diff mbox

[v2,41/41] migration/postcopy: add movebg mode

Message ID dde6ca47a58ac1b7ccf68975bff210a912ef4540.1338802193.git.yamahata@valinux.co.jp
State New
Headers show

Commit Message

Isaku Yamahata June 4, 2012, 9:57 a.m. UTC 
When movebg mode is enabled, the point to send background page is set
to the next page to on-demand page.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
---
 migration-postcopy.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/migration-postcopy.c b/migration-postcopy.c
index 6165657..3df88d7 100644
--- a/migration-postcopy.c
+++ b/migration-postcopy.c
@@ -442,6 +442,14 @@  static int postcopy_outgoing_handle_req(PostcopyOutgoingState *s,
                                                 true, j);
             }
         }
+        if (s->ms->params.movebg) {
+            ram_addr_t last_offset =
+                (req->pgoffs[req->nr - 1] + s->ms->params.prefault_forward) <<
+                TARGET_PAGE_BITS;
+            last_offset = MIN(last_offset,
+                              s->last_block_read->length - TARGET_PAGE_SIZE);
+            ram_save_set_last_block(s->last_block_read, last_offset);
+        }
         /* backward prefault */
         for (j = 1; j <= s->ms->params.prefault_backward; j++) {
             for (i = 0; i < req->nr; i++) {