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@@ -2305,13 +2305,12 @@ static int ram_save_target_page(RAMState *rs, PageSearchStatus *pss)
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}
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/*
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- * Do not use multifd for:
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- * 1. Compression as the first page in the new block should be posted out
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- * before sending the compressed page
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- * 2. In postcopy as one whole host page should be placed
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+ * Do not use multifd in postcopy as one whole host page should be
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+ * placed. Meanwhile postcopy requires atomic update of pages, so even
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+ * if host page size == guest page size the dest guest during run may
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+ * still see partially copied pages which is data corruption.
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*/
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- if (!save_page_use_compression(rs) && migrate_use_multifd()
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- && !migration_in_postcopy()) {
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+ if (migrate_use_multifd() && !migration_in_postcopy()) {
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return ram_save_multifd_page(rs, block, offset);
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}
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