diff options
| author | Avi Kivity <avi@redhat.com> | 2012-02-08 21:05:17 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-02-29 13:44:42 +0200 |
| commit | 7376e5827a898d8ddf10f929047cc84bf65d9f52 (patch) | |
| tree | af5ade26946ff09d19d950d66af6083c6f2f00d2 /memory.c | |
| parent | 8df8a8436fa22442a58b366fbb7e471b4a8d88ce (diff) | |
memory: allow MemoryListeners to observe a specific address space
Ignore any regions not belonging to a specified address space.
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'memory.c')
| -rw-r--r-- | memory.c | 45 |
1 files changed, 39 insertions, 6 deletions
@@ -84,7 +84,14 @@ static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2) enum ListenerDirection { Forward, Reverse }; -#define MEMORY_LISTENER_CALL(_callback, _direction, _args...) \ +static bool memory_listener_match(MemoryListener *listener, + MemoryRegionSection *section) +{ + return !listener->address_space_filter + || listener->address_space_filter == section->address_space; +} + +#define MEMORY_LISTENER_CALL_GLOBAL(_callback, _direction, _args...) \ do { \ MemoryListener *_listener; \ \ @@ -105,15 +112,40 @@ enum ListenerDirection { Forward, Reverse }; } \ } while (0) +#define MEMORY_LISTENER_CALL(_callback, _direction, _section, _args...) \ + do { \ + MemoryListener *_listener; \ + \ + switch (_direction) { \ + case Forward: \ + QTAILQ_FOREACH(_listener, &memory_listeners, link) { \ + if (memory_listener_match(_listener, _section)) { \ + _listener->_callback(_listener, _section, ##_args); \ + } \ + } \ + break; \ + case Reverse: \ + QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, \ + memory_listeners, link) { \ + if (memory_listener_match(_listener, _section)) { \ + _listener->_callback(_listener, _section, ##_args); \ + } \ + } \ + break; \ + default: \ + abort(); \ + } \ + } while (0) + #define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback) \ - MEMORY_LISTENER_CALL(callback, dir, &(MemoryRegionSection) { \ + MEMORY_LISTENER_CALL(callback, dir, (&(MemoryRegionSection) { \ .mr = (fr)->mr, \ .address_space = (as)->root, \ .offset_within_region = (fr)->offset_in_region, \ .size = int128_get64((fr)->addr.size), \ .offset_within_address_space = int128_get64((fr)->addr.start), \ .readonly = (fr)->readonly, \ - }) + })) struct CoalescedMemoryRange { AddrRange addr; @@ -1382,13 +1414,13 @@ void memory_global_sync_dirty_bitmap(MemoryRegion *address_space) void memory_global_dirty_log_start(void) { global_dirty_log = true; - MEMORY_LISTENER_CALL(log_global_start, Forward); + MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward); } void memory_global_dirty_log_stop(void) { global_dirty_log = false; - MEMORY_LISTENER_CALL(log_global_stop, Reverse); + MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse); } static void listener_add_address_space(MemoryListener *listener, @@ -1412,10 +1444,11 @@ static void listener_add_address_space(MemoryListener *listener, } } -void memory_listener_register(MemoryListener *listener) +void memory_listener_register(MemoryListener *listener, MemoryRegion *filter) { MemoryListener *other = NULL; + listener->address_space_filter = filter; if (QTAILQ_EMPTY(&memory_listeners) || listener->priority >= QTAILQ_LAST(&memory_listeners, memory_listeners)->priority) { |