diff mbox series

[PULL,17/29] migration/postcopy: set all_zero to true on the first target page

Message ID 20200120103340.25118-18-quintela@redhat.com
State New
Headers show
Series [PULL,01/29] multifd: Initialize local variable | expand

Commit Message

Juan Quintela Jan. 20, 2020, 10:33 a.m. UTC 
From: Wei Yang <richardw.yang@linux.intel.com>

For the first target page, all_zero is set to true for this round check.

After target_pages introduced, we could leverage this variable instead
of checking the address offset.

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration/ram.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/migration/ram.c b/migration/ram.c
index 8ebaea255e..460abfa2c3 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -4102,7 +4102,7 @@  static int ram_load_postcopy(QEMUFile *f)
             page_buffer = postcopy_host_page +
                           ((uintptr_t)host & (block->page_size - 1));
             /* If all TP are zero then we can optimise the place */
-            if (!((uintptr_t)host & (block->page_size - 1))) {
+            if (target_pages == 1) {
                 all_zero = true;
             } else {
                 /* not the 1st TP within the HP */