Changeset 70380 in vbox for trunk/src

Timestamp:

Dec 29, 2017 9:58:52 AM (7 years ago)

Author:

vboxsync

Message:

VMM/HMSVMR0: Comment update.

File:

• trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR0/HMSVMR0.cpp

@@ -3533 +3533 @@
         /*
          * If IEM emulated VMRUN and injected an event it would not clear the EVENTINJ::Valid bit
-         * as a physical CPU clears it as part of the #VMEXIT. However, now we are continuing
-         * nested-guest execution using hardware-assisted SVM, so we need to clear this field
-         * otherwise we will inject the event twice, see @bugref{7243#78}.
+         * as a physical CPU clears it in the VMCB as part of the #VMEXIT (if the AMD spec. is to
+         * believed, real behavior might differ). Regardless, IEM does it only on #VMEXIT for now
+         * and since we are continuing nested-guest execution using hardware-assisted SVM, we need
+         * to clear this field otherwise we will inject the event twice, see @bugref{7243#78}.
          */
         if (CPUMIsGuestInSvmNestedHwVirtMode(pCtx))