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-rw-r--r--include/hw/acpi/cpu_hotplug_defs.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/hw/acpi/cpu_hotplug_defs.h b/include/hw/acpi/cpu_hotplug_defs.h
index 2725b50aac..9f33663511 100644
--- a/include/hw/acpi/cpu_hotplug_defs.h
+++ b/include/hw/acpi/cpu_hotplug_defs.h
@@ -17,7 +17,15 @@
* between C and ASL code.
*/
#define ACPI_CPU_HOTPLUG_STATUS 4
+
+/* Limit for CPU arch IDs for CPU hotplug. All hotpluggable CPUs should
+ * have CPUClass.get_arch_id() < ACPI_CPU_HOTPLUG_ID_LIMIT.
+ */
+#define ACPI_CPU_HOTPLUG_ID_LIMIT 256
+
+/* 256 CPU IDs, 8 bits per entry: */
#define ACPI_GPE_PROC_LEN 32
+
#define ICH9_CPU_HOTPLUG_IO_BASE 0x0CD8
#define PIIX4_CPU_HOTPLUG_IO_BASE 0xaf00