diff --git a/arch/arm64/include/asm/mpam.h b/arch/arm64/include/asm/mpam.h
index 6bccbfdccb87..05aa71200f61 100644
--- a/arch/arm64/include/asm/mpam.h
+++ b/arch/arm64/include/asm/mpam.h
@@ -4,6 +4,7 @@
 #ifndef __ASM__MPAM_H
 #define __ASM__MPAM_H
 
+#include <linux/bitfield.h>
 #include <linux/jump_label.h>
 #include <linux/percpu.h>
 #include <linux/sched.h>
@@ -22,6 +23,23 @@ DECLARE_PER_CPU(u64, arm64_mpam_current);
  */
 extern u64 arm64_mpam_global_default;
 
+#ifdef CONFIG_ARM64_MPAM
+static inline u64 __mpam_regval(u16 partid_d, u16 partid_i, u8 pmg_d, u8 pmg_i)
+{
+	return FIELD_PREP(MPAM0_EL1_PARTID_D, partid_d) |
+	       FIELD_PREP(MPAM0_EL1_PARTID_I, partid_i) |
+	       FIELD_PREP(MPAM0_EL1_PMG_D, pmg_d) |
+	       FIELD_PREP(MPAM0_EL1_PMG_I, pmg_i);
+}
+
+static inline void mpam_set_cpu_defaults(int cpu, u16 partid_d, u16 partid_i,
+					 u8 pmg_d, u8 pmg_i)
+{
+	u64 default_val = __mpam_regval(partid_d, partid_i, pmg_d, pmg_i);
+
+	WRITE_ONCE(per_cpu(arm64_mpam_default, cpu), default_val);
+}
+
 /*
  * The resctrl filesystem writes to the partid/pmg values for threads and CPUs,
  * which may race with reads in mpam_thread_switch(). Ensure only one of the old
@@ -30,12 +48,20 @@ extern u64 arm64_mpam_global_default;
  * value to be stored with cache allocations, despite being considered 'free' by
  * resctrl.
  */
-#ifdef CONFIG_ARM64_MPAM
 static inline u64 mpam_get_regval(struct task_struct *tsk)
 {
 	return READ_ONCE(task_thread_info(tsk)->mpam_partid_pmg);
 }
 
+static inline void mpam_set_task_partid_pmg(struct task_struct *tsk,
+					    u16 partid_d, u16 partid_i,
+					    u8 pmg_d, u8 pmg_i)
+{
+	u64 regval = __mpam_regval(partid_d, partid_i, pmg_d, pmg_i);
+
+	WRITE_ONCE(task_thread_info(tsk)->mpam_partid_pmg, regval);
+}
+
 static inline void mpam_thread_switch(struct task_struct *tsk)
 {
 	u64 oldregval;