ACPI: Set _PSD ACPI_PDC_SMP_T_SWCOORD

The ACPI_PDC_SMP_T_SWCOORD bit is set by and OS that is capable of
native ACPI throttling software coordination for mutli-processors
using the _TSD information.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

arch/ia64/kernel/acpi-processor.c

@@ -45,6 +45,12 @@ static void init_intel_pdc(struct acpi_processor *pr)
 	buf[0] = ACPI_PDC_REVISION_ID;
 	buf[1] = 1;
 	buf[2] = ACPI_PDC_EST_CAPABILITY_SMP;
+	/*
+	 * The default of PDC_SMP_T_SWCOORD bit is set for IA64 cpu so
+	 * that OSPM is capable of native ACPI throttling software
+	 * coordination using BIOS supplied _TSD info.
+	 */
+	buf[2] |= ACPI_PDC_SMP_T_SWCOORD;
 
 	obj->type = ACPI_TYPE_BUFFER;
 	obj->buffer.length = 12;

arch/x86/kernel/acpi/processor.c

@@ -46,6 +46,12 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
 	buf[1] = 1;
 	buf[2] = ACPI_PDC_C_CAPABILITY_SMP;
 
+	/*
+	 * The default of PDC_SMP_T_SWCOORD bit is set for intel x86 cpu so
+	 * that OSPM is capable of native ACPI throttling software
+	 * coordination using BIOS supplied _TSD info.
+	 */
+	buf[2] |= ACPI_PDC_SMP_T_SWCOORD;
 	if (cpu_has(c, X86_FEATURE_EST))
 		buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;