52 lines
1.7 KiB
Diff
52 lines
1.7 KiB
Diff
|
From 0f7e704a4faa661583ea6d82659f206e561f23d4 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Wei Yang <richardw.yang@linux.intel.com>
|
||
|
|
Date: Sat, 26 Oct 2019 07:19:59 +0800
|
||
|
|
Subject: [PATCH 3/8] migration/multifd: clean pages after filling packet
|
||
|
|
|
||
|
|
This is a preparation for the next patch:
|
||
|
|
|
||
|
|
not use multifd during postcopy.
|
||
|
|
|
||
|
|
Without enabling postcopy, everything looks good. While after enabling
|
||
|
|
postcopy, migration may fail even not use multifd during postcopy. The
|
||
|
|
reason is the pages is not properly cleared and *old* target page will
|
||
|
|
continue to be transferred.
|
||
|
|
|
||
|
|
After clean pages, migration succeeds.
|
||
|
|
|
||
|
|
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>
|
||
|
|
---
|
||
|
|
migration/ram.c | 5 +++--
|
||
|
|
1 file changed, 3 insertions(+), 2 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/migration/ram.c b/migration/ram.c
|
||
|
|
index 840e354..c2eb1ed 100644
|
||
|
|
--- a/migration/ram.c
|
||
|
|
+++ b/migration/ram.c
|
||
|
|
@@ -947,10 +947,10 @@ static int multifd_send_pages(RAMState *rs)
|
||
|
|
}
|
||
|
|
qemu_mutex_unlock(&p->mutex);
|
||
|
|
}
|
||
|
|
- p->pages->used = 0;
|
||
|
|
+ assert(!p->pages->used);
|
||
|
|
+ assert(!p->pages->block);
|
||
|
|
|
||
|
|
p->packet_num = multifd_send_state->packet_num++;
|
||
|
|
- p->pages->block = NULL;
|
||
|
|
multifd_send_state->pages = p->pages;
|
||
|
|
p->pages = pages;
|
||
|
|
transferred = ((uint64_t) pages->used) * TARGET_PAGE_SIZE + p->packet_len;
|
||
|
|
@@ -1137,6 +1137,7 @@ static void *multifd_send_thread(void *opaque)
|
||
|
|
p->num_packets++;
|
||
|
|
p->num_pages += used;
|
||
|
|
p->pages->used = 0;
|
||
|
|
+ p->pages->block = NULL;
|
||
|
|
qemu_mutex_unlock(&p->mutex);
|
||
|
|
|
||
|
|
trace_multifd_send(p->id, packet_num, used, flags,
|
||
|
|
--
|
||
|
|
1.8.3.1
|
||
|
|
|