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[Qemu-devel] [PULL 08/19] migration/ram.c: reset complete_round when we


From: Juan Quintela
Subject: [Qemu-devel] [PULL 08/19] migration/ram.c: reset complete_round when we gets a queued page
Date: Fri, 12 Jul 2019 16:31:56 +0200

From: Wei Yang <address@hidden>

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 <address@hidden>
Reviewed-by: Juan Quintela <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Juan Quintela <address@hidden>
---
 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




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