Changeset 19779 in vbox for trunk/src/VBox/VMM

Timestamp:

May 18, 2009 11:53:30 AM (16 years ago)

Author:

vboxsync

Message:

Only need stale TLB detection in ring 0.

File:

• trunk/src/VBox/VMM/VMMAll/PGMAllBth.h (modified) (4 diffs)

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

@@ -2180 +2180 @@
                     return VINF_PGM_HANDLED_DIRTY_BIT_FAULT;
                 }
+# ifdef IN_RING0
                 else
                 /* Check for stale TLB entry; only applies to the SMP guest case. */
@@ -2203 +2204 @@
                     }
                 }
+# endif /* IN_RING0 */
             }
         }
@@ -2318 +2320 @@
                             return VINF_PGM_HANDLED_DIRTY_BIT_FAULT;
                         }
+# ifdef IN_RING0
                         else
-                        if (    pPteDst->n.u1Write == 1 
+                        /* Check for stale TLB entry; only applies to the SMP guest case. */
+                        if (    pVM->cCPUs > 1
+                            &&  pPteDst->n.u1Write == 1 
                             &&  pPteDst->n.u1Accessed == 1)
                         {
@@ -2329 +2334 @@
                             return VINF_PGM_HANDLED_DIRTY_BIT_FAULT;
                         }
+# endif
                     }
                 }