Changeset 20064 in vbox

Timestamp:

May 27, 2009 11:13:16 AM (16 years ago)

Author:

vboxsync

Message:

SyncPage: deal with missing PDE; can be changed behind our back by another VCPU

File:

• trunk/src/VBox/VMM/VMMAll/PGMAllBth.h (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/PGMAllBth.h

@@ -1683 +1683 @@
 # endif
     SHWPDE          PdeDst   = *pPdeDst;
-    AssertMsg(PdeDst.n.u1Present, ("%p=%llx\n", pPdeDst, (uint64_t)PdeDst.u));
+    if (!PdeDst.n.u1Present)
+    {
+        AssertMsg(pVM->cCPUs > 1, ("%Unexpected missing PDE p=%llx\n", pPdeDst, (uint64_t)PdeDst.u));
+        return VINF_SUCCESS;    /* force the instruction to be executed again. */
+    }
+
     PPGMPOOLPAGE    pShwPage = pgmPoolGetPage(pPool, PdeDst.u & SHW_PDE_PG_MASK);