Changeset 15438 in vbox for trunk/src

Timestamp:

Dec 13, 2008 12:39:15 PM (16 years ago)

Author:

vboxsync

Message:

PGM: Ugly workaround for the 'VMMDev Heap' which broke the 2.0 -> 2.1 saved state compatibility. (#3281)

File:

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

trunk/src/VBox/VMM/PGM.cpp

@@ -2471 +2471 @@
             AssertMsgFailed(("u32Sep=%#x (last)\n", u32Sep));
             return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
+        }
+
+        /* This is a horribly ugly hack for an 2.0 -> 2.1 incompatibility
+           in the VMMDev PCI regions. VMMDev Heap was added in 2.1 and we
+           simply skip it here if it's not in the saved state. */
+        if (    (   GCPhys != pRam->GCPhys
+                 || GCPhysLast != pRam->GCPhysLast
+                 || cb != pRam->cb
+                 || fHaveBits != !!pRam->pvR3)
+            &&  !strcmp(pRam->pszDesc, "VMMDev Heap")
+            &&  pRam->pNextR3)
+        {
+            pRam = pRam->pNextR3;
+            i++;
         }