aboutsummaryrefslogtreecommitdiff
path: root/arch_init.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch_init.c')
-rw-r--r--arch_init.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/arch_init.c b/arch_init.c
index db1759117e..129c710c3c 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -349,6 +349,8 @@ static QemuMutex *comp_done_lock;
static QemuCond *comp_done_cond;
/* The empty QEMUFileOps will be used by file in CompressParam */
static const QEMUFileOps empty_ops = { };
+
+static bool compression_switch;
static bool quit_comp_thread;
static bool quit_decomp_thread;
static DecompressParam *decomp_param;
@@ -435,6 +437,7 @@ void migrate_compress_threads_create(void)
return;
}
quit_comp_thread = false;
+ compression_switch = true;
thread_count = migrate_compress_threads();
compress_threads = g_new0(QemuThread, thread_count);
comp_param = g_new0(CompressParam, thread_count);
@@ -1061,9 +1064,16 @@ static int ram_find_and_save_block(QEMUFile *f, bool last_stage,
block = QLIST_FIRST_RCU(&ram_list.blocks);
complete_round = true;
ram_bulk_stage = false;
+ if (migrate_use_xbzrle()) {
+ /* If xbzrle is on, stop using the data compression at this
+ * point. In theory, xbzrle can do better than compression.
+ */
+ flush_compressed_data(f);
+ compression_switch = false;
+ }
}
} else {
- if (migrate_use_compression()) {
+ if (compression_switch && migrate_use_compression()) {
pages = ram_save_compressed_page(f, block, offset, last_stage,
bytes_transferred);
} else {