diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c
index e894591..bcaaac9 100644
--- a/arch/arm64/kernel/hw_breakpoint.c
+++ b/arch/arm64/kernel/hw_breakpoint.c
@@ -20,6 +20,7 @@
 
 #define pr_fmt(fmt) "hw-breakpoint: " fmt
 
+#include <linux/cpu_pm.h>
 #include <linux/errno.h>
 #include <linux/hw_breakpoint.h>
 #include <linux/perf_event.h>
@@ -171,7 +172,8 @@ static enum debug_el debug_exception_level(int privilege)
 
 enum hw_breakpoint_ops {
 	HW_BREAKPOINT_INSTALL,
-	HW_BREAKPOINT_UNINSTALL
+	HW_BREAKPOINT_UNINSTALL,
+	HW_BREAKPOINT_RESTORE
 };
 
 /**
@@ -210,6 +212,10 @@ static int hw_breakpoint_slot_setup(struct perf_event **slots, int max_slots,
 				return i;
 			}
 			break;
+		case HW_BREAKPOINT_RESTORE:
+			if (*slot == bp)
+				return i;
+			break;
 		default:
 			pr_warn_once("Unhandled hw breakpoint ops %d\n", ops);
 			return -EINVAL;
@@ -256,7 +262,8 @@ static int hw_breakpoint_control(struct perf_event *bp,
 		 * level.
 		 */
 		enable_debug_monitors(dbg_el);
-
+		/* Fall through */
+	case HW_BREAKPOINT_RESTORE:
 		/* Setup the address register. */
 		write_wb_reg(val_reg, i, info->address);
 
@@ -840,18 +847,36 @@ void hw_breakpoint_thread_switch(struct task_struct *next)
 /*
  * CPU initialisation.
  */
-static void reset_ctrl_regs(void *unused)
+static void hw_breakpoint_reset(void *unused)
 {
 	int i;
-
-	for (i = 0; i < core_num_brps; ++i) {
-		write_wb_reg(AARCH64_DBG_REG_BCR, i, 0UL);
-		write_wb_reg(AARCH64_DBG_REG_BVR, i, 0UL);
+	struct perf_event **slots;
+	/*
+	 * When a CPU goes through cold-boot, it does not have any installed
+	 * slot, so it is safe to share the same function for restoring and
+	 * resetting breakpoints; when a CPU is hotplugged in, it goes
+	 * through the slots, which are all empty, hence it just resets control
+	 * and value for debug registers.
+	 * When this function is triggered on warm-boot through a CPU PM
+	 * notifier some slots might be initialized; if so they are
+	 * reprogrammed according to the debug slots content.
+	 */
+	for (slots = this_cpu_ptr(bp_on_reg), i = 0; i < core_num_brps; ++i) {
+		if (slots[i]) {
+			hw_breakpoint_control(slots[i], HW_BREAKPOINT_RESTORE);
+		} else {
+			write_wb_reg(AARCH64_DBG_REG_BCR, i, 0UL);
+			write_wb_reg(AARCH64_DBG_REG_BVR, i, 0UL);
+		}
 	}
 
-	for (i = 0; i < core_num_wrps; ++i) {
-		write_wb_reg(AARCH64_DBG_REG_WCR, i, 0UL);
-		write_wb_reg(AARCH64_DBG_REG_WVR, i, 0UL);
+	for (slots = this_cpu_ptr(wp_on_reg), i = 0; i < core_num_wrps; ++i) {
+		if (slots[i]) {
+			hw_breakpoint_control(slots[i], HW_BREAKPOINT_RESTORE);
+		} else {
+			write_wb_reg(AARCH64_DBG_REG_WCR, i, 0UL);
+			write_wb_reg(AARCH64_DBG_REG_WVR, i, 0UL);
+		}
 	}
 }
 
@@ -861,7 +886,7 @@ static int hw_breakpoint_reset_notify(struct notifier_block *self,
 {
 	int cpu = (long)hcpu;
 	if (action == CPU_ONLINE)
-		smp_call_function_single(cpu, reset_ctrl_regs, NULL, 1);
+		smp_call_function_single(cpu, hw_breakpoint_reset, NULL, 1);
 	return NOTIFY_OK;
 }
 
@@ -869,6 +894,33 @@ static struct notifier_block hw_breakpoint_reset_nb = {
 	.notifier_call = hw_breakpoint_reset_notify,
 };
 
+#ifdef CONFIG_CPU_PM
+static int hw_breakpoint_cpu_pm_notify(struct notifier_block *self,
+				       unsigned long action,
+				       void *v)
+{
+	if (action == CPU_PM_EXIT) {
+		hw_breakpoint_reset(NULL);
+		return NOTIFY_OK;
+	}
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block hw_breakpoint_cpu_pm_nb = {
+	.notifier_call = hw_breakpoint_cpu_pm_notify,
+};
+
+static void __init hw_breakpoint_pm_init(void)
+{
+	cpu_pm_register_notifier(&hw_breakpoint_cpu_pm_nb);
+}
+#else
+static inline void hw_breakpoint_pm_init(void)
+{
+}
+#endif
+
 /*
  * One-time initialisation.
  */
@@ -884,8 +936,8 @@ static int __init arch_hw_breakpoint_init(void)
 	 * Reset the breakpoint resources. We assume that a halting
 	 * debugger will leave the world in a nice state for us.
 	 */
-	smp_call_function(reset_ctrl_regs, NULL, 1);
-	reset_ctrl_regs(NULL);
+	smp_call_function(hw_breakpoint_reset, NULL, 1);
+	hw_breakpoint_reset(NULL);
 
 	/* Register debug fault handlers. */
 	hook_debug_fault_code(DBG_ESR_EVT_HWBP, breakpoint_handler, SIGTRAP,
@@ -895,6 +947,7 @@ static int __init arch_hw_breakpoint_init(void)
 
 	/* Register hotplug notifier. */
 	register_cpu_notifier(&hw_breakpoint_reset_nb);
+	hw_breakpoint_pm_init();
 
 	return 0;
 }
