VMMAll

Timestamp:

Jan 19, 2024 8:49:53 AM (13 months ago)

Author:

vboxsync

Message:

VMM/IEM: Nested VMX: bugref:10318 Disabled descriptor reserved bit checking in INVEPT instruction emulation.

File:

trunk/src/VBox/VMM/VMMAll/IEMAllCImplVmxInstr.cpp

-              r102034
+              r102965
          * hardware, it's assumed INVEPT behaves the same as INVVPID in this regard. It's
          * better to be strict in our emulation until proven otherwise.
+         *
+         * UPDATE: Hyper-V enabled Windows 10 Pro guests do NOT clear the reserved bits in
+         * the descriptor. Hence, I've disabled this check for now, see @bugref{10318#c122}.
          */
+#if 0
         if (uDesc.s.Hi)
+        {
 …
             return iemRegAddToRipAndFinishingClearingRF(pVCpu, cbInstr);
+        }
+#endif
         /*

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