1 files changed, 14 insertions, 0 deletions
diff --git a/src/acpi/dsdt_top.asl b/src/acpi/dsdt_top.asl
index 4300f0a65e..3e6bb1c530 100644
--- a/src/acpi/dsdt_top.asl
+++ b/src/acpi/dsdt_top.asl
@@ -16,3 +16,17 @@ Name (PICM, Zero)
 
 /* Power state (AC = 1) */
 Name (PWRS, One)
+
+/*
+ * The _PIC method is called by the OS to choose between interrupt
+ * routing via the i8259 interrupt controller or the APIC.
+ *
+ * _PIC is called with a parameter of 0 for i8259 configuration and
+ * with a parameter of 1 for Local Apic/IOAPIC configuration.
+ */
+
+Method (_PIC, 1)
+{
+	/* Remember the OS' IRQ routing choice. */
+	PICM = Arg0
+}