[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>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index f1aafd4c05f..d8030f3bd86 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -36,6 +36,13 @@ int arch_register_cpu(int num)
 	parent = &sysfs_nodes[cpu_to_node(num)];
 #endif /* CONFIG_NUMA */
 
+	/*
+	 * If CPEI cannot be re-targetted, and this is
+	 * CPEI target, then dont create the control file
+	 */
+	if (!can_cpei_retarget() && is_cpu_cpei_target(num))
+		sysfs_cpus[num].cpu.no_control = 1;
+
 	return register_cpu(&sysfs_cpus[num].cpu, num, parent);
 }