Changeset 48614 in vbox for trunk

Timestamp:

Sep 20, 2013 4:25:25 PM (12 years ago)

Author:

vboxsync

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

89189

Message:

VMM/HMR0Mixed.mac: Comment for Win8.1 RTM and IDTR limit abuse.

File:

• trunk/src/VBox/VMM/VMMR0/HMR0Mixed.mac (modified) (1 diff)

trunk/src/VBox/VMM/VMMR0/HMR0Mixed.mac

@@ -24 +24 @@
  ; with RT_ARCH_AMD64 once and RT_ARCH_X86 once.
  %define VMX_SKIP_GDTR
+  ; Darwin (Mavericks) uses IDTR limit to store the CPUID so we need to restore it always. See @bugref{6875}.
  %ifndef RT_OS_DARWIN
-  ; Darwin (Mavericks) uses IDTR limit to store the CPUID so we need to restore it always. See @bugref{6875}.
+   ; Windows 8.1 RTM also seems to be using the IDTR for something. See @bugref{6956}.
+   ;; @todo figure out what exactly it does and try and restrict it more.
   %ifndef RT_OS_WINDOWS
-   ; Windows 8.1 RTM experiment.
    %define VMX_SKIP_IDTR
   %endif