Changeset 45977 in vbox

Timestamp:

May 10, 2013 9:51:35 AM (12 years ago)

Author:

vboxsync

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

85629

Message:

VMM/HMVMXR0: Kernel GS Base is no longer manually saved/restore across the world switch.
If MSR-bitmaps are not supported, changing Kernel GS Base through WRMSR should reload the new value into
the auto-load/store area in the VMCS.

File:

• trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp

@@ -7807 +7807 @@
                 case MSR_K8_FS_BASE:        /* no break */
                 case MSR_K8_GS_BASE:        pVCpu->hm.s.fContextUseFlags |= HM_CHANGED_GUEST_SEGMENT_REGS;     break;
-                /* MSR_K8_KERNEL_GS_BASE: Nothing to do as it's not part of the VMCS. Manually loaded each time on VM-entry. */
+                case MSR_K8_KERNEL_GS_BASE: pVCpu->hm.s.fContextUseFlags |= HM_CHANGED_VMX_GUEST_AUTO_MSRS;    break;
             }
         }