Changeset 186 in vbox

Timestamp:

Jan 19, 2007 5:04:07 PM (18 years ago)

Author:

vboxsync

Message:

Turn off sysenter/sysexit support due to IOPL problems. (#1782)

File:

trunk/src/VBox/VMM/CPUM.cpp

-              r172
+              r186
                                        | X86_CPUID_AMD_FEATURE_EDX_CX8
                                        //| X86_CPUID_AMD_FEATURE_EDX_APIC   - set by the APIC device if present.
+                                       | X86_CPUID_AMD_FEATURE_EDX_SEP
+                                       /** @note we don't report sysenter/sysexit support due to our inability to keep the IOPL part of eflags in sync while in ring 1 (see #1757) */
+                                       //| X86_CPUID_AMD_FEATURE_EDX_SEP
                                        //| X86_CPUID_AMD_FEATURE_EDX_MTRR   - not virtualized.
                                        | X86_CPUID_AMD_FEATURE_EDX_PGE

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