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authorWei Yang <richardw.yang@linux.intel.com>2019-10-26 07:20:00 +0800
committerJuan Quintela <quintela@redhat.com>2020-01-20 09:10:23 +0100
commitc6b3a2e0c4342d171b35970921bff709c007dd62 (patch)
treed49ba9c4c3f95a74221f388edbfa02dbc777c2b7
parenteab54aa78ffd9fb7895b20fc2761ee998479489b (diff)
migration/multifd: not use multifd during postcopy
We don't support multifd during postcopy, but user still could enable both multifd and postcopy. This leads to migration failure. Skip multifd during postcopy. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
-rw-r--r--migration/ram.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/migration/ram.c b/migration/ram.c
index a05448c0c9..d4f33a4f2f 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2587,10 +2587,13 @@ static int ram_save_target_page(RAMState *rs, PageSearchStatus *pss,
}
/*
- * do not use multifd for compression as the first page in the new
- * block should be posted out before sending the compressed page
+ * 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
*/
- if (!save_page_use_compression(rs) && migrate_use_multifd()) {
+ if (!save_page_use_compression(rs) && migrate_use_multifd()
+ && !migration_in_postcopy()) {
return ram_save_multifd_page(rs, block, offset);
}