Changeset 93337 in vbox

Timestamp:

Jan 19, 2022 5:46:03 AM (3 years ago)

Author:

vboxsync

Message:

VMM: Nested VMX: bugref:10092 Comment clarifying CR0-fixed-0 and CR0-fixed-1 bits reporting.

File:

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

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

@@ -1480 +1480 @@
     }
 
-    /* CR0 Fixed-0. */
+    /* CR0 Fixed-0 (we report this fixed value regardless of whether UX is supported as it does on real hardware). */
     pGuestVmxMsrs->u64Cr0Fixed0 = VMX_V_CR0_FIXED0;
 
@@ -1490 +1490 @@
          * CPU features and/or micro-architecture/generation. Why? Ask Intel.
          */
-        uint64_t const uHostMsr = fIsNstGstHwExecAllowed ? pHostVmxMsrs->u64Cr0Fixed1 : 0xffffffff;
+        uint64_t const uHostMsr = fIsNstGstHwExecAllowed ? pHostVmxMsrs->u64Cr0Fixed1 : VMX_V_CR0_FIXED1;
         pGuestVmxMsrs->u64Cr0Fixed1 = uHostMsr | pGuestVmxMsrs->u64Cr0Fixed0;   /* Make sure the CR0 MB1 bits are not clear. */
     }