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-rw-r--r--hw/acpi/memory_hotplug_acpi_table.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/acpi/memory_hotplug_acpi_table.c b/hw/acpi/memory_hotplug_acpi_table.c
index a21ef6fc1c..c2bd9283bd 100644
--- a/hw/acpi/memory_hotplug_acpi_table.c
+++ b/hw/acpi/memory_hotplug_acpi_table.c
@@ -38,6 +38,8 @@ void build_memory_hotplug_aml(Aml *ctx, uint32_t nr_mem,
/* present, functioning, decoding, not shown in UI */
aml_append(method, aml_return(aml_int(0xB)));
aml_append(mem_ctrl_dev, method);
+
+ aml_append(mem_ctrl_dev, aml_mutex(stringify(MEMORY_SLOT_LOCK), 0));
}
aml_append(pci_scope, mem_ctrl_dev);
aml_append(ctx, pci_scope);