1 files changed, 2 insertions, 0 deletions
diff --git a/include/hw/acpi/cpu.h b/include/hw/acpi/cpu.h
index e6e1a9ef59..df87b15997 100644
--- a/include/hw/acpi/cpu.h
+++ b/include/hw/acpi/cpu.h
@@ -19,6 +19,8 @@
 #include "hw/boards.h"
 #include "hw/hotplug.h"
 
+#define ACPI_CPU_HOTPLUG_REG_LEN 12
+
 typedef struct AcpiCpuStatus {
     CPUState *cpu;
     uint64_t arch_id;