diff options
| author | zhanghailiang | 2018-09-03 06:38:55 +0200 |
|---|---|---|
| committer | Jason Wang | 2018-10-19 05:15:03 +0200 |
| commit | d1955d22197615eb65ec7b7ddc1242e5103f5b50 (patch) | |
| tree | 7a9f2092f60154544d38506f603483c386a48b19 /migration | |
| parent | savevm: split the process of different stages for loadvm/savevm (diff) | |
| download | qemu-d1955d22197615eb65ec7b7ddc1242e5103f5b50.tar.gz qemu-d1955d22197615eb65ec7b7ddc1242e5103f5b50.tar.xz qemu-d1955d22197615eb65ec7b7ddc1242e5103f5b50.zip | |
COLO: flush host dirty ram from cache
Don't need to flush all VM's ram from cache, only
flush the dirty pages since last checkpoint
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Zhang Chen <zhangckid@gmail.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'migration')
| -rw-r--r-- | migration/ram.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/migration/ram.c b/migration/ram.c index 477853d777..7e7deec4d8 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3714,6 +3714,7 @@ int colo_init_ram_cache(void) } ram_state = g_new0(RAMState, 1); ram_state->migration_dirty_pages = 0; + memory_global_dirty_log_start(); return 0; @@ -3735,6 +3736,7 @@ void colo_release_ram_cache(void) { RAMBlock *block; + memory_global_dirty_log_stop(); RAMBLOCK_FOREACH_MIGRATABLE(block) { g_free(block->bmap); block->bmap = NULL; @@ -3985,6 +3987,13 @@ static void colo_flush_ram_cache(void) void *src_host; unsigned long offset = 0; + memory_global_dirty_log_sync(); + rcu_read_lock(); + RAMBLOCK_FOREACH_MIGRATABLE(block) { + migration_bitmap_sync_range(ram_state, block, 0, block->used_length); + } + rcu_read_unlock(); + trace_colo_flush_ram_cache_begin(ram_state->migration_dirty_pages); rcu_read_lock(); block = QLIST_FIRST_RCU(&ram_list.blocks); |