Changeset 91355 in vbox

Timestamp:

Sep 24, 2021 7:42:22 AM (3 years ago)

Author:

vboxsync

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

147025

Message:

VMM: Nested VMX: bugref:10092 Disable VPID for now, also correct confusing comment (bit 37 refers to bit 5 of the upper dword).

File:

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

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

@@ -1452 +1452 @@
          * when INVVPID instruction is supported just to be more compatible with guest
          * hypervisors that may make assumptions by only looking at this MSR even though they
-         * are technically supposed to refer to bit 37 of MSR_IA32_VMX_PROC_CTLS2 first.
+         * are technically supposed to refer to VMX_PROC_CTLS2_VPID first.
          *
          * See Intel spec. 25.1.2 "Instructions That Cause VM Exits Unconditionally".
@@ -1677 +1677 @@
     EmuFeat.fVmxRdtscp                = 1;
     EmuFeat.fVmxVirtX2ApicMode        = 0;
-    EmuFeat.fVmxVpid                  = EmuFeat.fVmxEpt;
+    EmuFeat.fVmxVpid                  = 0;
     EmuFeat.fVmxWbinvdExit            = 1;
     EmuFeat.fVmxUnrestrictedGuest     = pVM->cpum.s.fNestedVmxUnrestrictedGuest;