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authorPaolo Bonzini <pbonzini@redhat.com>2013-05-06 10:46:11 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2013-07-04 17:42:45 +0200
commitdfde4e6e1a868f60033ece0590b1f75e6c57fa16 (patch)
treea84c1cddd96c6dc60fd7a5d35949b4fcaf9a32ed /hw/xen
parent3ce10901ca8da9142dcdcde198fda1a4c290934c (diff)
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memory: add ref/unref calls
Add ref/unref calls at the following places: - places where memory regions are stashed by a listener and used outside the BQL (including in Xen or KVM). - memory_region_find callsites - creation of aliases and containers (only the aliased/contained region gets a reference to avoid loops) - around calls to del_subregion/add_subregion, where the region could disappear after the first call Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/xen')
-rw-r--r--hw/xen/xen_pt.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index 15b4896..c06a018 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -606,6 +606,7 @@ static void xen_pt_region_add(MemoryListener *l, MemoryRegionSection *sec)
XenPCIPassthroughState *s = container_of(l, XenPCIPassthroughState,
memory_listener);
+ memory_region_ref(sec->mr);
xen_pt_region_update(s, sec, true);
}
@@ -615,6 +616,7 @@ static void xen_pt_region_del(MemoryListener *l, MemoryRegionSection *sec)
memory_listener);
xen_pt_region_update(s, sec, false);
+ memory_region_unref(sec->mr);
}
static void xen_pt_io_region_add(MemoryListener *l, MemoryRegionSection *sec)
@@ -622,6 +624,7 @@ static void xen_pt_io_region_add(MemoryListener *l, MemoryRegionSection *sec)
XenPCIPassthroughState *s = container_of(l, XenPCIPassthroughState,
io_listener);
+ memory_region_ref(sec->mr);
xen_pt_region_update(s, sec, true);
}
@@ -631,6 +634,7 @@ static void xen_pt_io_region_del(MemoryListener *l, MemoryRegionSection *sec)
io_listener);
xen_pt_region_update(s, sec, false);
+ memory_region_unref(sec->mr);
}
static const MemoryListener xen_pt_memory_listener = {