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-rw-r--r--hw/acpi/vmgenid.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/acpi/vmgenid.c b/hw/acpi/vmgenid.c
index c3ddcc8..a32b847 100644
--- a/hw/acpi/vmgenid.c
+++ b/hw/acpi/vmgenid.c
@@ -221,6 +221,14 @@ static void vmgenid_realize(DeviceState *dev, Error **errp)
return;
}
+ /* Given that this function is executing, there is at least one VMGENID
+ * device. Check if there are several.
+ */
+ if (!find_vmgenid_dev()) {
+ error_setg(errp, "at most one %s device is permitted", VMGENID_DEVICE);
+ return;
+ }
+
qemu_register_reset(vmgenid_handle_reset, vms);
}