Changeset 85964 in vbox for trunk/src/VBox/VMM/include

Timestamp:

Aug 31, 2020 11:42:54 PM (5 years ago)

Author:

vboxsync

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

140159

Message:

VMM/APIC: Added a CFGM hack to work around a macOS x2APIC bug.

File:

• trunk/src/VBox/VMM/include/APICInternal.h (modified) (1 diff)

trunk/src/VBox/VMM/include/APICInternal.h

@@ -940 +940 @@
     /** Whether Hyper-V x2APIC compatibility mode is enabled. */
     bool                        fHyperVCompatMode;
-    /** Alignment padding. */
-    bool                        afAlignment[1];
+    /** Enable horrible macOS workaround where the ID register has the value
+     * shifted up 24 bits to be compatible with buggy code in
+     * i386_init.c/vstart().  Only applied if we're in typical macOS 64-bit
+     * kernel load area and macOS kernel selector value (8), as we must not ever
+     * apply this to the EFI code. */
+    bool                        fMacOSWorkaround;
     /** The max supported APIC mode from CFGM.  */
     PDMAPICMODE                 enmMaxMode;