Index: /trunk/src/VBox/VMM/VMMR3/CPUMR3CpuId.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR3/CPUMR3CpuId.cpp	(revision 54796)
+++ /trunk/src/VBox/VMM/VMMR3/CPUMR3CpuId.cpp	(revision 54797)
@@ -720,8 +720,16 @@
      * Validate the new leaf a little.
      */
-    AssertReturn(!(pNewLeaf->fFlags & ~CPUMCPUIDLEAF_F_VALID_MASK), VERR_INVALID_FLAGS);
-    AssertReturn(pNewLeaf->fSubLeafMask != 0 || pNewLeaf->uSubLeaf == 0, VERR_INVALID_PARAMETER);
-    AssertReturn(RT_IS_POWER_OF_TWO(pNewLeaf->fSubLeafMask + 1), VERR_INVALID_PARAMETER);
-    AssertReturn((pNewLeaf->fSubLeafMask & pNewLeaf->uSubLeaf) == pNewLeaf->uSubLeaf, VERR_INVALID_PARAMETER);
+    AssertLogRelMsgReturn(!(pNewLeaf->fFlags & ~CPUMCPUIDLEAF_F_VALID_MASK),
+                          ("%#x/%#x: %#x", pNewLeaf->uLeaf, pNewLeaf->uSubLeaf, pNewLeaf->fFlags),
+                          VERR_INVALID_FLAGS);
+    AssertLogRelMsgReturn(pNewLeaf->fSubLeafMask != 0 || pNewLeaf->uSubLeaf == 0,
+                          ("%#x/%#x: %#x", pNewLeaf->uLeaf, pNewLeaf->uSubLeaf, pNewLeaf->fSubLeafMask),
+                          VERR_INVALID_PARAMETER);
+    AssertLogRelMsgReturn(RT_IS_POWER_OF_TWO(pNewLeaf->fSubLeafMask + 1),
+                          ("%#x/%#x: %#x", pNewLeaf->uLeaf, pNewLeaf->uSubLeaf, pNewLeaf->fSubLeafMask),
+                          VERR_INVALID_PARAMETER);
+    AssertLogRelMsgReturn((pNewLeaf->fSubLeafMask & pNewLeaf->uSubLeaf) == pNewLeaf->uSubLeaf,
+                          ("%#x/%#x: %#x", pNewLeaf->uLeaf, pNewLeaf->uSubLeaf, pNewLeaf->fSubLeafMask),
+                          VERR_INVALID_PARAMETER);
 
     /*