diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index a7ca07f3754e50483f73dda4d545383c293e4c82..f1c9f70b4e45b969183543fc0a6430a90d133786 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -44,6 +44,7 @@
 #include <linux/efi.h>
 #include <linux/mmzone.h>
 #include <linux/nodemask.h>
+#include <acpi/processor.h>
 #include <asm/io.h>
 #include <asm/iosapic.h>
 #include <asm/machvec.h>
@@ -907,6 +908,8 @@ int acpi_map_lsapic(acpi_handle handle, int *pcpu)
 	cpu_set(cpu, cpu_present_map);
 	ia64_cpu_to_sapicid[cpu] = physid;
 
+	acpi_processor_set_pdc(handle);
+
 	*pcpu = cpu;
 	return (0);
 }
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index a54d714545ff826fba14badabf1af6401809b712..d635a93ae59c9d952e0e11c1a232c11c0abbd17e 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -490,6 +490,7 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
  *  ACPI based hotplug support for CPU
  */
 #ifdef CONFIG_ACPI_HOTPLUG_CPU
+#include <acpi/processor.h>
 
 static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
 {
@@ -567,6 +568,8 @@ static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
 		goto free_new_map;
 	}
 
+	acpi_processor_set_pdc(handle);
+
 	cpu = cpumask_first(new_map);
 	acpi_map_cpu2node(handle, cpu, physid);
 
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index ef34faad6003b30be16b68be97a0ad8cf1bacc5e..626c75479868eb395e02b32bce7262f2fb60b313 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -317,8 +317,6 @@ acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in)
 	return status;
 }
 
-static int early_pdc_done;
-
 void acpi_processor_set_pdc(acpi_handle handle)
 {
 	struct acpi_object_list *obj_list;
@@ -326,9 +324,6 @@ void acpi_processor_set_pdc(acpi_handle handle)
 	if (arch_has_acpi_pdc() == false)
 		return;
 
-	if (early_pdc_done)
-		return;
-
 	obj_list = acpi_processor_alloc_pdc();
 	if (!obj_list)
 		return;
@@ -369,6 +364,4 @@ void __init acpi_early_processor_set_pdc(void)
 	acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
 			    ACPI_UINT32_MAX,
 			    early_init_pdc, NULL, NULL, NULL);
-
-	early_pdc_done = 1;
 }
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 7eedf7475f4ef6557096d9ca85f8fe81074d0262..b5658cdce27fec45f4d718e924af3229308249e0 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -608,9 +608,6 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
 		goto err_remove_fs;
 	}
 
-	/* _PDC call should be done before doing anything else (if reqd.). */
-	acpi_processor_set_pdc(pr->handle);
-
 #ifdef CONFIG_CPU_FREQ
 	acpi_processor_ppc_has_changed(pr, 0);
 #endif