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-rw-r--r--include/acpi/actbl2.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index a8c3829b8000..71ca090fd61b 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -978,6 +978,7 @@ struct acpi_madt_multiproc_wakeup_mailbox {
/* MADT Local APIC flags */
#define ACPI_MADT_ENABLED (1) /* 00: Processor is usable if set */
+#define ACPI_MADT_ONLINE_CAPABLE (2) /* 01: System HW supports enabling processor at runtime */
/* MADT MPS INTI flags (inti_flags) */