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-rw-r--r--migration/ram.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/migration/ram.c b/migration/ram.c
index 1d42414ecc..1338e47665 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2305,13 +2305,12 @@ static int ram_save_target_page(RAMState *rs, PageSearchStatus *pss)
}
/*
- * Do not use multifd for:
- * 1. Compression as the first page in the new block should be posted out
- * before sending the compressed page
- * 2. In postcopy as one whole host page should be placed
+ * Do not use multifd in postcopy as one whole host page should be
+ * placed. Meanwhile postcopy requires atomic update of pages, so even
+ * if host page size == guest page size the dest guest during run may
+ * still see partially copied pages which is data corruption.
*/
- if (!save_page_use_compression(rs) && migrate_use_multifd()
- && !migration_in_postcopy()) {
+ if (migrate_use_multifd() && !migration_in_postcopy()) {
return ram_save_multifd_page(rs, block, offset);
}