[Qemu-devel] [PULL 07/21] migration/ram.c: reset complete_round when we gets a queued page

[Juan Quintela <quintela@redhat.com>]

From: Wei Yang <richardw.yang@linux.intel.com>

In case we gets a queued page, the order of block is interrupted. We may
not rely on the complete_round flag to say we have already searched the
whole blocks on the list.

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20190605010828.6969-1-richardw.yang@linux.intel.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration/ram.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/migration/ram.c b/migration/ram.c
index 96c84f770a..89eec7ee9d 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2286,6 +2286,12 @@ static bool get_queued_page(RAMState *rs, PageSearchStatus *pss)
          */
         pss->block = block;
         pss->page = offset >> TARGET_PAGE_BITS;
+
+        /*
+         * This unqueued page would break the "one round" check, even is
+         * really rare.
+         */
+        pss->complete_round = false;
     }
 
     return !!block;
-- 
2.21.0