Changeset 66103 in vbox

Timestamp:

Mar 15, 2017 9:45:01 AM (8 years ago)

Author:

vboxsync

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

113983

Message:

Main: bugref:5454: don't enable the 64-bit prefetch resource window in raw mode

File:

• trunk/src/VBox/Main/src-client/ConsoleImpl2.cpp (modified) (1 diff)

trunk/src/VBox/Main/src-client/ConsoleImpl2.cpp

@@ -3223 +3223 @@
                 InsertConfigInteger(pCfg,  "McfgLength", cbMcfgLength);
                 /* 64-bit prefetch window root resource:
-                 * Only for ICH9 and if PAE or Long Mode is enabled */
-                if (fEnablePAE || fIsGuest64Bit)
-                    InsertConfigInteger(pCfg,  "PciPref64Enabled", 1);
+                 * Only for ICH9 and if PAE or Long Mode is enabled.
+                 * And only with hardware virtualization (@bugref:5454). */
+                if (   (fEnablePAE || fIsGuest64Bit)
+                    && fSupportsHwVirtEx /* HwVirt needs to be supported by the host
+                                            otherwise VMM falls back to raw mode */
+                    && fHMEnabled        /* HwVirt needs to be enabled in VM config */)
+                        InsertConfigInteger(pCfg,  "PciPref64Enabled", 1);
             }
             InsertConfigInteger(pCfg,  "HostBusPciAddress", uHbcPCIAddress);