Changeset 61023 in vbox for trunk/src/VBox/VMM/VMMR3/EM.cpp

Timestamp:

May 18, 2016 7:20:26 AM (9 years ago)

Author:

vboxsync

Message:

emR3RemExecute: Check if we can use VT-x mode every so often when REM is disabled or we'll stay executing in turtle mode for ever.

File:

• trunk/src/VBox/VMM/VMMR3/EM.cpp (modified) (2 diffs)

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

@@ -1092 +1092 @@
 #ifdef VBOX_WITH_REM
     bool    fInREMState = false;
+#else
+    uint32_t cLoops     = 0;
 #endif
     int     rc          = VINF_SUCCESS;
@@ -1222 +1224 @@
             }
         }
+
+#ifndef VBOX_WITH_REM
+        /*
+         * Have to check if we can get back to fast execution mode every so often.
+         */
+        if (!(++cLoops & 7))
+        {
+            EMSTATE enmCheck = emR3Reschedule(pVM, pVCpu, pCtx);
+            if (   enmCheck != EMSTATE_REM
+                && enmCheck != EMSTATE_IEM_THEN_REM)
+                return VINF_EM_RESCHEDULE;
+        }
+#endif
 
     } /* The Inner Loop, recompiled execution mode version. */