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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>
This commit is contained in:
zhanghailiang 2015-04-02 19:26:31 +00:00 committed by Paolo Bonzini
parent 0a7cf217d8
commit 4cc856faba
1 changed files with 1 additions and 1 deletions
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kvm-all.c
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@ -715,7 +715,7 @@ static void kvm_set_phys_mem(MemoryRegionSection *section, bool add)
old = *mem; 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); kvm_physical_sync_dirty_bitmap(section);
} }