diff --git a/arch/arm64/include/asm/mpam_resource.h b/arch/arm64/include/asm/mpam_resource.h
index ab90596c9194332512e522ce975a1e33f435fbed..1a6904c22b9c8b9e56f2a5bea4aeeb3f42276403 100644
--- a/arch/arm64/include/asm/mpam_resource.h
+++ b/arch/arm64/include/asm/mpam_resource.h
@@ -89,6 +89,10 @@
 /* [FIXME] hard code for hardlim */
 #define MBW_MAX_SET(v)		(MBW_MAX_HARDLIM|((v) << (16 - BWA_WD)))
 #define MBW_MAX_GET(v)		(((v) & MBW_MAX_MASK) >> (16 - BWA_WD))
+
+/* hard code for mbw_max max-percentage's cresponding masks */
+#define MBA_MAX_WD 63u
+
 /*
  * emulate the mpam nodes
  * These should be reported by ACPI MPAM Table.
diff --git a/arch/arm64/include/asm/resctrl.h b/arch/arm64/include/asm/resctrl.h
index 0a0a12b17ab3856c0dcd41e97ce2b81da96d28a9..fb5fa6c138436e6a877ab769a161dee5b484cb8f 100644
--- a/arch/arm64/include/asm/resctrl.h
+++ b/arch/arm64/include/asm/resctrl.h
@@ -65,4 +65,6 @@ int
 mongroup_create_dir(struct kernfs_node *parent_kn, struct resctrl_group *prgrp,
 		    char *name, struct kernfs_node **dest_kn);
 
+int rdtgroup_init_alloc(struct rdtgroup *rdtgrp);
+
 #endif /* _ASM_ARM64_RESCTRL_H */
diff --git a/arch/arm64/kernel/mpam.c b/arch/arm64/kernel/mpam.c
index 4007a31b5249438be9d79d47a2812bb93298b449..dc6dd566fc37dafb9cc4aa208b473ba9a56b9e75 100644
--- a/arch/arm64/kernel/mpam.c
+++ b/arch/arm64/kernel/mpam.c
@@ -91,6 +91,9 @@ static inline void mpam_node_assign_val(struct mpam_node *n,
 	n->addr = hwpage_address;
 	n->component_id = component_id;
 	n->cpus_list = "0";
+
+	if (n->type == MPAM_RESOURCE_MC)
+		n->default_ctrl = MBA_MAX_WD;
 }
 
 #define MPAM_NODE_NAME_SIZE (10)
@@ -549,6 +552,20 @@ void post_resctrl_mount(void)
 
 static int reset_all_ctrls(struct resctrl_resource *r)
 {
+	struct raw_resctrl_resource *rr;
+	struct rdt_domain *d;
+	int partid;
+
+	rr = (struct raw_resctrl_resource *)r->res;
+	for (partid = 0; partid < rr->num_partid; partid++) {
+		list_for_each_entry(d, &r->domains, list) {
+			d->new_ctrl = rr->default_ctrl;
+			d->ctrl_val[partid] = rr->default_ctrl;
+			d->have_new_ctrl = true;
+			rr->msr_update(d, partid);
+		}
+	}
+
 	return 0;
 }
 
diff --git a/arch/arm64/kernel/mpam_ctrlmon.c b/arch/arm64/kernel/mpam_ctrlmon.c
index c9d306a93b246ae42ac36dc9a17770e1c6cf5fb2..90f34987e5b84db79a5a93256178b32bbdaf1e07 100644
--- a/arch/arm64/kernel/mpam_ctrlmon.c
+++ b/arch/arm64/kernel/mpam_ctrlmon.c
@@ -589,3 +589,31 @@ int resctrl_mkdir_ctrlmon_mondata(struct kernfs_node *parent_kn,
 	}
 	return ret;
 }
+
+/* Initialize the RDT group's allocations. */
+int rdtgroup_init_alloc(struct rdtgroup *rdtgrp)
+{
+	struct resctrl_resource *r;
+	struct raw_resctrl_resource *rr;
+	struct rdt_domain *d;
+	int ret;
+
+	for_each_resctrl_resource(r) {
+		if (!r->alloc_enabled)
+			continue;
+
+		rr = (struct raw_resctrl_resource *)r->res;
+		list_for_each_entry(d, &r->domains, list) {
+			d->new_ctrl = rr->default_ctrl;
+			d->have_new_ctrl = true;
+		}
+
+		ret = update_domains(r, rdtgrp);
+		if (ret < 0) {
+			rdt_last_cmd_puts("Failed to initialize allocations\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
diff --git a/fs/resctrlfs.c b/fs/resctrlfs.c
index 4d3fa5da03796608dcde5135f5639e8e26c3b94a..9c48cd165ea45b97a6b19188687c70f983c5b686 100644
--- a/fs/resctrlfs.c
+++ b/fs/resctrlfs.c
@@ -673,6 +673,11 @@ static int resctrl_group_mkdir_ctrl_mon(struct kernfs_node *parent_kn,
 	ret = 0;
 
 	rdtgrp->closid = closid;
+
+	ret = rdtgroup_init_alloc(rdtgrp);
+	if (ret < 0)
+		goto out_id_free;
+
 	list_add(&rdtgrp->resctrl_group_list, &resctrl_all_groups);
 
 	if (resctrl_mon_capable) {