[Qemu-devel] [PATCH 37/46] Add assertion to check migration_dirty_pages doesn't go -ve; have seen it happen once but not sure why

Fri, 04 Jul 2014 10:46:25 -0700 

From: "Dr. David Alan Gilbert" <[email protected]>

Signed-off-by: Dr. David Alan Gilbert <[email protected]>
---
 arch_init.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch_init.c b/arch_init.c
index c006d21..58eccc1 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -439,6 +439,7 @@ ram_addr_t 
migration_bitmap_find_and_reset_dirty(MemoryRegion *mr,
 
     if (next < size) {
         clear_bit(next, migration_bitmap);
+        assert(migration_dirty_pages > 0);
         migration_dirty_pages--;
     }
     *bitoffset = next;
-- 
1.9.3

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