diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h
index a365f67131ec..ed693bfe474d 100644
--- a/include/linux/resctrl.h
+++ b/include/linux/resctrl.h
@@ -150,13 +150,18 @@ struct resctrl_membw {
 struct rdt_parse_data;
 struct resctrl_schema;
 
+enum resctrl_scope {
+	RESCTRL_L2_CACHE = 2,
+	RESCTRL_L3_CACHE = 3,
+};
+
 /**
  * struct rdt_resource - attributes of a resctrl resource
  * @rid:		The index of the resource
  * @alloc_capable:	Is allocation available on this machine
  * @mon_capable:	Is monitor feature available on this machine
  * @num_rmid:		Number of RMIDs available
- * @cache_level:	Which cache level defines scope of this resource
+ * @scope:		Scope of this resource
  * @cache:		Cache allocation related data
  * @membw:		If the component has bandwidth controls, their properties.
  * @domains:		RCU list of all domains for this resource
@@ -174,7 +179,7 @@ struct rdt_resource {
 	bool			alloc_capable;
 	bool			mon_capable;
 	int			num_rmid;
-	int			cache_level;
+	enum resctrl_scope	scope;
 	struct resctrl_cache	cache;
 	struct resctrl_membw	membw;
 	struct list_head	domains;
diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c
index 7751eea19fd2..13b5461c3cb0 100644
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -68,7 +68,7 @@ struct rdt_hw_resource rdt_resources_all[] = {
 		.r_resctrl = {
 			.rid			= RDT_RESOURCE_L3,
 			.name			= "L3",
-			.cache_level		= 3,
+			.scope			= RESCTRL_L3_CACHE,
 			.domains		= domain_init(RDT_RESOURCE_L3),
 			.parse_ctrlval		= parse_cbm,
 			.format_str		= "%d=%0*x",
@@ -82,7 +82,7 @@ struct rdt_hw_resource rdt_resources_all[] = {
 		.r_resctrl = {
 			.rid			= RDT_RESOURCE_L2,
 			.name			= "L2",
-			.cache_level		= 2,
+			.scope			= RESCTRL_L2_CACHE,
 			.domains		= domain_init(RDT_RESOURCE_L2),
 			.parse_ctrlval		= parse_cbm,
 			.format_str		= "%d=%0*x",
@@ -96,7 +96,7 @@ struct rdt_hw_resource rdt_resources_all[] = {
 		.r_resctrl = {
 			.rid			= RDT_RESOURCE_MBA,
 			.name			= "MB",
-			.cache_level		= 3,
+			.scope			= RESCTRL_L3_CACHE,
 			.domains		= domain_init(RDT_RESOURCE_MBA),
 			.parse_ctrlval		= parse_bw,
 			.format_str		= "%d=%*u",
@@ -108,7 +108,7 @@ struct rdt_hw_resource rdt_resources_all[] = {
 		.r_resctrl = {
 			.rid			= RDT_RESOURCE_SMBA,
 			.name			= "SMBA",
-			.cache_level		= 3,
+			.scope			= RESCTRL_L3_CACHE,
 			.domains		= domain_init(RDT_RESOURCE_SMBA),
 			.parse_ctrlval		= parse_bw,
 			.format_str		= "%d=%*u",
@@ -392,9 +392,6 @@ struct rdt_domain *rdt_find_domain(struct rdt_resource *r, int id,
 	struct rdt_domain *d;
 	struct list_head *l;
 
-	if (id < 0)
-		return ERR_PTR(-ENODEV);
-
 	list_for_each(l, &r->domains) {
 		d = list_entry(l, struct rdt_domain, list);
 		/* When id is found, return its domain. */
@@ -484,6 +481,19 @@ static int arch_domain_mbm_alloc(u32 num_rmid, struct rdt_hw_domain *hw_dom)
 	return 0;
 }
 
+static int get_domain_id_from_scope(int cpu, enum resctrl_scope scope)
+{
+	switch (scope) {
+	case RESCTRL_L2_CACHE:
+	case RESCTRL_L3_CACHE:
+		return get_cpu_cacheinfo_id(cpu, scope);
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
 /*
  * domain_add_cpu - Add a cpu to a resource's domain list.
  *
@@ -499,7 +509,7 @@ static int arch_domain_mbm_alloc(u32 num_rmid, struct rdt_hw_domain *hw_dom)
  */
 static void domain_add_cpu(int cpu, struct rdt_resource *r)
 {
-	int id = get_cpu_cacheinfo_id(cpu, r->cache_level);
+	int id = get_domain_id_from_scope(cpu, r->scope);
 	struct list_head *add_pos = NULL;
 	struct rdt_hw_domain *hw_dom;
 	struct rdt_domain *d;
@@ -507,6 +517,12 @@ static void domain_add_cpu(int cpu, struct rdt_resource *r)
 
 	lockdep_assert_held(&domain_list_lock);
 
+	if (id < 0) {
+		pr_warn_once("Can't find domain id for CPU:%d scope:%d for resource %s\n",
+			     cpu, r->scope, r->name);
+		return;
+	}
+
 	d = rdt_find_domain(r, id, &add_pos);
 	if (IS_ERR(d)) {
 		pr_warn("Couldn't find cache id for CPU %d\n", cpu);
@@ -552,15 +568,21 @@ static void domain_add_cpu(int cpu, struct rdt_resource *r)
 
 static void domain_remove_cpu(int cpu, struct rdt_resource *r)
 {
-	int id = get_cpu_cacheinfo_id(cpu, r->cache_level);
+	int id = get_domain_id_from_scope(cpu, r->scope);
 	struct rdt_hw_domain *hw_dom;
 	struct rdt_domain *d;
 
 	lockdep_assert_held(&domain_list_lock);
 
+	if (id < 0) {
+		pr_warn_once("Can't find domain id for CPU:%d scope:%d for resource %s\n",
+			     cpu, r->scope, r->name);
+		return;
+	}
+
 	d = rdt_find_domain(r, id, NULL);
-	if (IS_ERR_OR_NULL(d)) {
-		pr_warn("Couldn't find cache id for CPU %d\n", cpu);
+	if (!d) {
+		pr_warn("Couldn't find domain with id=%d for CPU %d\n", id, cpu);
 		return;
 	}
 	hw_dom = resctrl_to_arch_dom(d);
diff --git a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c
index 7471f6b747b6..4b60835f6170 100644
--- a/arch/x86/kernel/cpu/resctrl/ctrlmondata.c
+++ b/arch/x86/kernel/cpu/resctrl/ctrlmondata.c
@@ -579,7 +579,7 @@ int rdtgroup_mondata_show(struct seq_file *m, void *arg)
 
 	r = &rdt_resources_all[resid].r_resctrl;
 	d = rdt_find_domain(r, domid, NULL);
-	if (IS_ERR_OR_NULL(d)) {
+	if (!d) {
 		ret = -ENOENT;
 		goto out;
 	}
diff --git a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
index 884b88e25141..0013b1b39c17 100644
--- a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
+++ b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
@@ -292,10 +292,14 @@ static void pseudo_lock_region_clear(struct pseudo_lock_region *plr)
  */
 static int pseudo_lock_region_init(struct pseudo_lock_region *plr)
 {
+	enum resctrl_scope scope = plr->s->res->scope;
 	struct cpu_cacheinfo *ci;
 	int ret;
 	int i;
 
+	if (WARN_ON_ONCE(scope != RESCTRL_L2_CACHE && scope != RESCTRL_L3_CACHE))
+		return -ENODEV;
+
 	/* Pick the first cpu we find that is associated with the cache. */
 	plr->cpu = cpumask_first(&plr->d->cpu_mask);
 
@@ -311,7 +315,7 @@ static int pseudo_lock_region_init(struct pseudo_lock_region *plr)
 	plr->size = rdtgroup_cbm_to_size(plr->s->res, plr->d, plr->cbm);
 
 	for (i = 0; i < ci->num_leaves; i++) {
-		if (ci->info_list[i].level == plr->s->res->cache_level) {
+		if (ci->info_list[i].level == scope) {
 			plr->line_size = ci->info_list[i].coherency_line_size;
 			return 0;
 		}
diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index da4f13db4161..5cdaf08a97ad 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -1454,10 +1454,13 @@ unsigned int rdtgroup_cbm_to_size(struct rdt_resource *r,
 	unsigned int size = 0;
 	int num_b, i;
 
+	if (WARN_ON_ONCE(r->scope != RESCTRL_L2_CACHE && r->scope != RESCTRL_L3_CACHE))
+		return size;
+
 	num_b = bitmap_weight(&cbm, r->cache.cbm_len);
 	ci = get_cpu_cacheinfo(cpumask_any(&d->cpu_mask));
 	for (i = 0; i < ci->num_leaves; i++) {
-		if (ci->info_list[i].level == r->cache_level) {
+		if (ci->info_list[i].level == r->scope) {
 			size = ci->info_list[i].size / r->cache.cbm_len * num_b;
 			break;
 		}
