOMEM;
 		}
+		init_cpu_mask_set(&entry->def_intr);
+		init_cpu_mask_set(&entry->rcv_intr);
+		/* Use the "real" cpu mask of this node as the default */
+		cpumask_and(&entry->def_intr.mask, &node_affinity.real_cpu_mask,
+			    local_mask);
+
+		/* fill in the receive list */
+		possible = cpumask_weight(&entry->def_intr.mask);
+		curr_cpu = cpumask_first(&entry->def_intr.mask);
+
+		if (possible == 1) {
+			/* only one CPU, everyone will use it */
+			cpumask_set_cpu(curr_cpu, &entry->rcv_intr.mask);
+		} else {
+			/*
+			 * Retain the first CPU in the default list for the
+			 * control context.
+			 */
+			curr_cpu = cpumask_next(curr_cpu,
+						&entry->def_intr.mask);
+
+			/*
+			 * Remove the remaining kernel receive queues from
+			 * the default list and add them to the receive list.
+			 */
+			for (i = 0; i < dd->n_krcv_queues - 1; i++) {
+				cpumask_clear_cpu(curr_cpu,
+						  &entry->def_intr.mask);
+				cpumask_set_cpu(curr_cpu,
+						&entry->rcv_intr.mask);
+				curr_cpu = cpumask_next(curr_cpu,
+							&entry->def_intr.mask);
+				if (curr_cpu >= nr_cpu_ids)
+					break;
+			}
+		}
+
+		spin_lock(&node_affinity.lock);
+		node_affinity_add_tail(entry);
+		spin_unlock(&node_affinity.lock);
 	}
 
-	cpumask_copy(&info->proc.mask, cpu_online_mask);
-}
-
-void hfi1_dev_affinity_free(struct hfi1_devdata *dd)
-{
-	kfree(dd->affinity);
+	return 0;
 }
 
 int hfi1_get_irq_affinity(struct hfi1_devdata *dd, struct hfi1_msix_entry *msix)
 {
 	int ret;
 	cpumask_var_t diff;
+	struct hfi1_affinity_node *entry;
 	struct cpu_mask_set *set;
 	struct sdma_engine *sde = NULL;
 	struct hfi1_ctxtdata *rcd = NULL;
@@ -194,21 +274,25 @@
 	if (!ret)
 		return -ENOMEM;
 
+	spin_lock(&node_affinity.lock);
+	entry = node_affinity_lookup(dd->node);
+	spin_unlock(&node_affinity.lock);
+
 	switch (msix->type) {
 	case IRQ_SDMA:
 		sde = (struct sdma_engine *)msix->arg;
 		scnprintf(extra, 64, "engine %u", sde->this_idx);
 		/* fall through */
 	case IRQ_GENERAL:
-		set = &dd->affinity->def_intr;
+		set = &entry->def_intr;
 		break;
 	case IRQ_RCVCTXT:
 		rcd = (struct hfi1_ctxtdata *)msix->arg;
 		if (rcd->ctxt == HFI1_CTRL_CTXT) {
-			set = &dd->affinity->def_intr;
+			set = &entry->def_intr;
 			cpu = cpumask_first(&set->mask);
 		} else {
-			set = &dd->affinity->rcv_intr;
+			set = &entry->rcv_intr;
 		}
 		scnprintf(extra, 64, "ctxt %u", rcd->ctxt);
 		break;
@@ -222,8 +306,8 @@
 	 * is set above.  Skip accounting for it.  Everything else finds its
 	 * CPU here.
 	 */
-	if (cpu == -1) {
-		spin_lock(&dd->affinity->lock);
+	if (cpu == -1 && set) {
+		spin_lock(&node_affinity.lock);
 		if (cpumask_equal(&set->mask, &set->used)) {
 			/*
 			 * We've used up all the CPUs, bump up the generation
@@ -235,7 +319,7 @@
 		cpumask_andnot(diff, &set->mask, &set->used);
 		cpu = cpumask_first(diff);
 		cpumask_set_cpu(cpu, &set->used);
-		spin_unlock(&dd->affinity->lock);
+		spin_unlock(&node_affinity.lock);
 	}
 
 	switch (msix->type) {
@@ -263,30 +347,35 @@
 {
 	struct cpu_mask_set *set = NULL;
 	struct hfi1_ctxtdata *rcd;
+	struct hfi1_affinity_node *entry;
+
+	spin_lock(&node_affinity.lock);
+	entry = node_affinity_lookup(dd->node);
+	spin_unlock(&node_affinity.lock);
 
 	switch (msix->type) {
 	case IRQ_SDMA:
 	case IRQ_GENERAL:
-		set = &dd->affinity->def_intr;
+		set = &entry->def_intr;
 		break;
 	case IRQ_RCVCTXT:
 		rcd = (struct hfi1_ctxtdata *)msix->arg;
 		/* only do accounting for non control contexts */
 		if (rcd->ctxt != HFI1_CTRL_CTXT)
-			set = &dd->affinity->rcv_intr;
+			set = &entry->rcv_intr;
 		break;
 	default:
 		return;
 	}
 
 	if (set) {
-		spin_lock(&dd->affinity->lock);
+		spin_lock(&node_affinity.lock);
 		cpumask_andnot(&set->used, &set->used, &msix->mask);
 		if (cpumask_empty(&set->used) && set->gen) {
 			set->gen--;
 			cpumask_copy(&set->used, &set->mask);
 		}
-		spin_unlock(&dd->affinity->lock);
+		spin_unlock(&node_affinity.lock);
 	}
 
 	irq_set_affinity_hint(msix->msix.vector, NULL);
@@ -297,9 +386,10 @@
 {
 	int cpu = -1, ret;
 	cpumask_var_t diff, mask, intrs;
+	struct hfi1_affinity_node *entry;
 	const struct cpumask *node_mask,
 		*proc_mask = tsk_cpus_allowed(current);
-	struct cpu_mask_set *set = &dd->affinity->proc;
+	struct cpu_mask_set *set = &node_affinity.proc;
 
 	/*
 	 * check whether process/context affinity has already
@@ -338,7 +428,7 @@
 	if (!ret)
 		goto free_mask;
 
-	spin_lock(&dd->affinity->lock);
+	spin_lock(&node_affinity.lock);
 	/*
 	 * If we've used all available CPUs, clear the mask and start
 	 * overloading.
@@ -348,13 +438,14 @@
 		cpumask_clear(&set->used);
 	}
 
+	entry = node_affinity_lookup(dd->node);
 	/* CPUs used by interrupt handlers */
-	cpumask_copy(intrs, (dd->affinity->def_intr.gen ?
-			     &dd->affinity->def_intr.mask :
-			     &dd->affinity->def_intr.used));
-	cpumask_or(intrs, intrs, (dd->affinity->rcv_intr.gen ?
-				  &dd->affinity->rcv_intr.mask :
-				  &dd->affinity->rcv_intr.used));
+	cpumask_copy(intrs, (entry->def_intr.gen ?
+			     &entry->def_intr.mask :
+			     &entry->def_intr.used));
+	cpumask_or(intrs, intrs, (entry->rcv_intr.gen ?
+				  &entry->rcv_intr.mask :
+				  &entry->rcv_intr.used));
 	hfi1_cdbg(PROC, "CPUs used by interrupts: %*pbl",
 		  cpumask_pr_args(intrs));
 
@@ -400,7 +491,7 @@
 		cpu = -1;
 	else
 		cpumask_set_cpu(cpu, &set->used);
-	spin_unlock(&dd->affinity->lock);
+	spin_unlock(&node_affinity.lock);
 
 	free_cpumask_var(intrs);
 free_mask:
@@ -413,16 +504,16 @@
 
 void hfi1_put_proc_affinity(struct hfi1_devdata *dd, int cpu)
 {
-	struct cpu_mask_set *set = &dd->affinity->proc;
+	struct cpu_mask_set *set = &node_affinity.proc;
 
 	if (cpu < 0)
 		return;
-	spin_lock(&dd->affinity->lock);
+	spin_lock(&node_affinity.lock);
 	cpumask_clear_cpu(cpu, &set->used);
 	if (cpumask_empty(&set->used) && set->gen) {
 		set->gen--;
 		cpumask_copy(&set->used, &set->mask);
 	}
-	spin_unlock(&dd->affinity->lock);
+	spin_unlock(&node_affinity.lock);
 }