From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:58133) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UGXDm-0001ON-Gi for qemu-devel@nongnu.org; Fri, 15 Mar 2013 12:11:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UGXDj-0006HU-SL for qemu-devel@nongnu.org; Fri, 15 Mar 2013 12:11:06 -0400 Received: from [2a02:248:0:30:223:aeff:fefe:7f1c] (port=48338 helo=dns.kamp-intra.net) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UGXDj-0006H0-M9 for qemu-devel@nongnu.org; Fri, 15 Mar 2013 12:11:03 -0400 From: Peter Lieven Date: Fri, 15 Mar 2013 16:50:17 +0100 Message-Id: <1363362619-3190-9-git-send-email-pl@kamp.de> In-Reply-To: <1363362619-3190-1-git-send-email-pl@kamp.de> References: <1363362619-3190-1-git-send-email-pl@kamp.de> Subject: [Qemu-devel] [PATCHv2 8/9] migration: do not search dirty pages in bulk stage List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Peter Lieven avoid searching for dirty pages just increment the page offset. all pages are dirty anyway. Signed-off-by: Peter Lieven --- arch_init.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/arch_init.c b/arch_init.c index a3dc20d..ca281ad 100644 --- a/arch_init.c +++ b/arch_init.c @@ -321,8 +321,14 @@ ram_addr_t migration_bitmap_find_and_reset_dirty(MemoryRegion *mr, unsigned long nr = base + (start >> TARGET_PAGE_BITS); unsigned long size = base + (int128_get64(mr->size) >> TARGET_PAGE_BITS); - unsigned long next = find_next_bit(migration_bitmap, size, nr); - + unsigned long next; + + if (ram_bulk_stage) { + next = nr + 1; + } else { + next = find_next_bit(migration_bitmap, size, nr); + } + if (next < size) { clear_bit(next, migration_bitmap); migration_dirty_pages--; @@ -523,7 +529,7 @@ static void reset_ram_globals(void) { last_seen_block = NULL; last_sent_block = NULL; - last_offset = 0; + last_offset = -1; last_version = ram_list.version; ram_bulk_stage = true; } -- 1.7.9.5