if the dup_page is a zero_page do not send it at all.
the memory at the destination reads as zero anyway.
Signed-off-by: Peter Lieven <p...@kamp.de>
---
arch_init.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch_init.c b/arch_init.c
index 04c82e4..abd54a7 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -447,9 +447,11 @@ static int ram_save_block(QEMUFile *f, bool last_stage)
bytes_sent = -1;
if (ram_bulk_stage && is_dup_page(p)) {
acct_info.dup_pages++;
- bytes_sent = save_block_hdr(f, block, offset, cont,
+ if (p[0]) {
+ bytes_sent = save_block_hdr(f, block, offset, cont,
RAM_SAVE_FLAG_COMPRESS);
- qemu_put_byte(f, *p);
+ qemu_put_byte(f, *p);
+ }
bytes_sent += 1;
} else if (!ram_bulk_stage && migrate_use_xbzrle()) {
current_addr = block->offset + offset;
--
1.7.9.5
