[ACPI] Evaluate CPEI Processor Override flag

ACPI 3.0 added a Correctable Platform Error Interrupt (CPEI)
Processor Overide flag to MADT.Platform_Interrupt_Source.
Record the processor that was provided as hint from ACPI.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

2 files changed, 13 insertions, 1 deletions

diff --git a/include/asm-ia64/acpi.h b/include/asm-ia64/acpi.h
index 6a26a977f253..4c06d455139c 100644
--- a/include/asm-ia64/acpi.h
+++ b/include/asm-ia64/acpi.h
@@ -98,6 +98,15 @@ const char *acpi_get_sysname (void);
 int acpi_request_vector (u32 int_type);
 int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
 
+/*
+ * Record the cpei override flag and current logical cpu. This is
+ * useful for CPU removal.
+ */
+extern unsigned int can_cpei_retarget(void);
+extern unsigned int is_cpu_cpei_target(unsigned int cpu);
+extern void set_cpei_target_cpu(unsigned int cpu);
+extern unsigned int get_cpei_target_cpu(void);
+
 #ifdef CONFIG_ACPI_NUMA
 /* Proximity bitmap length; _PXM is at most 255 (8 bit)*/
 #define MAX_PXM_DOMAINS (256)
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index b123cc08773d..70b3c52b75d7 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -206,7 +206,10 @@ struct acpi_table_plat_int_src {
         u8                      eid;
         u8                      iosapic_vector;
         u32                     global_irq;
-        u32                     reserved;
+        struct {
+                u32                     cpei_override_flag:1;
+                u32                     reserved:31;
+        }                       plint_flags;
 } __attribute__ ((packed));
 
 enum acpi_interrupt_id {