From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56510) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fwgga-0000kZ-OD for qemu-devel@nongnu.org; Mon, 03 Sep 2018 00:42:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fwgga-0005v9-1Z for qemu-devel@nongnu.org; Mon, 03 Sep 2018 00:42:00 -0400 Received: from mail-pf1-x444.google.com ([2607:f8b0:4864:20::444]:39344) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fwggZ-0005uF-R5 for qemu-devel@nongnu.org; Mon, 03 Sep 2018 00:41:59 -0400 Received: by mail-pf1-x444.google.com with SMTP id j8-v6so8108538pff.6 for ; Sun, 02 Sep 2018 21:41:59 -0700 (PDT) From: Zhang Chen Date: Mon, 3 Sep 2018 12:38:55 +0800 Message-Id: <20180903043900.28592-15-zhangckid@gmail.com> In-Reply-To: <20180903043900.28592-1-zhangckid@gmail.com> References: <20180903043900.28592-1-zhangckid@gmail.com> Subject: [Qemu-devel] [PATCH V12 14/19] COLO: flush host dirty ram from cache List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, Paolo Bonzini , Juan Quintela , "Dr . David Alan Gilbert" , Jason Wang , Eric Blake , Markus Armbruster Cc: Zhang Chen , zhanghailiang , Li Zhijian , Zhang Chen From: zhanghailiang Don't need to flush all VM's ram from cache, only flush the dirty pages since last checkpoint Signed-off-by: Li Zhijian Signed-off-by: Zhang Chen Signed-off-by: Zhang Chen Signed-off-by: zhanghailiang Reviewed-by: Dr. David Alan Gilbert --- 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