| Message ID | 1406604470-4800-1-git-send-email-hanjun.guo@linaro.org (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
On Tuesday, July 29, 2014 11:27:50 AM Hanjun Guo wrote: > Logical processors with APIC ID values of 255 and greater are > required to have a Processor Device object and must convey the > processor's APIC information to OSPM using the Processor Local > X2APIC structure, but not until ACPI 5.1, X2APIC structure was > not supported in _MAT method. > > _MAT is needed for CPU hotplug and system with more than 255 > CPUs will definitely need X2APIC structure, so add its support > in map_mat_entry() to make it possible to get local x2apic id > via _MAT based on ACPI 5.1. > > Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Applied, thanks! > --- > drivers/acpi/processor_core.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c > index 00f48d1..e32321c 100644 > --- a/drivers/acpi/processor_core.c > +++ b/drivers/acpi/processor_core.c > @@ -129,6 +129,8 @@ static int map_mat_entry(acpi_handle handle, int type, u32 acpi_id) > map_lapic_id(header, acpi_id, &apic_id); > } else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) { > map_lsapic_id(header, type, acpi_id, &apic_id); > + } else if (header->type == ACPI_MADT_TYPE_LOCAL_X2APIC) { > + map_x2apic_id(header, type, acpi_id, &apic_id); > } > > exit: >
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 00f48d1..e32321c 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -129,6 +129,8 @@ static int map_mat_entry(acpi_handle handle, int type, u32 acpi_id) map_lapic_id(header, acpi_id, &apic_id); } else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) { map_lsapic_id(header, type, acpi_id, &apic_id); + } else if (header->type == ACPI_MADT_TYPE_LOCAL_X2APIC) { + map_x2apic_id(header, type, acpi_id, &apic_id); } exit:
Logical processors with APIC ID values of 255 and greater are required to have a Processor Device object and must convey the processor's APIC information to OSPM using the Processor Local X2APIC structure, but not until ACPI 5.1, X2APIC structure was not supported in _MAT method. _MAT is needed for CPU hotplug and system with more than 255 CPUs will definitely need X2APIC structure, so add its support in map_mat_entry() to make it possible to get local x2apic id via _MAT based on ACPI 5.1. Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> --- drivers/acpi/processor_core.c | 2 ++ 1 file changed, 2 insertions(+)