Changeset 71966 in vbox for trunk/src/VBox

Timestamp:

Apr 23, 2018 4:40:51 AM (7 years ago)

Author:

vboxsync

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

122224

Message:

VMM/HMSVMAll: Some comments on the nuances of the VMCB caching with hardware-assisted SVM execution of nested-guests.

File:

• trunk/src/VBox/VMM/VMMAll/HMSVMAll.cpp (modified) (1 diff)

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

@@ -146 +146 @@
         /*
          * Restore fields as our own code might look at the VMCB controls as part
-         * of the #VMEXIT handling. Otherwise, we don't need to restore the current
-         * fields because none of them are written by a physical CPU on #VMEXIT.
+         * of the #VMEXIT handling in IEM. Otherwise, strictly speaking we don't need to
+         * restore these fields because currently none of them are written back to memory
+         * by a physical CPU on #VMEXIT.
          */
         pVmcbNstGstCtrl->u16InterceptRdCRx                 = pVmcbNstGstCache->u16InterceptRdCRx;