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Re: [PATCH v2] hw/s390x: Attach the sclpconsole to /machine/sclp/s390-sc


From: Cédric Le Goater
Subject: Re: [PATCH v2] hw/s390x: Attach the sclpconsole to /machine/sclp/s390-sclp-event-facility
Date: Thu, 2 May 2024 09:57:23 +0200
User-agent: Mozilla Thunderbird

On 4/30/24 21:08, Thomas Huth wrote:
The sclpconsole currently does not have a proper parent in the QOM
tree, so it shows up under /machine/unattached - which is somewhat
ugly. We should rather attach it to /machine/sclp/s390-sclp-event-facility
where the other devices of type TYPE_SCLP_EVENT already reside.

Signed-off-by: Thomas Huth <thuth@redhat.com>

Reviewed-by: Cédric Le Goater <clg@redhat.com>

---
  hw/s390x/s390-virtio-ccw.c | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 5c83d1ea17..41be8bf857 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -242,11 +242,13 @@ static void s390_create_virtio_net(BusState *bus, const 
char *name)
static void s390_create_sclpconsole(const char *type, Chardev *chardev)
  {
+    BusState *ev_fac_bus = sclp_get_event_facility_bus();

This routine sclp_get_event_facility_bus() which scans all the machine
could be avoided and even removed. For that, SCLPDevice should be an
attribute of the machine. This means reshuffling definitions and
object instanciations a little in the code. Would you be OK with that ?

Other machine units/models could undergo the same kind of changes.

Thanks,

C.

      DeviceState *dev;
dev = qdev_new(type);
+    object_property_add_child(OBJECT(ev_fac_bus->parent), type, OBJECT(dev));
      qdev_prop_set_chr(dev, "chardev", chardev);
-    qdev_realize_and_unref(dev, sclp_get_event_facility_bus(), &error_fatal);
+    qdev_realize_and_unref(dev, ev_fac_bus, &error_fatal);
  }
static void ccw_init(MachineState *machine)




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