[Qemu-devel] [PATCH qemu] spapr: Add /system-id

[Alexey Kardashevskiy <aik@ozlabs.ru>]

Section B.6.2.1 Root Node Properties of PAPR specification defines
a set of properties which shall be present in the device tree root,
one of these properties is "system-id" which "should be unique across
all systems and all manufacturers". Since UUID is meant to be unique,
it makes sense to use it as "system-id".

This adds "system-id" property to the device tree root when not empty.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---

This might be expected by AIX so here is the patch.
I am really not sure if it makes sense to initialize property when
UUID is all zeroes as the requirement is "unique" and zero-uuid is not.

---
 hw/ppc/spapr.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index de77528..e8b407d 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -374,6 +374,9 @@ static void *spapr_create_fdt_skel(hwaddr initrd_base,
                           qemu_uuid[14], qemu_uuid[15]);
 
     _FDT((fdt_property_string(fdt, "vm,uuid", buf)));
+    if (qemu_uuid_set) {
+        _FDT((fdt_property_string(fdt, "system-id", buf)));
+    }
     g_free(buf);
 
     if (qemu_get_vm_name()) {
-- 
2.5.0.rc3