diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index 52b25f2356f2..3a98702b7445 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -84,7 +84,6 @@ static inline struct acpi_processor_performance *to_perf_data(struct acpi_cpufre
 static struct cpufreq_driver acpi_cpufreq_driver;
 
 static unsigned int acpi_pstate_strict;
-static struct msr __percpu *msrs;
 
 static bool boost_state(unsigned int cpu)
 {
@@ -104,11 +103,10 @@ static bool boost_state(unsigned int cpu)
 	return false;
 }
 
-static void boost_set_msrs(bool enable, const struct cpumask *cpumask)
+static int boost_set_msr(bool enable)
 {
-	u32 cpu;
 	u32 msr_addr;
-	u64 msr_mask;
+	u64 msr_mask, val;
 
 	switch (boot_cpu_data.x86_vendor) {
 	case X86_VENDOR_INTEL:
@@ -120,26 +118,31 @@ static void boost_set_msrs(bool enable, const struct cpumask *cpumask)
 		msr_mask = MSR_K7_HWCR_CPB_DIS;
 		break;
 	default:
-		return;
+		return -EINVAL;
 	}
 
-	rdmsr_on_cpus(cpumask, msr_addr, msrs);
+	rdmsrl(msr_addr, val);
 
-	for_each_cpu(cpu, cpumask) {
-		struct msr *reg = per_cpu_ptr(msrs, cpu);
-		if (enable)
-			reg->q &= ~msr_mask;
-		else
-			reg->q |= msr_mask;
-	}
+	if (enable)
+		val &= ~msr_mask;
+	else
+		val |= msr_mask;
 
-	wrmsr_on_cpus(cpumask, msr_addr, msrs);
+	wrmsrl(msr_addr, val);
+	return 0;
+}
+
+static void boost_set_msr_each(void *p_en)
+{
+	bool enable = (bool) p_en;
+
+	boost_set_msr(enable);
 }
 
 static int set_boost(int val)
 {
 	get_online_cpus();
-	boost_set_msrs(val, cpu_online_mask);
+	on_each_cpu(boost_set_msr_each, (void *)(long)val, 1);
 	put_online_cpus();
 	pr_debug("Core Boosting %sabled.\n", val ? "en" : "dis");
 
@@ -538,29 +541,20 @@ static void free_acpi_perf_data(void)
 
 static int cpufreq_boost_online(unsigned int cpu)
 {
-	const struct cpumask *cpumask;
-
-	cpumask = get_cpu_mask(cpu);
 	/*
 	 * On the CPU_UP path we simply keep the boost-disable flag
 	 * in sync with the current global state.
 	 */
-	boost_set_msrs(acpi_cpufreq_driver.boost_enabled, cpumask);
-	return 0;
+	return boost_set_msr(acpi_cpufreq_driver.boost_enabled);
 }
 
 static int cpufreq_boost_down_prep(unsigned int cpu)
 {
-	const struct cpumask *cpumask;
-
-	cpumask = get_cpu_mask(cpu);
-
 	/*
 	 * Clear the boost-disable bit on the CPU_DOWN path so that
 	 * this cpu cannot block the remaining ones from boosting.
 	 */
-	boost_set_msrs(1, cpumask);
-	return 0;
+	return boost_set_msr(1);
 }
 
 /*
@@ -918,11 +912,6 @@ static void __init acpi_cpufreq_boost_init(void)
 	if (!(boot_cpu_has(X86_FEATURE_CPB) || boot_cpu_has(X86_FEATURE_IDA)))
 		return;
 
-	msrs = msrs_alloc();
-
-	if (!msrs)
-		return;
-
 	acpi_cpufreq_driver.set_boost = set_boost;
 	acpi_cpufreq_driver.boost_enabled = boost_state(0);
 
@@ -934,8 +923,6 @@ static void __init acpi_cpufreq_boost_init(void)
 				cpufreq_boost_online, cpufreq_boost_down_prep);
 	if (ret < 0) {
 		pr_err("acpi_cpufreq: failed to register hotplug callbacks\n");
-		msrs_free(msrs);
-		msrs = NULL;
 		return;
 	}
 	acpi_cpufreq_online = ret;
@@ -943,14 +930,8 @@ static void __init acpi_cpufreq_boost_init(void)
 
 static void acpi_cpufreq_boost_exit(void)
 {
-	if (!msrs)
-		return;
-
 	if (acpi_cpufreq_online >= 0)
 		cpuhp_remove_state_nocalls(acpi_cpufreq_online);
-
-	msrs_free(msrs);
-	msrs = NULL;
 }
 
 static int __init acpi_cpufreq_init(void)