[Qemu-devel] [RFC v1 16/22] memory: move tcg flush into a tcg memory listener

[Avi Kivity <avi@redhat.com>]

We plan to make the core listener listen to all address spaces; this
will cause many more flushes than necessary.  Prepare for that by
moving the flush into a tcg-specific listener.

Later we can avoid registering the listener if tcg is disabled.

Signed-off-by: Avi Kivity <avi@redhat.com>
---
 exec.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/exec.c b/exec.c
index e5f26fb..3c46298 100644
--- a/exec.c
+++ b/exec.c
@@ -3174,7 +3174,7 @@ static void core_begin(MemoryListener *listener)
     phys_section_watch = dummy_section(&io_mem_watch);
 }
 
-static void core_commit(MemoryListener *listener)
+static void tcg_commit(MemoryListener *listener)
 {
     CPUArchState *env;
 
@@ -3229,7 +3229,6 @@ static void io_region_del(MemoryListener *listener,
 static MemoryListener core_memory_listener = {
     MEMORY_LISTENER_DEFAULT_OPS,
     .begin = core_begin,
-    .commit = core_commit,
     .region_add = core_region_add,
     .region_nop = core_region_nop,
     .log_global_start = core_log_global_start,
@@ -3244,6 +3243,11 @@ static void io_region_del(MemoryListener *listener,
     .priority = 0,
 };
 
+static MemoryListener tcg_memory_listener = {
+    MEMORY_LISTENER_DEFAULT_OPS,
+    .commit = tcg_commit,
+};
+
 static void memory_map_init(void)
 {
     system_memory = g_malloc(sizeof(*system_memory));
@@ -3258,6 +3262,7 @@ static void memory_map_init(void)
 
     memory_listener_register(&core_memory_listener, system_memory);
     memory_listener_register(&io_memory_listener, system_io);
+    memory_listener_register(&tcg_memory_listener, system_memory);
 }
 
 MemoryRegion *get_system_memory(void)
-- 
1.7.12