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| author | Hanjun Guo <hanjun.guo@linaro.org> | 2014-07-29 05:27:50 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-07-30 02:03:31 +0200 |
| commit | 515afdcba0880528fa8ae6fa63a14de6b9018770 (patch) | |
| tree | f31bf10eb0f12da1979a3384eb7c2d29c093207b /drivers/acpi | |
| parent | Linux 3.16-rc7 (diff) | |
| download | linux-515afdcba0880528fa8ae6fa63a14de6b9018770.tar.xz linux-515afdcba0880528fa8ae6fa63a14de6b9018770.zip | |
ACPI / processor: Make it possible to get local x2apic id via _MAT
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>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 71e2065639a6..afe4201c5c7b 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -135,6 +135,8 @@ 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: |