Changeset 45944 in vbox for trunk/src/VBox/VMM

Timestamp:

May 8, 2013 11:44:06 AM (12 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

85590

Message:

VMM/HMVMXR0: Don't intercept CR3 reads with unrestricted guests.

File:

• trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp

@@ -2752 +2752 @@
             }
 
+            /* If we have unrestricted guest execution, we never have to intercept CR3 reads. */
+            if (pVM->hm.s.vmx.fUnrestrictedGuest)
+                pVCpu->hm.s.vmx.u32ProcCtls &= ~VMX_VMCS_CTRL_PROC_EXEC_CONTROLS_CR3_LOAD_EXIT;
+
             rc = VMXWriteVmcs32(VMX_VMCS32_CTRL_PROC_EXEC_CONTROLS, pVCpu->hm.s.vmx.u32ProcCtls);
             AssertRCReturn(rc, rc);
@@ -5116 +5120 @@
 
         PVM pVM = pVCpu->CTX_SUFF(pVM);
-        if (   pVM->hm.s.fNestedPaging
-            && CPUMIsGuestPagingEnabledEx(pMixedCtx))
+        if (   pVM->hm.s.vmx.fUnrestrictedGuest
+            || (   pVM->hm.s.fNestedPaging
+                && CPUMIsGuestPagingEnabledEx(pMixedCtx)))
         {
             RTGCUINTREG uVal = 0;