[Qemu-devel] [PATCH v3 05/14] hw/machine: add helper to query the memory encryption state

["Singh, Brijesh" <brijesh.singh@amd.com>]

To enable a memory encryption inside a VM, user must pass the object
name used for the encryption in command line parameter as shown below.

# $(QEMU) \
  -machine memory-encryption=<object_name>

Add a helper machine_memory_encryption_enabled() which will return a bool
indicating whether the encryption object has been specified in the command
line parameter.

Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
 hw/core/machine.c   | 5 +++++
 include/hw/boards.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/hw/core/machine.c b/hw/core/machine.c
index c58a8e594e..f1e1b3661f 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -1031,6 +1031,11 @@ bool machine_mem_merge(MachineState *machine)
     return machine->mem_merge;
 }
 
+bool machine_memory_encryption_enabled(MachineState *machine)
+{
+    return machine->memory_encryption ? true : false;
+}
+
 static char *cpu_slot_to_string(const CPUArchId *cpu)
 {
     GString *s = g_string_new(NULL);
diff --git a/include/hw/boards.h b/include/hw/boards.h
index a71d1a53a5..c5446a39cf 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -76,6 +76,7 @@ void machine_set_cpu_numa_node(MachineState *machine,
                                Error **errp);
 
 void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type);
+bool machine_memory_encryption_enabled(MachineState *machine);
 
 
 /**
-- 
2.17.1