From b4a378a7c5de55333afa4d71b14c18c85b3cba6b Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Mon, 18 Nov 2019 00:20:41 +0100 Subject: [PATCH] xics: Link ICP_PROP_XICS property to ICPState::xics pointer MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The ICP object has both a pointer and an ICP_PROP_XICS property pointing to the XICS fabric. Confusing bugs could arise if these ever go out of sync. Change the property definition so that it explicitly sets the pointer. The property isn't optional : not being able to set the link is a bug and QEMU should rather abort than exit in this case. Signed-off-by: Greg Kurz Message-Id: <157403284152.409804.17114564311521923733.stgit@bahia.lan> Reviewed-by: Cédric Le Goater Signed-off-by: David Gibson --- hw/intc/xics.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/hw/intc/xics.c b/hw/intc/xics.c index f7a4548089..35dddb8867 100644 --- a/hw/intc/xics.c +++ b/hw/intc/xics.c @@ -310,15 +310,7 @@ static void icp_realize(DeviceState *dev, Error **errp) Object *obj; Error *err = NULL; - obj = object_property_get_link(OBJECT(dev), ICP_PROP_XICS, &err); - if (!obj) { - error_propagate_prepend(errp, err, - "required link '" ICP_PROP_XICS - "' not found: "); - return; - } - - icp->xics = XICS_FABRIC(obj); + assert(icp->xics); obj = object_property_get_link(OBJECT(dev), ICP_PROP_CPU, &err); if (!obj) { @@ -368,12 +360,19 @@ static void icp_unrealize(DeviceState *dev, Error **errp) vmstate_unregister(NULL, &vmstate_icp_server, icp); } +static Property icp_properties[] = { + DEFINE_PROP_LINK(ICP_PROP_XICS, ICPState, xics, TYPE_XICS_FABRIC, + XICSFabric *), + DEFINE_PROP_END_OF_LIST(), +}; + static void icp_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); dc->realize = icp_realize; dc->unrealize = icp_unrealize; + dc->props = icp_properties; /* * Reason: part of XICS interrupt controller, needs to be wired up * by icp_create(). @@ -397,9 +396,7 @@ Object *icp_create(Object *cpu, const char *type, XICSFabric *xi, Error **errp) obj = object_new(type); object_property_add_child(cpu, type, obj, &error_abort); object_unref(obj); - object_ref(OBJECT(xi)); - object_property_add_const_link(obj, ICP_PROP_XICS, OBJECT(xi), - &error_abort); + object_property_set_link(obj, OBJECT(xi), ICP_PROP_XICS, &error_abort); object_ref(cpu); object_property_add_const_link(obj, ICP_PROP_CPU, cpu, &error_abort); object_property_set_bool(obj, true, "realized", &local_err); @@ -417,7 +414,6 @@ void icp_destroy(ICPState *icp) Object *obj = OBJECT(icp); object_unref(object_property_get_link(obj, ICP_PROP_CPU, &error_abort)); - object_unref(object_property_get_link(obj, ICP_PROP_XICS, &error_abort)); object_unparent(obj); } -- 2.11.4.GIT