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authorHanjun Guo <hanjun.guo@linaro.org>2014-07-29 11:27:50 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-07-30 02:03:31 +0200
commit515afdcba0880528fa8ae6fa63a14de6b9018770 (patch)
treef31bf10eb0f12da1979a3384eb7c2d29c093207b /drivers/acpi
parent64aa90f26c06e1cb2aacfb98a7d0eccfbd6c1a91 (diff)
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.c2
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: