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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 /memory.c
parent4855d41a61301a04e54c074f1139040e4cb4dd00 (diff)
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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 'memory.c')
-rw-r--r--memory.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/memory.c b/memory.c
index 35e1483..6565e2e 100644
--- a/memory.c
+++ b/memory.c
@@ -676,6 +676,7 @@ static void address_space_update_topology_pass(AddressSpace *as,
/* In both (logging may have changed) */
if (adding) {
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop);
} else if (frnew->dirty_log_mask && !frold->dirty_log_mask) {
@@ -722,6 +723,8 @@ static void memory_region_update_topology(MemoryRegion *mr)
return;
}
+ MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
+
if (address_space_memory.root) {
address_space_update_topology(&address_space_memory);
}
@@ -729,6 +732,8 @@ static void memory_region_update_topology(MemoryRegion *mr)
address_space_update_topology(&address_space_io);
}
+ MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
+
memory_region_update_pending = false;
}