Subject: ACPI: Set the bif of ACPI_PDC_SMP_T_SWCOORD for _PDC
>From : Zhao Yakui <[EMAIL PROTECTED]>
The bit of ACPI_PDC_SMP_T_SWCOORD is set so that OSPM is capable of
native ACPI throttling software coordination for mutli-processors
using the _TSD information.
Signed-off-by: Zhao Yakui <[EMAIL PROTECTED]>
---
arch/ia64/kernel/acpi-processor.c | 6 ++++++
arch/x86/kernel/acpi/processor.c | 6 ++++++
2 files changed, 12 insertions(+)
Index: linux-2.6/arch/ia64/kernel/acpi-processor.c
===================================================================
--- linux-2.6.orig/arch/ia64/kernel/acpi-processor.c
+++ linux-2.6/arch/ia64/kernel/acpi-processor.c
@@ -45,6 +45,12 @@ static void init_intel_pdc(struct acpi_p
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;
Index: linux-2.6/arch/x86/kernel/acpi/processor.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/acpi/processor.c
+++ linux-2.6/arch/x86/kernel/acpi/processor.c
@@ -46,6 +46,12 @@ static void init_intel_pdc(struct acpi_p
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;
-
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
