kvm: Rework dirty bitmap synchronization
Extend kvm_physical_sync_dirty_bitmap() so that is can sync across
multiple slots. Useful for updating the whole dirty log during
migration. Moreover, properly pass down errors the whole call chain.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/exec.c b/exec.c
index c5c9280..544fb43 100644
--- a/exec.c
+++ b/exec.c
@@ -1931,10 +1931,14 @@
return in_migration;
}
-void cpu_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, target_phys_addr_t end_addr)
+int cpu_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
+ target_phys_addr_t end_addr)
{
+ int ret = 0;
+
if (kvm_enabled())
- kvm_physical_sync_dirty_bitmap(start_addr, end_addr);
+ ret = kvm_physical_sync_dirty_bitmap(start_addr, end_addr);
+ return ret;
}
static inline void tlb_update_dirty(CPUTLBEntry *tlb_entry)