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[Qemu-devel] [PATCH 15/15] COLO: flush host dirty ram from cache
From: |
zhanghailiang |
Subject: |
[Qemu-devel] [PATCH 15/15] COLO: flush host dirty ram from cache |
Date: |
Wed, 22 Feb 2017 11:42:16 +0800 |
Don't need to flush all VM's ram from cache, only
flush the dirty pages since last checkpoint
Cc: Juan Quintela <address@hidden>
Signed-off-by: Li Zhijian <address@hidden>
Signed-off-by: Zhang Chen <address@hidden>
Signed-off-by: zhanghailiang <address@hidden>
---
migration/ram.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/migration/ram.c b/migration/ram.c
index 6227b94..e9ba740 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2702,6 +2702,7 @@ int colo_init_ram_cache(void)
migration_bitmap_rcu = g_new0(struct BitmapRcu, 1);
migration_bitmap_rcu->bmap = bitmap_new(ram_cache_pages);
migration_dirty_pages = 0;
+ memory_global_dirty_log_start();
return 0;
@@ -2750,6 +2751,15 @@ void colo_flush_ram_cache(void)
void *src_host;
ram_addr_t offset = 0;
+ memory_global_dirty_log_sync();
+ qemu_mutex_lock(&migration_bitmap_mutex);
+ rcu_read_lock();
+ QLIST_FOREACH_RCU(block, &ram_list.blocks, next) {
+ migration_bitmap_sync_range(block->offset, block->used_length);
+ }
+ rcu_read_unlock();
+ qemu_mutex_unlock(&migration_bitmap_mutex);
+
trace_colo_flush_ram_cache_begin(migration_dirty_pages);
rcu_read_lock();
block = QLIST_FIRST_RCU(&ram_list.blocks);
--
1.8.3.1
- [Qemu-devel] [PATCH 02/15] colo-compare: implement the process of checkpoint, (continued)
- [Qemu-devel] [PATCH 05/15] COLO: Handle shutdown command for VM in COLO state, zhanghailiang, 2017/02/21
- [Qemu-devel] [PATCH 06/15] COLO: Add block replication into colo process, zhanghailiang, 2017/02/21
- [Qemu-devel] [PATCH 14/15] COLO: Split qemu_savevm_state_begin out of checkpoint process, zhanghailiang, 2017/02/21
- [Qemu-devel] [PATCH 12/15] savevm: split the process of different stages for loadvm/savevm, zhanghailiang, 2017/02/21
- [Qemu-devel] [PATCH 15/15] COLO: flush host dirty ram from cache,
zhanghailiang <=
- [Qemu-devel] [PATCH 13/15] COLO: Separate the process of saving/loading ram and device state, zhanghailiang, 2017/02/21
- [Qemu-devel] [PATCH 11/15] savevm: split save/find loadvm_handlers entry into two helper functions, zhanghailiang, 2017/02/21
- [Qemu-devel] [PATCH 03/15] colo-compare: use notifier to notify packets comparing result, zhanghailiang, 2017/02/21
- [Qemu-devel] [PATCH 10/15] qmp event: Add COLO_EXIT event to notify users while exited from COLO, zhanghailiang, 2017/02/21