Changeset 21587 in vbox for trunk/src/VBox/VMM

Timestamp:

Jul 14, 2009 3:50:00 PM (16 years ago)

Author:

vboxsync

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

50080

Message:

Make sure we turn off X86_CR4_VME if we are in emulated real mode (VT-x)

File:

• trunk/src/VBox/VMM/VMMR0/HWVMXR0.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR0/HWVMXR0.cpp

@@ -1511 +1511 @@
         }
 
+        /* Turn off VME if we're in emulated real mode. */
+        if (CPUMIsGuestInRealModeEx(pCtx))
+            val &= ~X86_CR4_VME;
+
         rc |= VMXWriteVMCS64(VMX_VMCS64_GUEST_CR4,            val);
         Log2(("Guest CR4 %08x\n", val));
@@ -1517 +1521 @@
          */
         val =   0
+              | X86_CR4_VME
               | X86_CR4_PAE
               | X86_CR4_PGE