xive: Link "xive" property to XiveSource::xive pointer

The source object has both a pointer and a "xive" property pointing to the
notifier object. Confusing bugs could arise if these ever go out of sync.

Change the property definition so that it explicitely 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 <groug@kaod.org>
Message-Id: <157383333227.165747.12901571295951957951.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

diff --git a/hw/intc/pnv_xive.c b/hw/intc/pnv_xive.c
index 348f2fdd263db2147f056cf1dfa914a7d4ded8f7..9e23dc705dc39b570c84233fee60bd55fe44d520 100644 (file)
--- a/hw/intc/pnv_xive.c
+++ b/hw/intc/pnv_xive.c
@@ -1695,8 +1695,8 @@ static void pnv_xive_realize(DeviceState *dev, Error **errp)
      */
     object_property_set_int(OBJECT(xsrc), PNV_XIVE_NR_IRQS, "nr-irqs",
                             &error_fatal);
-    object_property_add_const_link(OBJECT(xsrc), "xive", OBJECT(xive),
-                                   &error_fatal);
+    object_property_set_link(OBJECT(xsrc), OBJECT(xive), "xive",
+                             &error_abort);
     object_property_set_bool(OBJECT(xsrc), true, "realized", &local_err);
     if (local_err) {
         error_propagate(errp, local_err);

diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c
index 9cb8d38a3bab5d663c21ba554807be338c6d2bd3..10890aeeeb5b96c2245b30ae6fb92c56b03ddd32 100644 (file)
--- a/hw/intc/spapr_xive.c
+++ b/hw/intc/spapr_xive.c
@@ -276,8 +276,8 @@ static void spapr_xive_realize(DeviceState *dev, Error **errp)
      */
     object_property_set_int(OBJECT(xsrc), xive->nr_irqs, "nr-irqs",
                             &error_fatal);
-    object_property_add_const_link(OBJECT(xsrc), "xive", OBJECT(xive),
-                                   &error_fatal);
+    object_property_set_link(OBJECT(xsrc), OBJECT(xive), "xive",
+                             &error_abort);
     object_property_set_bool(OBJECT(xsrc), true, "realized", &local_err);
     if (local_err) {
         error_propagate(errp, local_err);

diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index 9376e84aff756c4f0f4e527388758b04e2a636b3..2eac15efa675564cb9bf4089ae9cfa42beaf298d 100644 (file)
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -1060,17 +1060,8 @@ static void xive_source_reset(void *dev)
 static void xive_source_realize(DeviceState *dev, Error **errp)
 {
     XiveSource *xsrc = XIVE_SOURCE(dev);
-    Object *obj;
-    Error *local_err = NULL;
-
-    obj = object_property_get_link(OBJECT(dev), "xive", &local_err);
-    if (!obj) {
-        error_propagate(errp, local_err);
-        error_prepend(errp, "required link 'xive' not found: ");
-        return;
-    }
 
-    xsrc->xive = XIVE_NOTIFIER(obj);
+    assert(xsrc->xive);
 
     if (!xsrc->nr_irqs) {
         error_setg(errp, "Number of interrupt needs to be greater than 0");
@@ -1116,6 +1107,8 @@ static Property xive_source_properties[] = {
     DEFINE_PROP_UINT64("flags", XiveSource, esb_flags, 0),
     DEFINE_PROP_UINT32("nr-irqs", XiveSource, nr_irqs, 0),
     DEFINE_PROP_UINT32("shift", XiveSource, esb_shift, XIVE_ESB_64K_2PAGE),
+    DEFINE_PROP_LINK("xive", XiveSource, xive, TYPE_XIVE_NOTIFIER,
+                     XiveNotifier *),
     DEFINE_PROP_END_OF_LIST(),
 };
 

diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
index 68d0dfacfe2bb63da1aa31c78252bb91743b924f..a360515a86f88faff8fdb59af80d3644c2446541 100644 (file)
--- a/hw/ppc/pnv_psi.c
+++ b/hw/ppc/pnv_psi.c
@@ -851,8 +851,7 @@ static void pnv_psi_power9_realize(DeviceState *dev, Error **errp)
                             &error_fatal);
     object_property_set_int(OBJECT(xsrc), PSIHB9_NUM_IRQS, "nr-irqs",
                             &error_fatal);
-    object_property_add_const_link(OBJECT(xsrc), "xive", OBJECT(psi),
-                                   &error_fatal);
+    object_property_set_link(OBJECT(xsrc), OBJECT(psi), "xive", &error_abort);
     object_property_set_bool(OBJECT(xsrc), true, "realized", &local_err);
     if (local_err) {
         error_propagate(errp, local_err);