Changeset 47156 in vbox for trunk/src/VBox

Timestamp:

Jul 15, 2013 11:49:02 AM (11 years ago)

Author:

vboxsync

Message:

VMM/HMSVMR0: Compile-time define to trap task switches unconditionally.

File:

• trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp (modified) (3 diffs)

trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp

@@ -35 +35 @@
 # define HMSVM_ALWAYS_TRAP_ALL_XCPTS
 # define HMSVM_ALWAYS_TRAP_PF
+# define HMSVM_ALWAYS_TRAP_TASK_SWITCH
 #endif
 
@@ -714 +715 @@
         }
 
+#ifdef HMSVM_ALWAYS_TRAP_TASK_SWITCH
+        pVmcb->ctrl.u32InterceptCtrl1 |= SVM_CTRL1_INTERCEPT_TASK_SWITCH;
+#endif
+
         /*
          * The following MSRs are saved/restored automatically during the world-switch.
@@ -4253 +4258 @@
     HMSVM_VALIDATE_EXIT_HANDLER_PARAMS();
 
+#ifndef HMSVM_ALWAYS_TRAP_TASK_SWITCH
+    Assert(!pVCpu->CTX_SUFF(pVM)->hm.s.fNestedPaging);
+#endif
+
     /* Check if this task-switch occurred while delivery an event through the guest IDT. */
     PSVMVMCB pVmcb = (PSVMVMCB)pVCpu->hm.s.svm.pvVmcb;