aboutsummaryrefslogtreecommitdiff
path: root/xen-all.c
diff options
context:
space:
mode:
authorAvi Kivity <avi@redhat.com>2012-02-08 21:36:02 +0200
committerAvi Kivity <avi@redhat.com>2012-02-29 13:44:42 +0200
commit50c1e1491e1981ecba14a477897681d8d0602500 (patch)
treeb978d61c3b39d9ed2f811df18f13fad93097d372 /xen-all.c
parent4855d41a61301a04e54c074f1139040e4cb4dd00 (diff)
memory: support stateless memory listeners
Current memory listeners are incremental; that is, they are expected to maintain their own state, and receive callbacks for changes to that state. This patch adds support for stateless listeners; these work by receiving a ->begin() callback (which tells them that new state is coming), a sequence of ->region_add() and ->region_nop() callbacks, and then a ->commit() callback which signifies the end of the new state. They should ignore ->region_del() callbacks. Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'xen-all.c')
-rw-r--r--xen-all.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/xen-all.c b/xen-all.c
index a58a397ca4..6a11342665 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -394,6 +394,14 @@ static void xen_set_memory(struct MemoryListener *listener,
}
}
+static void xen_begin(MemoryListener *listener)
+{
+}
+
+static void xen_commit(MemoryListener *listener)
+{
+}
+
static void xen_region_add(MemoryListener *listener,
MemoryRegionSection *section)
{
@@ -406,6 +414,11 @@ static void xen_region_del(MemoryListener *listener,
xen_set_memory(listener, section, false);
}
+static void xen_region_nop(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+}
+
static void xen_sync_dirty_bitmap(XenIOState *state,
target_phys_addr_t start_addr,
ram_addr_t size)
@@ -500,8 +513,11 @@ static void xen_eventfd_del(MemoryListener *listener,
}
static MemoryListener xen_memory_listener = {
+ .begin = xen_begin,
+ .commit = xen_commit,
.region_add = xen_region_add,
.region_del = xen_region_del,
+ .region_nop = xen_region_nop,
.log_start = xen_log_start,
.log_stop = xen_log_stop,
.log_sync = xen_log_sync,