commit 4cc856fabae1447d53890e707c70f257a7691174
author zhanghailiang <zhang.zhanghailiang@huawei.com> Thu Apr 02 19:26:31 2015 +0000
committer Paolo Bonzini <pbonzini@redhat.com> Thu Apr 02 15:58:37 2015 +0200
tree c82675888017050ea43b23104926b48d5b2bcaad
parent 0a7cf217d81161e36af2344e911d56d4f9fef9c5

kvm-all: Sync dirty-bitmap from kvm before kvm destroy the corresponding dirty_bitmap

Sometimes, we destroy the dirty_bitmap in kvm_memory_slot before any sync action
occur, this bit in dirty_bitmap will be missed, and which will lead the corresponding
dirty pages to be missed in migration.

This usually happens when do migration during VM's Start-up or Reboot.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
[Use s->migration_log instead of exec.c's in_migration. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

kvm-all.c

diff --git a/kvm-all.c b/kvm-all.c
index 335438a..dd44f8c 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -715,7 +715,7 @@
 
         old = *mem;
 
-        if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
+        if ((mem->flags & KVM_MEM_LOG_DIRTY_PAGES) || s->migration_log) {
             kvm_physical_sync_dirty_bitmap(section);
         }