Changeset 37330 in vbox for trunk/src/VBox/VMM

Timestamp:

Jun 6, 2011 4:15:52 PM (14 years ago)

Author:

vboxsync

Message:

PDMBlkCache: Fix loading a saved state which has fewer saved entries than the current VM. This should not result in an error.

File:

• trunk/src/VBox/VMM/VMMR3/PDMBlkCache.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR3/PDMBlkCache.cpp

@@ -880 +880 @@
     SSMR3GetU32(pSSM, &cRefs);
 
-    if (cRefs == pBlkCacheGlobal->cRefs)
+    /*
+     * Fewer users in the saved state than in the current VM are allowed
+     * because that means that there are only new ones which don't have any saved state
+     * which can get lost.
+     * More saved entries that current ones are not allowed because this could result in
+     * lost data.
+     */
+    if (cRefs <= pBlkCacheGlobal->cRefs)
     {
         char *pszId = NULL;