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....@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:
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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