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[Qemu-devel] [PATCH V12 14/19] COLO: flush host dirty ram from cache
From: |
Zhang Chen |
Subject: |
[Qemu-devel] [PATCH V12 14/19] COLO: flush host dirty ram from cache |
Date: |
Mon, 3 Sep 2018 12:38:55 +0800 |
From: zhanghailiang <address@hidden>
Don't need to flush all VM's ram from cache, only
flush the dirty pages since last checkpoint
Signed-off-by: Li Zhijian <address@hidden>
Signed-off-by: Zhang Chen <address@hidden>
Signed-off-by: Zhang Chen <address@hidden>
Signed-off-by: zhanghailiang <address@hidden>
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
---
migration/ram.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/migration/ram.c b/migration/ram.c
index a478d85740..739458be5b 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3665,6 +3665,7 @@ 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;
@@ -3686,6 +3687,7 @@ void colo_release_ram_cache(void)
{
RAMBlock *block;
+ memory_global_dirty_log_stop();
RAMBLOCK_FOREACH_MIGRATABLE(block) {
g_free(block->bmap);
block->bmap = NULL;
@@ -3936,6 +3938,13 @@ 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);
--
2.17.GIT
- [Qemu-devel] [PATCH V12 05/19] COLO: Add block replication into colo process, (continued)
- [Qemu-devel] [PATCH V12 05/19] COLO: Add block replication into colo process, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 06/19] COLO: Remove colo_state migration struct, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 07/19] COLO: Load dirty pages into SVM's RAM cache firstly, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 08/19] ram/COLO: Record the dirty pages that SVM received, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 09/19] COLO: Flush memory data from ram cache, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 10/19] qmp event: Add COLO_EXIT event to notify users while exited COLO, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 11/19] qapi/migration.json: Rename COLO unknown mode to none mode., Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 12/19] qapi: Add new command to query colo status, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 13/19] savevm: split the process of different stages for loadvm/savevm, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 14/19] COLO: flush host dirty ram from cache,
Zhang Chen <=
- [Qemu-devel] [PATCH V12 15/19] filter: Add handle_event method for NetFilterClass, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 16/19] filter-rewriter: handle checkpoint and failover event, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 17/19] COLO: notify net filters about checkpoint/failover event, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 18/19] COLO: quick failover process by kick COLO thread, Zhang Chen, 2018/09/03
- [Qemu-devel] [PATCH V12 19/19] docs: Add COLO status diagram to COLO-FT.txt, Zhang Chen, 2018/09/03
- Re: [Qemu-devel] [PATCH V12 00/19] COLO: integrate colo frame with block replication and COLO proxy, Zhang Chen, 2018/09/10